package column

import (
	"cls-server/internal/domain/column"
	"cls-server/pkg/logger"
	"cls-server/pkg/util/page"
	"cls-server/pkg/web"
	"errors"
)

var (
	ErrInvalidTitle = errors.New("标题不能为空")
	ErrNotFound     = errors.New("专栏不存在")
	ErrInvalidPage  = errors.New("无效的分页参数")
)

// Service 专栏应用服务
type Service struct {
	repo column.ColumnRepository
	log  logger.Logger
}

// NewService 创建专栏服务
func NewService(repo column.ColumnRepository, log logger.New) *Service {
	return &Service{
		repo: repo,
		log:  log("cls:service:column"),
	}
}

// GetColumnList 获取专栏列表
func (s *Service) GetColumnList(p *page.Page, params map[string]string) error {
	conds := web.ParseFilters(params)
	cols := make([]*column.Column, 0)
	p.Content = &cols
	if err := s.repo.FindAll(p, conds); err != nil {
		s.log.Error("failed to find columns", "error", err)
		return err
	}

	p.Content = ToDtoList(cols)
	return nil
}

func (s *Service) UpdateColumn(dto *ColumnDto) error {
	columnData := &column.Column{
		ID:          dto.ID,
		Title:       dto.Title,
		Brief:       dto.Brief,
		FollowNum:   dto.FollowNum,
		PurchaseNum: dto.PurchaseNum,
	}
	err := s.repo.Update(columnData)
	if err != nil {
		s.log.Error(err)
	}
	return err
}