package app

import (
	"errors"
	"git.echol.cn/loser/lckt/global"
	"git.echol.cn/loser/lckt/model/app"
	"git.echol.cn/loser/lckt/model/app/request"
	user2 "git.echol.cn/loser/lckt/model/user"
	"go.uber.org/zap"
)

type TeacherVipService struct{}

// GetTeacherVipList 获取讲师包月列表
func (u *TeacherVipService) GetTeacherVipList(p request.GetTeacherVipList) (list []app.TeacherVip, total int64, err error) {
	limit := p.PageSize
	offset := (p.Page - 1) * p.PageSize

	db := global.GVA_DB.Model(&app.TeacherVip{})
	if p.TeacherId != 0 {
		db.Where("teacher_id = ? ", p.TeacherId)
	}

	if p.Keyword != "" {
		db = db.Where("title LIKE ?", "%"+p.Keyword+"%")
	}

	err = db.Count(&total).Error
	if err != nil {
		global.GVA_LOG.Error("查询讲师包月总数失败", zap.Error(err))
		return nil, 0, err
	}
	err = db.Limit(limit).Offset(offset).Find(&list).Error
	if err != nil {
		global.GVA_LOG.Error("查询讲师包月列表失败", zap.Error(err))
		return nil, 0, err
	}
	return
}

func (u *TeacherVipService) CreateTeacherVip(p app.TeacherVip, userId uint) (err error) {
	// 判断是否是讲师
	var user user2.User
	err = global.GVA_DB.Where("id = ?", userId).First(&user).Error
	if err != nil {
		global.GVA_LOG.Error("查询用户信息失败：", zap.Error(err))
		return err
	}

	if user.UserType != 2 {
		// 不是讲师
		global.GVA_LOG.Error("当前用户不是讲师，无法创建讲师VIP")
		return errors.New("当前用户不是讲师，无法创建讲师VIP")
	}
	p.Avatar = user.Avatar

	err = global.GVA_DB.Create(&p).Error
	if err != nil {
		global.GVA_LOG.Error("创建讲师VIP失败", zap.Error(err))
		return err
	}
	return nil
}

func (u *TeacherVipService) DeleteTeacherVip(p app.TeacherVip) (err error) {
	err = global.GVA_DB.Delete(&p).Error
	if err != nil {
		global.GVA_LOG.Error("删除讲师VIP失败", zap.Error(err))
		return err
	}
	return nil
}

func (u *TeacherVipService) Update(p app.TeacherVip) (err error) {
	// 查询讲师头像
	avatar := ""
	err = global.GVA_DB.Model(&user2.User{}).Where("id = ?", p.TeacherId).Pluck("avatar", &avatar).Error
	if err != nil {
		global.GVA_LOG.Error("查询讲师头像失败", zap.Error(err))
	}
	p.Avatar = avatar

	err = global.GVA_DB.Save(&p).Error
	if err != nil {
		global.GVA_LOG.Error("更新讲师VIP失败", zap.Error(err))
		return err
	}
	return nil
}

func (u *TeacherVipService) GetTeacherVip(id int) (vip app.TeacherVip, err error) {
	err = global.GVA_DB.Where("id = ?", id).First(&vip).Error
	if err != nil {
		global.GVA_LOG.Error("获取讲师VIP失败", zap.Error(err))
		return vip, err
	}
	return vip, nil
}

func (u *TeacherVipService) UpdatePriceBatch(p request.UpdateTeacherVipPriceBatch) (err error) {
	err = global.GVA_DB.Model(&app.TeacherVip{}).Where("id IN ?", p.Ids).Update("price", p.Price).Error
	if err != nil {
		global.GVA_LOG.Error("批量更新讲师VIP价格失败", zap.Error(err))
		return
	}
	return
}

// ===========================管理后台接口===========================