repo creation with initial code after cloning public repo
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using System;
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using System.Buffers;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Jellyfin.Database.Implementations;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Globalization;
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using MediaBrowser.Model.Tasks;
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using Microsoft.EntityFrameworkCore;
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namespace Emby.Server.Implementations.ScheduledTasks.Tasks;
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/// <summary>
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/// Class PeopleValidationTask.
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/// </summary>
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public class PeopleValidationTask : IScheduledTask, IConfigurableScheduledTask
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{
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private readonly ILibraryManager _libraryManager;
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private readonly ILocalizationManager _localization;
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private readonly IDbContextFactory<JellyfinDbContext> _dbContextFactory;
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/// <summary>
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/// Initializes a new instance of the <see cref="PeopleValidationTask" /> class.
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/// </summary>
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/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
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/// <param name="localization">Instance of the <see cref="ILocalizationManager"/> interface.</param>
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/// <param name="dbContextFactory">Instance of the <see cref="IDbContextFactory{TContext}"/> interface.</param>
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public PeopleValidationTask(ILibraryManager libraryManager, ILocalizationManager localization, IDbContextFactory<JellyfinDbContext> dbContextFactory)
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{
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_libraryManager = libraryManager;
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_localization = localization;
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_dbContextFactory = dbContextFactory;
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}
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/// <inheritdoc />
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public string Name => _localization.GetLocalizedString("TaskRefreshPeople");
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/// <inheritdoc />
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public string Description => _localization.GetLocalizedString("TaskRefreshPeopleDescription");
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/// <inheritdoc />
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public string Category => _localization.GetLocalizedString("TasksLibraryCategory");
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/// <inheritdoc />
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public string Key => "RefreshPeople";
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/// <inheritdoc />
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public bool IsHidden => false;
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/// <inheritdoc />
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public bool IsEnabled => true;
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/// <inheritdoc />
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public bool IsLogged => true;
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/// <summary>
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/// Creates the triggers that define when the task will run.
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/// </summary>
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/// <returns>An <see cref="IEnumerable{TaskTriggerInfo}"/> containing the default trigger infos for this task.</returns>
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public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
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{
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yield return new TaskTriggerInfo
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{
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Type = TaskTriggerInfoType.IntervalTrigger,
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IntervalTicks = TimeSpan.FromDays(7).Ticks
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};
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}
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/// <inheritdoc />
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public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
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{
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IProgress<double> subProgress = new Progress<double>((val) => progress.Report(val / 2));
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await _libraryManager.ValidatePeopleAsync(subProgress, cancellationToken).ConfigureAwait(false);
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subProgress = new Progress<double>((val) => progress.Report((val / 2) + 50));
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var context = await _dbContextFactory.CreateDbContextAsync(cancellationToken).ConfigureAwait(false);
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await using (context.ConfigureAwait(false))
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{
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var dupQuery = context.Peoples
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.GroupBy(e => new { e.Name, e.PersonType })
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.Where(e => e.Count() > 1)
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.Select(e => e.Select(f => f.Id).ToArray());
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var total = dupQuery.Count();
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const int PartitionSize = 100;
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var iterator = 0;
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int itemCounter;
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var buffer = ArrayPool<Guid[]>.Shared.Rent(PartitionSize)!;
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try
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{
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do
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{
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itemCounter = 0;
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await foreach (var item in dupQuery
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.Take(PartitionSize)
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.AsAsyncEnumerable()
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.WithCancellation(cancellationToken)
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.ConfigureAwait(false))
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{
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buffer[itemCounter++] = item;
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}
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for (int i = 0; i < itemCounter; i++)
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{
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var item = buffer[i];
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var reference = item[0];
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var dups = item[1..];
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await context.PeopleBaseItemMap.WhereOneOrMany(dups, e => e.PeopleId)
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.ExecuteUpdateAsync(e => e.SetProperty(f => f.PeopleId, reference), cancellationToken)
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.ConfigureAwait(false);
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await context.Peoples.Where(e => dups.Contains(e.Id)).ExecuteDeleteAsync(cancellationToken).ConfigureAwait(false);
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subProgress.Report(100f / total * ((iterator * PartitionSize) + i));
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}
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iterator++;
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} while (itemCounter == PartitionSize && !cancellationToken.IsCancellationRequested);
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}
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finally
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{
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ArrayPool<Guid[]>.Shared.Return(buffer);
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}
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subProgress.Report(100);
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}
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}
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}
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