feat: Implement initial full-stack application structure including frontend pages, components, hooks, API integration, and backend services for account pooling and management.

backend/internal/api/http.go

@@ -0,0 +1,54 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"codex-pool/internal/config"
+)
+
+// Result 统一 API 响应
+type Result struct {
+	Code    int         `json:"code"`
+	Message string      `json:"message,omitempty"`
+	Data    interface{} `json:"data,omitempty"`
+}
+
+// JSON 发送 JSON 响应
+func JSON(w http.ResponseWriter, code int, data interface{}) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	json.NewEncoder(w).Encode(data)
+}
+
+// Success 发送成功响应
+func Success(w http.ResponseWriter, data interface{}) {
+	JSON(w, http.StatusOK, Result{Code: 0, Data: data})
+}
+
+// Error 发送错误响应
+func Error(w http.ResponseWriter, httpCode int, message string) {
+	JSON(w, httpCode, Result{Code: -1, Message: message})
+}
+
+// CORS 跨域中间件
+func CORS(next http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		origin := "*"
+		if config.Global != nil && config.Global.CorsOrigin != "" {
+			origin = config.Global.CorsOrigin
+		}
+
+		w.Header().Set("Access-Control-Allow-Origin", origin)
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization, X-Api-Key")
+		w.Header().Set("Access-Control-Max-Age", "86400")
+
+		if r.Method == "OPTIONS" {
+			w.WriteHeader(http.StatusNoContent)
+			return
+		}
+
+		next(w, r)
+	}
+}