package dao

import (
	"errors"
	"fmt"
	"yintai-api/app/common/model"

	"gorm.io/gorm"
)

type Category struct {
	db *gorm.DB
}

func NewCategory(db ...*gorm.DB) *Category {
	return &Category{db: getDB(db...)}
}

func (r *Category) TableName() string {
	return "yt_category"
}

func (r *Category) Create(m *model.Category) error {
	return r.db.Table(r.TableName()).Create(m).Error
}

func (r *Category) Update(m *model.Category) error {
	return r.db.Table(r.TableName()).Save(m).Error
}

func (r *Category) Delete(path string) error {
	return r.db.Table(r.TableName()).Where("path LIKE ?", fmt.Sprintf("%s%%", path)).Delete(&model.Category{}).Error
}

func (r *Category) Get(id int64) (*model.Category, error) {
	var res model.Category
	if err := r.db.Table(r.TableName()).Where("id = ?", id).First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &res, nil
}

func (r *Category) GetWithType(id int64, t string) (*model.Category, error) {
	var res model.Category
	if err := r.db.Table(r.TableName()).Where("id = ? AND type = ?", id, t).First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}
	return &res, nil
}

func (r *Category) Exists(id int64) (bool, error) {
	var count int64
	if err := r.db.Table(r.TableName()).Where("id = ?", id).Count(&count).Error; err != nil {
		return false, err
	}
	return count > 0, nil
}

func (r *Category) GetByPath(path string) ([]*model.Category, error) {
	var res []*model.Category
	if err := r.db.Table(r.TableName()).Where("path LIKE ?", fmt.Sprintf("%s%%", path)).Find(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}

	return res, nil

}

func (r *Category) List(pid int64, name, nameEn, types string, page, size int, sort string) ([]*model.Category, int64, error) {
	var req []*model.Category
	var count int64
	tx := r.db.Table(r.TableName()).Where("type = ?", types)
	if pid != 0 {
		tx = tx.Where("pid = ?", pid)
	}

	if name != "" {
		tx = tx.Where("name LIKE ?", fmt.Sprintf("%%%s%%", name))
	}

	if nameEn != "" {
		tx = tx.Where("name_en LIKE ?", fmt.Sprintf("%%%s%%", nameEn))
	}

	if sort != "" {
		tx = tx.Order(sort)
	} else {
		tx = tx.Order("create_time desc")
	}

	if err := tx.Count(&count).Error; err != nil {
		return nil, 0, err
	}

	if err := tx.Offset((page - 1) * size).Limit(size).Find(&req).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, 0, nil
		}
		return nil, 0, err
	}

	return req, count, nil
}

func (c *Category) GetByBiz(BizID int64, BizType string) (*model.Category, error) {
	var res model.Category
	tx := c.db.Table(c.TableName() + " c ").Joins(fmt.Sprintf(" LEFT JON %s r ON c.id = r.cateory_id", NewCategoryRelation().TableName()))
	tx = tx.Where("r.biz_id = ? AND c.type = ?", BizID, BizType)

	if err := tx.First(&res).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, nil
		}
		return nil, err
	}

	return &res, nil
}

func (c *Category) GetByIds(ids ...int64) (map[int64]*model.Category, error) {
	resMap := make(map[int64]*model.Category)
	var res []*model.Category
	if len(ids) > 0 {
		tx := c.db.Table(c.TableName()).Where("id IN (?)", ids).Find(&res)
		if tx.Error != nil {
			if errors.Is(tx.Error, gorm.ErrRecordNotFound) {
				return resMap, nil
			}

			return resMap, tx.Error
		}
	}

	for _, re := range res {
		resMap[re.ID] = re
	}

	return resMap, nil
}