279 lines
10 KiB
C#
279 lines
10 KiB
C#
using System.Data.SQLite;
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using System.IO;
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using System.Globalization;
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using System.Diagnostics;
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using DualScreenDemo;
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namespace DBObj
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{
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public class SongListManager
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{
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private static SongListManager _instance;
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public List<SongData> AllSongs { get; private set; }
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public static Dictionary<string, List<SongData>> NewSongLists { get; private set; }
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public static Dictionary<string, List<SongData>> HotSongLists { get; private set; }
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public List<SongData> FavoriteSongs { get; private set; }
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//public const int SongsPerPage = 9;
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public bool IsUserLoggedIn { get; set; }
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public string UserPhoneNumber { get; set; }
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public SongListManager()
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{
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AllSongs = new List<SongData>();
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NewSongLists = new Dictionary<string, List<SongData>>();
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HotSongLists = new Dictionary<string, List<SongData>>();
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FavoriteSongs = new List<SongData>();
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// 尝试更新数据库，但无论结果如何都继续运行
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//TryUpdateDatabase();
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// 继续使用可用的数据库（可能是更新后的或原本的本地数据库）
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//InitializeDatabase();
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//LoadSongs();
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//InitializeNewSongLists();
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//InitializeHotSongLists();
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}
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/*
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private bool TryUpdateDatabase()
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{
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try
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{
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// 1. 检查是否能连接到 SVR01
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if (!Directory.Exists(@"\\SVR01\SuperstarB"))
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{
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Console.WriteLine("未連接到SVR使用本地DB");
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return true; // 继续使用本地数据库
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}
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// 2. 比较本地和服务器文件
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string localDbPath = Path.Combine(Application.StartupPath,"db" ,"KSongDatabase.db");
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string serverDbPath = @"\\SVR01\SuperstarB\KSongDatabase.db";
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if (!File.Exists(localDbPath))
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{
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Console.WriteLine("本地無db");
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}
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else
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{
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FileInfo localFile = new FileInfo(localDbPath);
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FileInfo serverFile = new FileInfo(serverDbPath);
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if (serverFile.LastWriteTime <= localFile.LastWriteTime)
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{
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Console.WriteLine("歌單已是最新");
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return true;
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}
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}
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// 3. 需要更新时，复制新文件
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Process copyProcess = new Process();
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copyProcess.StartInfo.FileName = "cmd.exe";
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copyProcess.StartInfo.Arguments = "/C copy /Y \\\\SVR01\\SuperstarB\\KSongDatabase.db \\db\\KSongDatabase.db";
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copyProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
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copyProcess.StartInfo.CreateNoWindow = true;
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copyProcess.Start();
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copyProcess.WaitForExit();
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if (copyProcess.ExitCode == 0)
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{
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Console.WriteLine("歌單更新成功");
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}
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else
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{
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Console.WriteLine("歌單複製失敗，使用本地歌單");
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}
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return true;
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}
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catch (Exception ex)
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{
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Console.WriteLine($"更新歌單失敗：{ex.Message}");
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return true; // 出错时继续使用本地数据库
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}
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}
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*/
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public static SongListManager Instance
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{
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get
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{
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if (_instance == null)
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{
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_instance = new SongListManager();
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}
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return _instance;
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}
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}
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public List<SongData> GetSongsByArtist(string artistName)
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{
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return AllSongs.Where(song => song.ArtistA == artistName || song.ArtistB == artistName).ToList();
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}
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public void InitializeDatabase()
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{
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string databaseFileName = "KSongDatabase.db";
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string databasePath = Path.Combine(Application.StartupPath, "db", databaseFileName);
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string connectionString = String.Format("Data Source={0};Version=3;", databasePath);
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using (var connection = new SQLiteConnection(connectionString))
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{
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try
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{
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connection.Open();
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string createTableSql = @"
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CREATE TABLE IF NOT EXISTS FavoriteSongs (
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PhoneNumber TEXT NOT NULL,
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SongNumber TEXT NOT NULL,
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PRIMARY KEY (PhoneNumber, SongNumber)
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);";
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using (var command = new SQLiteCommand(createTableSql, connection))
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{
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command.ExecuteNonQuery();
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}
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connection.Close();
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}
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catch (Exception ex)
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{
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Console.WriteLine("Failed to initialize SQLite database: " + ex.Message);
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}
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}
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}
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public void AddNewUser(string phoneNumber)
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{
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string databaseFileName = "KSongDatabase.db";
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string databasePath = Path.Combine(Application.StartupPath, "db", databaseFileName);
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string connectionString = String.Format("Data Source={0};Version=3;", databasePath);
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using (var connection = new SQLiteConnection(connectionString))
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{
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try
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{
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connection.Open();
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string checkTableSql = "SELECT name FROM sqlite_master WHERE type='table' AND name='FavoriteSongs';";
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using (var checkCommand = new SQLiteCommand(checkTableSql, connection))
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{
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var result = checkCommand.ExecuteScalar();
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if (result == null)
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{
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throw new Exception("Table 'FavoriteSongs' does not exist.");
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}
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}
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string sql = "INSERT INTO FavoriteSongs (PhoneNumber, SongNumber) VALUES (@PhoneNumber, @SongNumber)";
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using (var command = new SQLiteCommand(sql, connection))
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{
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command.Parameters.AddWithValue("@PhoneNumber", phoneNumber);
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command.Parameters.AddWithValue("@SongNumber", "000000");
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command.ExecuteNonQuery();
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}
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connection.Close();
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}
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catch (Exception ex)
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{
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Console.WriteLine("Failed to add new user to SQLite database: " + ex.Message);
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}
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}
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}
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public void AddToFavorite(string songNumber)
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{
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if (!IsUserLoggedIn || string.IsNullOrEmpty(UserPhoneNumber))
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{
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Console.WriteLine("User is not logged in.");
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return;
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}
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string databaseFileName = "KSongDatabase.db";
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string databasePath = Path.Combine(Application.StartupPath, "db", databaseFileName);
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string connectionString = String.Format("Data Source={0};Version=3;", databasePath);
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using (var connection = new SQLiteConnection(connectionString))
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{
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try
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{
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connection.Open();
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string checkSql = "SELECT COUNT(*) FROM FavoriteSongs WHERE PhoneNumber = @PhoneNumber AND SongNumber = @SongNumber";
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using (var checkCommand = new SQLiteCommand(checkSql, connection))
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{
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checkCommand.Parameters.AddWithValue("@PhoneNumber", UserPhoneNumber);
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checkCommand.Parameters.AddWithValue("@SongNumber", songNumber);
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long count = (long)checkCommand.ExecuteScalar();
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if (count > 0)
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{
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Console.WriteLine(String.Format("Song {0} is already in favorites.", songNumber));
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return;
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}
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}
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string sql = "INSERT INTO FavoriteSongs (PhoneNumber, SongNumber) VALUES (@PhoneNumber, @SongNumber)";
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using (var command = new SQLiteCommand(sql, connection))
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{
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command.Parameters.AddWithValue("@PhoneNumber", UserPhoneNumber);
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command.Parameters.AddWithValue("@SongNumber", songNumber);
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command.ExecuteNonQuery();
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}
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connection.Close();
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var song = AllSongs.FirstOrDefault(s => s.SongNumber == songNumber);
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if (song != null)
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{
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FavoriteSongs.Add(song);
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Console.WriteLine(String.Format("Added song {0} to favorites.", songNumber));
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}
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else
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{
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Console.WriteLine(String.Format("Song {0} not found in AllSongs.", songNumber));
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine("Failed to add song to favorites: " + ex.Message);
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}
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}
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}
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public List<SongData> SearchSongsBySinger(string keyword)
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{
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var keywordLower = keyword.ToLower();
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return AllSongs.Where(song => song.ArtistA.ToLower().Contains(keywordLower)
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|| song.ArtistB.ToLower().Contains(keywordLower))
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.ToList();
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}
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public List<SongData> SearchSongsByName(string keyword)
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{
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var keywordLower = keyword.ToLower();
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return AllSongs.Where(song => song.Song.ToLower().Contains(keywordLower)).ToList();
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}
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public SongData SearchSongByNumber(string songNumber)
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{
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foreach (var song in AllSongs)
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{
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if (song.SongNumber == songNumber)
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{
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return song;
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}
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}
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return null;
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}
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}
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} |