feat: refactor application to use Gin framework, update routing and middleware handling

internal/http/middleware/auth.go

@@ -1,58 +1,58 @@
 package middleware
 
 import (
-	"net/http"
 	"strings"
+
+	"github.com/gin-gonic/gin"
 )
 
 // OpenAIAuth 中间件验证 OpenAI API 请求的令牌
-func OpenAIAuth(apiToken string, next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+func OpenAIAuth(apiToken string) gin.HandlerFunc {
+	return func(c *gin.Context) {
 		// 如果没有配置令牌，跳过验证
 		if apiToken == "" {
-			next.ServeHTTP(w, r)
+			c.Next()
 			return
 		}
 
 		// 获取请求头中的 Authorization
-		authHeader := r.Header.Get("Authorization")
+		authHeader := c.GetHeader("Authorization")
 		if authHeader == "" {
-			http.Error(w, "未提供授权令牌", http.StatusUnauthorized)
+			c.AbortWithStatusJSON(401, gin.H{"error": "未提供授权令牌"})
 			return
 		}
 
 		// 验证格式是否为 "Bearer {token}"
 		parts := strings.SplitN(authHeader, " ", 2)
 		if len(parts) != 2 || parts[0] != "Bearer" {
-			http.Error(w, "授权格式无效", http.StatusUnauthorized)
+			c.AbortWithStatusJSON(401, gin.H{"error": "授权格式无效"})
 			return
 		}
 
 		// 验证令牌是否正确
 		if parts[1] != apiToken {
-			http.Error(w, "令牌无效", http.StatusUnauthorized)
+			c.AbortWithStatusJSON(401, gin.H{"error": "令牌无效"})
 			return
 		}
 
 		// 令牌验证通过，继续处理请求
-		next.ServeHTTP(w, r)
-	})
+		c.Next()
+	}
 }
 
 // TTSAuth 是用于验证 TTS API 接口的中间件
-func TTSAuth(apiKey string, next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+func TTSAuth(apiKey string) gin.HandlerFunc {
+	return func(c *gin.Context) {
 		// 从查询参数中获取 api_key
-		queryKey := r.URL.Query().Get("api_key")
+		queryKey := c.Query("api_key")
 
 		// 如果 apiKey 配置为空字符串，表示不需要验证
 		if apiKey != "" && queryKey != apiKey {
-			w.WriteHeader(http.StatusUnauthorized)
-			w.Write([]byte("未授权访问: 无效的 API 密钥"))
+			c.AbortWithStatusJSON(401, gin.H{"error": "未授权访问: 无效的 API 密钥"})
 			return
 		}
 
 		// 验证通过，继续处理请求
-		next.ServeHTTP(w, r)
-	})
+		c.Next()
+	}
 }