88 lines
2.0 KiB
Go
88 lines
2.0 KiB
Go
package service
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import (
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"context"
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"server/internal/db"
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"server/internal/db/sqlc"
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"server/internal/model/common"
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"server/internal/model/request"
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"server/internal/pkg/dberr"
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"server/internal/pkg/errs"
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)
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type TagService struct {
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store *db.Store
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}
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func NewTagService(store *db.Store) *TagService {
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return &TagService{
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store: store,
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}
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}
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func (s *TagService) ListPage(ctx context.Context, p *common.Pagination) ([]sqlc.Tag, int64, error) {
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params := sqlc.ListTagsParams{
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Limit: p.PageSize,
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Offset: (p.Page - 1) * p.PageSize,
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}
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total, err := s.store.CountTags(ctx)
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if err != nil {
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return nil, 0, err
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}
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list, err := s.store.ListTags(ctx, params)
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if err != nil {
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return nil, 0, err
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}
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return list, total, nil
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}
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func (s *TagService) ListAll(ctx context.Context) ([]sqlc.Tag, error) {
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return s.store.ListAllTags(ctx)
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}
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func (s *TagService) Create(ctx context.Context, req request.CreateTagRequest) error {
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params := sqlc.CreateTagParams{
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Name: req.Name,
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Code: req.Code,
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Sort: req.Sort,
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}
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err := s.store.CreateTag(ctx, params)
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return dberr.MapUniqueViolation(err, dberr.TagCodeKey, errs.ErrTagCodeAlreadyExists)
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}
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func (s *TagService) Update(ctx context.Context, id int32, req request.UpdateTagRequest) error {
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params := sqlc.UpdateTagParams{
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ID: id,
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Name: req.Name,
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Code: req.Code,
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Sort: req.Sort,
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}
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rows, err := s.store.UpdateTag(ctx, params)
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// 先判断数据条目是否存在
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if err = dberr.MapRowsAffected(rows, err, errs.ErrTagNotFound); err != nil {
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// 再判断code是否重复
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return dberr.MapUniqueViolation(err, dberr.TagCodeKey, errs.ErrTagCodeAlreadyExists)
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}
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return nil
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}
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func (s *TagService) Delete(ctx context.Context, id int32) error {
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return s.store.WithTx(ctx, func(q *sqlc.Queries) error {
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// 删除中间表数据
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err := s.store.DeletePostTagByTagID(ctx, id)
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if err != nil {
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return err
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}
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// 删除标签数据
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rows, err := s.store.DeleteTag(ctx, id)
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return dberr.MapRowsAffected(rows, err, errs.ErrTagNotFound)
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})
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}
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