package middleware

import (
	"FileRelay/internal/config"
	"FileRelay/internal/model"
	"net/http"
	"sync"
	"time"

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

var (
	pickupFailures = make(map[string]int)
	failureMutex   sync.Mutex
)

func PickupRateLimit() gin.HandlerFunc {
	return func(c *gin.Context) {
		ip := c.ClientIP()
		code := c.Param("pickup_code")
		key := ip + ":" + code

		failureMutex.Lock()
		count, exists := pickupFailures[key]
		failureMutex.Unlock()

		if exists && count >= config.GlobalConfig.Security.PickupFailLimit {
			c.JSON(http.StatusTooManyRequests, model.ErrorResponse(http.StatusTooManyRequests, "Too many failed attempts. Please try again later."))
			c.Abort()
			return
		}

		c.Next()
	}
}

func RecordPickupFailure(ip, code string) {
	key := ip + ":" + code
	failureMutex.Lock()
	pickupFailures[key]++

	// 设置 1 小时后清除记录 (简单实现)
	go func() {
		time.Sleep(1 * time.Hour)
		failureMutex.Lock()
		delete(pickupFailures, key)
		failureMutex.Unlock()
	}()

	failureMutex.Unlock()
}