package redpacket

import (
	"app/commons/constant"
	"app/commons/core"
	"app/commons/model/entity"
	"app/telegram"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/shopspring/decimal"
	"time"
)

// SendRedPacket 发红包
func (s *Server) SendRedPacket(ctx *gin.Context) {
	c := s.FromContext(ctx)

	type request struct {
		GroupID       string          `json:"groupId" binding:"required"`        // Telegram群组ID
		TotalAmount   decimal.Decimal `json:"totalAmount" binding:"required"`    // 红包总金额
		TotalCount    int             `json:"totalCount" binding:"required"`     // 红包个数
		PacketType    int             `json:"packetType" binding:"required"`     // 1=普通, 2=手气
		Symbol        string          `json:"symbol"`                            // 币种，默认VND
		BlessingWords string          `json:"blessingWords"`                     // 祝福语
	}

	req := new(request)
	if err := c.ShouldBindBodyWithJSON(req); err != nil {
		c.Fail(constant.ErrorParams)
		return
	}

	// 防刷控制（3秒内不能重复发）
	if !c.RepeatFilter(fmt.Sprintf("SendRedPacket:%d", c.UserId()), time.Second*3) {
		c.Fail(constant.ErrorFrequent)
		return
	}

	// 默认币种
	if req.Symbol == "" {
		req.Symbol = "VND"
	}

	// 创建红包
	packet, err := s.RedPacketService.CreateRedPacket(
		c.UserId(),
		req.GroupID,
		req.PacketType,
		req.TotalAmount,
		req.TotalCount,
		req.Symbol,
		req.BlessingWords,
	)

	if err != nil {
		c.Fail(err.Error())
		return
	}

	// 发送到 Telegram 群组
	go func() {
		// 异步发送到 Telegram
		// 使用系统发送者名称
		sendToTelegram(packet, "System")
	}()

	c.Resp(gin.H{
		"packetId": packet.Id,
		"packetNo": packet.PacketNo,
		"message":  "红包发送成功",
	})
}

// sendToTelegram 发送红包到Telegram群组
func sendToTelegram(packet *entity.TgRedPacket, senderName string) {
	if packet == nil {
		return
	}

	// 调用 telegram 包的发送函数
	telegram.SendRedPacketToGroup(
		packet.GroupId,
		packet.PacketNo,
		senderName,
		packet.TotalAmount.InexactFloat64(),
		packet.TotalCount,
		packet.PacketType,
		packet.BlessingWords,
	)

	core.Log.Infof("红包已发送到Telegram群组 - PacketNo: %s, GroupID: %s",
		packet.PacketNo, packet.GroupId)
}