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using MediaBrowser.Common.Progress;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Channels;
using MediaBrowser.Model.Logging;
using MoreLinq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Channels
{
public class ChannelPostScanTask : ILibraryPostScanTask
{
private readonly IChannelManager _channelManager;
private readonly IUserManager _userManager;
private readonly ILogger _logger;
public ChannelPostScanTask(IChannelManager channelManager, IUserManager userManager, ILogger logger)
{
_channelManager = channelManager;
_userManager = userManager;
_logger = logger;
}
public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
{
var users = _userManager.Users
.DistinctBy(ChannelDownloadScheduledTask.GetUserDistinctValue)
.Select(i => i.Id.ToString("N"))
.ToList();
var numComplete = 0;
foreach (var user in users)
{
double percentPerUser = 1;
percentPerUser /= users.Count;
var startingPercent = numComplete * percentPerUser * 100;
var innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(p => progress.Report(startingPercent + (percentPerUser * p)));
await DownloadContent(user, cancellationToken, innerProgress).ConfigureAwait(false);
numComplete++;
double percent = numComplete;
percent /= users.Count;
progress.Report(percent * 100);
}
progress.Report(100);
}
private async Task DownloadContent(string user, CancellationToken cancellationToken, IProgress<double> progress)
{
var channels = await _channelManager.GetChannelsInternal(new ChannelQuery
{
UserId = user
}, cancellationToken);
var numComplete = 0;
var numItems = channels.Items.Length;
foreach (var channel in channels.Items)
{
var channelId = channel.Id.ToString("N");
var features = _channelManager.GetChannelFeatures(channelId);
const int currentRefreshLevel = 1;
var maxRefreshLevel = features.AutoRefreshLevels ?? 1;
var innerProgress = new ActionableProgress<double>();
var startingNumberComplete = numComplete;
innerProgress.RegisterAction(p =>
{
double innerPercent = startingNumberComplete;
innerPercent += (p / 100);
innerPercent /= numItems;
progress.Report(innerPercent * 100);
});
try
{
await GetAllItems(user, channelId, null, currentRefreshLevel, maxRefreshLevel, innerProgress, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error getting channel content", ex);
}
numComplete++;
double percent = numComplete;
percent /= numItems;
progress.Report(percent * 100);
}
progress.Report(100);
}
private async Task GetAllItems(string user, string channelId, string folderId, int currentRefreshLevel, int maxRefreshLevel, IProgress<double> progress, CancellationToken cancellationToken)
{
var folderItems = new List<string>();
var innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(p => progress.Report(p / 2));
var result = await _channelManager.GetChannelItemsInternal(new ChannelItemQuery
{
ChannelId = channelId,
UserId = user,
FolderId = folderId
}, innerProgress, cancellationToken);
folderItems.AddRange(result.Items.Where(i => i.IsFolder).Select(i => i.Id.ToString("N")));
var totalRetrieved = result.Items.Length;
var totalCount = result.TotalRecordCount;
while (totalRetrieved < totalCount)
{
result = await _channelManager.GetChannelItemsInternal(new ChannelItemQuery
{
ChannelId = channelId,
UserId = user,
StartIndex = totalRetrieved,
FolderId = folderId
}, new Progress<double>(), cancellationToken);
folderItems.AddRange(result.Items.Where(i => i.IsFolder).Select(i => i.Id.ToString("N")));
totalRetrieved += result.Items.Length;
totalCount = result.TotalRecordCount;
}
progress.Report(50);
if (currentRefreshLevel < maxRefreshLevel)
{
var numComplete = 0;
var numItems = folderItems.Count;
foreach (var folder in folderItems)
{
try
{
innerProgress = new ActionableProgress<double>();
var startingNumberComplete = numComplete;
innerProgress.RegisterAction(p =>
{
double innerPercent = startingNumberComplete;
innerPercent += (p / 100);
innerPercent /= numItems;
progress.Report((innerPercent * 50) + 50);
});
await GetAllItems(user, channelId, folder, currentRefreshLevel + 1, maxRefreshLevel, innerProgress, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error getting channel content", ex);
}
numComplete++;
double percent = numComplete;
percent /= numItems;
progress.Report((percent * 50) + 50);
}
}
progress.Report(100);
}
}
}
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