// Word-level speech-to-text transcripts from narration_combined.transcript.json.
// Stored as a jsonb array [{word, start, end}] per source to avoid millions of tiny rows.
exports.up = (pgm) => {
  pgm.createTable('transcripts', {
    id:          'id',
    project_id:  { type: 'integer', notNull: true, references: 'videos', onDelete: 'CASCADE' },
    source_name: { type: 'varchar(100)', notNull: true },  // narration_combined | talkinghead
    words:       { type: 'jsonb', notNull: true },          // [{word, start, end}, ...]
    created_at:  { type: 'timestamptz', notNull: true, default: pgm.func('NOW()') },
    updated_at:  { type: 'timestamptz', notNull: true, default: pgm.func('NOW()') },
  });
  pgm.addConstraint('transcripts', 'transcripts_project_source_unique',
    'UNIQUE (project_id, source_name)');
};

exports.down = (pgm) => { pgm.dropTable('transcripts'); };