@using LazyBear.MCP.Services.Logging
@inject InMemoryLogSink LogSink

@implements IDisposable

<Rows>
    <Markup Content=" " />

    @* Фильтр по модулю *@
    <Columns>
        <Markup Content="Filter: " />
        <Select TItem="string"
                Options="@_filterOptions"
                Value="@_selectedFilter"
                ValueChanged="@OnFilterChanged"
                FocusOrder="10" />
    </Columns>

    <Markup Content=" " />

    @{
        var entries = GetFilteredEntries();
    }

    @if (entries.Count == 0)
    {
        <Markup Content="[grey]No log entries yet...[/]" />
    }
    else
    {
        @* Показываем последние 20 строк с прокруткой *@
        <ViewHeightScrollable LinesToRender="20"
                              ScrollOffset="@_scrollOffset"
                              ScrollOffsetChanged="@(v => { _scrollOffset = v; })" >
            <Rows>
                @foreach (var entry in entries)
                {
                    var levelColor = entry.Level switch
                    {
                        LogLevel.Error or LogLevel.Critical => Spectre.Console.Color.Red,
                        LogLevel.Warning => Spectre.Console.Color.Yellow,
                        LogLevel.Information => Spectre.Console.Color.White,
                        _ => Spectre.Console.Color.Grey
                    };

                    var levelTag = entry.Level switch
                    {
                        LogLevel.Error => "ERR",
                        LogLevel.Critical => "CRT",
                        LogLevel.Warning => "WRN",
                        LogLevel.Information => "INF",
                        LogLevel.Debug => "DBG",
                        _ => "TRC"
                    };

                    var time = entry.Timestamp.ToString("HH:mm:ss");
                    var cat = entry.ShortCategory.Length > 18
                        ? entry.ShortCategory[..18]
                        : entry.ShortCategory.PadRight(18);
                    var msg = entry.Message.Length > 80
                        ? entry.Message[..80] + "..."
                        : entry.Message;

                    <Columns>
                        <Markup Content="@($"[grey]{time}[/]")" />
                        <Markup Content="@($" {levelTag} ")" Foreground="@levelColor" />
                        <Markup Content="@($"[grey]{cat}[/]")" />
                        <Markup Content="@($" {msg}")" />
                    </Columns>
                }
            </Rows>
        </ViewHeightScrollable>
    }
</Rows>

@code {
    private string _selectedFilter = "All";
    private int _scrollOffset = 0;

    private string[] _filterOptions = ["All", "Jira", "Kubernetes", "Confluence", "MCP", "System"];

    private static readonly Dictionary<string, string?> FilterPrefixes = new()
    {
        ["All"] = null,
        ["Jira"] = "LazyBear.MCP.Services.Jira",
        ["Kubernetes"] = "LazyBear.MCP.Services.Kubernetes",
        ["Confluence"] = "LazyBear.MCP.Services.Confluence",
        ["MCP"] = "ModelContextProtocol",
        ["System"] = "Microsoft"
    };

    private IReadOnlyList<LogEntry> GetFilteredEntries()
    {
        FilterPrefixes.TryGetValue(_selectedFilter, out var prefix);
        return LogSink.GetEntries(prefix);
    }

    private void OnFilterChanged(string value)
    {
        _selectedFilter = value;
        _scrollOffset = 0;
        StateHasChanged();
    }

    protected override void OnInitialized()
    {
        LogSink.OnLog += HandleNewLog;
    }

    private void HandleNewLog(LogEntry _)
    {
        InvokeAsync(StateHasChanged);
    }

    public void Dispose()
    {
        LogSink.OnLog -= HandleNewLog;
    }
}