102 lines
2.3 KiB
Go
102 lines
2.3 KiB
Go
package announcement
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import (
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"context"
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"errors"
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"gorm.io/gorm"
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)
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type Service struct {
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repo *Repository
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}
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func NewService(repo *Repository) *Service {
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return &Service{repo: repo}
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}
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var (
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ErrNotFound = errors.New("公告不存在")
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ErrInvalidRequest = errors.New("请求参数不正确")
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ErrUnauthorized = errors.New("未授权")
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)
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// List 获取公告列表（前台用户）
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func (s *Service) List(ctx context.Context, query AnnouncementListQuery) (*PaginatedResult, error) {
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if query.Page < 1 {
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query.Page = 1
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}
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if query.PageSize < 1 {
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query.PageSize = 20
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}
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if query.PageSize > 100 {
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query.PageSize = 100
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}
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return s.repo.List(ctx, query)
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}
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// GetByID 获取公告详情
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func (s *Service) GetByID(ctx context.Context, id uint64) (*AnnouncementDTO, error) {
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dto, err := s.repo.GetByID(ctx, id)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrNotFound
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}
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return nil, err
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}
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return dto, nil
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}
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// AdminList 管理员获取公告列表
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func (s *Service) AdminList(ctx context.Context, query AnnouncementListQuery) (*PaginatedResult, error) {
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if query.Page < 1 {
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query.Page = 1
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}
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if query.PageSize < 1 {
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query.PageSize = 20
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}
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if query.PageSize > 100 {
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query.PageSize = 100
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}
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return s.repo.AdminList(ctx, query)
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}
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// AdminGetByID 管理员获取公告详情
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func (s *Service) AdminGetByID(ctx context.Context, id uint64) (*AnnouncementDTO, error) {
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dto, err := s.repo.AdminGetByID(ctx, id)
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrNotFound
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}
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return nil, err
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}
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return dto, nil
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}
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// Create 创建公告
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func (s *Service) Create(ctx context.Context, req CreateAnnouncementRequest, createdBy uint64) (*AnnouncementDTO, error) {
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return s.repo.Create(ctx, req, createdBy)
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}
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// Update 更新公告
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func (s *Service) Update(ctx context.Context, id uint64, req UpdateAnnouncementRequest) (*AnnouncementDTO, error) {
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return s.repo.Update(ctx, id, req)
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}
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// Publish 发布公告
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func (s *Service) Publish(ctx context.Context, id uint64) error {
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return s.repo.Publish(ctx, id)
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}
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// Archive 归档公告
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func (s *Service) Archive(ctx context.Context, id uint64) error {
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return s.repo.Archive(ctx, id)
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}
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// Delete 删除公告
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func (s *Service) Delete(ctx context.Context, id uint64) error {
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return s.repo.Delete(ctx, id)
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}
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