jellyfin/Emby.Server.Implementations/Data/SqliteDisplayPreferencesRepository.cs

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C#
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using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using SQLitePCL.pretty;
namespace Emby.Server.Implementations.Data
{
/// <summary>
/// Class SQLiteDisplayPreferencesRepository
/// </summary>
public class SqliteDisplayPreferencesRepository : BaseSqliteRepository, IDisplayPreferencesRepository
{
private readonly IMemoryStreamFactory _memoryStreamProvider;
public SqliteDisplayPreferencesRepository(ILogger logger, IJsonSerializer jsonSerializer, IApplicationPaths appPaths, IMemoryStreamFactory memoryStreamProvider)
: base(logger)
{
_jsonSerializer = jsonSerializer;
_memoryStreamProvider = memoryStreamProvider;
DbFilePath = Path.Combine(appPaths.DataPath, "displaypreferences.db");
}
/// <summary>
/// Gets the name of the repository
/// </summary>
/// <value>The name.</value>
public string Name
{
get
{
return "SQLite";
}
}
/// <summary>
/// The _json serializer
/// </summary>
private readonly IJsonSerializer _jsonSerializer;
/// <summary>
/// Opens the connection to the database
/// </summary>
/// <returns>Task.</returns>
public void Initialize()
{
using (var connection = CreateConnection())
{
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RunDefaultInitialization(connection);
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string[] queries = {
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"create table if not exists userdisplaypreferences (id GUID, userId GUID, client text, data BLOB)",
"create unique index if not exists userdisplaypreferencesindex on userdisplaypreferences (id, userId, client)"
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};
connection.RunQueries(queries);
}
}
/// <summary>
/// Save the display preferences associated with an item in the repo
/// </summary>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="userId">The user id.</param>
/// <param name="client">The client.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task SaveDisplayPreferences(DisplayPreferences displayPreferences, Guid userId, string client, CancellationToken cancellationToken)
{
if (displayPreferences == null)
{
throw new ArgumentNullException("displayPreferences");
}
if (string.IsNullOrWhiteSpace(displayPreferences.Id))
{
throw new ArgumentNullException("displayPreferences.Id");
}
cancellationToken.ThrowIfCancellationRequested();
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
connection.RunInTransaction(db =>
{
SaveDisplayPreferences(displayPreferences, userId, client, db);
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}, TransactionMode);
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}
}
}
private void SaveDisplayPreferences(DisplayPreferences displayPreferences, Guid userId, string client, IDatabaseConnection connection)
{
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var serialized = _jsonSerializer.SerializeToBytes(displayPreferences, _memoryStreamProvider);
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using (var statement = connection.PrepareStatement("replace into userdisplaypreferences (id, userid, client, data) values (@id, @userId, @client, @data)"))
{
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statement.TryBind("@id", displayPreferences.Id.ToGuidParamValue());
statement.TryBind("@userId", userId.ToGuidParamValue());
statement.TryBind("@client", client);
statement.TryBind("@data", serialized);
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statement.MoveNext();
}
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}
/// <summary>
/// Save all display preferences associated with a user in the repo
/// </summary>
/// <param name="displayPreferences">The display preferences.</param>
/// <param name="userId">The user id.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public async Task SaveAllDisplayPreferences(IEnumerable<DisplayPreferences> displayPreferences, Guid userId, CancellationToken cancellationToken)
{
if (displayPreferences == null)
{
throw new ArgumentNullException("displayPreferences");
}
cancellationToken.ThrowIfCancellationRequested();
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
connection.RunInTransaction(db =>
{
foreach (var displayPreference in displayPreferences)
{
SaveDisplayPreferences(displayPreference, userId, displayPreference.Client, db);
}
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}, TransactionMode);
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}
}
}
/// <summary>
/// Gets the display preferences.
/// </summary>
/// <param name="displayPreferencesId">The display preferences id.</param>
/// <param name="userId">The user id.</param>
/// <param name="client">The client.</param>
/// <returns>Task{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public DisplayPreferences GetDisplayPreferences(string displayPreferencesId, Guid userId, string client)
{
if (string.IsNullOrWhiteSpace(displayPreferencesId))
{
throw new ArgumentNullException("displayPreferencesId");
}
var guidId = displayPreferencesId.GetMD5();
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using (WriteLock.Read())
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{
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using (var connection = CreateConnection(true))
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{
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using (var statement = connection.PrepareStatement("select data from userdisplaypreferences where id = @id and userId=@userId and client=@client"))
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{
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statement.TryBind("@id", guidId.ToGuidParamValue());
statement.TryBind("@userId", userId.ToGuidParamValue());
statement.TryBind("@client", client);
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foreach (var row in statement.ExecuteQuery())
{
return Get(row);
}
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}
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return new DisplayPreferences
{
Id = guidId.ToString("N")
};
}
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}
}
/// <summary>
/// Gets all display preferences for the given user.
/// </summary>
/// <param name="userId">The user id.</param>
/// <returns>Task{DisplayPreferences}.</returns>
/// <exception cref="System.ArgumentNullException">item</exception>
public IEnumerable<DisplayPreferences> GetAllDisplayPreferences(Guid userId)
{
var list = new List<DisplayPreferences>();
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using (WriteLock.Read())
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{
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using (var connection = CreateConnection(true))
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{
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using (var statement = connection.PrepareStatement("select data from userdisplaypreferences where userId=@userId"))
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{
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statement.TryBind("@userId", userId.ToGuidParamValue());
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foreach (var row in statement.ExecuteQuery())
{
list.Add(Get(row));
}
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}
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}
}
return list;
}
private DisplayPreferences Get(IReadOnlyList<IResultSetValue> row)
{
using (var stream = _memoryStreamProvider.CreateNew(row[0].ToBlob()))
{
stream.Position = 0;
return _jsonSerializer.DeserializeFromStream<DisplayPreferences>(stream);
}
}
public Task SaveDisplayPreferences(DisplayPreferences displayPreferences, string userId, string client, CancellationToken cancellationToken)
{
return SaveDisplayPreferences(displayPreferences, new Guid(userId), client, cancellationToken);
}
public DisplayPreferences GetDisplayPreferences(string displayPreferencesId, string userId, string client)
{
return GetDisplayPreferences(displayPreferencesId, new Guid(userId), client);
}
}
}