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648 lines
22 KiB
C#
648 lines
22 KiB
C#
/**************************************************************************
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Subsonic Csharp
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Copyright (C) 2010 Ian Fijolek
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Net;
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using System.IO;
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using System.Xml;
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namespace SubsonicAPI
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{
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#region Classes
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public class SubsonicItem
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{
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public enum SubsonicItemType
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{
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Folder, Song, Artist, Library
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}
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public string name;
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public string id;
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public string lastModified;
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public string lastAccessed;
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public SubsonicItemType itemType;
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public SubsonicItem parent;
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private List<SubsonicItem> _children;
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public List<SubsonicItem> children
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{
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get
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{
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if (_children == null)
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{
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if (this.itemType == SubsonicItemType.Song)
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_children = null;
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else
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_children = Subsonic.GetItemChildren(this, "");
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}
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return _children;
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}
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set
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{
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_children = value;
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}
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}
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public SubsonicItem()
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{
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this.name = "";
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this.id = "";
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this.lastAccessed = DateTime.Now.ToString();
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}
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public SubsonicItem(string name, string id)
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{
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this.name = name;
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this.id = name;
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this.lastAccessed = DateTime.Now.ToString();
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}
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public SubsonicItem(string name, string id, SubsonicItemType itemType, SubsonicItem parent)
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{
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this.name = name;
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this.id = id;
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this.itemType = itemType;
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this.parent = parent;
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this.lastAccessed = DateTime.Now.ToString();
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}
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public override string ToString()
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{
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return name;
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}
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public SubsonicItem FindItemById(string id)
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{
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SubsonicItem foundItem = null;
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// If the current item is the item we are looking for, return it
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if (this.id == id)
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foundItem = this;
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// Otherwise, we check the children if they exist
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else if (_children != null)
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{
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foreach(SubsonicItem child in _children)
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{
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// If this child is the item we are looking for, return it
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if (child.id == id)
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{
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foundItem = child;
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break;
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}
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else
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{
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foundItem = child.FindItemById(id);
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if (foundItem != null)
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break;
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}
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}
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}
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return foundItem;
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}
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public SubsonicItem GetChildByName(string childName)
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{
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SubsonicItem theItem = null;
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if (_children != null)
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{
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theItem = _children.Find(
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delegate(SubsonicItem itm)
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{
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return itm.name == childName ;
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}
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);
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}
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return theItem;
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}
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}
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public class Song : SubsonicItem
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{
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public string artist;
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public string album;
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public string title;
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public Song()
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{
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this.artist = "";
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this.title = "";
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this.album = "";
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this.name = "";
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this.id = "";
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this.itemType = SubsonicItem.SubsonicItemType.Song;
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this.parent = null;
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this.lastAccessed = DateTime.Now.ToString();
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}
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public Song(string title,string artist, string album, string id)
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{
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this.artist = artist;
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this.title = title;
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this.album = album;
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this.name = title;
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this.id = id;
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this.itemType = SubsonicItem.SubsonicItemType.Song;
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this.parent = null;
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this.lastAccessed = DateTime.Now.ToString();
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}
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public Song(string title, string artist, string album, string id, SubsonicItem parent)
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{
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this.artist = artist;
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this.title = title;
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this.album = album;
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this.name = title;
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this.id = id;
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this.itemType = SubsonicItem.SubsonicItemType.Song;
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this.parent = parent;
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this.lastAccessed = DateTime.Now.ToString();
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}
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public Stream getStream()
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{
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return Subsonic.StreamSong(this.id);
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}
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public override string ToString()
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{
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return artist + " - " + title;
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}
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}
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#endregion Classes
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/// <summary>
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/// Open Source C# Implementation of the Subsonic API
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/// http://www.subsonic.org/pages/api.jsp
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/// </summary>
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public static class Subsonic
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{
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private static SubsonicItem _MyLibrary;
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/// <summary>
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/// Public Property that can be used for auto-retrieving children
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/// </summary>
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public static SubsonicItem MyLibrary
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{
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get
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{
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return _MyLibrary;
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}
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set
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{
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_MyLibrary = value;
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}
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}
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// Should be set from application layer when the application is loaded
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public static string appName;
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// Min version of the REST API implemented
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private static string apiVersion = "1.3.0";
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// Set with the login method
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static string server;
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static string authHeader;
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// Used for generating direct URLS
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static string encPass;
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static string username;
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/// <summary>
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/// Takes parameters for server, username and password to generate an auth header
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/// and Pings the server
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/// </summary>
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/// <param name="theServer"></param>
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/// <param name="user"></param>
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/// <param name="password"></param>
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/// <returns>Resulting XML (Future boolean)</returns>
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public static string LogIn(string theServer, string user, string password)
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{
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string result = "Nothing Happened";
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server = theServer;
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authHeader = user + ":" + password;
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authHeader = Convert.ToBase64String(Encoding.Default.GetBytes(authHeader));
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// Store user and encoded password for alternate authentication
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username = user;
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Byte[] passwordBytes = Encoding.Default.GetBytes(password);
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for (int i = 0; i < passwordBytes.Length; i++)
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encPass += passwordBytes[i].ToString("x2");
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Stream theStream = MakeGenericRequest("ping", null);
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StreamReader sr = new StreamReader(theStream);
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result = sr.ReadToEnd();
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/// TODO: Parse the result and determine if logged in or not
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_MyLibrary = new SubsonicItem("LibraryRoot", "-1", SubsonicItem.SubsonicItemType.Library, null);
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return result;
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}
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/// <summary>
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/// Uses the Auth Header for logged in user to make an HTTP request to the server
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/// with the given Subsonic API method and parameters
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/// </summary>
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/// <param name="method"></param>
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/// <param name="parameters"></param>
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/// <returns>Datastream of the server response</returns>
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public static Stream MakeGenericRequest(string method, Dictionary<string, string> parameters)
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{
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// Check to see if Logged In yet
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if (string.IsNullOrEmpty(authHeader))
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{
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// Throw a Not Logged In exception
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Exception e = new Exception("No Authorization header. Must Log In first");
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return null;
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}
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else
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{
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if (!method.EndsWith(".view"))
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method += ".view";
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string requestURL = BuildRequestURL(method, parameters);
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WebRequest theRequest = WebRequest.Create(requestURL);
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theRequest.Method = "GET";
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theRequest.Headers["Authorization"] = "Basic " + authHeader;
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WebResponse response = theRequest.GetResponse();
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Stream dataStream = response.GetResponseStream();
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return dataStream;
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}
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}
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/// <summary>
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/// Creates a URL for a request but does not make the actual request using set login credentials an dmethod and parameters
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/// </summary>
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/// <param name="method"></param>
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/// <param name="parameters"></param>
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/// <returns>Proper Subsonic API URL for a request</returns>
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public static string BuildRequestURL(string method, Dictionary<string, string> parameters)
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{
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string requestURL = "http://" + server + "/rest/" + method + "?v=" + apiVersion + "&c=" + appName;
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if (parameters != null)
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{
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foreach (KeyValuePair<string, string> parameter in parameters)
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{
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requestURL += "&" + parameter.Key + "=" + parameter.Value;
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}
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}
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return requestURL;
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}
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/// <summary>
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/// Creates a URL for a command with username and encoded pass in the URL
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/// </summary>
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/// <param name="method"></param>
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/// <param name="parameters"></param>
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/// <returns>URL for streaming a song or retrieving the results of a call</returns>
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public static string BuildDirectURL(string method, Dictionary<string, string> parameters)
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{
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string callURL = "http://" + server + "/rest/" + method + "?v=" + apiVersion + "&c=" + appName
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+ "&u=" + username + "&p=enc:" + encPass;
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if (parameters != null)
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{
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foreach (KeyValuePair<string, string> parameter in parameters)
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{
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callURL += "&" + parameter.Key + "=" + parameter.Value;
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}
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}
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return callURL;
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}
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/// <summary>
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/// Returns a list of SubsonicItems that fall inside the parent object
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/// </summary>
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/// <param name="parent">
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/// A <see cref="SubsonicItem"/>
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/// </param>
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/// <param name="ifModifiedSince">
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/// A <see cref="System.String"/>
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/// </param>
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/// <returns>
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/// A <see cref="List<SubsonicItem>"/>
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/// </returns>
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public static List<SubsonicItem> GetItemChildren(SubsonicItem parent, string ifModifiedSince)
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{
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Dictionary<string, string> parameters = new Dictionary<string, string>();
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// Generate the proper request for the parent type
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string requestType, musicFolderId;
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if (parent.itemType == SubsonicItem.SubsonicItemType.Library)
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{
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requestType = "getIndexes";
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if (parent.id != "-1")
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parameters.Add("musicFolderId", parent.id);
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}
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else
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{
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requestType = "getMusicDirectory";
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parameters.Add("id", parent.id);
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}
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// Load the parameters if provided
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if (!string.IsNullOrEmpty(ifModifiedSince))
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parameters.Add("ifModifiedSince", ifModifiedSince);
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// Make the request
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Stream theStream = MakeGenericRequest(requestType, parameters);
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// Read the response as a string
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StreamReader sr = new StreamReader(theStream);
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string result = sr.ReadToEnd();
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// Parse the resulting XML string into an XmlDocument
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XmlDocument myXML = new XmlDocument();
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myXML.LoadXml(result);
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List<SubsonicItem> children = new List<SubsonicItem>();
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// Parse the artist
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if (parent.itemType == SubsonicItem.SubsonicItemType.Library)
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{
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if (myXML.ChildNodes[1].Name == "subsonic-response")
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{
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if (myXML.ChildNodes[1].FirstChild.Name == "indexes")
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{
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for (int i = 0; i < myXML.ChildNodes[1].FirstChild.ChildNodes.Count; i++)
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{
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for (int j = 0; j < myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes.Count; j++)
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{
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string artist = myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes[j].Attributes["name"].Value;
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string id = myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes[j].Attributes["id"].Value;
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children.Add(new SubsonicItem(artist, id, SubsonicItem.SubsonicItemType.Folder, parent));
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}
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}
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}
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}
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}
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// Parse the directory
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else if (parent.itemType == SubsonicItem.SubsonicItemType.Folder)
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{
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if (myXML.ChildNodes[1].Name == "subsonic-response")
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{
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if (myXML.ChildNodes[1].FirstChild.Name == "directory")
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{
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for (int i = 0; i < myXML.ChildNodes[1].FirstChild.ChildNodes.Count; i++)
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{
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bool isDir = bool.Parse(myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["isDir"].Value);
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string title = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["title"].Value;
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string id = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["id"].Value;
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SubsonicItem theItem = new SubsonicItem(title, id, (isDir ? SubsonicItem.SubsonicItemType.Folder : SubsonicItem.SubsonicItemType.Song), parent);
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children.Add(theItem);
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}
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}
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}
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}
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return children;
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}
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/// <summary>
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/// Returns an indexed structure of all artists.
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/// </summary>
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/// <param name="parent">Required: No; If specified, only return artists in the music folder with the given ID.</param>
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/// <param name="ifModifiedSince">Required: No; If specified, only return a result if the artist collection has changed since the given time.</param>
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/// <returns>Dictionary, Key = Artist and Value = id</returns>
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public static List<SubsonicItem> GetIndexes(string musicFolderId, string ifModifiedSince)
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{
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// Load the parameters if provided
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Dictionary<string, string> parameters = new Dictionary<string, string>();
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if (!string.IsNullOrEmpty(musicFolderId))
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parameters.Add("musicFolderId", musicFolderId);
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if (!string.IsNullOrEmpty(ifModifiedSince))
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parameters.Add("ifModifiedSince", ifModifiedSince);
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// Make the request
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Stream theStream = MakeGenericRequest("getIndexes", parameters);
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// Read the response as a string
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StreamReader sr = new StreamReader(theStream);
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string result = sr.ReadToEnd();
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// Parse the resulting XML string into an XmlDocument
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XmlDocument myXML = new XmlDocument();
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myXML.LoadXml(result);
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// Parse the XML document into a List
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List<SubsonicItem> artists = new List<SubsonicItem>();
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if (myXML.ChildNodes[1].Name == "subsonic-response")
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{
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if (myXML.ChildNodes[1].FirstChild.Name == "indexes")
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{
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int i = 0;
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for (i = 0; i < myXML.ChildNodes[1].FirstChild.ChildNodes.Count; i++)
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{
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int j = 0;
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for (j = 0; j < myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes.Count; j++)
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{
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string artist = myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes[j].Attributes["name"].Value;
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string id = myXML.ChildNodes[1].FirstChild.ChildNodes[i].ChildNodes[j].Attributes["id"].Value;
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artists.Add(new SubsonicItem(artist, id));
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}
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}
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}
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}
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return artists;
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}
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public static List<SubsonicItem> GetIndexes(string musicFolderId)
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{
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return GetIndexes(musicFolderId, "");
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}
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public static List<SubsonicItem> GetIndexes()
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{
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return GetIndexes("", "");
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}
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/// <summary>
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/// Streams a given music file. (Renamed from request name "stream")
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/// </summary>
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/// <param name="id">Required: Yes; A string which uniquely identifies the file to stream.
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/// Obtained by calls to getMusicDirectory.</param>
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/// <param name="maxBitRate">Required: No; If specified, the server will attempt to
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/// limit the bitrate to this value, in kilobits per second. If set to zero, no limit
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/// is imposed. Legal values are: 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320. </param>
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/// <returns></returns>
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public static Stream StreamSong(string id, int? maxBitRate)
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{
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// Reades the id of the song and sets it as a parameter
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Dictionary<string, string> theParameters = new Dictionary<string,string>();
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theParameters.Add("id", id);
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if (maxBitRate.HasValue)
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theParameters.Add("maxBitRate", maxBitRate.ToString());
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// Makes the request
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Stream theStream = MakeGenericRequest("stream", theParameters);
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return theStream;
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}
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public static Stream StreamSong(string id)
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{
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return StreamSong(id, null);
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}
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/// <summary>
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/// Returns a listing of all files in a music directory. Typically used to get list of albums for an artist, or list of songs for an album.
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/// </summary>
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/// <param name="id">A string which uniquely identifies the music folder. Obtained by calls to getIndexes or getMusicDirectory.</param>
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/// <returns>MusicFolder object containing info for the specified directory</returns>
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public static List<SubsonicItem> GetMusicDirectory(string id)
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{
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Dictionary<string, string> theParameters = new Dictionary<string, string>();
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theParameters.Add("id", id);
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Stream theStream = MakeGenericRequest("getMusicDirectory", theParameters);
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StreamReader sr = new StreamReader(theStream);
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string result = sr.ReadToEnd();
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XmlDocument myXML = new XmlDocument();
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myXML.LoadXml(result);
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List<SubsonicItem> theContents = new List<SubsonicItem>();
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if (myXML.ChildNodes[1].Name == "subsonic-response")
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{
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if (myXML.ChildNodes[1].FirstChild.Name == "directory")
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{
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SubsonicItem theParent = new SubsonicItem();
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theParent.name = myXML.ChildNodes[1].FirstChild.Attributes["name"].Value;
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theParent.id = myXML.ChildNodes[1].FirstChild.Attributes["id"].Value;
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int i = 0;
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for (i = 0; i < myXML.ChildNodes[1].FirstChild.ChildNodes.Count; i++)
|
|
{
|
|
bool isDir = bool.Parse(myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["isDir"].Value);
|
|
string title = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["title"].Value;
|
|
string theId = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["id"].Value;
|
|
|
|
SubsonicItem theItem = new SubsonicItem(title, theId, (isDir ? SubsonicItem.SubsonicItemType.Folder : SubsonicItem.SubsonicItemType.Song), theParent);
|
|
theContents.Add(theItem);
|
|
}
|
|
}
|
|
}
|
|
|
|
return theContents;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns what is currently being played by all users. Takes no extra parameters.
|
|
/// </summary>
|
|
public static List<SubsonicItem> GetNowPlaying()
|
|
{
|
|
List<SubsonicItem> nowPlaying = new List<SubsonicItem>();
|
|
|
|
Dictionary<string, string> theParameters = new Dictionary<string, string>();
|
|
Stream theStream = MakeGenericRequest("getNowPlaying", theParameters);
|
|
StreamReader sr = new StreamReader(theStream);
|
|
string result = sr.ReadToEnd();
|
|
|
|
|
|
return nowPlaying;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Performs a search valid for the current version of the subsonic server
|
|
/// </summary>
|
|
/// <param name="query">The Term you want to search for</param>
|
|
/// <returns>A List of SubsonicItem objects</returns>
|
|
public static List<SubsonicItem> Search(string query)
|
|
{
|
|
Dictionary<string, string> parameters = new Dictionary<string, string>();
|
|
Version apiV = new Version(apiVersion);
|
|
Version Search2Min = new Version("1.4.0");
|
|
string request = "";
|
|
if (apiV >= Search2Min)
|
|
{
|
|
request = "search2";
|
|
parameters.Add("query", query);
|
|
}
|
|
else
|
|
{
|
|
request = "search";
|
|
parameters.Add("any", query);
|
|
}
|
|
|
|
// Make the request
|
|
Stream theStream = MakeGenericRequest(request, parameters);
|
|
// Read the response as a string
|
|
StreamReader sr = new StreamReader(theStream);
|
|
string result = sr.ReadToEnd();
|
|
|
|
// Parse the resulting XML string into an XmlDocument
|
|
XmlDocument myXML = new XmlDocument();
|
|
myXML.LoadXml(result);
|
|
|
|
List<SubsonicItem> searchResults = new List<SubsonicItem>();
|
|
|
|
// Parse the artist
|
|
if (myXML.ChildNodes[1].Name == "subsonic-response")
|
|
{
|
|
if (myXML.ChildNodes[1].FirstChild.Name == "searchResult")
|
|
{
|
|
for (int i = 0; i < myXML.ChildNodes[1].FirstChild.ChildNodes.Count; i++)
|
|
{
|
|
bool isDir = bool.Parse(myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["isDir"].Value);
|
|
string title = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["title"].Value;
|
|
string theId = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["id"].Value;
|
|
string artist = "";
|
|
string album = "";
|
|
|
|
if (!isDir)
|
|
{
|
|
artist = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["artist"].Value;
|
|
album = myXML.ChildNodes[1].FirstChild.ChildNodes[i].Attributes["album"].Value;
|
|
}
|
|
|
|
SubsonicItem theItem;
|
|
if (isDir)
|
|
theItem = new SubsonicItem(title, theId, SubsonicItem.SubsonicItemType.Folder, null);
|
|
else
|
|
theItem = new Song(title, artist, album, theId);
|
|
|
|
searchResults.Add(theItem);
|
|
}
|
|
}
|
|
}
|
|
|
|
return searchResults;
|
|
}
|
|
|
|
}
|
|
|
|
} |