64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package logic
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import (
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"context"
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"spark-server/internal/module/moment/entity"
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"spark-server/internal/pkg/errs"
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)
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func (s *Service) Album(ctx context.Context, viewerID, ownerID, cursor int64, limit int) (*ListResult, error) {
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if !s.ready() || viewerID <= 0 {
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return nil, errs.ErrUnauthorized
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}
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if ownerID <= 0 {
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return nil, errs.ErrInvalidArgument
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}
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if ownerID != viewerID {
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ok, err := s.friends.AreFriends(ctx, viewerID, ownerID)
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if err != nil {
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return nil, err
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}
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if !ok {
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return nil, errs.ErrNotFound
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}
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blocked, err := s.friends.BlockedEither(ctx, viewerID, ownerID)
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if err != nil {
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return nil, err
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}
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if blocked {
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return nil, errs.ErrNotFound
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}
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}
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limit = entity.ClampLimit(limit)
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picked := make([]*entity.Post, 0, limit)
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self := ownerID == viewerID
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for range entity.OverfetchRounds {
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batch, err := s.repo.ListByAuthor(ctx, ownerID, cursor, entity.Overfetch)
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if err != nil {
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return nil, err
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}
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if len(batch) == 0 {
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break
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}
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vis, err := s.visFor(ctx, viewerID, batch, self)
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if err != nil {
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return nil, err
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}
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for _, p := range batch {
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cursor = p.ID
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if !vis.canSee(p) {
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continue
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}
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picked = append(picked, p)
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if len(picked) >= limit {
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break
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}
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}
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if len(picked) >= limit || len(batch) < entity.Overfetch {
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break
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}
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}
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return s.listResult(ctx, viewerID, picked, false)
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}
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