-- Add chapters support to products table (for webinars)
ALTER TABLE products
  ADD COLUMN IF NOT EXISTS chapters JSONB DEFAULT '[]';

-- Add chapters support to bootcamp_lessons table
ALTER TABLE bootcamp_lessons
  ADD COLUMN IF NOT EXISTS chapters JSONB DEFAULT '[]';

-- Add comments for documentation
COMMENT ON COLUMN products.chapters IS 'Video chapters/timeline markers stored as JSON array of {time: number, title: string}';
COMMENT ON COLUMN bootcamp_lessons.chapters IS 'Video chapters/timeline markers stored as JSON array of {time: number, title: string}';

-- Create index for faster queries on products with chapters
CREATE INDEX IF NOT EXISTS idx_products_has_chapters ON products ((jsonb_array_length(chapters) > 0));

-- Create index for faster queries on lessons with chapters
CREATE INDEX IF NOT EXISTS idx_bootcamp_lessons_has_chapters ON bootcamp_lessons ((jsonb_array_length(chapters) > 0));