package group_m

import (
	"fmt"
	"git.hilo.cn/hilo-common/domain"
	"git.hilo.cn/hilo-common/resource/mysql"
	"git.hilo.cn/hilo-common/utils"
	"github.com/bluele/gcache"
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hilo-group/_const/enum/group_e"
	"hilo-group/myerr"
	"hilo-group/myerr/bizerr"
	"math/rand"
	"sort"
	"time"
)

var (
	FuncAddEditGroupCd func(model *domain.Model, imGroupId mysql.Str) error
)

type GroupInfo struct {
	Id             int64
	ImGroupId      string
	TxGroupId      string
	Type           uint16
	Code           string
	OriginCode     string
	Owner          uint64
	Name           string
	Introduction   string
	Notification   string
	FaceUrl        string
	Country        string
	ChannelId      string
	Password       string
	EntryLevel     uint32 // obsolete
	MicOn          bool
	LoadHistory    bool
	ThemeId        int16
	MicNumType     group_e.GroupMicNumType
	TouristMic     uint8     // 游客是否能上麦1是2否
	TouristSendMsg uint8     // 游客是否能发消息1是2否
	TouristSendPic uint8     // 游客是否能发图片1是2否
	MemberFee      uint64    // 加入会员需要黄钻数
	CreatedTime    time.Time `gorm:"->"`
	UpdatedTime    time.Time `gorm:"->"`
	VisitCount     int64     `gorm:"-"` // 热度
}

func GenerateGroupCode(n uint16) string {
	const numbers = "0123456789"
	b := make([]byte, n)
	for i := range b {
		if i == 0 {
			// 第一个数字不能为0
			b[i] = numbers[1+rand.Int()%(len(numbers)-1)]

		} else {
			b[i] = numbers[rand.Int()%len(numbers)]
		}
	}
	return string(b)
}

func CreateGroup(model *domain.Model, groupInfo *GroupInfo) error {
	return model.Db.Create(groupInfo).Error
}

func FindGroupByOwner(model *domain.Model, ownerId uint64) ([]GroupInfo, error) {
	rows := make([]GroupInfo, 0)
	err := model.Db.Where(&GroupInfo{Owner: ownerId}).Find(&rows).Error
	if err != nil {
		return nil, err
	}
	return rows, nil
}

func FindGroupMapByOwner(model *domain.Model, ownerId uint64) (map[string]GroupInfo, error) {
	rows, err := FindGroupByOwner(model, ownerId)
	if err != nil {
		return nil, err
	}
	result := make(map[string]GroupInfo, 0)
	for _, i := range rows {
		result[i.ImGroupId] = i
	}
	return result, nil
}

func FindGroupByOwners(db *gorm.DB, ownerIds []uint64) (map[uint64]GroupInfo, error) {
	rows := make([]GroupInfo, 0)
	err := db.Model(&GroupInfo{}).Where("owner IN ?", ownerIds).Find(&rows).Error
	if err != nil {
		return nil, err
	}

	result := make(map[uint64]GroupInfo, 0)
	for _, i := range rows {
		result[i.Owner] = i
	}
	return result, nil
}

func UpdateCountryByOwner(model *domain.Model, country string, ownerId uint64) error {
	return model.Db.Model(&GroupInfo{}).Where(&GroupInfo{Owner: ownerId}).Update("country", country).Error
}

// fixme: 删除这个函数
func FindGroupByCode(model *domain.Model, code string) (*GroupInfo, error) {
	r := GroupInfo{}
	err := model.Db.Where(&GroupInfo{Code: code}).First(&r).Error
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, nil
		} else {
			return nil, err
		}
	}
	return &r, nil
}

func FindGroupByCodes(db *gorm.DB, codes []string) (map[string]GroupInfo, error) {
	rows := make([]GroupInfo, 0)
	err := db.Where("code IN ?", codes).Find(&rows).Error
	if err != nil {
		return nil, err
	}

	result := make(map[string]GroupInfo, 0)
	for _, i := range rows {
		result[i.Code] = i
	}
	return result, nil
}

func GetGroupInfo(model *domain.Model, groupId string) (*GroupInfo, error) {
	if len(groupId) <= 0 {
		return nil, bizerr.GroupNotFound
	}
	r := GroupInfo{}
	err := model.Db.Where(&GroupInfo{ImGroupId: groupId}).First(&r).Error
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, nil
		} else {
			return nil, err
		}
	}
	return &r, nil
}

func GetInfoByTxGroupId(model *domain.Model, txGroupId string) (*GroupInfo, error) {
	if len(txGroupId) <= 0 {
		return nil, bizerr.GroupNotFound
	}

	r := GroupInfo{}
	err := model.Db.Where(&GroupInfo{TxGroupId: txGroupId}).First(&r).Error
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, nil
		} else {
			return nil, err
		}
	}
	return &r, nil
}

// 分几次获取
// 每次500只
func BatchGetGroupInfo(model *domain.Model, groupIds []string) (map[string]GroupInfo, error) {
	result := make(map[string]GroupInfo, 0)
	total := len(groupIds)
	if total <= 0 {
		return result, nil
	}
	const NUM = 500
	start, end := 0, NUM
	for start < total {
		if end > total {
			end = total
		}
		tmpGroupId := groupIds[start:end]
		data := make([]GroupInfo, 0)
		if err := model.Db.Where("im_group_id IN ?", tmpGroupId).Find(&data).Error; err != nil {
			return result, err
		}
		for _, i := range data {
			result[i.ImGroupId] = i
		}
		start += NUM
		end += NUM
	}
	model.Log.Infof("BatchGetGroupInfo expected:%v,actual:%v", len(groupIds), len(result))
	if len(groupIds) != len(result) {
		model.Log.Warnf("BatchGetGroupInfo expected:%v", groupIds)
	}
	return result, nil
}

func GetGroupByCode(model *domain.Model, code string) (*GroupInfo, error) {
	rows := make([]GroupInfo, 0)
	err := model.Db.Where(&GroupInfo{Code: code}).Find(&rows).Error
	if err != nil {
		return nil, err
	}
	if len(rows) > 0 {
		return &rows[0], nil
	}
	return nil, nil
}

func GetGroupByCodes(model *domain.Model, codes []string) (map[string]GroupInfo, error) {
	rows := make([]GroupInfo, 0)
	err := model.Db.Where("code in (?)", codes).Find(&rows).Error
	if err != nil {
		return nil, err
	}
	mapGroup := map[string]GroupInfo{}
	for i, _ := range rows {
		mapGroup[rows[i].Code] = rows[i]
	}
	return mapGroup, nil
}

func (g *GroupInfo) Update(model *domain.Model, imGroupId string, fields []string) *gorm.DB {
	return model.Db.Model(&GroupInfo{}).Where("im_group_id = ?", imGroupId).Select(fields).Updates(g)
}

func ResetGroupInfo(model *domain.Model, groupId string, code string) error {
	name := fmt.Sprintf(utils.DEFAULT_NICK, code)
	gi := GroupInfo{
		Name:         name,
		FaceUrl:      "",
		Introduction: "",
		Notification: "",
	}
	if err := gi.Update(model, groupId, []string{"name", "face_url", "introduction", "notification"}).Error; err != nil {
		model.Log.Errorf("ResetGroupInfo fail:%v", err)
		return err
	}
	if err := RemoveWelcomeText(model.Db, groupId); err != nil {
		model.Log.Errorf("RemoveWelcomeText fail:%v", err)
		return err
	}
	// 编辑群组资料cd
	if err := FuncAddEditGroupCd(model, groupId); err != nil {
		model.Log.Warnf("AddEditGroupCd fail %s ", groupId)
	}
	return nil
}

// 设置群组头像
func SetFaceUrl(model *domain.Model, groupId, faceUrl string) error {
	gi := GroupInfo{
		FaceUrl: faceUrl,
	}
	return gi.Update(model, groupId, []string{"face_url"}).Error
}

// 找到所有群
func (g *GroupInfo) FindAllGroups(db *gorm.DB) ([]GroupInfo, error) {
	result := make([]GroupInfo, 0)
	err := db.Where(g).Find(&result).Error
	return result, err
}

func FindNoPasswordGroups(model *domain.Model) ([]GroupInfo, error) {
	result := make([]GroupInfo, 0)
	err := model.Db.Where("password = ''").Find(&result).Error
	return result, err
}

func FindNoPasswordGroupsV2(model *domain.Model, imGroupIds []string) ([]GroupInfo, error) {
	result := make([]GroupInfo, 0)
	if len(imGroupIds) <= 0 {
		return result, nil
	}
	err := model.Db.Where("im_group_id in ? AND password = ''", imGroupIds).Find(&result).Error
	return result, err
}

func GetAllGroupIds(db *gorm.DB) ([]string, error) {
	result := make([]GroupInfo, 0)
	err := db.Find(&result).Error
	if err != nil {
		return nil, err
	}
	groupIds := make([]string, 0)
	for _, i := range result {
		groupIds = append(groupIds, i.ImGroupId)
	}
	return groupIds, err
}

var ownerCountryGroupCache = gcache.New(10000).LRU().Build()

// 缓存15分钟
func FindOwnerCountryGroups(model *domain.Model, country string) ([]GroupInfo, error) {
	key := fmt.Sprintf("owner:country:group:%s", country)
	if data, err := ownerCountryGroupCache.Get(key); err == nil {
		model.Log.Infof("FindOwnerCountryGroups hit:%v", len(data.([]GroupInfo)))
		return data.([]GroupInfo), nil
	}
	result := make([]GroupInfo, 0)
	//err := model.Db.Model(&GroupInfo{}).Joins("left join user on user.id = owner").Where("user.country = ?", country).Where("password = ''").Find(&result).Error
	err := model.Db.Model(&GroupInfo{}).Where(&GroupInfo{
		Country: country,
	}).Find(&result).Error
	_ = ownerCountryGroupCache.SetWithExpire(key, result, time.Minute*15)
	return result, err
}

//过滤被封禁的群或者有密码的群
func FilterGroupBannedOrPassword(groupIds []string) (map[string]struct{}, error) {
	type result struct {
		ImGroupId string
	}
	results := []result{}
	if err := mysql.Db.Model(&GroupInfo{}).Select("im_group_id").Where("im_group_id in (?)", groupIds).Where("password = ''").Where("not EXISTS (SELECT 1 from group_banned b where b.im_group_id = group_info.im_group_id) ").Scan(&results).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	imGroupIdSet := map[string]struct{}{}
	for i := 0; i < len(results); i++ {
		imGroupIdSet[results[i].ImGroupId] = struct{}{}
	}
	return imGroupIdSet, nil
}

func GetGroupImGroupIdByDbId(model *domain.Model, dbId uint64) (string, error) {
	r := GroupInfo{}
	//err := model.Db.Model(&GroupInfo{}).First(&r, dbId).Error
	//if err != nil {
	//	return "", myerr.WrapErr(err)
	//}
	if err := model.Db.Raw("SELECT id, im_group_id from group_info i where i.id = ?", dbId).First(&r).Error; err != nil {
		return "", myerr.WrapErr(err)
	}

	return r.ImGroupId, nil
}

func GetGroupInfoByDbIds(model *domain.Model, dbIds []uint64) (map[mysql.ID]GroupInfo, error) {
	type result struct {
		Id uint64
		GroupInfo
	}
	rs := []result{}
	if err := model.Db.Raw("SELECT * from group_info i where i.id in (?)", dbIds).Scan(&rs).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	imGroupMap := map[mysql.ID]GroupInfo{}
	for i, _ := range rs {
		imGroupMap[rs[i].Id] = rs[i].GroupInfo
	}
	return imGroupMap, nil
}

func GetGroupCodeByDbId(model *domain.Model, dbId uint64) (string, error) {
	type result struct {
		Code string
	}
	r := result{}
	if err := model.Db.Raw("SELECT code from group_info i where i.id = ?", dbId).First(&r).Error; err != nil {
		return "", myerr.WrapErr(err)
	}
	return r.Code, nil
}

func GetGroupCodeByDbIds(model *domain.Model, dbIds []uint64) (map[mysql.ID]string, error) {
	type result struct {
		Id   uint64
		Code string
	}
	rs := []result{}
	if err := model.Db.Raw("SELECT id, code from group_info i where i.id in (?)", dbIds).Scan(&rs).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	imGroupMap := map[mysql.ID]string{}
	for i, _ := range rs {
		imGroupMap[rs[i].Id] = rs[i].Code
	}
	return imGroupMap, nil
}

func GetGroupOwnerByDbIds(model *domain.Model, dbIds []uint64) (map[mysql.ID]mysql.ID, error) {
	type result struct {
		Id    uint64
		Owner uint64
	}
	rs := []result{}
	if err := model.Db.Raw("SELECT owner, id from group_info i where i.id in (?)", dbIds).Scan(&rs).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	imGroupMap := map[mysql.ID]mysql.ID{}
	for i, _ := range rs {
		imGroupMap[rs[i].Id] = rs[i].Owner
	}
	return imGroupMap, nil
}

func GetGroupIdByDbIds(model *domain.Model, dbIds []uint64) (map[mysql.ID]string, error) {
	type result struct {
		Id        uint64
		ImGroupId string
	}
	rs := []result{}
	if err := model.Db.Raw("SELECT id, im_group_id from group_info i where i.id in (?)", dbIds).Scan(&rs).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	imGroupMap := map[mysql.ID]string{}
	for i, _ := range rs {
		imGroupMap[rs[i].Id] = rs[i].ImGroupId
	}
	return imGroupMap, nil
}

func GetGroupDbIdByOwner(model *domain.Model, ownerId uint64) (uint64, error) {
	type result struct {
		Id uint64
	}
	results := []result{}
	if err := model.Db.Raw("SELECT i.id from group_info i where i.owner = ?", ownerId).Scan(&results).Error; err != nil {
		return 0, myerr.WrapErr(err)
	}
	if len(results) == 0 {
		return 0, nil
	}
	return results[0].Id, nil
}

func GetGroupInfoByOwner(model *domain.Model, ownerId uint64) (*GroupInfo, error) {
	rows := make([]*GroupInfo, 0)
	err := model.Db.Where("owner = ?", ownerId).Find(&rows).Error
	if err != nil {
		return nil, err
	}
	if len(rows) == 0 {
		return nil, nil
	}
	return rows[0], nil
}

func GetGroupDbIdByCode(model *domain.Model, code string) (uint64, error) {
	type result struct {
		Id uint64
	}
	results := []result{}
	if err := model.Db.Raw("SELECT i.id from group_info i where i.code = ?", code).Scan(&results).Error; err != nil {
		return 0, myerr.WrapErr(err)
	}
	if len(results) == 0 {
		return 0, nil
	}
	return results[0].Id, nil
}

func GetGroupDbIdByCodes(model *domain.Model, codes []string) (map[string]uint64, error) {
	type result struct {
		Id   uint64
		Code string
	}
	results := []result{}
	if err := model.Db.Raw("SELECT i.id, i.code from group_info i where i.code in (?)", codes).Scan(&results).Error; err != nil {
		return nil, myerr.WrapErr(err)
	}
	if len(results) == 0 {
		return nil, nil
	}

	rs := map[string]uint64{}

	for i, _ := range results {
		rs[results[i].Code] = results[i].Id
	}
	return rs, nil
}

//获取数据库的ID，特殊用途
func GetGroupDbId(model *domain.Model, imGroupId string) (mysql.ID, error) {
	type result struct {
		Id uint64
	}
	results := []result{}
	if err := model.Db.Raw("SELECT i.id from group_info i where i.im_group_id = ?", imGroupId).Scan(&results).Error; err != nil {
		return 0, myerr.WrapErr(err)
	}
	if len(results) == 0 {
		return 0, bizerr.GroupNotFound
	}
	return results[0].Id, nil
}

var officialGroup []string

func IsOfficialGroup(groupId string) bool {
	for _, i := range officialGroup {
		if i == groupId {
			return true
		}
	}
	return false
}

func GetLatestGroupInfos(model *domain.Model, limit, lastId int, groupIds []string) (res []*GroupInfo, err error) {
	if len(groupIds) <= 0 {
		return nil, nil
	}

	res = make([]*GroupInfo, 0)
	query := model.Db.Debug().Model(GroupInfo{}).Where("im_group_id IN ?", groupIds)
	if lastId > 0 {
		query.Where("id < ?", lastId)
	}
	err = query.Order("id DESC").Limit(limit).Find(&res).Error
	return
}

func GetFamilyRooms(model *domain.Model, familyId uint64, pageSize, pageIndex int) (res []*GroupInfo, nextIdx int, hasNext bool, err error) {
	allImGroupIds := make([]string, 0)
	var count int64
	err = model.Db.Model(GroupInfo{}).Select("im_group_id").Where("owner in (select user_id from group_power_user where group_power_id=?)",
		familyId).Pluck("im_group_id", &allImGroupIds).Count(&count).Error
	if err != nil {
		return nil, 0, false, err
	}
	// 房间热度排序
	visitCountMap, visitCountList, err := BatchGetRoomVisitCountList(model.Log, allImGroupIds)
	if err != nil {
		return nil, 0, false, err
	}
	roomNum := len(visitCountList)
	if roomNum > pageIndex {
		endIndex := pageIndex + pageSize
		if roomNum >= endIndex {
			visitCountList = visitCountList[pageIndex : pageIndex+pageSize]
			if roomNum > endIndex {
				nextIdx = endIndex
				hasNext = true
			}
		} else {
			visitCountList = visitCountList[pageIndex:]
		}
	} else {
		return nil, 0, false, err
	}
	showImGroupIdList := make([]string, 0, len(visitCountList))
	for _, v := range visitCountList {
		showImGroupIdList = append(showImGroupIdList, v.ImGroupId)
	}

	res = make([]*GroupInfo, 0)
	err = model.Db.Model(GroupInfo{}).Where("im_group_id in ?", showImGroupIdList).Find(&res).Error
	if err != nil {
		return nil, 0, false, err
	}
	for i, v := range res {
		if c, ok := visitCountMap[v.ImGroupId]; ok {
			res[i].VisitCount = c
		}
	}
	sort.Slice(res, func(i, j int) bool {
		return res[i].VisitCount > res[j].VisitCount
	})

	return res, nextIdx, hasNext, nil
}

func IsUseTRTC(model *domain.Model, imGroupId string) bool {
	var count int64
	if err := model.DB().Table("group_trtc").Where("im_group_id=?", imGroupId).Count(&count).Error; err != nil {
		model.Log.Errorf("IsUseTRTC err:%v, groupId:%s", err, imGroupId)
		return false
	}
	return count > 0
}

type GroupTrtc struct {
	mysql.Entity
	ImGroupId mysql.Str
}

// 初始化trtc房间
func InitTRTC(model *domain.Model, imGroupId string) error {
	if err := model.DB().Model(GroupTrtc{}).Clauses(clause.OnConflict{DoNothing: true}).Create(&GroupTrtc{ImGroupId: imGroupId}).Error; err != nil {
		model.Log.Errorf("InitTRTC err:%v, groupId:%s", err, imGroupId)
		return err
	}
	return nil
}