/**
 * Normalize legacy Lorcana set_code values and scryfall_id (external id) shapes
 * so bulk import from lorcana-api.com upserts cleanly instead of inserting duplicates.
 *
 * Legacy imports used numeric set codes (1/2/3) or lowercase abbreviations (tfc/rotf/ink).
 * The bulk API uses Set_ID values TFC, ROF, INK, etc., and Unique_ID like TFC-001.
 */
export const shorthands = undefined;

export const up = (pgm) => {
  pgm.sql(`
    UPDATE cards
    SET game = 'Lorcana'
    WHERE game ILIKE 'lorcana' AND game <> 'Lorcana';

    UPDATE cards
    SET set_code = 'TFC', set_name = 'The First Chapter'
    WHERE game = 'Lorcana' AND set_code IN ('1', 'tfc', 'TFC');

    UPDATE cards
    SET set_code = 'ROF', set_name = 'Rise of the Floodborn'
    WHERE game = 'Lorcana' AND set_code IN ('2', 'rotf', 'ROF');

    UPDATE cards
    SET set_code = 'INK', set_name = 'Into the Inklands'
    WHERE game = 'Lorcana' AND set_code IN ('3', 'ink', 'INK', 'ITI');

    UPDATE cards
    SET set_code = 'TFC', set_name = 'The First Chapter'
    WHERE game = 'Lorcana'
      AND set_code IS NULL
      AND set_name ILIKE '%first chapter%';

    UPDATE cards
    SET set_code = 'ROF', set_name = 'Rise of the Floodborn'
    WHERE game = 'Lorcana'
      AND set_code IS NULL
      AND set_name ILIKE '%rise of the floodborn%';

    UPDATE cards
    SET set_code = 'INK', set_name = 'Into the Inklands'
    WHERE game = 'Lorcana'
      AND set_code IS NULL
      AND set_name ILIKE '%into the inklands%';

  `);

  // Drop legacy duplicate rows when the canonical Unique_ID row already exists.
  pgm.sql(`
    DELETE FROM cards AS dup
    WHERE dup.game = 'Lorcana'
      AND dup.set_code IS NOT NULL
      AND TRIM(dup.card_number) <> ''
      AND dup.scryfall_id IS DISTINCT FROM (
        dup.set_code || '-' || LPAD(
          REGEXP_REPLACE(TRIM(dup.card_number), '/.*$', ''),
          3,
          '0'
        )
      )
      AND EXISTS (
        SELECT 1
        FROM cards AS keeper
        WHERE keeper.scryfall_id = dup.set_code || '-' || LPAD(
          REGEXP_REPLACE(TRIM(dup.card_number), '/.*$', ''),
          3,
          '0'
        )
      );
  `);

  // Keep one row per set + collector number before scryfall_id unification.
  pgm.sql(`
    DELETE FROM cards AS dup
    WHERE dup.game = 'Lorcana'
      AND dup.set_code IS NOT NULL
      AND TRIM(dup.card_number) <> ''
      AND dup.id <> (
        SELECT MIN(peer.id)
        FROM cards AS peer
        WHERE peer.game = 'Lorcana'
          AND peer.set_code = dup.set_code
          AND REGEXP_REPLACE(TRIM(peer.card_number), '/.*$', '') = REGEXP_REPLACE(TRIM(dup.card_number), '/.*$', '')
      );
  `);

  // Unify remaining legacy scryfall_id values to Unique_ID shape (SET-NNN).
  pgm.sql(`
    UPDATE cards AS c
    SET scryfall_id = c.set_code || '-' || LPAD(
      REGEXP_REPLACE(TRIM(c.card_number), '/.*$', ''),
      3,
      '0'
    )
    WHERE c.game = 'Lorcana'
      AND c.set_code IS NOT NULL
      AND TRIM(c.card_number) <> ''
      AND c.scryfall_id IS DISTINCT FROM (
        c.set_code || '-' || LPAD(
          REGEXP_REPLACE(TRIM(c.card_number), '/.*$', ''),
          3,
          '0'
        )
      )
      AND NOT EXISTS (
        SELECT 1
        FROM cards AS other
        WHERE other.scryfall_id = c.set_code || '-' || LPAD(
          REGEXP_REPLACE(TRIM(c.card_number), '/.*$', ''),
          3,
          '0'
        )
      );
  `);
};

export const down = () => {
  throw new Error('Irreversible data migration');
};