package task

import (
	"context"
	"errors"
	"fmt"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
	"mongo.games.com/goserver/core/logger"
	mymongo "mongo.games.com/goserver/core/mongox"
	mymysql "mongo.games.com/goserver/core/mysqlx"

	"mongo.games.com/game/common"
	mongomodel "mongo.games.com/game/statistics/modelmongo"
)

// 新用户id
func GetNewPayerIds(plt string, startTime, endTime string) ([]int, error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	c, err := mymongo.GetUserCollection(plt, mongomodel.UserAccount)
	if err != nil {
		return nil, err
	}

	var res []struct{ Snid int }
	dd, err := c.Find(context.TODO(), bson.M{"registetime": bson.M{"$gte": s, "$lt": e}}, options.Find().SetProjection(bson.M{"snid": 1}))
	if err != nil {
		if errors.Is(err, mongo.ErrNoDocuments) {
			return nil, nil
		}
		logger.Logger.Errorf("find new player snid get err: %v", err)
		return nil, err
	}
	if err := dd.All(context.TODO(), &res); err != nil {
		logger.Logger.Errorf("find new player snid decode err: %v", err)
		return nil, err
	}
	var ret []int
	for _, v := range res {
		ret = append(ret, v.Snid)
	}
	logger.Logger.Tracef("find new player snid: %v", ret)
	return ret, nil
}

// 场次破产总人数
func GameFreeIdBankruptPlayerCount(plt string, ids []int, startTime, endTime string, gamefreeid int) (int, error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	db, err := mymysql.GetDatabase("count")
	if err != nil {
		return 0, err
	}
	var ret int
	for _, v := range ids {
		var n int64
		if err = db.Table("bankrupt_log").Where("snid = ? AND bankrupt_time >= ? AND bankrupt_time < ? AND game_free_id = ?",
			v, s.Unix(), e.Unix(), gamefreeid).Count(&n).Error; err != nil {
			logger.Logger.Errorf("find bankrupt player count get err: %v", err)
			return 0, err
		}
		if n > 0 {
			ret++
		}
	}
	return ret, nil
}

// 场次参与总人数
func PlayingGameCount(plt string, ids []int, startTime, endTime string, gamefreeid int) (int, error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	c, err := mymongo.GetLogCollection(plt, mongomodel.LogGamePlayerListLog)
	if err != nil {
		return 0, err
	}

	var ret int
	for _, v := range ids {
		// 参与过游戏
		n, err := c.CountDocuments(context.TODO(), bson.M{"snid": v, "time": bson.M{"$gte": s, "$lt": e}, "gamefreeid": gamefreeid})
		if err != nil {
			logger.Logger.Errorf("find playing game count get err: %v", err)
			return 0, err
		}
		if n > 0 {
			ret++
		}
	}
	return ret, nil
}

// NewPlayerBankruptRate 新用户破产率
// 新用户游戏破产率 = 新用户游戏破产玩家数量/新用户游戏参与总人数；破产数量，每个玩家每个游戏破产只统计一次；参与人数，每个玩家每个游戏只统计一次；
// 返回 新用户数量，破产人数，参与人数
func NewPlayerBankruptRate(plt string, startTime, endTime string, gamefreeid int) (n, a, b int, err error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	if s.IsZero() || e.IsZero() {
		return 0, 0, 0, fmt.Errorf("time format error")
	}
	ids, err := GetNewPayerIds(plt, startTime, endTime)
	if err != nil {
		return 0, 0, 0, err
	}

	a, err = GameFreeIdBankruptPlayerCount(plt, ids, startTime, endTime, gamefreeid)
	if err != nil {
		return 0, 0, 0, err
	}
	b, err = PlayingGameCount(plt, ids, startTime, endTime, gamefreeid)
	if err != nil {
		return 0, 0, 0, err
	}
	if b == 0 {
		return 0, 0, 0, nil
	}
	return
}

// ActivePlayerCount 活跃玩家游戏总人数
func ActivePlayerCount(plt string, startTime, endTime string, gamefreeid int) (int, error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	c, err := mymongo.GetLogCollection(plt, mongomodel.LogGamePlayerListLog)
	if err != nil {
		return 0, err
	}

	var count []struct {
		Count int
	}
	cur, err := c.Aggregate(context.TODO(), bson.A{
		bson.M{"$match": bson.M{"time": bson.M{"$gte": s, "$lt": e}, "gamefreeid": gamefreeid}},
		bson.M{"$group": bson.M{"_id": "$snid"}},
		bson.M{"$count": "count"},
	})
	if err != nil {
		logger.Logger.Errorf("find active player count get err: %v", err)
		return 0, err
	}
	if err := cur.All(context.TODO(), &count); err != nil {
		logger.Logger.Errorf("find active player count decode err: %v", err)
		return 0, err
	}

	if len(count) == 0 {
		return 0, nil
	}

	return count[0].Count, nil
}

// ActivePlayerBankruptCount 活跃玩家破产总人数
func ActivePlayerBankruptCount(plt string, startTime, endTime string, gamefreeid int) (int, error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	db, err := mymysql.GetDatabase("count")
	if err != nil {
		return 0, err
	}
	var n int64
	if err = db.Table("bankrupt_log").Where("bankrupt_time >= ? AND bankrupt_time < ? AND game_free_id = ?",
		s.Unix(), e.Unix(), gamefreeid).Group("snid").Count(&n).Error; err != nil {
		logger.Logger.Errorf("find bankrupt count get err: %v", err)
		return 0, err
	}
	return int(n), nil
}

// ActivePlayerBankruptRate 活跃玩家破产率
// 活跃玩家游戏破产率 = 活跃玩家游戏破产玩家数量/活跃玩家游戏总人数；破产数量，每个玩家每个游戏破产只统计一次；参与人数，每个玩家每个游戏只统计一次；
// 返回 破产人数，参与人数
func ActivePlayerBankruptRate(plt string, startTime, endTime string, gamefreeid int) (a, b int, err error) {
	s, e := common.StrRFC3339TimeToTime(startTime), common.StrRFC3339TimeToTime(endTime)
	if s.IsZero() || e.IsZero() {
		return 0, 0, fmt.Errorf("time format error")
	}

	a, err = ActivePlayerBankruptCount(plt, startTime, endTime, gamefreeid)
	if err != nil {
		return 0, 0, err
	}
	b, err = ActivePlayerCount(plt, startTime, endTime, gamefreeid)
	if err != nil {
		return 0, 0, err
	}
	if b == 0 {
		return 0, 0, nil
	}
	return
}