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_COMBINE_IMAGE_ERR_COUNT websocketStatType = "TYPE_CUR_COMBINE_IMAGE_ERR_COUNT" //合图失败数
	TYPE_CUR_UNITY_HANDLE_COUNT      websocketStatType = "TYPE_CUR_UNITY_HANDLE_COUNT"      //unity处理数
	TYPE_UNITY_ERR_COUNT             websocketStatType = "TYPE_UNITY_ERR_COUNT"             //unity错误处理数
)

type websocketStatData struct {
	UserId  int64             `json:"user_id"`  //用户id
	GuestId int64             `json:"guest_id"` //游客id
	Type    websocketStatType `json:"type"`     //类型
	Num     int               `json:"num"`      //数值
}
type mapUserWsStatItem struct {
	CurCombineCount     int `json:"cur_combine_count"`      //当前合图数
	CombineErrCount     int `json:"combine_err_count"`      //合图失败数
	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
	UnityErrCount       int `json:"unity_err_count"`        //unity处理错误数
}

// 统计信息
var (
	//用户连接统计
	mapUserWsStat = sync.Map{}
	//消息控制通道的数据结构
	websocketStat = make(chan websocketStatData, 1000)
	//ws总的连接数
	curWsTotalCount int
	//合图失败总数
	combineErrTotalCount int
	//unity正在渲染总数
	curUnityHandleTotalCount int
	//unity错误统计数
	unityErrTotalCount int
	//算法正在合图总数
	curCombineTotalCount int
)

// 累增ws连接数计数
func increaseWebsocketConnectCount(userId, guestId int64) {
	data := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_CONNECT_COUNT,
		Num:     1,
	}
	select {
	case websocketStat <- data:
		curWsTotalCount += data.Num
		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 := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_CONNECT_COUNT,
		Num:     -1,
	}
	select {
	case websocketStat <- data:
		curWsTotalCount += data.Num
		if curWsTotalCount < 0 {
			curWsTotalCount = 0
		}
		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 := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_COMBINE_IMAGE_COUNT,
		Num:     1,
	}
	select {
	case websocketStat <- data:
		curCombineTotalCount += data.Num
		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 := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_COMBINE_IMAGE_COUNT,
		Num:     -1,
	}
	select {
	case websocketStat <- data:
		curCombineTotalCount += data.Num
		if curCombineTotalCount < 0 {
			curCombineTotalCount = 0
		}
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseCombineRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 累增合图失败数计数
func increaseCombineRequestErrorCount(userId, guestId int64) {
	data := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_COMBINE_IMAGE_ERR_COUNT,
		Num:     1,
	}
	select {
	case websocketStat <- data:
		combineErrTotalCount += data.Num
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("increaseCombineRequestErrorCount 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 := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_UNITY_HANDLE_COUNT,
		Num:     1,
	}
	select {
	case websocketStat <- data:
		curUnityHandleTotalCount += data.Num
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("increaseUnityRequestCount 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 := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_CUR_UNITY_HANDLE_COUNT,
		Num:     -1,
	}
	select {
	case websocketStat <- data:
		curUnityHandleTotalCount += data.Num
		if curUnityHandleTotalCount < 0 {
			curUnityHandleTotalCount = 0
		}
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("decreaseUnityRequestCount 输入管道超时,丢弃消息")
		return
	}
}

// 累曾unity错误统计
func increaseUnityErrorCount(userId, guestId int64) {
	data := websocketStatData{
		UserId:  userId,
		GuestId: guestId,
		Type:    TYPE_UNITY_ERR_COUNT,
		Num:     1,
	}
	select {
	case websocketStat <- data:
		unityErrTotalCount += data.Num
		return
	case <-time.After(time.Millisecond * 200):
		logx.Error("increaseUnityErrorCount 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.Num,
					})
					continue
				}
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.CurWsConnectCount += data.Num
				//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.Num
				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.Num
				if stat.CurUnityHandleCount <= 0 {
					stat.CurUnityHandleCount = 0
				}
				//保存统计
				mapUserWsStat.Store(key, stat)
			case TYPE_CUR_COMBINE_IMAGE_ERR_COUNT: //合图失败计数
				if !ok {
					continue
				}
				//存在
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.CombineErrCount += data.Num
				//保存统计
				mapUserWsStat.Store(key, stat)
			case TYPE_UNITY_ERR_COUNT: //unity错误信息
				if !ok {
					continue
				}
				//存在
				stat, ok := statData.(mapUserWsStatItem)
				if !ok {
					logx.Error("断言mapUserWsStatItem错误")
					continue
				}
				stat.UnityErrCount += data.Num
				//保存统计
				mapUserWsStat.Store(key, stat)
			}
		}
	}
}