refactor: support i18n

internal/pkg/httpx/path.go

@@ -1,6 +1,7 @@
 package httpx
 
 import (
+	"cs-agent/internal/pkg/i18nx"
 	"net/http"
 	"strconv"
 
@@ -11,7 +12,7 @@ import (
 func GetPathInt64(ctx *gin.Context, name string) (int64, bool) {
 	value, err := strconv.ParseInt(ctx.Param(name), 10, 64)
 	if err != nil {
-		WriteHttpStatusJSON(ctx, http.StatusBadRequest, web.JsonErrorMsg("路径参数错误"))
+		WriteHttpStatusJSON(ctx, http.StatusBadRequest, web.JsonErrorMsg(i18nx.T(ctx, "error.path.invalid", nil)))
 		return 0, false
 	}
 	return value, true

internal/pkg/httpx/response.go

@@ -1,6 +1,7 @@
 package httpx
 
 import (
+	"cs-agent/internal/pkg/i18nx"
 	"net/http"
 
 	"github.com/gin-gonic/gin"
@@ -28,11 +29,19 @@ func PageData(results any, paging *sqls.Paging) any {
 }
 
 func WriteJSON(ctx *gin.Context, result any) {
-	ctx.JSON(http.StatusOK, buildJSONResult(result))
+	ctx.JSON(http.StatusOK, localizeJSONResult(ctx, buildJSONResult(result)))
 }
 
 func WriteHttpStatusJSON(ctx *gin.Context, statusCode int, result any) {
-	ctx.JSON(statusCode, buildJSONResult(result))
+	ctx.JSON(statusCode, localizeJSONResult(ctx, buildJSONResult(result)))
+}
+
+func localizeJSONResult(ctx *gin.Context, result *web.JsonResult) *web.JsonResult {
+	if result == nil || result.Success || result.Message == "" {
+		return result
+	}
+	result.Message = i18nx.TranslateKnownMessage(i18nx.Locale(ctx), result.Message)
+	return result
 }
 
 func buildJSONResult(result any) *web.JsonResult {

internal/pkg/httpx/response_test.go

@@ -1,6 +1,7 @@
 package httpx
 
 import (
+	"cs-agent/internal/pkg/i18nx"
 	"encoding/json"
 	"errors"
 	"net/http"
@@ -67,6 +68,22 @@ func TestWriteJSONWrapsCommonResultTypes(t *testing.T) {
 	}
 }
 
+func TestWriteJSONLocalizesKnownErrorMessages(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	ctx, recorder := testContext()
+	i18nx.SetLocale(ctx, i18nx.LocaleEnUS)
+
+	WriteJSON(ctx, web.JsonErrorMsg("会话不存在"))
+
+	var got web.JsonResult
+	if err := json.Unmarshal(recorder.Body.Bytes(), &got); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if got.Message != "Conversation not found." {
+		t.Fatalf("message = %q, want %q", got.Message, "Conversation not found.")
+	}
+}
+
 func TestWriteHttpStatusJSONUsesProvidedStatus(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	ctx, recorder := testContext()