#pragma warning disable RS0030 // Do not use banned APIs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Database.Implementations;
using MediaBrowser.Model.Globalization;
using MediaBrowser.Model.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;

namespace Jellyfin.Plugin.MediaCleaner.ScheduledTasks;

/// <summary>
/// Task to clean up any detached userdata from the database.
/// </summary>
public class CleanupUserDataTask : IScheduledTask
{
    private readonly ILocalizationManager _localization;
    private readonly IDbContextFactory<JellyfinDbContext> _dbProvider;
    private readonly ILogger<CleanupUserDataTask> _logger;

    /// <summary>
    /// Initializes a new instance of the <see cref="CleanupUserDataTask"/> class.
    /// </summary>
    /// <param name="localization">The localisation Provider.</param>
    /// <param name="dbProvider">The DB context factory.</param>
    /// <param name="logger">A logger.</param>
    public CleanupUserDataTask(ILocalizationManager localization, IDbContextFactory<JellyfinDbContext> dbProvider, ILogger<CleanupUserDataTask> logger)
    {
        _localization = localization;
        _dbProvider = dbProvider;
        _logger = logger;
    }

    /// <inheritdoc />
    public string Name => _localization.GetLocalizedString("CleanupUserDataTask");

    public Guid PlaceholderId => new("00000000-0000-0000-0000-000000000001");

    /// <inheritdoc />
    public string Description => _localization.GetLocalizedString("CleanupUserDataTaskDescription");

    /// <inheritdoc />
    public string Category => _localization.GetLocalizedString("Media");

    /// <inheritdoc />
    public string Key => nameof(CleanupUserDataTask);

    /// <inheritdoc/>
    public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
    {
        var dbContext = await _dbProvider.CreateDbContextAsync(cancellationToken).ConfigureAwait(false);
        await using (dbContext.ConfigureAwait(false))
        {
            var detachedUserData = dbContext.UserData.Where(e => e.ItemId == PlaceholderId).ToList();
            _logger.LogInformation("There are {NoDetached} detached UserData entries.", detachedUserData.Count);
            foreach(var userData in detachedUserData)
            {
                if (userData.Item != null)
                {
                    _logger.LogInformation("Detached user data for: {UserDataName}", userData.Item.Name);
                }
                else
                {
                    _logger.LogInformation("Detached user data for: {UserDataName}", userData);
                }
            }
            _logger.LogInformation("Detached user data count: {Count}.", detachedUserData.Count);

            // await detachedUserData.ExecuteDeleteAsync(cancellationToken).ConfigureAwait(false);
        }
    }

    /// <inheritdoc/>
    public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
    {
        yield break;
    }
}