-- v0.703: Go Live — scheduled_at, stream_url, is_vod, stream_key NOT NULL
ALTER TABLE live_streams
    ADD COLUMN IF NOT EXISTS scheduled_at TIMESTAMPTZ,
    ADD COLUMN IF NOT EXISTS stream_url TEXT DEFAULT '',
    ADD COLUMN IF NOT EXISTS is_vod BOOLEAN NOT NULL DEFAULT false;

UPDATE live_streams SET stream_key = gen_random_uuid()::text
    WHERE stream_key = '' OR stream_key IS NULL;

ALTER TABLE live_streams ALTER COLUMN stream_key SET NOT NULL;
ALTER TABLE live_streams ALTER COLUMN stream_key SET DEFAULT gen_random_uuid()::text;

CREATE INDEX IF NOT EXISTS idx_live_streams_user_id ON live_streams(user_id);
CREATE INDEX IF NOT EXISTS idx_live_streams_is_live ON live_streams(is_live) WHERE is_live = true;
CREATE INDEX IF NOT EXISTS idx_live_streams_scheduled ON live_streams(scheduled_at)
    WHERE scheduled_at IS NOT NULL;