package logic

import (
	"context"
	"fmt"
	"github.com/zeromicro/go-zero/core/logx"
	"sync"
	"time"
)

type websocketStatType string

const (
	TYPE_CUR_CONNECT_COUNT       websocketStatType = "TYPE_CUR_CONNECT_COUNT"       //ws连接数
	TYPE_CUR_COMBINE_IMAGE_COUNT websocketStatType = "TYPE_CUR_COMBINE_IMAGE_COUNT" //合图数
	TYPE_CUR_UNITY_HANDLE_COUNT  websocketStatType = "TYPE_CUR_UNITY_HANDLE_COUNT"  //unity处理数
)

type websocketStatItem struct {
	UserId           int64             `json:"user_id"`
	GuestId          int64             `json:"guest_id"`
	Type             websocketStatType `json:"type"`                //类型
	Value            int               `json:"value"`               //数值
	UnityRenderLogId int64             `json:"unity_render_log_id"` //unity渲染的日志id
}
type mapUserWsStatItem struct {
	CurCombineCount     int `json:"cur_combine_count"`      //当前合图数
	CurWsConnectCount   int `json:"cur_ws_connect_count"`   //当前连接数
	CurUnityHandleCount int `json:"cur_unity_handle_count"` //当前unity处理数
}

// 统计信息
var (
	//用户连接统计
	mapUserWsStat = sync.Map{}
	//添加or减少连接的控制chan
	websocketStat = make(chan websocketStatItem, 1000)
)

// 累增ws连接数计数
func increaseWebsocketConnectCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_CONNECT_COUNT,
		Value:   1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("increaseWebsocketConnectCount 输入管道超时,丢弃消息")
		return
	}
}

// 减少ws连接数计数
func decreaseWebsocketConnectCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_CONNECT_COUNT,
		Value:   -1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseWebsocketConnectCount 输入管道超时,丢弃消息")
		return
	}
}

// 累增合图请求数计数
func increaseCombineRequestCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_COMBINE_IMAGE_COUNT,
		Value:   1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("increaseCombineRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 减少合图请求数计数
func decreaseCombineRequestCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_COMBINE_IMAGE_COUNT,
		Value:   -1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseCombineRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 累增unity请求数计数
func increaseUnityRequestCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_UNITY_HANDLE_COUNT,
		Value:   1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseCombineRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 减少unity请求数计数
func decreaseUnityRequestCount(userId, guestId int64) {
	data := websocketStatItem{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_UNITY_HANDLE_COUNT,
		Value:   -1,
	}
	select {
	case websocketStat <- data:
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseUnityRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 消费数据
func ConsumeWebsocketStatData(ctx context.Context) {
	defer func() {
		if err := recover(); err != nil {
			logx.Error("ConsumeWebsocketStatData panic:", err)
		}
	}()
	go func() {
		select {
		case <-ctx.Done():
			panic("ConsumeWebsocketStatData ctx deadline")
		}
	}()
	for {
		select {
		case data := <-websocketStat:
			key := fmt.Sprintf("%d_%d", data.UserId, data.GuestId)
			statData, ok := mapUserWsStat.Load(key)
			switch data.Type {
			case TYPE_CUR_CONNECT_COUNT: //ws连接计数
				if !ok {
					mapUserWsStat.Store(key, mapUserWsStatItem{
						CurWsConnectCount: data.Value,
					})
					continue
				}
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.CurWsConnectCount += data.Value
				//没有连接就删除
				if stat.CurWsConnectCount <= 0 {
					mapUserWsStat.Delete(key)
					continue
				}
				//保存统计
				mapUserWsStat.Store(key, stat)
			case TYPE_CUR_COMBINE_IMAGE_COUNT: //请求算法合图计数
				//不存在
				if !ok {
					continue
				}
				//存在
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.CurCombineCount += data.Value
				if stat.CurCombineCount < 0 {
					stat.CurCombineCount = 0
				}
				//保存统计
				mapUserWsStat.Store(key, stat)
			case TYPE_CUR_UNITY_HANDLE_COUNT: //unity处理计数
				if !ok {
					continue
				}
				//存在
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.CurUnityHandleCount += data.Value
				if stat.CurUnityHandleCount <= 0 {
					stat.CurUnityHandleCount = 0
				}
				//保存统计
				mapUserWsStat.Store(key, stat)
			}
		}
	}
}