'use strict';

// Raw SQL for the same CockroachDB DO-block/CREATE TYPE reason as
// 20260714000002-create-completion-requirement-progress.js.
//
// Decoupled from completion_requirements entirely — tracks last-known playback
// position for ANY video/audio block, regardless of whether the lesson has a
// watch-type completion requirement configured. Powers resume-on-reopen only.

module.exports = {
  async up(queryInterface) {
    await queryInterface.sequelize.query(`
      CREATE TABLE media_playback_positions (
        position_id  UUID         PRIMARY KEY,
        user_id      BIGINT       NOT NULL REFERENCES users (user_id) ON DELETE CASCADE,
        lesson_id    BIGINT       NOT NULL REFERENCES lessons (lesson_id) ON DELETE CASCADE,
        block_id     STRING       NOT NULL,
        percent      INTEGER      NOT NULL,
        "createdAt"   TIMESTAMPTZ  NOT NULL DEFAULT CURRENT_TIMESTAMP,
        "updatedAt"   TIMESTAMPTZ  NOT NULL DEFAULT CURRENT_TIMESTAMP,
        CONSTRAINT uq_mpp_user_lesson_block UNIQUE (user_id, lesson_id, block_id)
      );
    `);

    await queryInterface.sequelize.query(
      `CREATE INDEX idx_mpp_user_lesson ON media_playback_positions (user_id, lesson_id);`
    );
  },

  async down(queryInterface) {
    await queryInterface.sequelize.query(`DROP TABLE IF EXISTS media_playback_positions;`);
  },
};