-- Consolidate single_elimination_playoff and page_playoff → playoff_bracket
-- PostgreSQL does not support DROP VALUE on enums, so we recreate the type.

-- Step 1: Create new consolidated enum
CREATE TYPE "scoring_pattern_new" AS ENUM('playoff_bracket', 'season_standings', 'qualifying_points');

-- Step 2: Migrate column data, mapping old values to playoff_bracket
ALTER TABLE "sports_seasons"
  ALTER COLUMN "scoring_pattern" TYPE "scoring_pattern_new"
  USING (
    CASE scoring_pattern::text
      WHEN 'single_elimination_playoff' THEN 'playoff_bracket'::scoring_pattern_new
      WHEN 'page_playoff'               THEN 'playoff_bracket'::scoring_pattern_new
      ELSE scoring_pattern::text::scoring_pattern_new
    END
  );

-- Step 3: Replace old type
DROP TYPE "scoring_pattern";
ALTER TYPE "scoring_pattern_new" RENAME TO "scoring_pattern";