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| 1 | +package api |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + |
| 6 | + "api.audius.co/api/dbv1" |
| 7 | + "api.audius.co/trashid" |
| 8 | + "github.com/gofiber/fiber/v2" |
| 9 | + "github.com/jackc/pgx/v5" |
| 10 | +) |
| 11 | + |
| 12 | +// v1EventComments returns the top-level comment stream for a remix-contest event. |
| 13 | +// Comments are authored by any signed-in user; a comment is considered a "post |
| 14 | +// update" when its user_id matches the event's owner user_id (resolved client-side). |
| 15 | +// Replies are not returned in this list — they come back nested inside the |
| 16 | +// FullComment result just like track comments. |
| 17 | +func (app *ApiServer) v1EventComments(c *fiber.Ctx) error { |
| 18 | + encodedEventID := c.Params("eventId") |
| 19 | + eventID, err := trashid.DecodeHashId(encodedEventID) |
| 20 | + if err != nil { |
| 21 | + return fiber.NewError(fiber.StatusBadRequest, "invalid event id") |
| 22 | + } |
| 23 | + |
| 24 | + var eventRow struct { |
| 25 | + UserID int32 |
| 26 | + IsDeleted bool |
| 27 | + } |
| 28 | + err = app.pool.QueryRow(c.Context(), ` |
| 29 | + SELECT user_id, COALESCE(is_deleted, false) |
| 30 | + FROM events |
| 31 | + WHERE event_id = $1 |
| 32 | + LIMIT 1 |
| 33 | + `, eventID).Scan(&eventRow.UserID, &eventRow.IsDeleted) |
| 34 | + if err != nil { |
| 35 | + if errors.Is(err, pgx.ErrNoRows) { |
| 36 | + return fiber.NewError(fiber.StatusNotFound, "event not found") |
| 37 | + } |
| 38 | + return err |
| 39 | + } |
| 40 | + if eventRow.IsDeleted { |
| 41 | + return fiber.NewError(fiber.StatusNotFound, "event not found") |
| 42 | + } |
| 43 | + |
| 44 | + var params GetCommentsParams |
| 45 | + if err := app.ParseAndValidateQueryParams(c, ¶ms); err != nil { |
| 46 | + return err |
| 47 | + } |
| 48 | + |
| 49 | + myID := app.getMyId(c) |
| 50 | + |
| 51 | + // Pull top-level comment ids for this event, sorted and paginated the same |
| 52 | + // way track comments are. Threads are materialised below by FullComments. |
| 53 | + orderBy := `comments.created_at DESC` |
| 54 | + switch params.SortMethod { |
| 55 | + case "timestamp": |
| 56 | + orderBy = `comments.created_at ASC` |
| 57 | + case "top": |
| 58 | + orderBy = `(SELECT COUNT(*) FROM comment_reactions cr WHERE cr.comment_id = comments.comment_id) DESC, comments.created_at DESC` |
| 59 | + } |
| 60 | + |
| 61 | + sql := ` |
| 62 | + SELECT comments.comment_id |
| 63 | + FROM comments |
| 64 | + LEFT JOIN comment_threads ct ON ct.comment_id = comments.comment_id |
| 65 | + WHERE comments.entity_type = 'Event' |
| 66 | + AND comments.entity_id = @eventId |
| 67 | + AND comments.is_delete = false |
| 68 | + AND ct.parent_comment_id IS NULL |
| 69 | + ORDER BY ` + orderBy + ` |
| 70 | + LIMIT @limit |
| 71 | + OFFSET @offset |
| 72 | + ` |
| 73 | + |
| 74 | + args := pgx.NamedArgs{ |
| 75 | + "eventId": eventID, |
| 76 | + "limit": params.Limit, |
| 77 | + "offset": params.Offset, |
| 78 | + } |
| 79 | + |
| 80 | + rows, err := app.pool.Query(c.Context(), sql, args) |
| 81 | + if err != nil { |
| 82 | + return err |
| 83 | + } |
| 84 | + commentIDs, err := pgx.CollectRows(rows, pgx.RowTo[int32]) |
| 85 | + if err != nil { |
| 86 | + return err |
| 87 | + } |
| 88 | + |
| 89 | + comments, err := app.queries.FullComments(c.Context(), dbv1.GetCommentsParams{ |
| 90 | + Ids: commentIDs, |
| 91 | + MyID: myID, |
| 92 | + IncludeUnlisted: true, |
| 93 | + }) |
| 94 | + if err != nil { |
| 95 | + return err |
| 96 | + } |
| 97 | + |
| 98 | + // Collect related user ids so the UI can render avatars/handles in one shot. |
| 99 | + userIDs := []int32{eventRow.UserID} |
| 100 | + for _, co := range comments { |
| 101 | + userIDs = append(userIDs, int32(co.UserId)) |
| 102 | + for _, m := range co.Mentions { |
| 103 | + userIDs = append(userIDs, int32(m.UserId)) |
| 104 | + } |
| 105 | + for _, r := range co.Replies { |
| 106 | + userIDs = append(userIDs, int32(r.UserId)) |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + related, err := app.queries.Parallel(c.Context(), dbv1.ParallelParams{ |
| 111 | + UserIds: userIDs, |
| 112 | + TrackIds: nil, |
| 113 | + MyID: myID, |
| 114 | + AuthedWallet: app.tryGetAuthedWallet(c), |
| 115 | + }) |
| 116 | + if err != nil { |
| 117 | + return err |
| 118 | + } |
| 119 | + |
| 120 | + return c.JSON(fiber.Map{ |
| 121 | + "data": comments, |
| 122 | + "related": fiber.Map{ |
| 123 | + "users": related.UserList(), |
| 124 | + "tracks": related.TrackList(), |
| 125 | + }, |
| 126 | + "event_user_id": trashid.MustEncodeHashID(int(eventRow.UserID)), |
| 127 | + }) |
| 128 | +} |
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