add architecture skeleton

GymLogAI.AI/DependencyInjection.cs

@@ -0,0 +1,33 @@
+using GymLogAI.Application.Interfaces;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace GymLogAI.AI;
+
+public static class DependencyInjection
+{
+    public static IServiceCollection AddAiServices(this IServiceCollection services, IConfiguration configuration)
+    {
+        services
+            .AddOptions<OpenRouterOptions>()
+            .Bind(configuration.GetSection(OpenRouterOptions.SectionName));
+
+        services.AddHttpClient<OpenRouterChatClient>((serviceProvider, client) =>
+        {
+            var options = serviceProvider.GetRequiredService<Microsoft.Extensions.Options.IOptions<OpenRouterOptions>>().Value;
+            client.BaseAddress = new Uri(options.BaseUrl);
+        });
+
+        services.AddHttpClient<OpenRouterEmbeddingClient>((serviceProvider, client) =>
+        {
+            var options = serviceProvider.GetRequiredService<Microsoft.Extensions.Options.IOptions<OpenRouterOptions>>().Value;
+            client.BaseAddress = new Uri(options.BaseUrl);
+        });
+
+        services.AddScoped<IWorkoutParser, WorkoutParserAIService>();
+        services.AddScoped<IWorkoutRecommendationGenerator, WorkoutRecommendationAIService>();
+        services.AddScoped<IEmbeddingService, StubEmbeddingService>();
+
+        return services;
+    }
+}

GymLogAI.AI/GymLogAI.AI.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="10.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GymLogAI.Application\GymLogAI.Application.csproj" />
+    <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
+  </ItemGroup>
+
+</Project>

GymLogAI.AI/OpenRouterChatClient.cs

@@ -0,0 +1,36 @@
+using System.Net.Http.Json;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace GymLogAI.AI;
+
+public sealed class OpenRouterChatClient(
+    HttpClient httpClient,
+    IOptions<OpenRouterOptions> options,
+    ILogger<OpenRouterChatClient> logger)
+{
+    private readonly OpenRouterOptions _options = options.Value;
+
+    public async Task<string?> CompleteAsync(string prompt, CancellationToken cancellationToken)
+    {
+        if (string.IsNullOrWhiteSpace(_options.ApiKey))
+        {
+            logger.LogInformation("OpenRouter API key is not configured. Returning stubbed chat completion.");
+            return null;
+        }
+
+        using var request = new HttpRequestMessage(HttpMethod.Post, "chat/completions")
+        {
+            Content = JsonContent.Create(new
+            {
+                model = _options.ChatModel,
+                messages = new[] { new { role = "user", content = prompt } }
+            })
+        };
+
+        request.Headers.Authorization = new("Bearer", _options.ApiKey);
+        var response = await httpClient.SendAsync(request, cancellationToken);
+        response.EnsureSuccessStatusCode();
+        return await response.Content.ReadAsStringAsync(cancellationToken);
+    }
+}

GymLogAI.AI/OpenRouterEmbeddingClient.cs

@@ -0,0 +1,37 @@
+using System.Net.Http.Json;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace GymLogAI.AI;
+
+public sealed class OpenRouterEmbeddingClient(
+    HttpClient httpClient,
+    IOptions<OpenRouterOptions> options,
+    ILogger<OpenRouterEmbeddingClient> logger)
+{
+    private readonly OpenRouterOptions _options = options.Value;
+
+    public async Task<float[]?> GenerateAsync(string input, CancellationToken cancellationToken)
+    {
+        if (string.IsNullOrWhiteSpace(_options.ApiKey))
+        {
+            logger.LogInformation("OpenRouter API key is not configured. Returning stubbed embedding.");
+            return null;
+        }
+
+        using var request = new HttpRequestMessage(HttpMethod.Post, "embeddings")
+        {
+            Content = JsonContent.Create(new
+            {
+                model = _options.EmbeddingModel,
+                input
+            })
+        };
+
+        request.Headers.Authorization = new("Bearer", _options.ApiKey);
+        var response = await httpClient.SendAsync(request, cancellationToken);
+        response.EnsureSuccessStatusCode();
+
+        return null;
+    }
+}

GymLogAI.AI/OpenRouterOptions.cs

@@ -0,0 +1,11 @@
+namespace GymLogAI.AI;
+
+public sealed class OpenRouterOptions
+{
+    public const string SectionName = "OpenRouter";
+
+    public string BaseUrl { get; init; } = "https://openrouter.ai/api/v1/";
+    public string? ApiKey { get; init; }
+    public string ChatModel { get; init; } = "openai/gpt-4.1-mini";
+    public string EmbeddingModel { get; init; } = "text-embedding-3-small";
+}

GymLogAI.AI/StubEmbeddingService.cs

@@ -0,0 +1,23 @@
+using GymLogAI.Application.Interfaces;
+
+namespace GymLogAI.AI;
+
+public sealed class StubEmbeddingService(OpenRouterEmbeddingClient embeddingClient) : IEmbeddingService
+{
+    public async Task<float[]> GenerateEmbeddingAsync(string input, CancellationToken cancellationToken)
+    {
+        var remoteEmbedding = await embeddingClient.GenerateAsync(input, cancellationToken);
+        if (remoteEmbedding is not null)
+        {
+            return remoteEmbedding;
+        }
+
+        return
+        [
+            input.Length,
+            input.Count(char.IsLetter),
+            input.Count(char.IsDigit),
+            input.Count(char.IsWhiteSpace)
+        ];
+    }
+}

GymLogAI.AI/WorkoutParserAIService.cs

@@ -0,0 +1,36 @@
+using GymLogAI.Application.DTOs;
+using GymLogAI.Application.Interfaces;
+
+namespace GymLogAI.AI;
+
+public sealed class WorkoutParserAIService(OpenRouterChatClient chatClient) : IWorkoutParser
+{
+    public async Task<ParsedWorkoutDto?> ParseAsync(string text, CancellationToken cancellationToken)
+    {
+        await chatClient.CompleteAsync($"Parse workout:\n{text}", cancellationToken);
+
+        var lines = text
+            .Split(['\r', '\n'], StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
+            .Where(x => !string.IsNullOrWhiteSpace(x))
+            .ToArray();
+
+        if (lines.Length == 0)
+        {
+            return null;
+        }
+
+        var exercises = lines
+            .Select((line, index) => new ParsedExerciseDto(
+                line,
+                index + 1,
+                null,
+                [new ParsedExerciseSetDto(1, 10, null, null, null, "Stub set")]))
+            .ToArray();
+
+        return new ParsedWorkoutDto(
+            DateTime.UtcNow,
+            "Imported workout",
+            "Stubbed parser result",
+            exercises);
+    }
+}

GymLogAI.AI/WorkoutRecommendationAIService.cs

@@ -0,0 +1,34 @@
+using GymLogAI.Application.DTOs;
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.AI;
+
+public sealed class WorkoutRecommendationAIService(OpenRouterChatClient chatClient) : IWorkoutRecommendationGenerator
+{
+    public async Task<WorkoutRecommendationDto> GenerateAsync(
+        WorkoutRecommendationContext context,
+        IReadOnlyCollection<Workout> workoutHistory,
+        CancellationToken cancellationToken)
+    {
+        await chatClient.CompleteAsync(
+            $"Recommend workout for goal {context.GoalType} with {workoutHistory.Count} historical workouts.",
+            cancellationToken);
+
+        var lastWorkout = workoutHistory.FirstOrDefault();
+        var fallbackExercises = lastWorkout?.WorkoutExercises
+            .OrderBy(x => x.Order)
+            .Select(x => x.Exercise?.Name ?? "Bodyweight movement")
+            .Distinct()
+            .Take(4)
+            .ToArray();
+
+        return new WorkoutRecommendationDto(
+            "Today's training recommendation",
+            $"Goal: {context.GoalType}. History count: {workoutHistory.Count}.",
+            fallbackExercises is { Length: > 0 }
+                ? fallbackExercises
+                : ["Squat", "Bench Press", "Row", "Plank"],
+            "Keep the session moderate and leave 1-2 reps in reserve.");
+    }
+}

GymLogAI.API/Contracts/ImportTelegramMessageRequest.cs

@@ -0,0 +1,14 @@
+namespace GymLogAI.API.Contracts;
+
+public sealed record ImportTelegramMessageRequest(
+    Guid UserId,
+    long TelegramUserId,
+    long TelegramChatId,
+    int TelegramMessageId,
+    string Text,
+    DateTime SentAtUtc,
+    string? Username,
+    string? FirstName,
+    string? LastName);
+
+public sealed record ImportTelegramMessageResponse(Guid MessageId);

GymLogAI.API/Contracts/RecommendWorkoutRequest.cs

@@ -0,0 +1,8 @@
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.API.Contracts;
+
+public sealed record RecommendWorkoutRequest(
+    Guid UserId,
+    GoalType GoalType,
+    string? AdditionalContext);

GymLogAI.API/Contracts/WorkoutHistoryResponses.cs

@@ -0,0 +1,23 @@
+namespace GymLogAI.API.Contracts;
+
+public sealed record WorkoutHistoryItemResponse(
+    Guid Id,
+    DateTime PerformedAtUtc,
+    string? Title,
+    string? Notes,
+    IReadOnlyCollection<WorkoutHistoryExerciseResponse> Exercises);
+
+public sealed record WorkoutHistoryExerciseResponse(
+    Guid ExerciseId,
+    string Name,
+    int Order,
+    string? Notes,
+    IReadOnlyCollection<WorkoutHistorySetResponse> Sets);
+
+public sealed record WorkoutHistorySetResponse(
+    int Order,
+    int? Repetitions,
+    decimal? WeightKg,
+    int? DurationSeconds,
+    decimal? DistanceMeters,
+    string? Notes);

GymLogAI.API/Dockerfile

@@ -8,6 +8,10 @@ FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
 ARG BUILD_CONFIGURATION=Release
 WORKDIR /src
 COPY ["GymLogAI.API/GymLogAI.API.csproj", "GymLogAI.API/"]
+COPY ["GymLogAI.Application/GymLogAI.Application.csproj", "GymLogAI.Application/"]
+COPY ["GymLogAI.AI/GymLogAI.AI.csproj", "GymLogAI.AI/"]
+COPY ["GymLogAI.Core/GymLogAI.Core.csproj", "GymLogAI.Core/"]
+COPY ["GymLogAI.Persistence/GymLogAI.Persistence.csproj", "GymLogAI.Persistence/"]
 RUN dotnet restore "GymLogAI.API/GymLogAI.API.csproj"
 COPY . .
 WORKDIR "/src/GymLogAI.API"

GymLogAI.API/GymLogAI.API.csproj

@@ -9,6 +9,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.6" />
+        <PackageReference Include="Swashbuckle.AspNetCore" Version="10.1.7" />
     </ItemGroup>
 
     <ItemGroup>
@@ -18,7 +19,10 @@
     </ItemGroup>
 
     <ItemGroup>
-      <ProjectReference Include="..\GymLogAI.TgBot\GymLogAI.TgBot.csproj" />
+      <ProjectReference Include="..\GymLogAI.Application\GymLogAI.Application.csproj" />
+      <ProjectReference Include="..\GymLogAI.AI\GymLogAI.AI.csproj" />
+      <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
+      <ProjectReference Include="..\GymLogAI.Persistence\GymLogAI.Persistence.csproj" />
     </ItemGroup>
 
 </Project>

GymLogAI.API/Program.cs

@@ -1,51 +1,120 @@
-using GymLogAI.TgBot;
+using GymLogAI.AI;
+using GymLogAI.API.Contracts;
+using GymLogAI.Application.Handlers;
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Persistence;
+using Microsoft.EntityFrameworkCore;
 
 namespace GymLogAI.API;
 
 public class Program
 {
-    public static void Main(string[] args)
+    public static async Task Main(string[] args)
     {
         var builder = WebApplication.CreateBuilder(args);
 
-        // Add services to the container.
+        builder.Services.AddProblemDetails();
         builder.Services.AddAuthorization();
-        builder.Services.AddTgBot(builder.Configuration);
-
-        // Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
         builder.Services.AddOpenApi();
+        builder.Services.AddEndpointsApiExplorer();
+        builder.Services.AddSwaggerGen();
+        builder.Services.AddPersistence(builder.Configuration);
+        builder.Services.AddAiServices(builder.Configuration);
+        builder.Services.AddScoped<ImportTelegramMessageHandler>();
+        builder.Services.AddScoped<ParseTelegramMessageHandler>();
+        builder.Services.AddScoped<RecommendWorkoutHandler>();
 
         var app = builder.Build();
 
-        // Configure the HTTP request pipeline.
+        await using (var scope = app.Services.CreateAsyncScope())
+        {
+            var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+            await dbContext.Database.MigrateAsync();
+        }
+
         if (app.Environment.IsDevelopment())
         {
             app.MapOpenApi();
         }
 
+        app.UseExceptionHandler();
+        app.UseSwagger();
+        app.UseSwaggerUI();
         app.UseHttpsRedirection();
-
         app.UseAuthorization();
 
-        var summaries = new[]
-        {
-            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-        };
+        var api = app.MapGroup("/api");
 
-        app.MapGet("/weatherforecast", (HttpContext httpContext) =>
+        api.MapPost("/messages/import", async (
+                ImportTelegramMessageRequest request,
+                ImportTelegramMessageHandler handler,
+                CancellationToken cancellationToken) =>
             {
-                var forecast = Enumerable.Range(1, 5).Select(index =>
-                        new WeatherForecast
-                        {
-                            Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
-                            TemperatureC = Random.Shared.Next(-20, 55),
-                            Summary = summaries[Random.Shared.Next(summaries.Length)]
-                        })
-                    .ToArray();
-                return forecast;
-            })
-            .WithName("GetWeatherForecast");
+                var id = await handler.HandleAsync(
+                    new ImportTelegramMessageCommand(
+                        request.UserId,
+                        request.TelegramUserId,
+                        request.TelegramChatId,
+                        request.TelegramMessageId,
+                        request.Text,
+                        request.SentAtUtc,
+                        request.Username,
+                        request.FirstName,
+                        request.LastName),
+                    cancellationToken);
 
-        app.Run();
+                return TypedResults.Accepted($"/api/messages/{id}", new ImportTelegramMessageResponse(id));
+            })
+            .WithName("ImportTelegramMessage");
+
+        api.MapPost("/workouts/recommend", async (
+                RecommendWorkoutRequest request,
+                RecommendWorkoutHandler handler,
+                CancellationToken cancellationToken) =>
+            {
+                var result = await handler.HandleAsync(
+                    new RecommendWorkoutCommand(request.UserId, request.GoalType, request.AdditionalContext),
+                    cancellationToken);
+
+                return TypedResults.Ok(result);
+            })
+            .WithName("RecommendWorkout");
+
+        api.MapGet("/workouts/history", async (
+                Guid userId,
+                IWorkoutRepository workoutRepository,
+                CancellationToken cancellationToken) =>
+            {
+                var history = await workoutRepository.GetHistoryAsync(userId, cancellationToken);
+
+                var response = history.Select(workout => new WorkoutHistoryItemResponse(
+                    workout.Id,
+                    workout.PerformedAtUtc,
+                    workout.Title,
+                    workout.Notes,
+                    workout.WorkoutExercises
+                        .OrderBy(x => x.Order)
+                        .Select(x => new WorkoutHistoryExerciseResponse(
+                            x.ExerciseId,
+                            x.Exercise?.Name ?? "Unknown exercise",
+                            x.Order,
+                            x.Notes,
+                            x.Sets.OrderBy(s => s.Order)
+                                .Select(s => new WorkoutHistorySetResponse(
+                                    s.Order,
+                                    s.Repetitions,
+                                    s.WeightKg,
+                                    s.DurationSeconds,
+                                    s.DistanceMeters,
+                                    s.Notes))
+                                .ToArray()))
+                        .ToArray()))
+                    .ToArray();
+
+                return TypedResults.Ok(response);
+            })
+            .WithName("GetWorkoutHistory");
+
+        await app.RunAsync();
     }
 }

GymLogAI.API/WeatherForecast.cs

@@ -1,12 +0,0 @@
-namespace GymLogAI.API;
-
-public class WeatherForecast
-{
-    public DateOnly Date { get; set; }
-
-    public int TemperatureC { get; set; }
-
-    public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-
-    public string? Summary { get; set; }
-}

GymLogAI.API/appsettings.Development.json

@@ -5,7 +5,13 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "TelegramBot": {
-    "BotToken": ""
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "OpenRouter": {
+    "BaseUrl": "https://openrouter.ai/api/v1/",
+    "ApiKey": "",
+    "ChatModel": "openai/gpt-4.1-mini",
+    "EmbeddingModel": "text-embedding-3-small"
   }
 }

GymLogAI.API/appsettings.json

@@ -5,8 +5,14 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "TelegramBot": {
-    "BotToken": ""
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "OpenRouter": {
+    "BaseUrl": "https://openrouter.ai/api/v1/",
+    "ApiKey": "",
+    "ChatModel": "openai/gpt-4.1-mini",
+    "EmbeddingModel": "text-embedding-3-small"
   },
   "AllowedHosts": "*"
 }

GymLogAI.Application/DTOs/ParsedExerciseDto.cs

@@ -0,0 +1,7 @@
+namespace GymLogAI.Application.DTOs;
+
+public sealed record ParsedExerciseDto(
+    string Name,
+    int Order,
+    string? Notes,
+    IReadOnlyCollection<ParsedExerciseSetDto> Sets);

GymLogAI.Application/DTOs/ParsedExerciseSetDto.cs

@@ -0,0 +1,9 @@
+namespace GymLogAI.Application.DTOs;
+
+public sealed record ParsedExerciseSetDto(
+    int Order,
+    int? Repetitions,
+    decimal? WeightKg,
+    int? DurationSeconds,
+    decimal? DistanceMeters,
+    string? Notes);

GymLogAI.Application/DTOs/ParsedWorkoutDto.cs

@@ -0,0 +1,7 @@
+namespace GymLogAI.Application.DTOs;
+
+public sealed record ParsedWorkoutDto(
+    DateTime PerformedAtUtc,
+    string? Title,
+    string? Notes,
+    IReadOnlyCollection<ParsedExerciseDto> Exercises);

GymLogAI.Application/DTOs/WorkoutRecommendationContext.cs

@@ -0,0 +1,8 @@
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Application.DTOs;
+
+public sealed record WorkoutRecommendationContext(
+    Guid UserId,
+    GoalType GoalType,
+    string? AdditionalContext);

GymLogAI.Application/DTOs/WorkoutRecommendationDto.cs

@@ -0,0 +1,7 @@
+namespace GymLogAI.Application.DTOs;
+
+public sealed record WorkoutRecommendationDto(
+    string Title,
+    string Summary,
+    IReadOnlyCollection<string> Exercises,
+    string RecoveryAdvice);

GymLogAI.Application/GymLogAI.Application.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net10.0</TargetFramework>
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+    <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
   </ItemGroup>
 
 </Project>

GymLogAI.Application/Handlers/ImportTelegramMessageHandler.cs

@@ -0,0 +1,66 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Abstractions;
+using GymLogAI.Core.Entities;
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Application.Handlers;
+
+public sealed class ImportTelegramMessageHandler(
+    IUserRepository userRepository,
+    ITelegramMessageRepository telegramMessageRepository,
+    IClock clock,
+    IIdGenerator idGenerator)
+{
+    public async Task<Guid> HandleAsync(ImportTelegramMessageCommand command, CancellationToken cancellationToken)
+    {
+        var user = await userRepository.GetByIdAsync(command.UserId, cancellationToken);
+        if (user is null)
+        {
+            user = new User
+            {
+                Id = command.UserId,
+                TelegramUserId = command.TelegramUserId,
+                Username = command.Username,
+                FirstName = command.FirstName,
+                LastName = command.LastName,
+                CreatedAtUtc = clock.UtcNow
+            };
+
+            await userRepository.AddAsync(user, cancellationToken);
+        }
+        else
+        {
+            user.TelegramUserId = command.TelegramUserId;
+            user.Username = command.Username ?? user.Username;
+            user.FirstName = command.FirstName ?? user.FirstName;
+            user.LastName = command.LastName ?? user.LastName;
+            await userRepository.UpdateAsync(user, cancellationToken);
+        }
+
+        var message = new TelegramMessage
+        {
+            Id = idGenerator.New(),
+            UserId = user.Id,
+            TelegramChatId = command.TelegramChatId,
+            TelegramMessageId = command.TelegramMessageId,
+            Text = command.Text,
+            SentAtUtc = command.SentAtUtc,
+            ImportedAtUtc = clock.UtcNow,
+            ParsingStatus = ParsingStatus.Pending
+        };
+
+        await telegramMessageRepository.AddAsync(message, cancellationToken);
+        return message.Id;
+    }
+}
+
+public sealed record ImportTelegramMessageCommand(
+    Guid UserId,
+    long TelegramUserId,
+    long TelegramChatId,
+    int TelegramMessageId,
+    string Text,
+    DateTime SentAtUtc,
+    string? Username,
+    string? FirstName,
+    string? LastName);

GymLogAI.Application/Handlers/ParseTelegramMessageHandler.cs

@@ -0,0 +1,108 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Abstractions;
+using GymLogAI.Core.Entities;
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Application.Handlers;
+
+public sealed class ParseTelegramMessageHandler(
+    ITelegramMessageRepository telegramMessageRepository,
+    IWorkoutRepository workoutRepository,
+    IExerciseRepository exerciseRepository,
+    IWorkoutParser workoutParser,
+    IEmbeddingService embeddingService,
+    IClock clock,
+    IIdGenerator idGenerator)
+{
+    public async Task<bool> HandleAsync(Guid telegramMessageId, CancellationToken cancellationToken)
+    {
+        var message = await telegramMessageRepository.GetByIdAsync(telegramMessageId, cancellationToken);
+        if (message is null)
+        {
+            return false;
+        }
+
+        message.ParsingStatus = ParsingStatus.Processing;
+        message.ParsingError = null;
+        await telegramMessageRepository.UpdateAsync(message, cancellationToken);
+
+        try
+        {
+            var parsedWorkout = await workoutParser.ParseAsync(message.Text, cancellationToken);
+            if (parsedWorkout is null || parsedWorkout.Exercises.Count == 0)
+            {
+                message.ParsingStatus = ParsingStatus.Failed;
+                message.ParsingError = "Unable to parse workout from message.";
+                message.ParsedAtUtc = clock.UtcNow;
+                await telegramMessageRepository.UpdateAsync(message, cancellationToken);
+                return false;
+            }
+
+            var workout = new Workout
+            {
+                Id = idGenerator.New(),
+                UserId = message.UserId,
+                SourceTelegramMessageId = message.Id,
+                PerformedAtUtc = parsedWorkout.PerformedAtUtc,
+                Title = parsedWorkout.Title,
+                Notes = parsedWorkout.Notes,
+                SourceType = WorkoutSourceType.Telegram,
+                CreatedAtUtc = clock.UtcNow
+            };
+
+            foreach (var parsedExercise in parsedWorkout.Exercises.OrderBy(x => x.Order))
+            {
+                var exercise = await exerciseRepository.GetByNameAsync(parsedExercise.Name, cancellationToken)
+                    ?? await exerciseRepository.AddAsync(new Exercise
+                    {
+                        Id = idGenerator.New(),
+                        Name = parsedExercise.Name.Trim(),
+                        CreatedAtUtc = clock.UtcNow,
+                        Embedding = await embeddingService.GenerateEmbeddingAsync(parsedExercise.Name, cancellationToken)
+                    }, cancellationToken);
+
+                var workoutExercise = new WorkoutExercise
+                {
+                    Id = idGenerator.New(),
+                    WorkoutId = workout.Id,
+                    ExerciseId = exercise.Id,
+                    Order = parsedExercise.Order,
+                    Notes = parsedExercise.Notes
+                };
+
+                foreach (var parsedSet in parsedExercise.Sets.OrderBy(x => x.Order))
+                {
+                    workoutExercise.Sets.Add(new ExerciseSet
+                    {
+                        Id = idGenerator.New(),
+                        WorkoutExerciseId = workoutExercise.Id,
+                        Order = parsedSet.Order,
+                        Repetitions = parsedSet.Repetitions,
+                        WeightKg = parsedSet.WeightKg,
+                        DurationSeconds = parsedSet.DurationSeconds,
+                        DistanceMeters = parsedSet.DistanceMeters,
+                        Notes = parsedSet.Notes
+                    });
+                }
+
+                workout.WorkoutExercises.Add(workoutExercise);
+            }
+
+            await workoutRepository.AddAsync(workout, cancellationToken);
+
+            message.WorkoutId = workout.Id;
+            message.ParsingStatus = ParsingStatus.Parsed;
+            message.ParsedAtUtc = clock.UtcNow;
+            await telegramMessageRepository.UpdateAsync(message, cancellationToken);
+            return true;
+        }
+        catch (Exception ex)
+        {
+            message.ParsingStatus = ParsingStatus.Failed;
+            message.ParsingError = ex.Message;
+            message.ParsedAtUtc = clock.UtcNow;
+            await telegramMessageRepository.UpdateAsync(message, cancellationToken);
+            return false;
+        }
+    }
+}

GymLogAI.Application/Handlers/RecommendWorkoutHandler.cs

@@ -0,0 +1,26 @@
+using GymLogAI.Application.DTOs;
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Application.Handlers;
+
+public sealed class RecommendWorkoutHandler(
+    IWorkoutRepository workoutRepository,
+    IWorkoutRecommendationGenerator workoutRecommendationGenerator)
+{
+    public async Task<WorkoutRecommendationDto> HandleAsync(
+        RecommendWorkoutCommand command,
+        CancellationToken cancellationToken)
+    {
+        var history = await workoutRepository.GetHistoryAsync(command.UserId, cancellationToken);
+
+        var context = new WorkoutRecommendationContext(
+            command.UserId,
+            command.GoalType,
+            command.AdditionalContext);
+
+        return await workoutRecommendationGenerator.GenerateAsync(context, history, cancellationToken);
+    }
+}
+
+public sealed record RecommendWorkoutCommand(Guid UserId, GoalType GoalType, string? AdditionalContext);

GymLogAI.Application/Interfaces/IEmbeddingService.cs

@@ -0,0 +1,6 @@
+namespace GymLogAI.Application.Interfaces;
+
+public interface IEmbeddingService
+{
+    Task<float[]> GenerateEmbeddingAsync(string input, CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/IExerciseRepository.cs

@@ -0,0 +1,10 @@
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface IExerciseRepository
+{
+    Task<Exercise?> GetByNameAsync(string name, CancellationToken cancellationToken);
+    Task<Exercise> AddAsync(Exercise exercise, CancellationToken cancellationToken);
+    Task<Exercise> UpdateAsync(Exercise exercise, CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/ITelegramMessageRepository.cs

@@ -0,0 +1,11 @@
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface ITelegramMessageRepository
+{
+    Task<TelegramMessage> AddAsync(TelegramMessage message, CancellationToken cancellationToken);
+    Task<TelegramMessage?> GetByIdAsync(Guid id, CancellationToken cancellationToken);
+    Task<IReadOnlyCollection<TelegramMessage>> GetPendingAsync(int take, CancellationToken cancellationToken);
+    Task<TelegramMessage> UpdateAsync(TelegramMessage message, CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/IUserRepository.cs

@@ -0,0 +1,11 @@
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface IUserRepository
+{
+    Task<User?> GetByIdAsync(Guid id, CancellationToken cancellationToken);
+    Task<User?> GetByTelegramUserIdAsync(long telegramUserId, CancellationToken cancellationToken);
+    Task<User> AddAsync(User user, CancellationToken cancellationToken);
+    Task<User> UpdateAsync(User user, CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/IWorkoutParser.cs

@@ -0,0 +1,8 @@
+using GymLogAI.Application.DTOs;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface IWorkoutParser
+{
+    Task<ParsedWorkoutDto?> ParseAsync(string text, CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/IWorkoutRecommendationGenerator.cs

@@ -0,0 +1,12 @@
+using GymLogAI.Application.DTOs;
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface IWorkoutRecommendationGenerator
+{
+    Task<WorkoutRecommendationDto> GenerateAsync(
+        WorkoutRecommendationContext context,
+        IReadOnlyCollection<Workout> workoutHistory,
+        CancellationToken cancellationToken);
+}

GymLogAI.Application/Interfaces/IWorkoutRepository.cs

@@ -0,0 +1,9 @@
+using GymLogAI.Core.Entities;
+
+namespace GymLogAI.Application.Interfaces;
+
+public interface IWorkoutRepository
+{
+    Task<Workout> AddAsync(Workout workout, CancellationToken cancellationToken);
+    Task<IReadOnlyCollection<Workout>> GetHistoryAsync(Guid userId, CancellationToken cancellationToken);
+}

GymLogAI.Core/Abstractions/IClock.cs

@@ -0,0 +1,6 @@
+namespace GymLogAI.Core.Abstractions;
+
+public interface IClock
+{
+    DateTime UtcNow { get; }
+}

GymLogAI.Core/Abstractions/IIdGenerator.cs

@@ -0,0 +1,6 @@
+namespace GymLogAI.Core.Abstractions;
+
+public interface IIdGenerator
+{
+    Guid New();
+}

GymLogAI.Core/Entities/Exercise.cs

@@ -0,0 +1,12 @@
+namespace GymLogAI.Core.Entities;
+
+public class Exercise
+{
+    public Guid Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public float[]? Embedding { get; set; }
+    public DateTime CreatedAtUtc { get; set; }
+
+    public List<WorkoutExercise> WorkoutExercises { get; set; } = [];
+}

GymLogAI.Core/Entities/ExerciseSet.cs

@@ -0,0 +1,15 @@
+namespace GymLogAI.Core.Entities;
+
+public class ExerciseSet
+{
+    public Guid Id { get; set; }
+    public Guid WorkoutExerciseId { get; set; }
+    public int Order { get; set; }
+    public decimal? WeightKg { get; set; }
+    public int? Repetitions { get; set; }
+    public int? DurationSeconds { get; set; }
+    public decimal? DistanceMeters { get; set; }
+    public string? Notes { get; set; }
+
+    public WorkoutExercise? WorkoutExercise { get; set; }
+}

GymLogAI.Core/Entities/TelegramMessage.cs

@@ -0,0 +1,21 @@
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Core.Entities;
+
+public class TelegramMessage
+{
+    public Guid Id { get; set; }
+    public Guid UserId { get; set; }
+    public long TelegramChatId { get; set; }
+    public int TelegramMessageId { get; set; }
+    public string Text { get; set; } = string.Empty;
+    public DateTime SentAtUtc { get; set; }
+    public DateTime ImportedAtUtc { get; set; }
+    public ParsingStatus ParsingStatus { get; set; }
+    public string? ParsingError { get; set; }
+    public Guid? WorkoutId { get; set; }
+    public DateTime? ParsedAtUtc { get; set; }
+
+    public User? User { get; set; }
+    public Workout? Workout { get; set; }
+}

GymLogAI.Core/Entities/User.cs

@@ -0,0 +1,14 @@
+namespace GymLogAI.Core.Entities;
+
+public class User
+{
+    public Guid Id { get; set; }
+    public long TelegramUserId { get; set; }
+    public string? Username { get; set; }
+    public string? FirstName { get; set; }
+    public string? LastName { get; set; }
+    public DateTime CreatedAtUtc { get; set; }
+
+    public List<TelegramMessage> TelegramMessages { get; set; } = [];
+    public List<Workout> Workouts { get; set; } = [];
+}

GymLogAI.Core/Entities/Workout.cs

@@ -0,0 +1,19 @@
+using GymLogAI.Core.Enums;
+
+namespace GymLogAI.Core.Entities;
+
+public class Workout
+{
+    public Guid Id { get; set; }
+    public Guid UserId { get; set; }
+    public Guid? SourceTelegramMessageId { get; set; }
+    public DateTime PerformedAtUtc { get; set; }
+    public string? Title { get; set; }
+    public string? Notes { get; set; }
+    public WorkoutSourceType SourceType { get; set; }
+    public DateTime CreatedAtUtc { get; set; }
+
+    public User? User { get; set; }
+    public TelegramMessage? SourceTelegramMessage { get; set; }
+    public List<WorkoutExercise> WorkoutExercises { get; set; } = [];
+}

GymLogAI.Core/Entities/WorkoutExercise.cs

@@ -0,0 +1,14 @@
+namespace GymLogAI.Core.Entities;
+
+public class WorkoutExercise
+{
+    public Guid Id { get; set; }
+    public Guid WorkoutId { get; set; }
+    public Guid ExerciseId { get; set; }
+    public int Order { get; set; }
+    public string? Notes { get; set; }
+
+    public Workout? Workout { get; set; }
+    public Exercise? Exercise { get; set; }
+    public List<ExerciseSet> Sets { get; set; } = [];
+}

GymLogAI.Core/Enums/GoalType.cs

@@ -0,0 +1,10 @@
+namespace GymLogAI.Core.Enums;
+
+public enum GoalType
+{
+    Maintain = 0,
+    Strength = 1,
+    Hypertrophy = 2,
+    Endurance = 3,
+    WeightLoss = 4
+}

GymLogAI.Core/Enums/ParsingStatus.cs

@@ -0,0 +1,9 @@
+namespace GymLogAI.Core.Enums;
+
+public enum ParsingStatus
+{
+    Pending = 0,
+    Processing = 1,
+    Parsed = 2,
+    Failed = 3
+}

GymLogAI.Core/Enums/WorkoutSourceType.cs

@@ -0,0 +1,8 @@
+namespace GymLogAI.Core.Enums;
+
+public enum WorkoutSourceType
+{
+    Manual = 0,
+    Telegram = 1,
+    Imported = 2
+}

GymLogAI.Core/GymLogAI.Core.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

GymLogAI.Persistence/AppDbContext.cs

@@ -0,0 +1,19 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace GymLogAI.Persistence;
+
+public class AppDbContext(DbContextOptions<AppDbContext> options) : DbContext(options)
+{
+    public DbSet<User> Users => Set<User>();
+    public DbSet<TelegramMessage> TelegramMessages => Set<TelegramMessage>();
+    public DbSet<Workout> Workouts => Set<Workout>();
+    public DbSet<Exercise> Exercises => Set<Exercise>();
+    public DbSet<WorkoutExercise> WorkoutExercises => Set<WorkoutExercise>();
+    public DbSet<ExerciseSet> ExerciseSets => Set<ExerciseSet>();
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.ApplyConfigurationsFromAssembly(typeof(AppDbContext).Assembly);
+    }
+}

GymLogAI.Persistence/Configurations/ExerciseConfiguration.cs

@@ -0,0 +1,20 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class ExerciseConfiguration : IEntityTypeConfiguration<Exercise>
+{
+    public void Configure(EntityTypeBuilder<Exercise> builder)
+    {
+        builder.ToTable("exercises");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.Name).HasMaxLength(256).IsRequired();
+        builder.Property(x => x.Description).HasMaxLength(2000);
+        builder.Property(x => x.Embedding).HasColumnType("real[]");
+
+        builder.HasIndex(x => x.Name).IsUnique();
+    }
+}

GymLogAI.Persistence/Configurations/ExerciseSetConfiguration.cs

@@ -0,0 +1,20 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class ExerciseSetConfiguration : IEntityTypeConfiguration<ExerciseSet>
+{
+    public void Configure(EntityTypeBuilder<ExerciseSet> builder)
+    {
+        builder.ToTable("exercise_sets");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.WeightKg).HasPrecision(8, 2);
+        builder.Property(x => x.DistanceMeters).HasPrecision(10, 2);
+        builder.Property(x => x.Notes).HasMaxLength(1000);
+
+        builder.HasIndex(x => new { x.WorkoutExerciseId, x.Order }).IsUnique();
+    }
+}

GymLogAI.Persistence/Configurations/TelegramMessageConfiguration.cs

@@ -0,0 +1,31 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class TelegramMessageConfiguration : IEntityTypeConfiguration<TelegramMessage>
+{
+    public void Configure(EntityTypeBuilder<TelegramMessage> builder)
+    {
+        builder.ToTable("telegram_messages");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.Text).HasMaxLength(4000).IsRequired();
+        builder.Property(x => x.ParsingError).HasMaxLength(2000);
+
+        builder.HasOne(x => x.User)
+            .WithMany(x => x.TelegramMessages)
+            .HasForeignKey(x => x.UserId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasOne(x => x.Workout)
+            .WithOne(x => x.SourceTelegramMessage)
+            .HasForeignKey<Workout>(x => x.SourceTelegramMessageId)
+            .IsRequired(false)
+            .OnDelete(DeleteBehavior.SetNull);
+
+        builder.HasIndex(x => new { x.UserId, x.ParsingStatus });
+        builder.HasIndex(x => new { x.TelegramChatId, x.TelegramMessageId }).IsUnique();
+    }
+}

GymLogAI.Persistence/Configurations/UserConfiguration.cs

@@ -0,0 +1,22 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class UserConfiguration : IEntityTypeConfiguration<User>
+{
+    public void Configure(EntityTypeBuilder<User> builder)
+    {
+        builder.ToTable("users");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.TelegramUserId).IsRequired();
+        builder.Property(x => x.Username).HasMaxLength(128);
+        builder.Property(x => x.FirstName).HasMaxLength(128);
+        builder.Property(x => x.LastName).HasMaxLength(128);
+        builder.Property(x => x.CreatedAtUtc).IsRequired();
+
+        builder.HasIndex(x => x.TelegramUserId).IsUnique();
+    }
+}

GymLogAI.Persistence/Configurations/WorkoutConfiguration.cs

@@ -0,0 +1,29 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class WorkoutConfiguration : IEntityTypeConfiguration<Workout>
+{
+    public void Configure(EntityTypeBuilder<Workout> builder)
+    {
+        builder.ToTable("workouts");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.Title).HasMaxLength(256);
+        builder.Property(x => x.Notes).HasMaxLength(4000);
+
+        builder.HasOne(x => x.User)
+            .WithMany(x => x.Workouts)
+            .HasForeignKey(x => x.UserId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasMany(x => x.WorkoutExercises)
+            .WithOne(x => x.Workout)
+            .HasForeignKey(x => x.WorkoutId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasIndex(x => new { x.UserId, x.PerformedAtUtc });
+    }
+}

GymLogAI.Persistence/Configurations/WorkoutExerciseConfiguration.cs

@@ -0,0 +1,28 @@
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace GymLogAI.Persistence.Configurations;
+
+public sealed class WorkoutExerciseConfiguration : IEntityTypeConfiguration<WorkoutExercise>
+{
+    public void Configure(EntityTypeBuilder<WorkoutExercise> builder)
+    {
+        builder.ToTable("workout_exercises");
+        builder.HasKey(x => x.Id);
+        builder.Property(x => x.Id).ValueGeneratedNever();
+        builder.Property(x => x.Notes).HasMaxLength(2000);
+
+        builder.HasOne(x => x.Exercise)
+            .WithMany(x => x.WorkoutExercises)
+            .HasForeignKey(x => x.ExerciseId)
+            .OnDelete(DeleteBehavior.Restrict);
+
+        builder.HasMany(x => x.Sets)
+            .WithOne(x => x.WorkoutExercise)
+            .HasForeignKey(x => x.WorkoutExerciseId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasIndex(x => new { x.WorkoutId, x.Order }).IsUnique();
+    }
+}

GymLogAI.Persistence/DependencyInjection.cs

@@ -0,0 +1,29 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Abstractions;
+using GymLogAI.Persistence.Infrastructure;
+using GymLogAI.Persistence.Repositories;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace GymLogAI.Persistence;
+
+public static class DependencyInjection
+{
+    public static IServiceCollection AddPersistence(this IServiceCollection services, IConfiguration configuration)
+    {
+        var connectionString = configuration.GetConnectionString("Postgres")
+            ?? "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres";
+
+        services.AddDbContext<AppDbContext>(options => options.UseNpgsql(connectionString));
+
+        services.AddScoped<IUserRepository, UserRepository>();
+        services.AddScoped<ITelegramMessageRepository, TelegramMessageRepository>();
+        services.AddScoped<IWorkoutRepository, WorkoutRepository>();
+        services.AddScoped<IExerciseRepository, ExerciseRepository>();
+        services.AddSingleton<IClock, SystemClock>();
+        services.AddSingleton<IIdGenerator, GuidIdGenerator>();
+
+        return services;
+    }
+}

GymLogAI.Persistence/DesignTimeAppDbContextFactory.cs

@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace GymLogAI.Persistence;
+
+public sealed class DesignTimeAppDbContextFactory : IDesignTimeDbContextFactory<AppDbContext>
+{
+    public AppDbContext CreateDbContext(string[] args)
+    {
+        var optionsBuilder = new DbContextOptionsBuilder<AppDbContext>();
+        optionsBuilder.UseNpgsql("Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres");
+
+        return new AppDbContext(optionsBuilder.Options);
+    }
+}

GymLogAI.Persistence/GymLogAI.Persistence.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="10.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GymLogAI.Application\GymLogAI.Application.csproj" />
+    <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
+  </ItemGroup>
+
+</Project>

GymLogAI.Persistence/Infrastructure/GuidIdGenerator.cs

@@ -0,0 +1,8 @@
+using GymLogAI.Core.Abstractions;
+
+namespace GymLogAI.Persistence.Infrastructure;
+
+public sealed class GuidIdGenerator : IIdGenerator
+{
+    public Guid New() => Guid.NewGuid();
+}

GymLogAI.Persistence/Infrastructure/SystemClock.cs

@@ -0,0 +1,8 @@
+using GymLogAI.Core.Abstractions;
+
+namespace GymLogAI.Persistence.Infrastructure;
+
+public sealed class SystemClock : IClock
+{
+    public DateTime UtcNow => DateTime.UtcNow;
+}

GymLogAI.Persistence/Migrations/20260419100551_InitialCreate.Designer.cs

@@ -0,0 +1,326 @@
+// <auto-generated />
+using System;
+using GymLogAI.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace GymLogAI.Persistence.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260419100551_InitialCreate")]
+    partial class InitialCreate
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Exercise", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.PrimitiveCollection<float[]>("Embedding")
+                        .HasColumnType("real[]");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("exercises", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.ExerciseSet", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<decimal?>("DistanceMeters")
+                        .HasPrecision(10, 2)
+                        .HasColumnType("numeric(10,2)");
+
+                    b.Property<int?>("DurationSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("Repetitions")
+                        .HasColumnType("integer");
+
+                    b.Property<decimal?>("WeightKg")
+                        .HasPrecision(8, 2)
+                        .HasColumnType("numeric(8,2)");
+
+                    b.Property<Guid>("WorkoutExerciseId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkoutExerciseId", "Order")
+                        .IsUnique();
+
+                    b.ToTable("exercise_sets", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("ImportedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("ParsedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ParsingError")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.Property<int>("ParsingStatus")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("SentAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<long>("TelegramChatId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("TelegramMessageId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid?>("WorkoutId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TelegramChatId", "TelegramMessageId")
+                        .IsUnique();
+
+                    b.HasIndex("UserId", "ParsingStatus");
+
+                    b.ToTable("telegram_messages", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("FirstName")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<string>("LastName")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<long>("TelegramUserId")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("Username")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TelegramUserId")
+                        .IsUnique();
+
+                    b.ToTable("users", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<DateTime>("PerformedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid?>("SourceTelegramMessageId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("SourceType")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SourceTelegramMessageId")
+                        .IsUnique();
+
+                    b.HasIndex("UserId", "PerformedAtUtc");
+
+                    b.ToTable("workouts", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ExerciseId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("integer");
+
+                    b.Property<Guid>("WorkoutId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ExerciseId");
+
+                    b.HasIndex("WorkoutId", "Order")
+                        .IsUnique();
+
+                    b.ToTable("workout_exercises", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.ExerciseSet", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.WorkoutExercise", "WorkoutExercise")
+                        .WithMany("Sets")
+                        .HasForeignKey("WorkoutExerciseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("WorkoutExercise");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.User", "User")
+                        .WithMany("TelegramMessages")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.TelegramMessage", "SourceTelegramMessage")
+                        .WithOne("Workout")
+                        .HasForeignKey("GymLogAI.Core.Entities.Workout", "SourceTelegramMessageId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("GymLogAI.Core.Entities.User", "User")
+                        .WithMany("Workouts")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("SourceTelegramMessage");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.Exercise", "Exercise")
+                        .WithMany("WorkoutExercises")
+                        .HasForeignKey("ExerciseId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("GymLogAI.Core.Entities.Workout", "Workout")
+                        .WithMany("WorkoutExercises")
+                        .HasForeignKey("WorkoutId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Exercise");
+
+                    b.Navigation("Workout");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Exercise", b =>
+                {
+                    b.Navigation("WorkoutExercises");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.Navigation("Workout");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.User", b =>
+                {
+                    b.Navigation("TelegramMessages");
+
+                    b.Navigation("Workouts");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.Navigation("WorkoutExercises");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.Navigation("Sets");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

GymLogAI.Persistence/Migrations/20260419100551_InitialCreate.cs

@@ -0,0 +1,227 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace GymLogAI.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitialCreate : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "exercises",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    Name = table.Column<string>(type: "character varying(256)", maxLength: 256, nullable: false),
+                    Description = table.Column<string>(type: "character varying(2000)", maxLength: 2000, nullable: true),
+                    Embedding = table.Column<float[]>(type: "real[]", nullable: true),
+                    CreatedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_exercises", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "users",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    TelegramUserId = table.Column<long>(type: "bigint", nullable: false),
+                    Username = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: true),
+                    FirstName = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: true),
+                    LastName = table.Column<string>(type: "character varying(128)", maxLength: 128, nullable: true),
+                    CreatedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "telegram_messages",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    UserId = table.Column<Guid>(type: "uuid", nullable: false),
+                    TelegramChatId = table.Column<long>(type: "bigint", nullable: false),
+                    TelegramMessageId = table.Column<int>(type: "integer", nullable: false),
+                    Text = table.Column<string>(type: "character varying(4000)", maxLength: 4000, nullable: false),
+                    SentAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    ImportedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    ParsingStatus = table.Column<int>(type: "integer", nullable: false),
+                    ParsingError = table.Column<string>(type: "character varying(2000)", maxLength: 2000, nullable: true),
+                    WorkoutId = table.Column<Guid>(type: "uuid", nullable: true),
+                    ParsedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_telegram_messages", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_telegram_messages_users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "workouts",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    UserId = table.Column<Guid>(type: "uuid", nullable: false),
+                    SourceTelegramMessageId = table.Column<Guid>(type: "uuid", nullable: true),
+                    PerformedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    Title = table.Column<string>(type: "character varying(256)", maxLength: 256, nullable: true),
+                    Notes = table.Column<string>(type: "character varying(4000)", maxLength: 4000, nullable: true),
+                    SourceType = table.Column<int>(type: "integer", nullable: false),
+                    CreatedAtUtc = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_workouts", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_workouts_telegram_messages_SourceTelegramMessageId",
+                        column: x => x.SourceTelegramMessageId,
+                        principalTable: "telegram_messages",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.SetNull);
+                    table.ForeignKey(
+                        name: "FK_workouts_users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "workout_exercises",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    WorkoutId = table.Column<Guid>(type: "uuid", nullable: false),
+                    ExerciseId = table.Column<Guid>(type: "uuid", nullable: false),
+                    Order = table.Column<int>(type: "integer", nullable: false),
+                    Notes = table.Column<string>(type: "character varying(2000)", maxLength: 2000, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_workout_exercises", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_workout_exercises_exercises_ExerciseId",
+                        column: x => x.ExerciseId,
+                        principalTable: "exercises",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_workout_exercises_workouts_WorkoutId",
+                        column: x => x.WorkoutId,
+                        principalTable: "workouts",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "exercise_sets",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    WorkoutExerciseId = table.Column<Guid>(type: "uuid", nullable: false),
+                    Order = table.Column<int>(type: "integer", nullable: false),
+                    WeightKg = table.Column<decimal>(type: "numeric(8,2)", precision: 8, scale: 2, nullable: true),
+                    Repetitions = table.Column<int>(type: "integer", nullable: true),
+                    DurationSeconds = table.Column<int>(type: "integer", nullable: true),
+                    DistanceMeters = table.Column<decimal>(type: "numeric(10,2)", precision: 10, scale: 2, nullable: true),
+                    Notes = table.Column<string>(type: "character varying(1000)", maxLength: 1000, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_exercise_sets", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_exercise_sets_workout_exercises_WorkoutExerciseId",
+                        column: x => x.WorkoutExerciseId,
+                        principalTable: "workout_exercises",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_exercise_sets_WorkoutExerciseId_Order",
+                table: "exercise_sets",
+                columns: new[] { "WorkoutExerciseId", "Order" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_exercises_Name",
+                table: "exercises",
+                column: "Name",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_telegram_messages_TelegramChatId_TelegramMessageId",
+                table: "telegram_messages",
+                columns: new[] { "TelegramChatId", "TelegramMessageId" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_telegram_messages_UserId_ParsingStatus",
+                table: "telegram_messages",
+                columns: new[] { "UserId", "ParsingStatus" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_users_TelegramUserId",
+                table: "users",
+                column: "TelegramUserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_workout_exercises_ExerciseId",
+                table: "workout_exercises",
+                column: "ExerciseId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_workout_exercises_WorkoutId_Order",
+                table: "workout_exercises",
+                columns: new[] { "WorkoutId", "Order" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_workouts_SourceTelegramMessageId",
+                table: "workouts",
+                column: "SourceTelegramMessageId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_workouts_UserId_PerformedAtUtc",
+                table: "workouts",
+                columns: new[] { "UserId", "PerformedAtUtc" });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "exercise_sets");
+
+            migrationBuilder.DropTable(
+                name: "workout_exercises");
+
+            migrationBuilder.DropTable(
+                name: "exercises");
+
+            migrationBuilder.DropTable(
+                name: "workouts");
+
+            migrationBuilder.DropTable(
+                name: "telegram_messages");
+
+            migrationBuilder.DropTable(
+                name: "users");
+        }
+    }
+}

GymLogAI.Persistence/Migrations/AppDbContextModelSnapshot.cs

@@ -0,0 +1,323 @@
+// <auto-generated />
+using System;
+using GymLogAI.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace GymLogAI.Persistence.Migrations
+{
+    [DbContext(typeof(AppDbContext))]
+    partial class AppDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "10.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Exercise", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.PrimitiveCollection<float[]>("Embedding")
+                        .HasColumnType("real[]");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("exercises", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.ExerciseSet", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<decimal?>("DistanceMeters")
+                        .HasPrecision(10, 2)
+                        .HasColumnType("numeric(10,2)");
+
+                    b.Property<int?>("DurationSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(1000)
+                        .HasColumnType("character varying(1000)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("Repetitions")
+                        .HasColumnType("integer");
+
+                    b.Property<decimal?>("WeightKg")
+                        .HasPrecision(8, 2)
+                        .HasColumnType("numeric(8,2)");
+
+                    b.Property<Guid>("WorkoutExerciseId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("WorkoutExerciseId", "Order")
+                        .IsUnique();
+
+                    b.ToTable("exercise_sets", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("ImportedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("ParsedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ParsingError")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.Property<int>("ParsingStatus")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("SentAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<long>("TelegramChatId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("TelegramMessageId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid?>("WorkoutId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TelegramChatId", "TelegramMessageId")
+                        .IsUnique();
+
+                    b.HasIndex("UserId", "ParsingStatus");
+
+                    b.ToTable("telegram_messages", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("FirstName")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<string>("LastName")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.Property<long>("TelegramUserId")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("Username")
+                        .HasMaxLength(128)
+                        .HasColumnType("character varying(128)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TelegramUserId")
+                        .IsUnique();
+
+                    b.ToTable("users", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(4000)
+                        .HasColumnType("character varying(4000)");
+
+                    b.Property<DateTime>("PerformedAtUtc")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid?>("SourceTelegramMessageId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("SourceType")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasMaxLength(256)
+                        .HasColumnType("character varying(256)");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SourceTelegramMessageId")
+                        .IsUnique();
+
+                    b.HasIndex("UserId", "PerformedAtUtc");
+
+                    b.ToTable("workouts", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ExerciseId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("integer");
+
+                    b.Property<Guid>("WorkoutId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ExerciseId");
+
+                    b.HasIndex("WorkoutId", "Order")
+                        .IsUnique();
+
+                    b.ToTable("workout_exercises", (string)null);
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.ExerciseSet", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.WorkoutExercise", "WorkoutExercise")
+                        .WithMany("Sets")
+                        .HasForeignKey("WorkoutExerciseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("WorkoutExercise");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.User", "User")
+                        .WithMany("TelegramMessages")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.TelegramMessage", "SourceTelegramMessage")
+                        .WithOne("Workout")
+                        .HasForeignKey("GymLogAI.Core.Entities.Workout", "SourceTelegramMessageId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("GymLogAI.Core.Entities.User", "User")
+                        .WithMany("Workouts")
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("SourceTelegramMessage");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.HasOne("GymLogAI.Core.Entities.Exercise", "Exercise")
+                        .WithMany("WorkoutExercises")
+                        .HasForeignKey("ExerciseId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("GymLogAI.Core.Entities.Workout", "Workout")
+                        .WithMany("WorkoutExercises")
+                        .HasForeignKey("WorkoutId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Exercise");
+
+                    b.Navigation("Workout");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Exercise", b =>
+                {
+                    b.Navigation("WorkoutExercises");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.TelegramMessage", b =>
+                {
+                    b.Navigation("Workout");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.User", b =>
+                {
+                    b.Navigation("TelegramMessages");
+
+                    b.Navigation("Workouts");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.Workout", b =>
+                {
+                    b.Navigation("WorkoutExercises");
+                });
+
+            modelBuilder.Entity("GymLogAI.Core.Entities.WorkoutExercise", b =>
+                {
+                    b.Navigation("Sets");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

GymLogAI.Persistence/Repositories/ExerciseRepository.cs

@@ -0,0 +1,27 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace GymLogAI.Persistence.Repositories;
+
+public sealed class ExerciseRepository(AppDbContext dbContext) : IExerciseRepository
+{
+    public async Task<Exercise?> GetByNameAsync(string name, CancellationToken cancellationToken)
+    {
+        return await dbContext.Exercises.SingleOrDefaultAsync(x => x.Name == name, cancellationToken);
+    }
+
+    public async Task<Exercise> AddAsync(Exercise exercise, CancellationToken cancellationToken)
+    {
+        dbContext.Exercises.Add(exercise);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return exercise;
+    }
+
+    public async Task<Exercise> UpdateAsync(Exercise exercise, CancellationToken cancellationToken)
+    {
+        dbContext.Exercises.Update(exercise);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return exercise;
+    }
+}

GymLogAI.Persistence/Repositories/TelegramMessageRepository.cs

@@ -0,0 +1,37 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Entities;
+using GymLogAI.Core.Enums;
+using Microsoft.EntityFrameworkCore;
+
+namespace GymLogAI.Persistence.Repositories;
+
+public sealed class TelegramMessageRepository(AppDbContext dbContext) : ITelegramMessageRepository
+{
+    public async Task<TelegramMessage> AddAsync(TelegramMessage message, CancellationToken cancellationToken)
+    {
+        dbContext.TelegramMessages.Add(message);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return message;
+    }
+
+    public async Task<TelegramMessage?> GetByIdAsync(Guid id, CancellationToken cancellationToken)
+    {
+        return await dbContext.TelegramMessages.SingleOrDefaultAsync(x => x.Id == id, cancellationToken);
+    }
+
+    public async Task<IReadOnlyCollection<TelegramMessage>> GetPendingAsync(int take, CancellationToken cancellationToken)
+    {
+        return await dbContext.TelegramMessages
+            .Where(x => x.ParsingStatus == ParsingStatus.Pending)
+            .OrderBy(x => x.ImportedAtUtc)
+            .Take(take)
+            .ToListAsync(cancellationToken);
+    }
+
+    public async Task<TelegramMessage> UpdateAsync(TelegramMessage message, CancellationToken cancellationToken)
+    {
+        dbContext.TelegramMessages.Update(message);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return message;
+    }
+}

GymLogAI.Persistence/Repositories/UserRepository.cs

@@ -0,0 +1,32 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace GymLogAI.Persistence.Repositories;
+
+public sealed class UserRepository(AppDbContext dbContext) : IUserRepository
+{
+    public async Task<User?> GetByIdAsync(Guid id, CancellationToken cancellationToken)
+    {
+        return await dbContext.Users.SingleOrDefaultAsync(x => x.Id == id, cancellationToken);
+    }
+
+    public async Task<User?> GetByTelegramUserIdAsync(long telegramUserId, CancellationToken cancellationToken)
+    {
+        return await dbContext.Users.SingleOrDefaultAsync(x => x.TelegramUserId == telegramUserId, cancellationToken);
+    }
+
+    public async Task<User> AddAsync(User user, CancellationToken cancellationToken)
+    {
+        dbContext.Users.Add(user);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return user;
+    }
+
+    public async Task<User> UpdateAsync(User user, CancellationToken cancellationToken)
+    {
+        dbContext.Users.Update(user);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return user;
+    }
+}

GymLogAI.Persistence/Repositories/WorkoutRepository.cs

@@ -0,0 +1,28 @@
+using GymLogAI.Application.Interfaces;
+using GymLogAI.Core.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace GymLogAI.Persistence.Repositories;
+
+public sealed class WorkoutRepository(AppDbContext dbContext) : IWorkoutRepository
+{
+    public async Task<Workout> AddAsync(Workout workout, CancellationToken cancellationToken)
+    {
+        dbContext.Workouts.Add(workout);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return workout;
+    }
+
+    public async Task<IReadOnlyCollection<Workout>> GetHistoryAsync(Guid userId, CancellationToken cancellationToken)
+    {
+        return await dbContext.Workouts
+            .AsNoTracking()
+            .Include(x => x.WorkoutExercises)
+            .ThenInclude(x => x.Exercise)
+            .Include(x => x.WorkoutExercises)
+            .ThenInclude(x => x.Sets)
+            .Where(x => x.UserId == userId)
+            .OrderByDescending(x => x.PerformedAtUtc)
+            .ToListAsync(cancellationToken);
+    }
+}

GymLogAI.TelegramBot/Dockerfile

@@ -0,0 +1,21 @@
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
+USER $APP_UID
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["GymLogAI.TelegramBot/GymLogAI.TelegramBot.csproj", "GymLogAI.TelegramBot/"]
+COPY ["GymLogAI.Application/GymLogAI.Application.csproj", "GymLogAI.Application/"]
+COPY ["GymLogAI.AI/GymLogAI.AI.csproj", "GymLogAI.AI/"]
+COPY ["GymLogAI.Core/GymLogAI.Core.csproj", "GymLogAI.Core/"]
+COPY ["GymLogAI.Persistence/GymLogAI.Persistence.csproj", "GymLogAI.Persistence/"]
+RUN dotnet restore "GymLogAI.TelegramBot/GymLogAI.TelegramBot.csproj"
+COPY . .
+WORKDIR "/src/GymLogAI.TelegramBot"
+RUN dotnet publish "./GymLogAI.TelegramBot.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+ENTRYPOINT ["dotnet", "GymLogAI.TelegramBot.dll"]

GymLogAI.TelegramBot/GymLogAI.TelegramBot.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <OutputType>Exe</OutputType>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Telegram.Bot" Version="22.9.6.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GymLogAI.Application\GymLogAI.Application.csproj" />
+    <ProjectReference Include="..\GymLogAI.AI\GymLogAI.AI.csproj" />
+    <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
+    <ProjectReference Include="..\GymLogAI.Persistence\GymLogAI.Persistence.csproj" />
+  </ItemGroup>
+
+</Project>

GymLogAI.TelegramBot/Program.cs

@@ -0,0 +1,44 @@
+using GymLogAI.AI;
+using GymLogAI.Application.Handlers;
+using GymLogAI.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Telegram.Bot;
+
+namespace GymLogAI.TelegramBot;
+
+public static class Program
+{
+    public static async Task Main(string[] args)
+    {
+        var builder = Host.CreateApplicationBuilder(args);
+
+        builder.Services
+            .AddOptions<TelegramBotOptions>()
+            .Bind(builder.Configuration.GetSection(TelegramBotOptions.SectionName));
+
+        builder.Services.AddPersistence(builder.Configuration);
+        builder.Services.AddAiServices(builder.Configuration);
+        builder.Services.AddScoped<ImportTelegramMessageHandler>();
+        builder.Services.AddScoped<ParseTelegramMessageHandler>();
+        builder.Services.AddScoped<RecommendWorkoutHandler>();
+        builder.Services.AddSingleton<ITelegramBotClient>(serviceProvider =>
+        {
+            var options = serviceProvider.GetRequiredService<Microsoft.Extensions.Options.IOptions<TelegramBotOptions>>().Value;
+            return new TelegramBotClient(options.BotToken ?? string.Empty);
+        });
+        builder.Services.AddScoped<UpdateHandler>();
+        builder.Services.AddHostedService<TelegramBotHostedService>();
+
+        var host = builder.Build();
+
+        await using (var scope = host.Services.CreateAsyncScope())
+        {
+            var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+            await dbContext.Database.MigrateAsync();
+        }
+
+        await host.RunAsync();
+    }
+}

GymLogAI.TelegramBot/TelegramBotHostedService.cs

@@ -0,0 +1,53 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Telegram.Bot;
+using Telegram.Bot.Polling;
+using Telegram.Bot.Types.Enums;
+
+namespace GymLogAI.TelegramBot;
+
+public sealed class TelegramBotHostedService(
+    ITelegramBotClient botClient,
+    IServiceProvider serviceProvider,
+    IOptions<TelegramBotOptions> options,
+    ILogger<TelegramBotHostedService> logger) : BackgroundService
+{
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        if (string.IsNullOrWhiteSpace(options.Value.BotToken))
+        {
+            logger.LogWarning("Telegram bot token is not configured. Bot polling is disabled.");
+            return;
+        }
+
+        var receiverOptions = new ReceiverOptions
+        {
+            AllowedUpdates = [UpdateType.Message]
+        };
+
+        botClient.StartReceiving(
+            async (client, update, cancellationToken) =>
+            {
+                await using var scope = serviceProvider.CreateAsyncScope();
+                var handler = scope.ServiceProvider.GetRequiredService<UpdateHandler>();
+                await handler.HandleUpdateAsync(client, update, cancellationToken);
+            },
+            async (client, exception, cancellationToken) =>
+            {
+                await using var scope = serviceProvider.CreateAsyncScope();
+                var handler = scope.ServiceProvider.GetRequiredService<UpdateHandler>();
+                await handler.HandleErrorAsync(client, exception, cancellationToken);
+            },
+            receiverOptions,
+            stoppingToken);
+
+        logger.LogInformation("Telegram bot long polling started.");
+
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            await Task.Delay(TimeSpan.FromSeconds(options.Value.PollingTimeoutSeconds), stoppingToken);
+        }
+    }
+}

GymLogAI.TelegramBot/TelegramBotOptions.cs

@@ -1,8 +1,9 @@
-namespace GymLogAI.TgBot;
+namespace GymLogAI.TelegramBot;
 
 public sealed record TelegramBotOptions
 {
     public const string SectionName = "TelegramBot";
 
     public string? BotToken { get; init; }
+    public int PollingTimeoutSeconds { get; init; } = 5;
 }

GymLogAI.TelegramBot/UpdateHandler.cs

@@ -0,0 +1,82 @@
+using GymLogAI.Application.Handlers;
+using GymLogAI.Core.Enums;
+using Microsoft.Extensions.Logging;
+using Telegram.Bot;
+using Telegram.Bot.Types;
+using Telegram.Bot.Types.Enums;
+
+namespace GymLogAI.TelegramBot;
+
+public sealed class UpdateHandler(
+    ImportTelegramMessageHandler importTelegramMessageHandler,
+    RecommendWorkoutHandler recommendWorkoutHandler,
+    ILogger<UpdateHandler> logger)
+{
+    public async Task HandleUpdateAsync(ITelegramBotClient botClient, Update update, CancellationToken cancellationToken)
+    {
+        if (update.Type != UpdateType.Message || update.Message?.Text is null)
+        {
+            return;
+        }
+
+        var message = update.Message;
+        var text = message.Text.Trim();
+
+        if (text.Equals("/start", StringComparison.OrdinalIgnoreCase))
+        {
+            await botClient.SendMessage(
+                message.Chat.Id,
+                "GymLogAI bot is ready. Send workout text or use /today for a recommendation.",
+                cancellationToken: cancellationToken);
+            return;
+        }
+
+        if (text.Equals("/today", StringComparison.OrdinalIgnoreCase))
+        {
+            var userId = CreateUserId(message.From?.Id ?? message.Chat.Id);
+            var recommendation = await recommendWorkoutHandler.HandleAsync(
+                new RecommendWorkoutCommand(userId, GoalType.Maintain, "Requested from Telegram command /today"),
+                cancellationToken);
+
+            await botClient.SendMessage(
+                message.Chat.Id,
+                $"{recommendation.Title}\n{recommendation.Summary}\nExercises: {string.Join(", ", recommendation.Exercises)}",
+                cancellationToken: cancellationToken);
+            return;
+        }
+
+        var importedMessageId = await importTelegramMessageHandler.HandleAsync(
+            new ImportTelegramMessageCommand(
+                CreateUserId(message.From?.Id ?? message.Chat.Id),
+                message.From?.Id ?? message.Chat.Id,
+                message.Chat.Id,
+                message.MessageId,
+                text,
+                message.Date.ToUniversalTime(),
+                message.From?.Username,
+                message.From?.FirstName,
+                message.From?.LastName),
+            cancellationToken);
+
+        logger.LogInformation("Imported telegram message {MessageId} from chat {ChatId}", importedMessageId, message.Chat.Id);
+
+        await botClient.SendMessage(
+            message.Chat.Id,
+            "Message imported. It will be parsed by the worker shortly.",
+            cancellationToken: cancellationToken);
+    }
+
+    public Task HandleErrorAsync(ITelegramBotClient botClient, Exception exception, CancellationToken cancellationToken)
+    {
+        logger.LogError(exception, "Telegram bot polling error");
+        return Task.CompletedTask;
+    }
+
+    private static Guid CreateUserId(long telegramUserId)
+    {
+        Span<byte> buffer = stackalloc byte[16];
+        BitConverter.TryWriteBytes(buffer[..8], telegramUserId);
+        BitConverter.TryWriteBytes(buffer[8..], telegramUserId);
+        return new Guid(buffer);
+    }
+}

GymLogAI.TelegramBot/appsettings.Development.json

@@ -0,0 +1,9 @@
+{
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "TelegramBot": {
+    "BotToken": "",
+    "PollingTimeoutSeconds": 5
+  }
+}

GymLogAI.TelegramBot/appsettings.json

@@ -0,0 +1,21 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "TelegramBot": {
+    "BotToken": "",
+    "PollingTimeoutSeconds": 5
+  },
+  "OpenRouter": {
+    "BaseUrl": "https://openrouter.ai/api/v1/",
+    "ApiKey": "",
+    "ChatModel": "openai/gpt-4.1-mini",
+    "EmbeddingModel": "text-embedding-3-small"
+  }
+}

GymLogAI.TgBot/TgBotServiceCollectionExtensions.cs

@@ -1,19 +0,0 @@
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-
-namespace GymLogAI.TgBot;
-
-public static class TgBotServiceCollectionExtensions
-{
-    public static IServiceCollection AddTgBot(this IServiceCollection services, IConfiguration configuration)
-    {
-        ArgumentNullException.ThrowIfNull(services);
-        ArgumentNullException.ThrowIfNull(configuration);
-
-        services
-            .AddOptions<TelegramBotOptions>()
-            .Bind(configuration.GetSection(TelegramBotOptions.SectionName));
-
-        return services;
-    }
-}

GymLogAI.Worker/Dockerfile

@@ -0,0 +1,21 @@
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS base
+USER $APP_UID
+WORKDIR /app
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["GymLogAI.Worker/GymLogAI.Worker.csproj", "GymLogAI.Worker/"]
+COPY ["GymLogAI.Application/GymLogAI.Application.csproj", "GymLogAI.Application/"]
+COPY ["GymLogAI.AI/GymLogAI.AI.csproj", "GymLogAI.AI/"]
+COPY ["GymLogAI.Core/GymLogAI.Core.csproj", "GymLogAI.Core/"]
+COPY ["GymLogAI.Persistence/GymLogAI.Persistence.csproj", "GymLogAI.Persistence/"]
+RUN dotnet restore "GymLogAI.Worker/GymLogAI.Worker.csproj"
+COPY . .
+WORKDIR "/src/GymLogAI.Worker"
+RUN dotnet publish "./GymLogAI.Worker.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=build /app/publish .
+ENTRYPOINT ["dotnet", "GymLogAI.Worker.dll"]

GymLogAI.Worker/GymLogAI.Worker.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk.Worker">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>dotnet-GymLogAI.Worker-bf7dded7-f871-4b7d-a513-0a677ed83bd3</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.6" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\GymLogAI.Application\GymLogAI.Application.csproj" />
+    <ProjectReference Include="..\GymLogAI.AI\GymLogAI.AI.csproj" />
+    <ProjectReference Include="..\GymLogAI.Core\GymLogAI.Core.csproj" />
+    <ProjectReference Include="..\GymLogAI.Persistence\GymLogAI.Persistence.csproj" />
+  </ItemGroup>
+</Project>

GymLogAI.Worker/ParsePendingTelegramMessagesJob.cs

@@ -0,0 +1,40 @@
+using GymLogAI.Application.Handlers;
+using GymLogAI.Application.Interfaces;
+using Microsoft.Extensions.Options;
+
+namespace GymLogAI.Worker;
+
+public sealed class ParsePendingTelegramMessagesJob(
+    IServiceProvider serviceProvider,
+    IOptions<WorkerOptions> options,
+    ILogger<ParsePendingTelegramMessagesJob> logger) : BackgroundService
+{
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                await using var scope = serviceProvider.CreateAsyncScope();
+                var repository = scope.ServiceProvider.GetRequiredService<ITelegramMessageRepository>();
+                var handler = scope.ServiceProvider.GetRequiredService<ParseTelegramMessageHandler>();
+
+                var pendingMessages = await repository.GetPendingAsync(options.Value.BatchSize, stoppingToken);
+                foreach (var pendingMessage in pendingMessages)
+                {
+                    await handler.HandleAsync(pendingMessage.Id, stoppingToken);
+                }
+            }
+            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to process pending telegram messages.");
+            }
+
+            await Task.Delay(TimeSpan.FromSeconds(options.Value.PollingIntervalSeconds), stoppingToken);
+        }
+    }
+}

GymLogAI.Worker/Program.cs

@@ -0,0 +1,26 @@
+using GymLogAI.AI;
+using GymLogAI.Application.Handlers;
+using GymLogAI.Persistence;
+using GymLogAI.Worker;
+using Microsoft.EntityFrameworkCore;
+
+var builder = Host.CreateApplicationBuilder(args);
+builder.Services
+    .AddOptions<WorkerOptions>()
+    .Bind(builder.Configuration.GetSection(WorkerOptions.SectionName));
+builder.Services.AddPersistence(builder.Configuration);
+builder.Services.AddAiServices(builder.Configuration);
+builder.Services.AddScoped<ImportTelegramMessageHandler>();
+builder.Services.AddScoped<ParseTelegramMessageHandler>();
+builder.Services.AddScoped<RecommendWorkoutHandler>();
+builder.Services.AddHostedService<ParsePendingTelegramMessagesJob>();
+
+var host = builder.Build();
+
+await using (var scope = host.Services.CreateAsyncScope())
+{
+    var dbContext = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+    await dbContext.Database.MigrateAsync();
+}
+
+await host.RunAsync();

GymLogAI.Worker/Properties/launchSettings.json

@@ -0,0 +1,12 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "GymLogAI.Worker": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

GymLogAI.Worker/WorkerOptions.cs

@@ -0,0 +1,9 @@
+namespace GymLogAI.Worker;
+
+public sealed record WorkerOptions
+{
+    public const string SectionName = "Worker";
+
+    public int BatchSize { get; init; } = 20;
+    public int PollingIntervalSeconds { get; init; } = 10;
+}

GymLogAI.Worker/appsettings.Development.json

@@ -0,0 +1,15 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "Worker": {
+    "BatchSize": 20,
+    "PollingIntervalSeconds": 10
+  }
+}

GymLogAI.Worker/appsettings.json

@@ -0,0 +1,21 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "ConnectionStrings": {
+    "Postgres": "Host=localhost;Port=5432;Database=gymlogai;Username=postgres;Password=postgres"
+  },
+  "Worker": {
+    "BatchSize": 20,
+    "PollingIntervalSeconds": 10
+  },
+  "OpenRouter": {
+    "BaseUrl": "https://openrouter.ai/api/v1/",
+    "ApiKey": "",
+    "ChatModel": "openai/gpt-4.1-mini",
+    "EmbeddingModel": "text-embedding-3-small"
+  }
+}

GymLogAI.sln

@@ -7,21 +7,114 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		compose.yaml = compose.yaml
 	EndProjectSection
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GymLogAI.TgBot", "GymLogAI.TgBot\GymLogAI.TgBot.csproj", "{BAF381C4-F522-4A59-B86D-3B9D3DA3D6AD}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GymLogAI.Core", "GymLogAI.Core\GymLogAI.Core.csproj", "{B8D6F354-28CF-4432-8C09-04CBA164D68D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GymLogAI.Application", "GymLogAI.Application\GymLogAI.Application.csproj", "{DA9C34CA-7C7E-491F-8B56-AE0DA8BF88FB}"
+EndProject
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 EndProject
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 EndGlobal

README.md

@@ -0,0 +1,51 @@
+# GymLogAI
+
+GymLogAI is a minimal multi-project skeleton for importing workout messages, parsing them into structured training history, and generating workout recommendations.
+
+## Architecture
+
+- `GymLogAI.Core`: domain entities, enums, and primitive abstractions like `IClock` and `IIdGenerator`
+- `GymLogAI.Application`: repository contracts, AI contracts, DTOs, and use-case handlers
+- `GymLogAI.Persistence`: EF Core `AppDbContext`, PostgreSQL mappings, repositories, infrastructure services, and the first migration
+- `GymLogAI.AI`: OpenRouter-ready options and stubbed AI implementations for parsing, recommendations, and embeddings
+- `GymLogAI.API`: minimal API composition root with Swagger, import/recommend/history endpoints, and database migration on startup
+- `GymLogAI.TelegramBot`: Telegram long-polling host with `/start`, `/today`, and text message import
+- `GymLogAI.Worker`: background worker that polls pending telegram messages and parses them into workouts
+
+## Runtime Flow
+
+1. API or Telegram bot imports a raw Telegram message into `telegram_messages` with `Pending` status.
+2. Worker polls pending messages and runs `ParseTelegramMessageHandler`.
+3. Parsed workouts are stored in `workouts`, `workout_exercises`, and `exercise_sets`.
+4. API and Telegram bot can request workout recommendations from the application layer.
+
+## Key Endpoints
+
+- `POST /api/messages/import`
+- `POST /api/workouts/recommend`
+- `GET /api/workouts/history?userId=<guid>`
+- Swagger UI: `/swagger`
+
+## Database
+
+- Provider: PostgreSQL
+- Migration project: `GymLogAI.Persistence`
+- Initial migration is included in `GymLogAI.Persistence/Migrations`
+- `Exercise` includes an `Embedding` field stored as nullable `real[]`
+
+## Run
+
+```bash
+dotnet build
+dotnet run --project GymLogAI.API/
+dotnet run --project GymLogAI.TelegramBot/
+dotnet run --project GymLogAI.Worker/
+docker compose -f compose.yaml up --build
+```
+
+## Configuration
+
+- Connection string: `ConnectionStrings:Postgres`
+- Telegram bot token: `TelegramBot:BotToken`
+- OpenRouter settings: `OpenRouter:*`
+- Worker polling settings: `Worker:BatchSize`, `Worker:PollingIntervalSeconds`

compose.yaml

@@ -1,7 +1,51 @@
-services:
+services:
+  postgres:
+    image: postgres:17
+    environment:
+      POSTGRES_DB: gymlogai
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
   gymlogai.api:
     image: gymlogai.api
     build:
       context: .
       dockerfile: GymLogAI.API/Dockerfile
+    depends_on:
+      - postgres
+    environment:
+      ASPNETCORE_ENVIRONMENT: Development
+      ConnectionStrings__Postgres: Host=postgres;Port=5432;Database=gymlogai;Username=postgres;Password=postgres
+    ports:
+      - "5202:8080"
+      - "7225:8081"
 
+  gymlogai.telegrambot:
+    image: gymlogai.telegrambot
+    build:
+      context: .
+      dockerfile: GymLogAI.TelegramBot/Dockerfile
+    depends_on:
+      - postgres
+    environment:
+      DOTNET_ENVIRONMENT: Development
+      ConnectionStrings__Postgres: Host=postgres;Port=5432;Database=gymlogai;Username=postgres;Password=postgres
+      TelegramBot__BotToken: ""
+
+  gymlogai.worker:
+    image: gymlogai.worker
+    build:
+      context: .
+      dockerfile: GymLogAI.Worker/Dockerfile
+    depends_on:
+      - postgres
+    environment:
+      DOTNET_ENVIRONMENT: Development
+      ConnectionStrings__Postgres: Host=postgres;Port=5432;Database=gymlogai;Username=postgres;Password=postgres
+
+volumes:
+  postgres_data: