-- Copyright (c) 2026 Probo Inc <hello@probo.com>.
--
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-- of this software and associated documentation files (the "Software"), to deal
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-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
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--
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-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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-- SOFTWARE.

ALTER TABLE cookies ADD COLUMN last_detected_at TIMESTAMPTZ NOT NULL DEFAULT now();
UPDATE cookies SET last_detected_at = created_at;
ALTER TABLE cookies ALTER COLUMN last_detected_at DROP DEFAULT;

ALTER TABLE cookie_patterns ADD COLUMN last_matched_at TIMESTAMPTZ;
UPDATE cookie_patterns SET last_matched_at = sub.max_detected
FROM (
    SELECT cookie_pattern_id, MAX(last_detected_at) AS max_detected
    FROM cookies
    GROUP BY cookie_pattern_id
) sub
WHERE cookie_patterns.id = sub.cookie_pattern_id;