'use strict';

// Supports the new advertisement creation wizard:
//   - content_mode: "image" (image only) vs "content" (badge/headline/
//     description/CTAs alongside the image) — an explicit admin choice,
//     decoupled from placement/format. Added as STRING + an explicit CHECK
//     constraint (addColumn can't create a native enum type on this
//     CockroachDB instance, unlike createTable) — matching the pattern used
//     in 20260710000001-add-status-to-courses.js. The Sequelize model still
//     declares it as DataTypes.ENUM for app-level validation; the column
//     itself is a plain string.
//   - redirect_link: where the ad as a whole links to when clicked with no
//     CTA of its own (banners/full-image ads have no CTA row).
//   - landing_page: when no redirect_link is given, an internally-authored
//     landing page (title/description/body/links) the ad's own click-through
//     resolves to instead (see GET /api/client/advertisements/uuid/:uuid and
//     the /ads/:uuid client route).
module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.addColumn('advertisements', 'content_mode', {
      type: Sequelize.STRING,
      allowNull: false,
      defaultValue: 'image',
    });
    await queryInterface.sequelize.query(`
      ALTER TABLE advertisements ADD CONSTRAINT check_content_mode
      CHECK (content_mode IN ('image', 'content'))
    `);

    await queryInterface.addColumn('advertisements', 'redirect_link', {
      type: Sequelize.STRING(512),
      allowNull: true,
    });

    await queryInterface.addColumn('advertisements', 'landing_page', {
      type: Sequelize.JSONB,
      allowNull: true,
    });

    // Existing rows already have real content (headline/description/ctas) —
    // treat them as "content" mode rather than defaulting to "image".
    await queryInterface.sequelize.query(`
      UPDATE advertisements
      SET content_mode = 'content'
      WHERE headline IS NOT NULL AND headline <> ''
    `);
  },

  async down(queryInterface) {
    await queryInterface.removeColumn('advertisements', 'landing_page');
    await queryInterface.removeColumn('advertisements', 'redirect_link');
    await queryInterface.sequelize.query(`ALTER TABLE advertisements DROP CONSTRAINT IF EXISTS check_content_mode`);
    await queryInterface.removeColumn('advertisements', 'content_mode');
  },
};