jellyfin/Emby.Server.Implementations/Devices/DeviceRepository.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Devices;
using MediaBrowser.Model.Devices;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Session;
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namespace Emby.Server.Implementations.Devices
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{
public class DeviceRepository : IDeviceRepository
{
private readonly object _syncLock = new object();
private readonly IApplicationPaths _appPaths;
private readonly IJsonSerializer _json;
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private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
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private Dictionary<string, DeviceInfo> _devices;
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public DeviceRepository(IApplicationPaths appPaths, IJsonSerializer json, ILogger logger, IFileSystem fileSystem)
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{
_appPaths = appPaths;
_json = json;
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_logger = logger;
_fileSystem = fileSystem;
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}
private string GetDevicesPath()
{
return Path.Combine(_appPaths.DataPath, "devices");
}
private string GetDevicePath(string id)
{
return Path.Combine(GetDevicesPath(), id.GetMD5().ToString("N"));
}
public Task SaveDevice(DeviceInfo device)
{
var path = Path.Combine(GetDevicePath(device.Id), "device.json");
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(path));
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lock (_syncLock)
{
_json.SerializeToFile(device, path);
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_devices[device.Id] = device;
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}
return Task.FromResult(true);
}
public Task SaveCapabilities(string reportedId, ClientCapabilities capabilities)
{
var device = GetDevice(reportedId);
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if (device == null)
{
throw new ArgumentException("No device has been registed with id " + reportedId);
}
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device.Capabilities = capabilities;
SaveDevice(device);
return Task.FromResult(true);
}
public ClientCapabilities GetCapabilities(string reportedId)
{
var device = GetDevice(reportedId);
return device == null ? null : device.Capabilities;
}
public DeviceInfo GetDevice(string id)
{
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if (string.IsNullOrWhiteSpace(id))
{
throw new ArgumentNullException("id");
}
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return GetDevices()
.FirstOrDefault(i => string.Equals(i.Id, id, StringComparison.OrdinalIgnoreCase));
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}
public IEnumerable<DeviceInfo> GetDevices()
{
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lock (_syncLock)
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{
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if (_devices == null)
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{
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_devices = new Dictionary<string, DeviceInfo>(StringComparer.OrdinalIgnoreCase);
var devices = LoadDevices().ToList();
foreach (var device in devices)
{
_devices[device.Id] = device;
}
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}
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return _devices.Values.ToList();
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}
}
private IEnumerable<DeviceInfo> LoadDevices()
{
var path = GetDevicesPath();
try
{
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return _fileSystem
.GetFilePaths(path, true)
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.Where(i => string.Equals(Path.GetFileName(i), "device.json", StringComparison.OrdinalIgnoreCase))
.ToList()
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.Select(i =>
{
try
{
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return _json.DeserializeFromFile<DeviceInfo>(i);
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}
catch (Exception ex)
{
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_logger.ErrorException("Error reading {0}", ex, i);
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return null;
}
})
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.Where(i => i != null);
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}
catch (IOException)
{
return new List<DeviceInfo>();
}
}
public Task DeleteDevice(string id)
{
var path = GetDevicePath(id);
lock (_syncLock)
{
try
{
_fileSystem.DeleteDirectory(path, true);
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}
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catch (IOException)
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{
}
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_devices = null;
}
return Task.FromResult(true);
}
public ContentUploadHistory GetCameraUploadHistory(string deviceId)
{
var path = Path.Combine(GetDevicePath(deviceId), "camerauploads.json");
lock (_syncLock)
{
try
{
return _json.DeserializeFromFile<ContentUploadHistory>(path);
}
catch (IOException)
{
return new ContentUploadHistory
{
DeviceId = deviceId
};
}
}
}
public void AddCameraUpload(string deviceId, LocalFileInfo file)
{
var path = Path.Combine(GetDevicePath(deviceId), "camerauploads.json");
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(path));
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lock (_syncLock)
{
ContentUploadHistory history;
try
{
history = _json.DeserializeFromFile<ContentUploadHistory>(path);
}
catch (IOException)
{
history = new ContentUploadHistory
{
DeviceId = deviceId
};
}
history.DeviceId = deviceId;
history.FilesUploaded.Add(file);
_json.SerializeToFile(history, path);
}
}
}
}