add new sharing function

MediaBrowser.Server.Implementations/Social/SharingManager.cs

@@ -0,0 +1,88 @@
+using MediaBrowser.Common.Extensions;
+using MediaBrowser.Controller;
+using MediaBrowser.Controller.Configuration;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Social;
+using MediaBrowser.Model.Social;
+using System;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.Social
+{
+    public class SharingManager : ISharingManager
+    {
+        private readonly SharingRepository _repository;
+        private readonly IServerConfigurationManager _config;
+        private readonly ILibraryManager _libraryManager;
+        private readonly IServerApplicationHost _appHost;
+
+        public SharingManager(SharingRepository repository, IServerConfigurationManager config, ILibraryManager libraryManager, IServerApplicationHost appHost)
+        {
+            _repository = repository;
+            _config = config;
+            _libraryManager = libraryManager;
+            _appHost = appHost;
+        }
+
+        public async Task<SocialShareInfo> CreateShare(string itemId, string userId)
+        {
+            if (string.IsNullOrWhiteSpace(itemId))
+            {
+                throw new ArgumentNullException("itemId");
+            }
+            if (string.IsNullOrWhiteSpace(userId))
+            {
+                throw new ArgumentNullException("userId");
+            }
+
+            var item = _libraryManager.GetItemById(itemId);
+
+            if (item == null)
+            {
+                throw new ResourceNotFoundException();
+            }
+
+            var externalUrl = _appHost.GetSystemInfo().WanAddress;
+
+            if (string.IsNullOrWhiteSpace(externalUrl))
+            {
+                throw new InvalidOperationException("No external server address is currently available.");
+            }
+
+            var info = new SocialShareInfo
+            {
+                Id = Guid.NewGuid().ToString("N"),
+                ExpirationDate = DateTime.UtcNow.AddDays(_config.Configuration.SharingExpirationDays),
+                ItemId = itemId,
+                UserId = userId,
+                Overview = item.Overview,
+                Name = GetTitle(item)
+            };
+
+            info.ImageUrl = externalUrl + "/Social/Shares/Public/" + info.Id + "/Image";
+            info.ImageUrl = externalUrl + "/web/shared.html?id=" + info.Id;
+
+            await _repository.CreateShare(info).ConfigureAwait(false);
+
+            return GetShareInfo(info.Id);
+        }
+
+        private string GetTitle(BaseItem item)
+        {
+            return item.Name;
+        }
+
+        public SocialShareInfo GetShareInfo(string id)
+        {
+            var info = _repository.GetShareInfo(id);
+
+            return info;
+        }
+
+        public Task DeleteShare(string id)
+        {
+            return _repository.DeleteShare(id);
+        }
+    }
+}

MediaBrowser.Server.Implementations/Social/SharingRepository.cs

@@ -0,0 +1,184 @@
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Social;
+using MediaBrowser.Server.Implementations.Persistence;
+using System;
+using System.Data;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.Social
+{
+    public class SharingRepository : BaseSqliteRepository
+    {
+        private IDbConnection _connection;
+        private IDbCommand _saveShareCommand;
+        private readonly IApplicationPaths _appPaths;
+
+        public SharingRepository(ILogManager logManager, IApplicationPaths appPaths)
+            : base(logManager)
+        {
+            _appPaths = appPaths;
+        }
+
+        /// <summary>
+        /// Opens the connection to the database
+        /// </summary>
+        /// <returns>Task.</returns>
+        public async Task Initialize()
+        {
+            var dbFile = Path.Combine(_appPaths.DataPath, "shares.db");
+
+            _connection = await SqliteExtensions.ConnectToDb(dbFile, Logger).ConfigureAwait(false);
+
+            string[] queries = {
+
+                                "create table if not exists Shares (Id GUID, ItemId TEXT, UserId TEXT, ExpirationDate DateTime, PRIMARY KEY (Id))",
+                                "create index if not exists idx_Shares on Shares(Id)",
+
+                                //pragmas
+                                "pragma temp_store = memory",
+
+                                "pragma shrink_memory"
+                               };
+
+            _connection.RunQueries(queries, Logger);
+
+            PrepareStatements();
+        }
+
+        /// <summary>
+        /// Prepares the statements.
+        /// </summary>
+        private void PrepareStatements()
+        {
+            _saveShareCommand = _connection.CreateCommand();
+            _saveShareCommand.CommandText = "replace into Shares (Id, ItemId, UserId, ExpirationDate) values (@Id, @ItemId, @UserId, @ExpirationDate)";
+
+            _saveShareCommand.Parameters.Add(_saveShareCommand, "@Id");
+            _saveShareCommand.Parameters.Add(_saveShareCommand, "@ItemId");
+            _saveShareCommand.Parameters.Add(_saveShareCommand, "@UserId");
+            _saveShareCommand.Parameters.Add(_saveShareCommand, "@ExpirationDate");
+        }
+
+        public async Task CreateShare(SocialShareInfo info)
+        {
+            if (info == null)
+            {
+                throw new ArgumentNullException("info");
+            }
+            if (string.IsNullOrWhiteSpace(info.Id))
+            {
+                throw new ArgumentNullException("info.Id");
+            }
+
+            var cancellationToken = CancellationToken.None;
+
+            cancellationToken.ThrowIfCancellationRequested();
+
+            await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
+
+            IDbTransaction transaction = null;
+
+            try
+            {
+                transaction = _connection.BeginTransaction();
+
+                _saveShareCommand.GetParameter(0).Value = new Guid(info.Id);
+                _saveShareCommand.GetParameter(1).Value = info.ItemId;
+                _saveShareCommand.GetParameter(2).Value = info.UserId;
+                _saveShareCommand.GetParameter(3).Value = info.ExpirationDate;
+
+                _saveShareCommand.Transaction = transaction;
+
+                _saveShareCommand.ExecuteNonQuery();
+
+                transaction.Commit();
+            }
+            catch (OperationCanceledException)
+            {
+                if (transaction != null)
+                {
+                    transaction.Rollback();
+                }
+
+                throw;
+            }
+            catch (Exception e)
+            {
+                Logger.ErrorException("Failed to save share:", e);
+
+                if (transaction != null)
+                {
+                    transaction.Rollback();
+                }
+
+                throw;
+            }
+            finally
+            {
+                if (transaction != null)
+                {
+                    transaction.Dispose();
+                }
+
+                WriteLock.Release();
+            }
+        }
+
+        public SocialShareInfo GetShareInfo(string id)
+        {
+            if (string.IsNullOrWhiteSpace(id))
+            {
+                throw new ArgumentNullException("id");
+            }
+
+            var cmd = _connection.CreateCommand();
+            cmd.CommandText = "select Id, ItemId, UserId, ExpirationDate from Shares where id = @id";
+
+            cmd.Parameters.Add(cmd, "@id", DbType.Guid).Value = new Guid(id);
+
+            using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
+            {
+                if (reader.Read())
+                {
+                    return GetSocialShareInfo(reader);
+                }
+            }
+
+            return null;
+        }
+
+        private SocialShareInfo GetSocialShareInfo(IDataReader reader)
+        {
+            var info = new SocialShareInfo();
+
+            info.Id = reader.GetGuid(0).ToString("N");
+            info.ItemId = reader.GetString(1);
+            info.UserId = reader.GetString(2);
+            info.ExpirationDate = reader.GetDateTime(3).ToUniversalTime();
+
+            return info;
+        }
+
+        public async Task DeleteShare(string id)
+        {
+            
+        }
+
+        protected override void CloseConnection()
+        {
+            if (_connection != null)
+            {
+                if (_connection.IsOpen())
+                {
+                    _connection.Close();
+                }
+
+                _connection.Dispose();
+                _connection = null;
+            }
+        }
+    }
+}