feat(uploads): match release groups with MusicBrainz and AcoustID

services/api/migrations/00025_upload_release_lookup.sql

@@ -0,0 +1,58 @@
+-- +goose Up
+CREATE TABLE metadata_lookup_cache (
+  cache_key text PRIMARY KEY,
+  payload bytea NOT NULL,
+  expires_at timestamptz NOT NULL
+);
+CREATE INDEX metadata_lookup_cache_expiry ON metadata_lookup_cache(expires_at);
+CREATE TABLE upload_release_groups (
+  id uuid PRIMARY KEY,
+  batch_id uuid NOT NULL REFERENCES upload_batches(id) ON DELETE CASCADE,
+  grouping_key text NOT NULL,
+  artist text NOT NULL DEFAULT '',
+  album text NOT NULL DEFAULT '',
+  cover_path text,
+  UNIQUE(batch_id,grouping_key)
+);
+ALTER TABLE upload_files ADD COLUMN release_group_id uuid REFERENCES upload_release_groups(id) ON DELETE SET NULL;
+CREATE INDEX upload_files_release_group ON upload_files(release_group_id);
+CREATE TABLE upload_release_jobs (
+  batch_id uuid NOT NULL REFERENCES upload_batches(id) ON DELETE CASCADE,
+  group_key text NOT NULL DEFAULT '',
+  state text NOT NULL DEFAULT 'queued' CHECK (state IN ('queued','searching','ready','not_found','needs_input','error')),
+  request jsonb NOT NULL DEFAULT '{}',
+  input_hash text NOT NULL DEFAULT '',
+  candidates jsonb NOT NULL DEFAULT '[]',
+  audio_results jsonb NOT NULL DEFAULT '[]',
+  selected_release uuid,
+  lease uuid,
+  attempts int NOT NULL DEFAULT 0,
+  updated_at timestamptz NOT NULL DEFAULT now(),
+  PRIMARY KEY(batch_id,group_key)
+);
+-- +goose StatementBegin
+CREATE FUNCTION queue_upload_release_lookup() RETURNS trigger LANGUAGE plpgsql AS $$
+BEGIN
+  IF NEW.status IN ('pending_review','import_failed','withdrawn') AND
+     (OLD.status IS DISTINCT FROM NEW.status OR OLD.metadata IS DISTINCT FROM NEW.metadata OR
+      OLD.tags IS DISTINCT FROM NEW.tags OR OLD.duration_ms IS DISTINCT FROM NEW.duration_ms) THEN
+    INSERT INTO upload_release_jobs(batch_id,group_key) VALUES (NEW.batch_id,coalesce(NEW.release_group_id::text,''))
+    ON CONFLICT (batch_id,group_key) DO UPDATE SET state='queued', request='{}', audio_results='[]', lease=NULL, attempts=0,
+      selected_release=NULL, updated_at=now();
+  END IF;
+  RETURN NEW;
+END;
+$$;
+-- +goose StatementEnd
+CREATE TRIGGER upload_release_lookup_changed AFTER UPDATE OF status, metadata, tags, duration_ms ON upload_files
+  FOR EACH ROW EXECUTE FUNCTION queue_upload_release_lookup();
+INSERT INTO upload_release_jobs(batch_id)
+  SELECT DISTINCT batch_id FROM upload_files WHERE status IN ('pending_review','import_failed');
+
+-- +goose Down
+DROP TRIGGER upload_release_lookup_changed ON upload_files;
+DROP FUNCTION queue_upload_release_lookup();
+DROP TABLE upload_release_jobs;
+ALTER TABLE upload_files DROP COLUMN release_group_id;
+DROP TABLE upload_release_groups;
+DROP TABLE metadata_lookup_cache;