-- =============================================================================
-- Vignette · migration 24 — 학습자·교수자용 속마음 요약 (jev-client-affect-v2 §8.2)
-- =============================================================================
-- app.client_affect_trace(23)는 관리자 전용이다. 이 테이블은 같은 client 턴에
-- 학습자·교수자에게 노출 가능한 고정 문구 요약만 담는다(숫자·확률·영문 코드 없음).
-- 앱 런타임은 client turn INSERT · client_affect_trace INSERT와 같은 트랜잭션에
-- 이 테이블 INSERT를 둔다.

CREATE TABLE IF NOT EXISTS app.client_inner_reaction (
  turn_id UUID PRIMARY KEY REFERENCES app.turns(id) ON DELETE CASCADE,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE CASCADE,
  reaction JSONB NOT NULL,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_client_inner_reaction_session_created
  ON app.client_inner_reaction (session_id, created_at);

ALTER TABLE app.client_inner_reaction ENABLE ROW LEVEL SECURITY;

DROP POLICY IF EXISTS p_client_inner_reaction_select ON app.client_inner_reaction;
DROP POLICY IF EXISTS p_client_inner_reaction_insert_learner ON app.client_inner_reaction;

-- AI 경로(app.is_ai_context())는 절대 읽지 못한다: 속마음 문구가 프롬프트로
-- 역류하면 v2가 막으려는 겉과 속 차이 설계를 스스로 깨뜨린다.
CREATE POLICY p_client_inner_reaction_select
  ON app.client_inner_reaction FOR SELECT
  USING (
    NOT app.is_ai_context()
    AND EXISTS (
      SELECT 1 FROM app.sessions AS s
      WHERE s.id = app.client_inner_reaction.session_id
    )
    AND (
      app.current_role_name() IN ('admin', 'instructor')
      OR EXISTS (
        SELECT 1 FROM app.sessions AS s
        WHERE s.id = app.client_inner_reaction.session_id
          AND s.learner_id = app.current_uid()
      )
    )
  );

CREATE POLICY p_client_inner_reaction_insert_learner
  ON app.client_inner_reaction FOR INSERT
  WITH CHECK (
    app.current_role_name() = 'learner'
    AND EXISTS (
      SELECT 1
      FROM app.turns AS turn_row
      JOIN app.sessions AS session_row ON session_row.id = turn_row.session_id
      WHERE turn_row.id = app.client_inner_reaction.turn_id
        AND turn_row.session_id = app.client_inner_reaction.session_id
        AND turn_row.speaker = 'client'
        AND session_row.learner_id = app.current_uid()
    )
  );