onasty/internal/service/notesrv/notesrv.go (view raw)
Smirnov Oleksandr
Smirnov Oleksandr
ss2316544@gmail.com feat: keep metadate on note removal (#96)..., 1 year ago
ss2316544@gmail.com feat: keep metadate on note removal (#96)..., 1 year ago
| 1 | package notesrv |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "log/slog" |
| 6 | "time" |
| 7 | |
| 8 | "github.com/gofrs/uuid/v5" |
| 9 | "github.com/olexsmir/onasty/internal/dtos" |
| 10 | "github.com/olexsmir/onasty/internal/hasher" |
| 11 | "github.com/olexsmir/onasty/internal/models" |
| 12 | "github.com/olexsmir/onasty/internal/store/psql/noterepo" |
| 13 | "github.com/olexsmir/onasty/internal/store/rdb/notecache" |
| 14 | ) |
| 15 | |
| 16 | type NoteServicer interface { |
| 17 | // Create creates note |
| 18 | // if slug is empty it will be generated, otherwise used as is |
| 19 | // if userID is empty it means user isn't authorized so it will be used |
| 20 | Create(ctx context.Context, note dtos.CreateNoteDTO, userID uuid.UUID) (dtos.NoteSlugDTO, error) |
| 21 | |
| 22 | // GetBySlugAndRemoveIfNeeded returns note by slug, and removes if if needed |
| 23 | GetBySlugAndRemoveIfNeeded(ctx context.Context, input GetNoteBySlugInput) (dtos.NoteDTO, error) |
| 24 | } |
| 25 | |
| 26 | var _ NoteServicer = (*NoteSrv)(nil) |
| 27 | |
| 28 | type NoteSrv struct { |
| 29 | noterepo noterepo.NoteStorer |
| 30 | hasher hasher.Hasher |
| 31 | cache notecache.NoteCacher |
| 32 | } |
| 33 | |
| 34 | func New(noterepo noterepo.NoteStorer, hasher hasher.Hasher, cache notecache.NoteCacher) *NoteSrv { |
| 35 | return &NoteSrv{ |
| 36 | noterepo: noterepo, |
| 37 | hasher: hasher, |
| 38 | cache: cache, |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | func (n *NoteSrv) Create( |
| 43 | ctx context.Context, |
| 44 | inp dtos.CreateNoteDTO, |
| 45 | userID uuid.UUID, |
| 46 | ) (dtos.NoteSlugDTO, error) { |
| 47 | slog.DebugContext(ctx, "creating", "inp", inp) |
| 48 | |
| 49 | if inp.Slug == "" { |
| 50 | inp.Slug = uuid.Must(uuid.NewV4()).String() |
| 51 | } |
| 52 | |
| 53 | if inp.Password != "" { |
| 54 | hashedPassword, err := n.hasher.Hash(inp.Password) |
| 55 | if err != nil { |
| 56 | return "", err |
| 57 | } |
| 58 | inp.Password = hashedPassword |
| 59 | } |
| 60 | |
| 61 | if err := n.noterepo.Create(ctx, inp); err != nil { |
| 62 | return "", err |
| 63 | } |
| 64 | |
| 65 | if !userID.IsNil() { |
| 66 | if err := n.noterepo.SetAuthorIDBySlug(ctx, inp.Slug, userID); err != nil { |
| 67 | return "", err |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | return inp.Slug, nil |
| 72 | } |
| 73 | |
| 74 | func (n *NoteSrv) GetBySlugAndRemoveIfNeeded( |
| 75 | ctx context.Context, |
| 76 | inp GetNoteBySlugInput, |
| 77 | ) (dtos.NoteDTO, error) { |
| 78 | note, err := n.getNote(ctx, inp) |
| 79 | if err != nil { |
| 80 | return dtos.NoteDTO{}, err |
| 81 | } |
| 82 | |
| 83 | m := models.Note{ //nolint:exhaustruct |
| 84 | ExpiresAt: note.ExpiresAt, |
| 85 | BurnBeforeExpiration: note.BurnBeforeExpiration, |
| 86 | } |
| 87 | |
| 88 | if m.IsExpired() { |
| 89 | return dtos.NoteDTO{}, models.ErrNoteExpired |
| 90 | } |
| 91 | |
| 92 | // since not every note should be burn before expiration |
| 93 | // we return early if it's not |
| 94 | if m.ShouldBeBurnt() { |
| 95 | return note, nil |
| 96 | } |
| 97 | |
| 98 | return note, n.noterepo.RemoveBySlug(ctx, inp.Slug, time.Now()) |
| 99 | } |
| 100 | |
| 101 | func (n *NoteSrv) getNote(ctx context.Context, inp GetNoteBySlugInput) (dtos.NoteDTO, error) { |
| 102 | if r, err := n.cache.GetNote(ctx, inp.Slug); err == nil { |
| 103 | return r, nil |
| 104 | } |
| 105 | |
| 106 | note, err := n.getNoteFromDBasedOnInput(ctx, inp) |
| 107 | if err != nil { |
| 108 | return dtos.NoteDTO{}, err |
| 109 | } |
| 110 | |
| 111 | if note.ReadAt != nil && !note.ReadAt.IsZero() { |
| 112 | if err = n.cache.SetNote(ctx, inp.Slug, note); err != nil { |
| 113 | slog.ErrorContext(ctx, "notecache", "err", err) |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | return note, err |
| 118 | } |
| 119 | |
| 120 | func (n *NoteSrv) getNoteFromDBasedOnInput( |
| 121 | ctx context.Context, |
| 122 | inp GetNoteBySlugInput, |
| 123 | ) (dtos.NoteDTO, error) { |
| 124 | if inp.HasPassword() { |
| 125 | hashedPassword, err := n.hasher.Hash(inp.Password) |
| 126 | if err != nil { |
| 127 | return dtos.NoteDTO{}, err |
| 128 | } |
| 129 | |
| 130 | return n.noterepo.GetBySlugAndPassword(ctx, inp.Slug, hashedPassword) |
| 131 | } |
| 132 | return n.noterepo.GetBySlug(ctx, inp.Slug) |
| 133 | } |