package logic

import (
	pbCommon "dcg/game/pb/common"
	pbMq "dcg/game/pb/mq"
	pbRoom "dcg/game/pb/room"
	"dcg/pkg/cmd"
)

type (
	// LiveGameLogic 直播游戏逻辑
	// 处理指令
	// 处理礼物
	LiveGameLogic struct {
		GameType         pbRoom.GameType           // 游戏类型
		CmdParser        *cmd.Parser               // 命令解析
		CmdHandlerMapper map[string]CMDHandlerFunc // 具体命令处理(同类型)
		GiftHandler      GiftHandlerFunc           // 礼物处理
	}
	CMDHandlerFunc  func(roomId int64, cmd string, user *pbCommon.PbUser)
	GiftHandlerFunc func(roomId int64, user *pbCommon.PbUser, gift *pbMq.MqGift)
)

func NewLiveGameLogic(gameType pbRoom.GameType, cmdParser *cmd.Parser) *LiveGameLogic {
	return &LiveGameLogic{
		GameType:         gameType,
		CmdParser:        cmdParser,
		CmdHandlerMapper: make(map[string]CMDHandlerFunc),
		GiftHandler:      nil,
	}
}

func (l *LiveGameLogic) RegisterCMDHandler(h CMDHandlerFunc, cmd string, alias ...string) {
	if _, ok := l.CmdHandlerMapper[cmd]; ok {
		return
	}
	l.CmdHandlerMapper[cmd] = h
	// alias
	for _, s := range alias {
		if _, ok := l.CmdHandlerMapper[s]; ok {
			continue
		}
		l.CmdHandlerMapper[s] = h
	}
}

func (l *LiveGameLogic) RegisterGiftHandler(h GiftHandlerFunc) {
	l.GiftHandler = h
}

func (l *LiveGameLogic) HandleDanmaku(user *pbCommon.PbUser, dm *pbMq.MqDanmaku) {
	cmdStruct := l.CmdParser.Parse(dm.Content)
	if cmdStruct.IsCMD {
		for _, c := range cmdStruct.Arr {
			go l.handleCMD(dm.LiveRoomId, c, user)
		}
	} else {
		room, err := GameLogic.RoomManager.RoomByLiveRoomId(dm.LiveRoomId)
		if err != nil {
			return
		}
		// 发送正常的非命令弹幕消息
		room.PushToLiveRoom(dm.LiveRoomId, "live.danmaku", &pbCommon.DanmakuMsg{
			User:    user,
			Content: dm.Content,
		})
	}
}

func (l *LiveGameLogic) handleCMD(roomId int64, cmd string, user *pbCommon.PbUser) {
	if h, ok := l.CmdHandlerMapper[cmd]; ok {
		h(roomId, cmd, user)
	}
}

func (l *LiveGameLogic) HandleGift(roomId int64, user *pbCommon.PbUser, gift *pbMq.MqGift) {
	if room, err := GameLogic.RoomManager.RoomByLiveRoomId(roomId); err == nil {
		// 发送通用礼物消息
		room.PushToLiveRoom(roomId, "live.gift", &pbCommon.GiftMsg{
			User:     user,
			GiftId:   gift.GiftId,
			Num:      gift.Num,
			GiftName: gift.GiftName,
			Price:    gift.Price,
			IsPaid:   gift.IsPaid,
		})
	}
	if l.GiftHandler == nil {
		return
	}
	l.GiftHandler(roomId, user, gift)
}