// Package middleware 定义平台 API 自有的 HTTP 中间件。
package middleware

import (
	"time"

	"github.com/gin-contrib/cors"
	"github.com/gin-gonic/gin"
)

// Cors 允许平台前端跨域调用 API，包括状态更新使用的 PATCH 方法。
func Cors() gin.HandlerFunc {
	return cors.New(cors.Config{
		AllowOriginFunc: func(origin string) bool {
			return true // 允许所有域名
		},
		AllowMethods: []string{"GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"},
		AllowHeaders: []string{
			"Origin",
			"Content-Type",
			"Authorization",
			"X-Requested-With",
			"X-App-Id",
			"X-Doip-App-Id",
			"X-Lowcode-Mode",
			"X-Lowcode-Org",
			"Token",
		},
		ExposeHeaders:    []string{"Content-Length"},
		AllowCredentials: true, // 支持 credentials
		MaxAge:           12 * time.Hour,
	})
}