chore: import upstream snapshot with attribution

internal/controller/lang_controller.go

@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package controller
+
+import (
+	"encoding/json"
+
+	"github.com/apache/answer/internal/base/handler"
+	"github.com/apache/answer/internal/base/translator"
+	"github.com/apache/answer/internal/service/siteinfo_common"
+	"github.com/gin-gonic/gin"
+	"github.com/segmentfault/pacman/i18n"
+)
+
+type LangController struct {
+	translator      i18n.Translator
+	siteInfoService siteinfo_common.SiteInfoCommonService
+}
+
+// NewLangController new language controller.
+func NewLangController(tr i18n.Translator, siteInfoService siteinfo_common.SiteInfoCommonService) *LangController {
+	return &LangController{translator: tr, siteInfoService: siteInfoService}
+}
+
+// GetLangMapping get language config mapping
+// @Summary get language config mapping
+// @Description get language config mapping
+// @Tags Lang
+// @Param Accept-Language header string true "Accept-Language"
+// @Produce json
+// @Success 200 {object} handler.RespBody{}
+// @Router /answer/api/v1/language/config [get]
+func (u *LangController) GetLangMapping(ctx *gin.Context) {
+	data, _ := u.translator.Dump(handler.GetLangByCtx(ctx))
+	var resp map[string]any
+	_ = json.Unmarshal(data, &resp)
+	handler.HandleResponse(ctx, nil, resp)
+}
+
+// GetAdminLangOptions Get language options
+// @Summary Get language options
+// @Description Get language options
+// @Security ApiKeyAuth
+// @Tags Lang
+// @Produce json
+// @Success 200 {object} handler.RespBody{}
+// @Router /answer/admin/api/language/options [get]
+func (u *LangController) GetAdminLangOptions(ctx *gin.Context) {
+	handler.HandleResponse(ctx, nil, translator.LanguageOptions)
+}
+
+// GetUserLangOptions Get language options
+// @Summary Get language options
+// @Description Get language options
+// @Tags Lang
+// @Produce json
+// @Success 200 {object} handler.RespBody{}
+// @Router /answer/api/v1/language/options [get]
+func (u *LangController) GetUserLangOptions(ctx *gin.Context) {
+	siteInterfaceResp, err := u.siteInfoService.GetSiteInterface(ctx)
+	if err != nil {
+		handler.HandleResponse(ctx, err, nil)
+		return
+	}
+
+	options := translator.LanguageOptions
+	if len(siteInterfaceResp.Language) > 0 {
+		defaultOption := []*translator.LangOption{
+			{Label: translator.DefaultLangOption, Value: translator.DefaultLangOption},
+		}
+		options = append(defaultOption, options...)
+	}
+	handler.HandleResponse(ctx, nil, options)
+}