初始版本

2025-12-31 04:06:10 +08:00
parent 57cfd16e7b
commit 83ad246708
16 changed files with 363 additions and 965 deletions
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading.Tasks;
+using SQLite;
+using TodoList.Models;
+
+namespace TodoList.Services
+{
+    public class SqliteDataService : IDataService
+    {
+        private readonly SQLiteAsyncConnection _database;
+
+        public SqliteDataService()
+        {
+            var appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
+            var folder = Path.Combine(appData, "TodoListApp");
+            Directory.CreateDirectory(folder);
+            var databasePath = Path.Combine(folder, "TodoList.sqlite");
+
+            _database = new SQLiteAsyncConnection(databasePath);
+            _database.CreateTableAsync<TodoItem>().Wait();
+        }
+
+        public async Task<List<TodoItem>> LoadTasksAsync()
+        {
+            return await _database.Table<TodoItem>().ToListAsync();
+        }
+
+        public async Task SaveTaskAsync(TodoItem task)
+        {
+            await _database.InsertOrReplaceAsync(task);
+        }
+
+        public async Task SaveAllAsync(List<TodoItem> tasks)
+        {
+            await _database.RunInTransactionAsync(tran =>
+            {
+                foreach (var task in tasks)
+                {
+                    tran.InsertOrReplace(task);
+                }
+            });
+        }
+
+        public async Task DeleteTaskAsync(string id)
+        {
+            await _database.DeleteAsync<TodoItem>(id);
+        }
+    }
+}