package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hepa-calc-api/api/model"
	"hepa-calc-api/api/requests"
	"hepa-calc-api/global"
)

type BaseClassDao struct {
}

// GetBaseClassById 获取数据-id
func (r *BaseClassDao) GetBaseClassById(BaseClassId int64) (m *model.BaseClass, err error) {
	err = global.Db.First(&m, BaseClassId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassPreloadById 获取数据-加载全部关联-id
func (r *BaseClassDao) GetBaseClassPreloadById(BaseClassId int64) (m *model.BaseClass, err error) {
	err = global.Db.Preload(clause.Associations).First(&m, BaseClassId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// DeleteBaseClass 删除
func (r *BaseClassDao) DeleteBaseClass(tx *gorm.DB, maps interface{}) error {
	err := tx.Where(maps).Delete(&model.BaseClass{}).Error
	if err != nil {
		return err
	}
	return nil
}

// DeleteBaseClassById 删除-id
func (r *BaseClassDao) DeleteBaseClassById(tx *gorm.DB, BaseClassId int64) error {
	if err := tx.Delete(&model.BaseClass{}, BaseClassId).Error; err != nil {
		return err
	}
	return nil
}

// EditBaseClass 修改
func (r *BaseClassDao) EditBaseClass(tx *gorm.DB, maps interface{}, data interface{}) error {
	err := tx.Model(&model.BaseClass{}).Where(maps).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// EditBaseClassById 修改-id
func (r *BaseClassDao) EditBaseClassById(tx *gorm.DB, BaseClassId int64, data interface{}) error {
	err := tx.Model(&model.BaseClass{}).Where("class_id = ?", BaseClassId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// GetBaseClassList 获取列表
func (r *BaseClassDao) GetBaseClassList(maps interface{}) (m []*model.BaseClass, err error) {
	err = global.Db.Where(maps).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassOrderList 获取列表-排序
func (r *BaseClassDao) GetBaseClassOrderList(maps interface{}) (m []*model.BaseClass, err error) {
	err = global.Db.Where(maps).Order("sort desc").Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassCount 获取数量
func (r *BaseClassDao) GetBaseClassCount(maps interface{}) (total int64, err error) {
	err = global.Db.Model(&model.BaseClass{}).Where(maps).Count(&total).Error
	if err != nil {
		return 0, err
	}
	return total, nil
}

// GetBaseClassListRand 获取列表-随机
func (r *BaseClassDao) GetBaseClassListRand(maps interface{}, limit int) (m []*model.BaseClass, err error) {
	err = global.Db.Where(maps).Order("rand()").Limit(limit).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// AddBaseClass 新增
func (r *BaseClassDao) AddBaseClass(tx *gorm.DB, model *model.BaseClass) (*model.BaseClass, error) {
	if err := tx.Create(model).Error; err != nil {
		return nil, err
	}
	return model, nil
}

// GetBaseClass 获取
func (r *BaseClassDao) GetBaseClass(maps interface{}) (m *model.BaseClass, err error) {
	err = global.Db.Where(maps).First(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassOrderLimitList 获取列表-排序、限制数量
func (r *BaseClassDao) GetBaseClassOrderLimitList(maps interface{}, orderField string, limit int) (m []*model.BaseClass, err error) {
	err = global.Db.Where(maps).Order(orderField).Limit(limit).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassListSearch 获取列表
func (r *BaseClassDao) GetBaseClassListSearch(req requests.GetBaseClassList) (m []*model.BaseClass, err error) {
	// 构建查询条件
	query := global.Db.Model(&model.BaseClass{})

	query = query.Where("class_status = ?", 1)

	// 分类名称
	if req.ClassName != "" {
		query = query.Where("class_name LIKE ?", "%"+req.ClassName+"%")
	}

	// 分类简介
	if req.ClassBrief != "" {
		query = query.Where("class_brief LIKE ?", "%"+req.ClassBrief+"%")
	}

	// 是否推荐搜索
	if req.IsRecommendSearch != nil {
		query = query.Where("is_recommend_search = ?", req.IsRecommendSearch)
	}

	// 排序
	query = query.Order("sort desc")
	query = query.Order("convert(substring(class_name,1,1) using `GBK`) asc")
	query = query.Order("created_at desc")

	err = query.Scopes(model.Paginate(1, 10)).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetBaseClassExistsOrderList 获取列表-排序
func (r *BaseClassDao) GetBaseClassExistsOrderList(maps interface{}) (m []*model.BaseClass, err error) {
	err = global.Db.Where(maps).
		Where(
			"EXISTS (?)",
			global.Db.Model(&model.QuestionClass{}).Select("1").
				Where("question_class.class_id = base_class.class_id")).
		Order("sort desc").
		Order("convert(substring(class_name,1,1) using `GBK`) asc").
		Find(&m).
		Error
	if err != nil {
		return nil, err
	}
	return m, nil
}