/**
 * Create tables for Scryfall Tagger community tags (oracle + art).
 * Tags join to cards via oracle_id (oracle tags) or illustration_id (art tags).
 */
export const shorthands = undefined;

export const up = (pgm) => {
  pgm.createTable('tags', {
    id: { type: 'uuid', primaryKey: true },
    slug: { type: 'varchar(255)', notNull: true },
    label: { type: 'varchar(255)', notNull: true },
    type: { type: 'varchar(20)', notNull: true, comment: 'oracle or illustration' },
    description: { type: 'text' },
    parent_ids: { type: 'jsonb' },
    child_ids: { type: 'jsonb' },
    aliases: { type: 'jsonb' },
    created_at: { type: 'timestamp', default: pgm.func('CURRENT_TIMESTAMP') },
    updated_at: { type: 'timestamp', default: pgm.func('CURRENT_TIMESTAMP') },
  });

  pgm.createIndex('tags', 'type');
  pgm.createIndex('tags', 'slug');
  pgm.createIndex('tags', 'label');

  pgm.createTable('card_tags', {
    id: { type: 'serial', primaryKey: true },
    tag_id: { type: 'uuid', notNull: true, references: 'tags(id)', onDelete: 'CASCADE' },
    card_id: { type: 'integer', references: 'cards(id)', onDelete: 'CASCADE' },
    oracle_id: { type: 'varchar(36)', comment: 'For oracle tags — matches cards.oracle_id' },
    illustration_id: { type: 'varchar(36)', comment: 'For art tags — matches cards.illustration_id' },
    weight: { type: 'varchar(20)', default: 'median' },
    annotation: { type: 'text' },
    created_at: { type: 'timestamp', default: pgm.func('CURRENT_TIMESTAMP') },
  });

  pgm.createIndex('card_tags', 'tag_id');
  pgm.createIndex('card_tags', 'card_id');
  pgm.createIndex('card_tags', 'oracle_id');
  pgm.createIndex('card_tags', 'illustration_id');
  pgm.addConstraint('card_tags', 'card_tags_unique_tag_oracle', {
    unique: ['tag_id', 'oracle_id'],
    where: 'oracle_id IS NOT NULL',
  });
  pgm.addConstraint('card_tags', 'card_tags_unique_tag_illustration', {
    unique: ['tag_id', 'illustration_id'],
    where: 'illustration_id IS NOT NULL',
  });
};

export const down = (pgm) => {
  pgm.dropTable('card_tags');
  pgm.dropTable('tags');
};