package middleware

import (
	"log/slog"
	"net/http"
	"runtime/debug"

	"github.com/gin-gonic/gin"

	"github.com/kennethcheng/fuellog-api/pkg/apperror"
)

// Recover 捕获 handler 中的 panic,返回统一的 500 错误响应。
// 同时把堆栈写入日志,便于定位。
func Recover() gin.HandlerFunc {
	return func(c *gin.Context) {
		defer func() {
			if r := recover(); r != nil {
				slog.Error("panic recovered",
					"path", c.Request.URL.Path,
					"method", c.Request.Method,
					"panic", r,
					"stack", string(debug.Stack()),
				)
				c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{
					"code":    apperror.CodeInternal,
					"message": "服务器开了小差,请稍后再试",
				})
			}
		}()
		c.Next()
	}
}