bvandeusen
1226cb7583
Migration 0014 adds playlists + playlist_tracks. track_id is nullable with ON DELETE SET NULL — tracks can be removed from the library without silently dropping playlist entries; the denormalized snapshot (title/artist/album/duration) keeps the row legible afterwards. UI renders such rows greyed-out. Indexes: playlists by (user_id, updated_at DESC) and a partial public index for cross-user discovery; playlist_tracks partial index on track_id to support the FK SET NULL lookup. Queries provide CRUD + rollup recompute (track_count, duration_sec) + append/remove primitives. Reorder is service-layer orchestrated via raw tx.Exec; no SQL primitive needed.
40 lines
1.8 KiB
SQL
40 lines
1.8 KiB
SQL
-- M7 #352 slice 1: playlists CRUD foundation.
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-- See docs/superpowers/specs/2026-05-03-m7-playlists-crud-design.md.
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CREATE TABLE playlists (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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name text NOT NULL,
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description text NOT NULL DEFAULT '',
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is_public boolean NOT NULL DEFAULT false,
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cover_path text,
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track_count integer NOT NULL DEFAULT 0,
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duration_sec integer NOT NULL DEFAULT 0,
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created_at timestamptz NOT NULL DEFAULT now(),
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updated_at timestamptz NOT NULL DEFAULT now()
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);
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CREATE INDEX playlists_user_idx ON playlists (user_id, updated_at DESC);
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CREATE INDEX playlists_public_idx ON playlists (is_public, updated_at DESC) WHERE is_public;
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-- track_id is nullable + ON DELETE SET NULL so deleting a track from
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-- the library doesn't silently drop entries from operators' playlists.
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-- Denormalized title/artist/album/duration carry a snapshot so the row
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-- is still legible after the upstream track row is gone.
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CREATE TABLE playlist_tracks (
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playlist_id uuid NOT NULL REFERENCES playlists(id) ON DELETE CASCADE,
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position integer NOT NULL,
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track_id uuid REFERENCES tracks(id) ON DELETE SET NULL,
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title text NOT NULL,
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artist_name text NOT NULL,
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album_title text NOT NULL,
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duration_sec integer NOT NULL,
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added_at timestamptz NOT NULL DEFAULT now(),
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PRIMARY KEY (playlist_id, position)
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);
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-- Partial index supports the FK lookup that fires when a track is
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-- deleted (ON DELETE SET NULL) — without it, deleting a track triggers
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-- a full scan of playlist_tracks.
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CREATE INDEX playlist_tracks_track_idx ON playlist_tracks (track_id) WHERE track_id IS NOT NULL;
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