using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Plugin.RecentlyAddedGuard.Services;
using MediaBrowser.Model.Tasks;

namespace Jellyfin.Plugin.RecentlyAddedGuard.Tasks;

/// <summary>
/// Scheduled task "Ledger synchronisieren": registers unknown items, updates live items and prunes the ledger.
/// It never changes library items.
/// </summary>
public class SyncLedgerTask : IScheduledTask
{
    /// <summary>
    /// The task key.
    /// </summary>
    public const string TaskKey = "RecentlyAddedGuardSyncLedger";

    private readonly LedgerSynchronizer _synchronizer;

    /// <summary>
    /// Initializes a new instance of the <see cref="SyncLedgerTask"/> class.
    /// </summary>
    /// <param name="synchronizer">The synchronizer.</param>
    public SyncLedgerTask(LedgerSynchronizer synchronizer)
    {
        _synchronizer = synchronizer;
    }

    /// <inheritdoc />
    public string Name => "Ledger synchronisieren";

    /// <inheritdoc />
    public string Key => TaskKey;

    /// <inheritdoc />
    public string Description
        => "Gleicht das Ledger von Recently Added Guard mit der Bibliothek ab: registriert unbekannte Filme und Episoden, "
            + "trägt gelöschte Items aus und bereinigt abgelaufene Einträge. Ändert keine Items.";

    /// <inheritdoc />
    public string Category => "Recently Added Guard";

    /// <inheritdoc />
    public Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
        => _synchronizer.RunAsync(progress, cancellationToken);

    /// <inheritdoc />
    public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
    {
        yield return new TaskTriggerInfo
        {
            Type = TaskTriggerInfoType.DailyTrigger,
            TimeOfDayTicks = TimeSpan.FromHours(3).Ticks
        };
    }
}