feat: 重构项目以符合 Go 规范，添加 OpenAI 接口适配，优化长文本朗读功能（切割后合并）

internal/http/middleware/cors.go

@@ -0,0 +1,22 @@
+package middleware
+
+import "net/http"
+
+// CORS 处理跨域资源共享
+func CORS(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// 设置CORS响应头
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+
+		// 如果是预检请求，直接返回200
+		if r.Method == http.MethodOptions {
+			w.WriteHeader(http.StatusOK)
+			return
+		}
+
+		// 继续下一个处理器
+		next.ServeHTTP(w, r)
+	})
+}

internal/http/middleware/logger.go

@@ -0,0 +1,46 @@
+package middleware
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+// Logger 是一个HTTP中间件，记录请求的详细信息
+func Logger(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+
+		// 包装ResponseWriter以捕获状态码
+		wrapper := &responseWriterWrapper{
+			ResponseWriter: w,
+			statusCode:     http.StatusOK,
+		}
+
+		// 调用下一个处理器
+		next.ServeHTTP(wrapper, r)
+
+		// 记录请求信息
+		duration := time.Since(start)
+		log.Printf(
+			"[%s] %s %s %d %s",
+			r.Method,
+			r.RequestURI,
+			r.RemoteAddr,
+			wrapper.statusCode,
+			duration,
+		)
+	})
+}
+
+// responseWriterWrapper 包装http.ResponseWriter以捕获状态码
+type responseWriterWrapper struct {
+	http.ResponseWriter
+	statusCode int
+}
+
+// WriteHeader 捕获状态码
+func (w *responseWriterWrapper) WriteHeader(statusCode int) {
+	w.statusCode = statusCode
+	w.ResponseWriter.WriteHeader(statusCode)
+}