package controller

import (
	"github.com/gin-gonic/gin"
	"github.com/stripe/stripe-go/v76"
	"github.com/stripe/stripe-go/v76/webhook"
	"io"
	"log"
	"net/http"
	"one-api/common"
	"one-api/model"
	"strconv"
	"strings"
)

func StripeWebhook(c *gin.Context) {
	payload, err := io.ReadAll(c.Request.Body)
	if err != nil {
		log.Printf("解析Stripe Webhook参数失败: %v\n", err)
		c.AbortWithStatus(http.StatusServiceUnavailable)
		return
	}

	signature := c.GetHeader("Stripe-Signature")
	endpointSecret := common.StripeWebhookSecret
	event, err := webhook.ConstructEvent(payload, signature, endpointSecret)

	if err != nil {
		log.Printf("Stripe Webhook验签失败: %v\n", err)
		c.AbortWithStatus(http.StatusBadRequest)
		return
	}

	switch event.Type {
	case stripe.EventTypeCheckoutSessionCompleted:
		sessionCompleted(event)
	case stripe.EventTypeCheckoutSessionExpired:
		sessionExpired(event)
	default:
		log.Printf("不支持的Stripe Webhook事件类型: %s\n", event.Type)
	}

	c.Status(http.StatusOK)
}

func sessionCompleted(event stripe.Event) {
	customerId := event.GetObjectValue("customer")
	referenceId := event.GetObjectValue("client_reference_id")
	status := event.GetObjectValue("status")
	if "complete" != status {
		log.Println("错误的Stripe Checkout完成状态:", status, ",", referenceId)
		return
	}

	err := model.Recharge(referenceId, customerId)
	if err != nil {
		log.Println(err.Error(), referenceId)
		return
	}

	total, _ := strconv.ParseFloat(event.GetObjectValue("amount_total"), 64)
	currency := strings.ToUpper(event.GetObjectValue("currency"))
	log.Printf("收到款项：%s, %.2f(%s)", referenceId, total/100, currency)
}

func sessionExpired(event stripe.Event) {
	referenceId := event.GetObjectValue("client_reference_id")
	status := event.GetObjectValue("status")
	if "expired" != status {
		log.Println("错误的Stripe Checkout过期状态:", status, ",", referenceId)
		return
	}

	if "" == referenceId {
		log.Println("未提供支付单号")
		return
	}

	topUp := model.GetTopUpByTradeNo(referenceId)
	if topUp == nil {
		log.Println("充值订单不存在", referenceId)
		return
	}

	if topUp.Status != common.TopUpStatusPending {
		log.Println("充值订单状态错误", referenceId)
	}

	topUp.Status = common.TopUpStatusExpired
	err := topUp.Update()
	if err != nil {
		log.Println("过期充值订单失败", referenceId, ", err:", err.Error())
		return
	}

	log.Println("充值订单已过期", referenceId)
}