package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"vote-api/api/model"
	"vote-api/global"
)

type ArticleDao struct {
}

// GetArticleById 获取数据-id
func (r *ArticleDao) GetArticleById(ArticleId int64) (m *model.Article, err error) {
	err = global.Db.First(&m, ArticleId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

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

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

// DeleteArticleById 删除-id
func (r *ArticleDao) DeleteArticleById(tx *gorm.DB, ArticleId int64) error {
	if err := tx.Delete(&model.Article{}, ArticleId).Error; err != nil {
		return err
	}
	return nil
}

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

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

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

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

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

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

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

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

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