hyungi_document_server/migrations/303_eid_weekly_recap.sql

-- 303_eid_weekly_recap.sql
-- 이드 주간 회고 카드 (append-only derived-fact). 회고 워커(scaffold, 미배선 — W4/Phase2)가 산출.
-- recap overlay: 'T1 write 자율 eid_weekly_recap(append-only)'. 미결 액션아이템 open/done UPDATE 는
-- events 측(가변)이지 이 카드가 아님 — 카드 자체는 불변 스냅샷.
-- 현재는 통합 migration 의 scaffold 테이블(dispatch enum WRITE_WEEKLY_RECAP 의 write target 예약).
--
-- append-only 구조강제(=301 동일): 스탬프 NOT NULL no-default + RULE(불변). '현재' = 최신 created_at.

CREATE TABLE IF NOT EXISTS eid_weekly_recap (
    id                   BIGSERIAL   PRIMARY KEY,
    user_id              BIGINT      NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    period_start         DATE        NOT NULL,
    period_end           DATE        NOT NULL,
    recap                JSONB       NOT NULL,   -- {activity_summary, open_action_items:[event_id], recurring_topics}
    trend_label          VARCHAR(20),
    status               VARCHAR(20) NOT NULL DEFAULT 'active',  -- 'active' | 'disputed'
    supersedes_id        BIGINT      REFERENCES eid_weekly_recap(id) ON DELETE SET NULL,
    actor                VARCHAR(20) NOT NULL,   -- 스탬프 = 'eid'
    source_generated_at  TIMESTAMPTZ NOT NULL,   -- 스탬프
    created_at           TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE OR REPLACE RULE eid_weekly_recap_no_update AS ON UPDATE TO eid_weekly_recap DO INSTEAD NOTHING;
CREATE OR REPLACE RULE eid_weekly_recap_no_delete AS ON DELETE TO eid_weekly_recap DO INSTEAD NOTHING;

CREATE INDEX IF NOT EXISTS idx_eid_recap_user_current
    ON eid_weekly_recap (user_id, created_at DESC) WHERE status = 'active';