// IHostedService adapter that hands every registered ISelfTestStep to
// Dalamud's ISelfTestRegistry once the host is up. Resolving the steps
// through DI keeps the plugin entry point free of static Plugin.X
// lookups - the DI container collects each step that was registered as
// IEnumerable<ISelfTestStep>.

using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Dalamud.Plugin.SelfTest;
using Dalamud.Plugin.Services;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace Anvil.Hosting;

internal sealed class SelfTestRegistrationHostedService : IHostedService
{
    private readonly ISelfTestRegistry _registry;
    private readonly IEnumerable<ISelfTestStep> _steps;
    private readonly ILogger<SelfTestRegistrationHostedService> _logger;

    public SelfTestRegistrationHostedService(
        ISelfTestRegistry registry,
        IEnumerable<ISelfTestStep> steps,
        ILogger<SelfTestRegistrationHostedService> logger
    )
    {
        _registry = registry;
        _steps = steps;
        _logger = logger;
    }

    public Task StartAsync(CancellationToken cancellationToken)
    {
        var stepList = new List<ISelfTestStep>(_steps);
        _registry.RegisterTestSteps(stepList);
        _logger.LogInformation("Anvil registered {Count} self-test step(s)", stepList.Count);
        return Task.CompletedTask;
    }

    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
}