package dao

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

type CaseDao struct {
}

// GetCaseById 获取数据-id
func (r *CaseDao) GetCaseById(caseId int64) (m *model.Case, err error) {
	err = global.Db.First(&m, caseId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

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

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

// DeleteCaseById 删除-id
func (r *CaseDao) DeleteCaseById(tx *gorm.DB, caseId int64) error {
	if err := tx.Delete(&model.Case{}, caseId).Error; err != nil {
		return err
	}
	return nil
}

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

// EditCaseById 修改-id
func (r *CaseDao) EditCaseById(tx *gorm.DB, caseId int64, data interface{}) error {
	err := tx.Model(&model.Case{}).Where("case_id = ?", caseId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

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

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

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

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

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

// GetCasePageSearch 获取列表-分页
func (r *CaseDao) GetCasePageSearch(req requests.GetCasePage, page, pageSize int) (m []*model.Case, total int64, err error) {
	var totalRecords int64

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

	query = query.Where("project_id = ?", req.ProjectId)

	// 状态（1:正常 2:禁用）
	if req.CaseStatus != nil {
		query = query.Where("case_status = ?", req.CaseStatus)
	}

	// 搜索关键字
	if req.Keyword != "" {
		keyword := "%" + req.Keyword + "%" //

		// 病例名称
		orQuery := global.Db.Model(&model.Case{}).Or("case_name LIKE ?", keyword)

		// 作者
		orQuery = orQuery.Or("case_author LIKE ?", keyword)

		// 执行
		query = query.Where(orQuery)
	}

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

		if req.Order.JoinNum != "" {
			query = query.Order("join_num " + req.Order.JoinNum)
		}

		if req.Order.JoinWhiteNum != "" {
			query = query.Order("join_white_num " + req.Order.JoinWhiteNum)
		}

		if req.Order.MessageNum != "" {
			query = query.Order("message_num " + req.Order.MessageNum)
		}
	}

	// 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
}

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

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