chore: 首次簽入 Thinkyu ASP.NET 專案

- 加入 Visual Studio / ASP.NET .gitignore - 排除建置輸出、IDE 設定、NuGet packages、大型 MSI 安裝檔
2026-09-10 09:42:37 +08:00
commit 577060bc78
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+using Newtonsoft.Json;
+using System;
+using System.IO;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+using 報到系統客戶端.Models;
+
+namespace 報到系統客戶端.Services
+{
+    /// <summary>
+    /// API 服務基礎類別
+    /// 處理 HTTP 請求、Session cookie、錯誤處理
+    /// </summary>
+    public class ApiService
+    {
+        private static ApiService _instance;
+        private static readonly object _lockObject = new object();
+
+        private string _baseUrl;
+        private CookieContainer _cookieContainer;
+
+        // 用於儲存 cookie 的檔案路徑
+        private string _cookiePath;
+
+        public static JsonSerializerSettings jsonConvertSettings = new JsonSerializerSettings { DateTimeZoneHandling = DateTimeZoneHandling.Local };
+
+        public static object DeserializeObject(string value)
+        {
+            return JsonConvert.DeserializeObject(value, jsonConvertSettings);
+        }
+        public static T DeserializeObject<T>(string value)
+        {
+            return (T)JsonConvert.DeserializeObject(value, typeof(T), jsonConvertSettings);
+        }
+
+        /// <summary>
+        /// 取得單例實例
+        /// </summary>
+        public static ApiService Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    lock (_lockObject)
+                    {
+                        if (_instance == null)
+                        {
+                            _instance = new ApiService();
+                        }
+                    }
+                }
+                return _instance;
+            }
+        }
+
+        private ApiService()
+        {
+            // 從設定檔讀取基底 URL
+            _baseUrl = ConfigService.Instance.GetApiBaseUrl();
+            if (string.IsNullOrWhiteSpace(_baseUrl))
+            {
+                _baseUrl = "http://localhost:58792";
+            }
+
+            // 初始化 Cookie 容器
+            _cookieContainer = new CookieContainer();
+            _cookiePath = Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+                "報到系統客戶端",
+                "cookies.txt"
+            );
+
+            // 嘗試載入已儲存的 Cookie
+            LoadCookies();
+        }
+
+        /// <summary>
+        /// 設定基底 URL
+        /// </summary>
+        public string BaseUrl
+        {
+            set
+            {
+                _baseUrl = value;
+            }
+            get 
+            {
+                return _baseUrl;
+            }
+        }
+
+        /// <summary>
+        /// 執行 POST 請求
+        /// </summary>
+        public async Task<BaseResponse> PostAsync(string servicePath, string methodName, object parameters)
+        {
+            try
+            {
+                string url = $"{_baseUrl}{servicePath}/{methodName}";
+                
+                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
+                request.Method = "POST";
+                request.ContentType = "application/json; charset=utf-8";
+                request.CookieContainer = _cookieContainer;
+                request.KeepAlive = true;
+
+                // 序列化參數
+                string jsonData = JsonConvert.SerializeObject(parameters ?? new { });
+
+                // 寫入請求體
+                byte[] data = Encoding.UTF8.GetBytes(jsonData);
+                request.ContentLength = data.Length;
+
+                using (Stream requestStream = request.GetRequestStream())
+                {
+                    await requestStream.WriteAsync(data, 0, data.Length);
+                }
+
+                // 取得回應
+                using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
+                {
+                    // 更新 Cookie（用於 Session 管理）
+                    _cookieContainer.Add(response.ResponseUri, response.Cookies);
+                    SaveCookies();
+
+                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
+                    {
+                        string responseJson = await reader.ReadToEndAsync();
+                        
+                        // 解析回應
+                        dynamic result = DeserializeObject(responseJson);
+                        
+                        // ASP.NET Web Service 會將結果包在 "d" 屬性中
+                        if (result.d != null)
+                        {
+                            string dataJson = JsonConvert.SerializeObject(result.d);
+                            return DeserializeObject<BaseResponse>(dataJson);
+                        }
+                        else
+                        {
+                            return DeserializeObject<BaseResponse>(responseJson);
+                        }
+                    }
+                }
+            }
+            catch (WebException ex)
+            {
+                return new BaseResponse
+                {
+                    Success = false,
+                    Message = $"網路錯誤: {ex.Message}"
+                };
+            }
+            catch (Exception ex)
+            {
+                return new BaseResponse
+                {
+                    Success = false,
+                    Message = $"錯誤: {ex.Message}"
+                };
+            }
+        }
+
+        /// <summary>
+        /// 同步版本的 POST 請求（用於向後相容）
+        /// </summary>
+        public BaseResponse Post(string servicePath, string methodName, object parameters)
+        {
+            try
+            {
+                string url = $"{_baseUrl}{servicePath}/{methodName}";
+
+                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
+                request.Method = "POST";
+                request.ContentType = "application/json; charset=utf-8";
+                request.CookieContainer = _cookieContainer;
+                request.KeepAlive = true;
+
+                // 序列化參數
+                string jsonData = JsonConvert.SerializeObject(parameters ?? new { });
+
+                // 寫入請求體
+                byte[] data = Encoding.UTF8.GetBytes(jsonData);
+                request.ContentLength = data.Length;
+
+                using (Stream requestStream = request.GetRequestStream())
+                {
+                    requestStream.Write(data, 0, data.Length);
+                }
+
+                // 取得回應
+                using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
+                {
+                    // 更新 Cookie（用於 Session 管理）
+                    _cookieContainer.Add(response.ResponseUri, response.Cookies);
+                    SaveCookies();
+
+                    using (StreamReader reader = new StreamReader(response.GetResponseStream()))
+                    {
+                        string responseJson = reader.ReadToEnd();
+
+                        // 解析回應
+                        dynamic result = DeserializeObject(responseJson);
+
+                        // ASP.NET Web Service 會將結果包在 "d" 屬性中
+                        if (result.d != null)
+                        {
+                            string dataJson = JsonConvert.SerializeObject(result.d);
+                            return DeserializeObject<BaseResponse>(dataJson);
+                        }
+                        else
+                        {
+                            return DeserializeObject<BaseResponse>(responseJson);
+                        }
+                    }
+                }
+            }
+            catch (WebException ex)
+            {
+                return new BaseResponse
+                {
+                    Success = false,
+                    Message = $"網路錯誤: {ex.Message}"
+                };
+            }
+            catch (Exception ex)
+            {
+                return new BaseResponse
+                {
+                    Success = false,
+                    Message = $"錯誤: {ex.Message}"
+                };
+            }
+        }
+
+        /// <summary>
+        /// 清除所有 Session cookie
+        /// </summary>
+        public void ClearSession()
+        {
+            _cookieContainer = new CookieContainer();
+            DeleteCookies();
+        }
+
+        /// <summary>
+        /// 儲存 Cookie 到檔案
+        /// </summary>
+        private void SaveCookies()
+        {
+            try
+            {
+                string directory = Path.GetDirectoryName(_cookiePath);
+                if (!Directory.Exists(directory))
+                {
+                    Directory.CreateDirectory(directory);
+                }
+
+                using (StreamWriter sw = new StreamWriter(_cookiePath, false, Encoding.UTF8))
+                {
+                    foreach (Cookie cookie in _cookieContainer.GetCookies(new Uri(_baseUrl)))
+                    {
+                        sw.WriteLine($"{cookie.Name}={cookie.Value}");
+                    }
+                }
+            }
+            catch
+            {
+                // 忽略儲存錯誤
+            }
+        }
+
+        /// <summary>
+        /// 從檔案載入 Cookie
+        /// </summary>
+        private void LoadCookies()
+        {
+            try
+            {
+                if (File.Exists(_cookiePath))
+                {
+                    using (StreamReader sr = new StreamReader(_cookiePath, Encoding.UTF8))
+                    {
+                        string line;
+                        while ((line = sr.ReadLine()) != null)
+                        {
+                            if (string.IsNullOrWhiteSpace(line)) continue;
+
+                            string[] parts = line.Split(new[] { '=' }, 2);
+                            if (parts.Length == 2)
+                            {
+                                Cookie cookie = new Cookie(parts[0], parts[1])
+                                {
+                                    Path = "/",
+                                    HttpOnly = true
+                                };
+                                _cookieContainer.Add(new Uri(_baseUrl), cookie);
+                            }
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                // 忽略載入錯誤
+            }
+        }
+
+        /// <summary>
+        /// 刪除儲存的 Cookie 檔案
+        /// </summary>
+        private void DeleteCookies()
+        {
+            try
+            {
+                if (File.Exists(_cookiePath))
+                {
+                    File.Delete(_cookiePath);
+                }
+            }
+            catch
+            {
+                // 忽略刪除錯誤
+            }
+        }
+    }
+}