package group_m

import (
	"context"
	"encoding/json"
	redisV8 "github.com/go-redis/redis/v8"
	"gorm.io/gorm"
	"hilo-user/common"
	"hilo-user/common/rediskey"
	"hilo-user/domain"
	"hilo-user/myerr"
	"hilo-user/myerr/bizerr"
	"hilo-user/resource/mysql"
	"hilo-user/resource/redisCli"
)

type GroupRoles struct {
	mysql.Entity
	UserId    uint64
	ImGroupId string
	Role      common.GroupRoleType
}

func (this *GroupInfo) TableName() string {
	return "group_info"
}

//发言，注意（发言是在麦位上）
type MicUser struct {
	model *domain.Model
	//群组uuid
	GroupUuid string
	//麦位
	I int
	//麦中的人
	ExternalId string
	//
	UserId uint64
	//静音 true:静音，false:没有静音
	Forbid bool
	//上麦的的时间戳
	Timestamp int64
}

//记录麦位上有谁。用于
type UserInMic struct {
	//群组uuid
	GroupUuid string
	//麦位
	I int
	//userId
	UserId uint64
}

// 查询用户在IM群组中的角色
func GetRoleInGroup(model *domain.Model, userId uint64, imGroupId string) (uint16, error) {
	r := GroupRoles{}
	err := model.Db.Where(&GroupRoles{
		UserId:    userId,
		ImGroupId: imGroupId}).First(&r).Error
	if err != nil {
		if err != gorm.ErrRecordNotFound {
			return 0, err
		} else {
			return 0, nil
		}
	}
	return r.Role, nil
}

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

	res := new(GroupInfo)
	err := model.Db.Where(&GroupInfo{TxGroupId: txGroupId}).First(&res).Error
	if err != nil {
		if err == gorm.ErrRecordNotFound {
			return nil, myerr.WrapErr(bizerr.GroupNotFound)
		} else {
			return nil, myerr.WrapErr(err)
		}
	}
	return res, nil
}

//获取用户在哪个麦位上。没有不在麦上，则是nil
func GetMicUserByExternalId(model *domain.Model, externalId string) (*MicUser, error) {
	if str, err := redisCli.GetRedis().Get(context.Background(), rediskey.GetPrefixGroupUserInMic(externalId)).Result(); err != nil {
		if err != redisV8.Nil {
			return nil, myerr.WrapErr(err)
		} else {
			return nil, nil
		}
	} else {
		if userInMic, err := strToUserInMic(str); err != nil {
			return nil, err
		} else {
			return GetMicUser(model, userInMic.GroupUuid, userInMic.I)
		}
	}
}

//麦位上没人，返回nil
func GetMicUser(model *domain.Model, groupUuid string, i int) (*MicUser, error) {
	if i < 1 || i > 30 {
		return nil, myerr.NewSysErrorF("麦序不对，不在范围值内 i:%v", i)
	}
	str, err := redisCli.GetRedis().Get(context.Background(), rediskey.GetPrefixGroupMicUser(groupUuid, i)).Result()
	if err != nil {
		if err == redisV8.Nil {
			return nil, nil
		} else {
			return nil, myerr.WrapErr(err)
		}
	}

	var micUser MicUser
	err = json.Unmarshal([]byte(str), &micUser)
	if err != nil {
		return nil, err
	}
	return &MicUser{
		model:      model,
		GroupUuid:  groupUuid,
		I:          i,
		ExternalId: micUser.ExternalId,
		UserId:     micUser.UserId,
		Forbid:     micUser.Forbid,
		Timestamp:  micUser.Timestamp,
	}, nil
}

func strToUserInMic(str string) (UserInMic, error) {
	userInMic := UserInMic{}
	if err := json.Unmarshal([]byte(str), &userInMic); err != nil {
		return UserInMic{}, myerr.WrapErr(err)
	}
	return userInMic, nil
}