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using System;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Database.Implementations;
using Jellyfin.Server.ServerSetupApp;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Server.Migrations.Routines;
/// <summary>
/// Migration to fix dates saved in the database to always be UTC.
/// </summary>
[JellyfinMigration("2025-06-20T18:00:00", nameof(FixDates))]
public class FixDates : IAsyncMigrationRoutine
{
private const int PageSize = 5000;
private readonly ILogger _logger;
private readonly IDbContextFactory<JellyfinDbContext> _dbProvider;
/// <summary>
/// Initializes a new instance of the <see cref="FixDates"/> class.
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="startupLogger">The startup logger for Startup UI integration.</param>
/// <param name="dbProvider">Instance of the <see cref="IDbContextFactory{JellyfinDbContext}"/> interface.</param>
public FixDates(
ILogger<FixDates> logger,
IStartupLogger<FixDates> startupLogger,
IDbContextFactory<JellyfinDbContext> dbProvider)
{
_logger = startupLogger.With(logger);
_dbProvider = dbProvider;
}
/// <inheritdoc />
public async Task PerformAsync(CancellationToken cancellationToken)
{
if (!TimeZoneInfo.Local.Equals(TimeZoneInfo.Utc))
{
using var context = await _dbProvider.CreateDbContextAsync(cancellationToken).ConfigureAwait(false);
var sw = Stopwatch.StartNew();
await FixBaseItemsAsync(context, sw, cancellationToken).ConfigureAwait(false);
sw.Reset();
await FixChaptersAsync(context, sw, cancellationToken).ConfigureAwait(false);
sw.Reset();
await FixBaseItemImageInfos(context, sw, cancellationToken).ConfigureAwait(false);
}
}
private async Task FixBaseItemsAsync(JellyfinDbContext context, Stopwatch sw, CancellationToken cancellationToken)
{
int itemCount = 0;
var baseQuery = context.BaseItems.OrderBy(e => e.Id);
var records = baseQuery.Count();
_logger.LogInformation("Fixing dates for {Count} BaseItems.", records);
sw.Start();
await foreach (var result in context.BaseItems.OrderBy(e => e.Id)
.WithPartitionProgress(
(partition) =>
_logger.LogInformation(
"Processing BaseItems batch {BatchNumber} ({ProcessedSoFar}/{TotalRecords}) - Time: {ElapsedTime}",
partition + 1,
Math.Min((partition + 1) * PageSize, records),
records,
sw.Elapsed))
.PartitionEagerAsync(PageSize, cancellationToken)
.WithCancellation(cancellationToken)
.ConfigureAwait(false))
{
result.DateCreated = ToUniversalTime(result.DateCreated);
result.DateLastMediaAdded = ToUniversalTime(result.DateLastMediaAdded);
result.DateLastRefreshed = ToUniversalTime(result.DateLastRefreshed);
result.DateLastSaved = ToUniversalTime(result.DateLastSaved);
result.DateModified = ToUniversalTime(result.DateModified);
itemCount++;
}
var saveCount = await context.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
_logger.LogInformation("BaseItems: Processed {ItemCount} items, saved {SaveCount} changes in {ElapsedTime}", itemCount, saveCount, sw.Elapsed);
}
private async Task FixChaptersAsync(JellyfinDbContext context, Stopwatch sw, CancellationToken cancellationToken)
{
int itemCount = 0;
var baseQuery = context.Chapters;
var records = baseQuery.Count();
_logger.LogInformation("Fixing dates for {Count} Chapters.", records);
sw.Start();
await foreach (var result in context.Chapters.OrderBy(e => e.ItemId)
.WithPartitionProgress(
(partition) =>
_logger.LogInformation(
"Processing Chapter batch {BatchNumber} ({ProcessedSoFar}/{TotalRecords}) - Time: {ElapsedTime}",
partition + 1,
Math.Min((partition + 1) * PageSize, records),
records,
sw.Elapsed))
.PartitionEagerAsync(PageSize, cancellationToken)
.WithCancellation(cancellationToken)
.ConfigureAwait(false))
{
result.ImageDateModified = ToUniversalTime(result.ImageDateModified, true);
itemCount++;
}
var saveCount = await context.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
_logger.LogInformation("Chapters: Processed {ItemCount} items, saved {SaveCount} changes in {ElapsedTime}", itemCount, saveCount, sw.Elapsed);
}
private async Task FixBaseItemImageInfos(JellyfinDbContext context, Stopwatch sw, CancellationToken cancellationToken)
{
int itemCount = 0;
var baseQuery = context.BaseItemImageInfos;
var records = baseQuery.Count();
_logger.LogInformation("Fixing dates for {Count} BaseItemImageInfos.", records);
sw.Start();
await foreach (var result in context.BaseItemImageInfos.OrderBy(e => e.Id)
.WithPartitionProgress(
(partition) =>
_logger.LogInformation(
"Processing BaseItemImageInfos batch {BatchNumber} ({ProcessedSoFar}/{TotalRecords}) - Time: {ElapsedTime}",
partition + 1,
Math.Min((partition + 1) * PageSize, records),
records,
sw.Elapsed))
.PartitionEagerAsync(PageSize, cancellationToken)
.WithCancellation(cancellationToken)
.ConfigureAwait(false))
{
result.DateModified = ToUniversalTime(result.DateModified);
itemCount++;
}
var saveCount = await context.SaveChangesAsync(cancellationToken).ConfigureAwait(false);
_logger.LogInformation("BaseItemImageInfos: Processed {ItemCount} items, saved {SaveCount} changes in {ElapsedTime}", itemCount, saveCount, sw.Elapsed);
}
private DateTime? ToUniversalTime(DateTime? dateTime, bool isUTC = false)
{
if (dateTime is null)
{
return null;
}
if (dateTime.Value.Year == 1 && dateTime.Value.Month == 1 && dateTime.Value.Day == 1)
{
return null;
}
if (dateTime.Value.Kind == DateTimeKind.Utc || isUTC)
{
return dateTime.Value;
}
return dateTime.Value.ToUniversalTime();
}
}
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