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using System;
using System.Linq;
using System.Threading.Tasks;
using Jellyfin.Data.Entities;
using MediaBrowser.Model.Activity;
using MediaBrowser.Model.Events;
using MediaBrowser.Model.Querying;
namespace Jellyfin.Server.Implementations.Activity
{
/// <summary>
/// Manages the storage and retrieval of <see cref="ActivityLog"/> instances.
/// </summary>
public class ActivityManager : IActivityManager
{
private readonly JellyfinDbProvider _provider;
/// <summary>
/// Initializes a new instance of the <see cref="ActivityManager"/> class.
/// </summary>
/// <param name="provider">The Jellyfin database provider.</param>
public ActivityManager(JellyfinDbProvider provider)
{
_provider = provider;
}
/// <inheritdoc/>
public event EventHandler<GenericEventArgs<ActivityLogEntry>> EntryCreated;
/// <inheritdoc/>
public void Create(ActivityLog entry)
{
using var dbContext = _provider.CreateContext();
dbContext.ActivityLogs.Add(entry);
dbContext.SaveChanges();
EntryCreated?.Invoke(this, new GenericEventArgs<ActivityLogEntry>(ConvertToOldModel(entry)));
}
/// <inheritdoc/>
public async Task CreateAsync(ActivityLog entry)
{
using var dbContext = _provider.CreateContext();
await dbContext.ActivityLogs.AddAsync(entry);
await dbContext.SaveChangesAsync().ConfigureAwait(false);
EntryCreated?.Invoke(this, new GenericEventArgs<ActivityLogEntry>(ConvertToOldModel(entry)));
}
/// <inheritdoc/>
public QueryResult<ActivityLogEntry> GetPagedResult(
Func<IQueryable<ActivityLog>, IQueryable<ActivityLog>> func,
int? startIndex,
int? limit)
{
using var dbContext = _provider.CreateContext();
var query = func(dbContext.ActivityLogs.OrderByDescending(entry => entry.DateCreated));
if (startIndex.HasValue)
{
query = query.Skip(startIndex.Value);
}
if (limit.HasValue)
{
query = query.Take(limit.Value);
}
// This converts the objects from the new database model to the old for compatibility with the existing API.
var list = query.Select(ConvertToOldModel).ToList();
return new QueryResult<ActivityLogEntry>
{
Items = list,
TotalRecordCount = func(dbContext.ActivityLogs).Count()
};
}
/// <inheritdoc/>
public QueryResult<ActivityLogEntry> GetPagedResult(int? startIndex, int? limit)
{
return GetPagedResult(logs => logs, startIndex, limit);
}
private static ActivityLogEntry ConvertToOldModel(ActivityLog entry)
{
return new ActivityLogEntry
{
Id = entry.Id,
Name = entry.Name,
Overview = entry.Overview,
ShortOverview = entry.ShortOverview,
Type = entry.Type,
ItemId = entry.ItemId,
UserId = entry.UserId,
Date = entry.DateCreated,
Severity = entry.LogSeverity
};
}
}
}
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