refactor: Move some of the dependency injection code to the Common Library.

src/ZonyLrcTools.Common/Infrastructure/Exceptions/ErrorCodeHelper.cs

@@ -0,0 +1,41 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace ZonyLrcTools.Common.Infrastructure.Exceptions
+{
+    /// <summary>
+    /// 错误码相关的帮助类。
+    /// </summary>
+    public static class ErrorCodeHelper
+    {
+        public static Dictionary<int, string> ErrorMessages { get; }
+
+        static ErrorCodeHelper()
+        {
+            ErrorMessages = new Dictionary<int, string>();
+        }
+
+        /// <summary>
+        /// 从 err_msg.json 文件加载错误信息。
+        /// </summary>
+        public static void LoadErrorMessage()
+        {
+            // 防止重复加载。
+            if (ErrorMessages.Count != 0)
+            {
+                return;
+            }
+
+            var jsonPath = Path.Combine(Directory.GetCurrentDirectory(), "Resources", "error_msg.json");
+            using var jsonReader = new JsonTextReader(File.OpenText(jsonPath));
+            var jsonObj = JObject.Load(jsonReader);
+
+            var errors = jsonObj.SelectTokens("$.Error.*");
+            var warnings = jsonObj.SelectTokens("$.Warning.*");
+            errors.Union(warnings).Select(m => m.Parent).OfType<JProperty>().ToList()
+                .ForEach(m => ErrorMessages.Add(int.Parse(m.Name), m.Value.Value<string>()));
+        }
+
+        public static string GetMessage(int errorCode) => ErrorMessages[errorCode];
+    }
+}