// -----------------------------------------------------------------------------
// SourcesPlugin.cs
// Sprint: SPRINT_20260114_SOURCES_SETUP
// Task: 12.1 - Sources Doctor Plugin
// Description: Doctor plugin providing advisory source connectivity diagnostics
// -----------------------------------------------------------------------------

using Microsoft.Extensions.DependencyInjection;
using StellaOps.Concelier.Core.Sources;
using StellaOps.Doctor.Models;
using StellaOps.Doctor.Plugins;
using StellaOps.Doctor.Plugins.Sources.Checks;

namespace StellaOps.Doctor.Plugins.Sources;

/// <summary>
/// Doctor plugin for advisory data source diagnostics.
/// Provides connectivity checks for all configured CVE/advisory data sources.
/// </summary>
public sealed class SourcesPlugin : IDoctorPlugin
{
    /// <inheritdoc />
    public string PluginId => "stellaops.doctor.sources";

    /// <inheritdoc />
    public string DisplayName => "Advisory Sources";

    /// <inheritdoc />
    public DoctorCategory Category => DoctorCategory.Sources;

    /// <inheritdoc />
    public Version Version => new(1, 0, 0);

    /// <inheritdoc />
    public Version MinEngineVersion => new(1, 0, 0);

    /// <inheritdoc />
    public bool IsAvailable(IServiceProvider services)
    {
        // Plugin is available if ISourceRegistry is registered
        return services.GetService<ISourceRegistry>() is not null;
    }

    /// <inheritdoc />
    public IReadOnlyList<IDoctorCheck> GetChecks(DoctorPluginContext context)
    {
        var registry = context.Services.GetService<ISourceRegistry>();
        if (registry is null)
        {
            return [];
        }

        var checks = new List<IDoctorCheck>
        {
            // Overall source mode configuration check
            new SourceModeConfiguredCheck(),

            // Mirror server checks
            new MirrorServerAuthCheck(),
            new MirrorServerRateLimitCheck()
        };

        // Generate dynamic checks for each registered source
        foreach (var source in registry.GetAllSources())
        {
            checks.Add(new SourceConnectivityCheck(source.Id, source.DisplayName));
        }

        return checks;
    }

    /// <inheritdoc />
    public Task InitializeAsync(DoctorPluginContext context, CancellationToken ct)
    {
        // No initialization required
        return Task.CompletedTask;
    }
}