package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hospital-admin-api/api/model"
	"hospital-admin-api/api/requests"
	"hospital-admin-api/global"
)

type ArticleScienceDao struct {
}

// GetArticleScienceById 获取数据-id
func (r *ArticleScienceDao) GetArticleScienceById(articleId int64) (m *model.ArticleScience, err error) {
	err = global.Db.First(&m, articleId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

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

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

// DeleteArticleScienceById 删除-id
func (r *ArticleScienceDao) DeleteArticleScienceById(tx *gorm.DB, articleId int64) error {
	if err := tx.Delete(&model.ArticleScience{}, articleId).Error; err != nil {
		return err
	}
	return nil
}

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

// EditArticleScienceById 修改-id
func (r *ArticleScienceDao) EditArticleScienceById(tx *gorm.DB, articleId int64, data interface{}) error {
	err := tx.Model(&model.ArticleScience{}).Where("article_id = ?", articleId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

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

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

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

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

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

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

// Inc 自增
func (r *ArticleScienceDao) Inc(tx *gorm.DB, articleId int64, field string, numeral int) error {
	err := tx.Model(&model.ArticleScience{}).Where("article_id = ?", articleId).UpdateColumn(field, gorm.Expr(field+" + ?", numeral)).Error
	if err != nil {
		return err
	}
	return nil
}

// Dec 自减
func (r *ArticleScienceDao) Dec(tx *gorm.DB, articleId int64, field string, numeral int) error {
	err := tx.Model(&model.ArticleScience{}).Where("article_id = ?", articleId).UpdateColumn(field, gorm.Expr(field+" - ?", numeral)).Error
	if err != nil {
		return err
	}
	return nil
}

// GetArticleScienceSum 获取数量
func (r *ArticleScienceDao) GetArticleScienceSum(maps interface{}, field string) (total float64, err error) {
	var result struct {
		Sum float64
	}

	err = global.Db.Model(&model.ArticleScience{}).Where(maps).Select("SUM(" + field + ") as sum").Scan(&result).Error
	if err != nil {
		return 0, err
	}

	return result.Sum, nil
}

// GetArticleScienceListByTime 获取列表-开始时间/过期时间
func (r *ArticleScienceDao) GetArticleScienceListByTime(maps interface{}, startTime, endTime, field string) (m []*model.ArticleScience, err error) {
	err = global.Db.Where(maps).Where(field+" BETWEEN ? AND ?", startTime, endTime).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetArticleSciencePageSearch 获取列表-分页
func (r *ArticleScienceDao) GetArticleSciencePageSearch(req requests.GetArticleSciencePage, page, pageSize int) (m []*model.ArticleScience, total int64, err error) {
	var totalRecords int64

	// 构建查询条件
	query := global.Db.Model(&model.ArticleScience{})

	// 来源
	query = query.Preload("ArticleScienceSource")

	// 分类
	query = query.Preload("ArticleScienceClass.ArticleScience")

	// 文章标题
	if req.ArticleTitle != "" {
		query = query.Where("article_title LIKE ?", "%"+req.ArticleTitle+"%")
	}

	// 文章状态
	if req.ArticleStatus != nil {
		query = query.Where("article_status = ?", req.ArticleStatus)
	}

	// 是否置顶
	if req.IsTop != nil {
		query = query.Where("is_top = ?", req.IsTop)
	}

	// 文章来源
	if req.SourceId != "" {
		query = query.Where("source_id = ?", req.SourceId)
	}

	// 排序
	if req.Order != nil {
		if req.Order.UpdatedAt != "" {
			query = query.Order("updated_at " + req.Order.UpdatedAt)
		}

		if req.Order.Sort != "" {
			query = query.Order("sort " + req.Order.Sort)
		}
	}

	// 排序
	query = query.Order("created_at desc")

	// 查询总数量
	if err := query.Count(&totalRecords).Error; err != nil {
		return nil, 0, err
	}

	err = query.Scopes(model.Paginate(page, pageSize)).Find(&m).Error
	if err != nil {
		return nil, 0, err
	}
	return m, totalRecords, nil
}