-- Runtime auth/session tables used by the BFF boundary.
-- This runs during DB initialization so the API can use a non-owner app role.

ALTER TABLE app.app_user
  ADD COLUMN IF NOT EXISTS affiliation TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS legal_name TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS department TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS grade_level TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS phone TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS contact_address TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS nickname TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS self_introduction TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS avatar_url TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS profile_completed_at TIMESTAMPTZ,
  ADD COLUMN IF NOT EXISTS terms_agreed_at TIMESTAMPTZ,
  ADD COLUMN IF NOT EXISTS privacy_agreed_at TIMESTAMPTZ,
  ADD COLUMN IF NOT EXISTS terms_version TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS privacy_version TEXT NOT NULL DEFAULT '',
  ADD COLUMN IF NOT EXISTS last_seen_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  ADD COLUMN IF NOT EXISTS account_status TEXT NOT NULL DEFAULT 'approved',
  ADD COLUMN IF NOT EXISTS admin_access BOOLEAN NOT NULL DEFAULT FALSE,
  ADD COLUMN IF NOT EXISTS updated_at TIMESTAMPTZ NOT NULL DEFAULT now();

ALTER TABLE app.app_user
  ALTER COLUMN affiliation SET DEFAULT '';

DO $$
BEGIN
  IF NOT EXISTS (
    SELECT 1 FROM pg_constraint
    WHERE conname = 'app_user_account_status_check'
      AND conrelid = 'app.app_user'::regclass
  ) THEN
    ALTER TABLE app.app_user
      ADD CONSTRAINT app_user_account_status_check
      CHECK (account_status IN ('pending','approved','suspended'));
  END IF;
END $$;

CREATE INDEX IF NOT EXISTS idx_app_user_account_status
  ON app.app_user(account_status, last_seen_at DESC);

CREATE TABLE IF NOT EXISTS app.auth_session (
  sid_hash TEXT PRIMARY KEY,
  user_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE CASCADE,
  role TEXT NOT NULL,
  display_name TEXT NOT NULL,
  cohort_ids JSONB NOT NULL DEFAULT '[]'::jsonb,
  expires_at TIMESTAMPTZ NOT NULL,
  revoked_at TIMESTAMPTZ,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  last_seen_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_auth_session_user_active
  ON app.auth_session(user_id, expires_at)
  WHERE revoked_at IS NULL;

CREATE TABLE IF NOT EXISTS app.user_preferences (
  user_id UUID PRIMARY KEY REFERENCES app.app_user(user_id) ON DELETE CASCADE,
  theme TEXT NOT NULL DEFAULT 'system',
  voice_preset_id TEXT NOT NULL DEFAULT 'soft-young-fem',
  voice_rate REAL NOT NULL DEFAULT 1.0,
  notifications JSONB NOT NULL DEFAULT '{}'::jsonb,
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS app.admin_engine_config (
  id BOOLEAN PRIMARY KEY DEFAULT TRUE CHECK (id),
  engine_mode TEXT NOT NULL,
  engine_url TEXT NOT NULL,
  model TEXT NOT NULL,
  updated_by TEXT,
  updated_at TIMESTAMPTZ
);

CREATE TABLE IF NOT EXISTS app.admin_health_event (
  id BIGSERIAL PRIMARY KEY,
  observed_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  overall_status TEXT NOT NULL CHECK (overall_status IN ('ok','degraded','down')),
  environment TEXT NOT NULL,
  engine_mode TEXT NOT NULL,
  service_key TEXT NOT NULL,
  service_name TEXT NOT NULL,
  service_status TEXT NOT NULL CHECK (service_status IN ('ok','degraded','down')),
  detail TEXT NOT NULL DEFAULT '',
  metric TEXT NOT NULL DEFAULT '',
  load REAL NOT NULL DEFAULT 0.0 CHECK (load >= 0.0 AND load <= 1.0),
  captured_by UUID REFERENCES app.app_user(user_id)
);

CREATE INDEX IF NOT EXISTS idx_admin_health_event_observed
  ON app.admin_health_event(observed_at DESC, service_key);

CREATE TABLE IF NOT EXISTS app.admin_health_daily_rollup (
  rollup_date DATE NOT NULL,
  environment TEXT NOT NULL,
  engine_mode TEXT NOT NULL,
  service_key TEXT NOT NULL,
  service_name TEXT NOT NULL,
  sample_count INTEGER NOT NULL DEFAULT 0 CHECK (sample_count >= 0),
  ok_samples INTEGER NOT NULL DEFAULT 0 CHECK (ok_samples >= 0),
  degraded_samples INTEGER NOT NULL DEFAULT 0 CHECK (degraded_samples >= 0),
  down_samples INTEGER NOT NULL DEFAULT 0 CHECK (down_samples >= 0),
  first_observed_at TIMESTAMPTZ NOT NULL,
  last_observed_at TIMESTAMPTZ NOT NULL,
  latest_status TEXT NOT NULL CHECK (latest_status IN ('ok','degraded','down')),
  last_down_at TIMESTAMPTZ,
  max_load REAL NOT NULL DEFAULT 0.0 CHECK (max_load >= 0.0 AND max_load <= 1.0),
  generated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  PRIMARY KEY (rollup_date, environment, engine_mode, service_key)
);

CREATE INDEX IF NOT EXISTS idx_admin_health_daily_rollup_latest
  ON app.admin_health_daily_rollup(last_observed_at DESC, service_key);

CREATE TABLE IF NOT EXISTS app.support_ticket (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  reporter_id UUID REFERENCES app.app_user(user_id) ON DELETE SET NULL,
  reporter_email TEXT NOT NULL,
  reporter_name TEXT NOT NULL,
  reporter_role TEXT NOT NULL,
  category TEXT NOT NULL DEFAULT 'other' CHECK (
    category IN (
      'account_access',
      'session_review',
      'voice_browser',
      'content_scenario',
      'safety',
      'other'
    )
  ),
  priority TEXT NOT NULL DEFAULT 'normal' CHECK (priority IN ('low','normal','high','urgent')),
  status TEXT NOT NULL DEFAULT 'open' CHECK (
    status IN ('open','triaged','in_progress','resolved','closed')
  ),
  subject TEXT NOT NULL,
  body TEXT NOT NULL,
  source_path TEXT NOT NULL DEFAULT '',
  fingerprint TEXT NOT NULL DEFAULT '',
  parent_ticket_id UUID REFERENCES app.support_ticket(id) ON DELETE SET NULL,
  assigned_group TEXT NOT NULL DEFAULT '',
  resolution_note TEXT NOT NULL DEFAULT '',
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  resolved_at TIMESTAMPTZ,
  last_activity_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_support_ticket_status_priority
  ON app.support_ticket(status, priority, updated_at DESC);

CREATE INDEX IF NOT EXISTS idx_support_ticket_reporter
  ON app.support_ticket(reporter_id, created_at DESC);

CREATE INDEX IF NOT EXISTS idx_support_ticket_fingerprint
  ON app.support_ticket(fingerprint, created_at DESC)
  WHERE fingerprint <> '';

CREATE INDEX IF NOT EXISTS idx_support_ticket_parent
  ON app.support_ticket(parent_ticket_id)
  WHERE parent_ticket_id IS NOT NULL;

ALTER TABLE app.session_review_status
  ADD COLUMN IF NOT EXISTS worksheet_status TEXT NOT NULL DEFAULT 'pending';
ALTER TABLE app.session_review_status
  ADD COLUMN IF NOT EXISTS worksheet_note TEXT NOT NULL DEFAULT '';
ALTER TABLE app.session_review_status
  ADD COLUMN IF NOT EXISTS worksheet_reviewed_at TIMESTAMPTZ;

CREATE TABLE IF NOT EXISTS app.notification_event (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  kind TEXT NOT NULL CHECK (
    kind IN ('account_pending_approval','session_review_ready','admin_test_email')
  ),
  actor_user_id UUID REFERENCES app.app_user(user_id) ON DELETE SET NULL,
  subject_user_id UUID REFERENCES app.app_user(user_id) ON DELETE SET NULL,
  session_id UUID REFERENCES app.sessions(id) ON DELETE CASCADE,
  idempotency_key TEXT NOT NULL UNIQUE,
  payload JSONB NOT NULL DEFAULT '{}'::jsonb,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS app.notification_delivery (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  event_id UUID NOT NULL REFERENCES app.notification_event(id) ON DELETE CASCADE,
  channel TEXT NOT NULL DEFAULT 'email' CHECK (channel IN ('email')),
  recipient_user_id UUID REFERENCES app.app_user(user_id) ON DELETE SET NULL,
  recipient_email TEXT NOT NULL,
  recipient_name TEXT NOT NULL DEFAULT '',
  recipient_role TEXT NOT NULL DEFAULT '',
  subject TEXT NOT NULL,
  status TEXT NOT NULL DEFAULT 'queued' CHECK (
    status IN ('queued','sending','sent','failed','skipped')
  ),
  attempts INTEGER NOT NULL DEFAULT 0,
  next_attempt_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  sent_at TIMESTAMPTZ,
  last_error TEXT,
  provider_message_id TEXT,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  UNIQUE (event_id, channel, recipient_email)
);

CREATE INDEX IF NOT EXISTS idx_notification_event_created
  ON app.notification_event(created_at DESC);
CREATE INDEX IF NOT EXISTS idx_notification_delivery_queue
  ON app.notification_delivery(status, next_attempt_at, created_at)
  WHERE status IN ('queued','failed');
CREATE INDEX IF NOT EXISTS idx_notification_delivery_event
  ON app.notification_delivery(event_id, created_at);

CREATE TABLE IF NOT EXISTS app.learner_prepost_measure (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE CASCADE,
  pilot_id TEXT NOT NULL DEFAULT 'phase3-pilot-draft',
  measure_name TEXT NOT NULL CHECK (
    measure_name IN ('self_efficacy','skill_proficiency','training_satisfaction')
  ),
  timepoint TEXT NOT NULL CHECK (timepoint IN ('pre','post')),
  raw_score NUMERIC(8,3) NOT NULL,
  min_score NUMERIC(8,3) NOT NULL DEFAULT 1.0,
  max_score NUMERIC(8,3) NOT NULL DEFAULT 5.0,
  instrument_version TEXT NOT NULL DEFAULT 'pilot-prepost-scaffold-2026-06-28',
  item_count INTEGER NOT NULL DEFAULT 1 CHECK (item_count >= 1 AND item_count <= 80),
  collected_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  CHECK (max_score > min_score),
  CHECK (raw_score >= min_score AND raw_score <= max_score),
  UNIQUE (learner_id, pilot_id, measure_name, timepoint, instrument_version)
);

CREATE INDEX IF NOT EXISTS idx_learner_prepost_measure_pilot
  ON app.learner_prepost_measure(pilot_id, measure_name, timepoint);

CREATE INDEX IF NOT EXISTS idx_learner_prepost_measure_learner
  ON app.learner_prepost_measure(learner_id, pilot_id);

ALTER TABLE app.admin_health_event ENABLE ROW LEVEL SECURITY;
DROP POLICY IF EXISTS p_admin_health_event_select ON app.admin_health_event;
DROP POLICY IF EXISTS p_admin_health_event_insert ON app.admin_health_event;
DROP POLICY IF EXISTS p_admin_health_event_delete ON app.admin_health_event;
CREATE POLICY p_admin_health_event_select
  ON app.admin_health_event FOR SELECT
  USING (app.current_role_name() = 'admin');
CREATE POLICY p_admin_health_event_insert
  ON app.admin_health_event FOR INSERT
  WITH CHECK (app.current_role_name() = 'admin');
CREATE POLICY p_admin_health_event_delete
  ON app.admin_health_event FOR DELETE
  USING (app.current_role_name() = 'admin');

ALTER TABLE app.admin_health_daily_rollup ENABLE ROW LEVEL SECURITY;
DROP POLICY IF EXISTS p_admin_health_daily_rollup_select ON app.admin_health_daily_rollup;
DROP POLICY IF EXISTS p_admin_health_daily_rollup_insert ON app.admin_health_daily_rollup;
DROP POLICY IF EXISTS p_admin_health_daily_rollup_update ON app.admin_health_daily_rollup;
CREATE POLICY p_admin_health_daily_rollup_select
  ON app.admin_health_daily_rollup FOR SELECT
  USING (app.current_role_name() = 'admin');
CREATE POLICY p_admin_health_daily_rollup_insert
  ON app.admin_health_daily_rollup FOR INSERT
  WITH CHECK (app.current_role_name() = 'admin');
CREATE POLICY p_admin_health_daily_rollup_update
  ON app.admin_health_daily_rollup FOR UPDATE
  USING (app.current_role_name() = 'admin')
  WITH CHECK (app.current_role_name() = 'admin');

ALTER TABLE app.support_ticket ENABLE ROW LEVEL SECURITY;
DROP POLICY IF EXISTS p_support_ticket_select ON app.support_ticket;
DROP POLICY IF EXISTS p_support_ticket_insert ON app.support_ticket;
DROP POLICY IF EXISTS p_support_ticket_update ON app.support_ticket;
DROP POLICY IF EXISTS p_support_ticket_delete ON app.support_ticket;
CREATE POLICY p_support_ticket_select
  ON app.support_ticket FOR SELECT
  USING (
    app.current_role_name() = 'admin'
    OR reporter_id = app.current_uid()
  );
CREATE POLICY p_support_ticket_insert
  ON app.support_ticket FOR INSERT
  WITH CHECK (
    app.current_role_name() = 'admin'
    OR reporter_id = app.current_uid()
  );
CREATE POLICY p_support_ticket_update
  ON app.support_ticket FOR UPDATE
  USING (app.current_role_name() = 'admin')
  WITH CHECK (app.current_role_name() = 'admin');
CREATE POLICY p_support_ticket_delete
  ON app.support_ticket FOR DELETE
  USING (app.current_role_name() = 'admin');

ALTER TABLE app.notification_event ENABLE ROW LEVEL SECURITY;
ALTER TABLE app.notification_delivery ENABLE ROW LEVEL SECURITY;
DROP POLICY IF EXISTS p_notification_event_admin_all ON app.notification_event;
DROP POLICY IF EXISTS p_notification_delivery_admin_all ON app.notification_delivery;
CREATE POLICY p_notification_event_admin_all
  ON app.notification_event FOR ALL
  USING (app.current_role_name() = 'admin')
  WITH CHECK (app.current_role_name() = 'admin');
CREATE POLICY p_notification_delivery_admin_all
  ON app.notification_delivery FOR ALL
  USING (app.current_role_name() = 'admin')
  WITH CHECK (app.current_role_name() = 'admin');

ALTER TABLE app.learner_prepost_measure ENABLE ROW LEVEL SECURITY;
DROP POLICY IF EXISTS p_learner_prepost_measure_select ON app.learner_prepost_measure;
DROP POLICY IF EXISTS p_learner_prepost_measure_insert ON app.learner_prepost_measure;
DROP POLICY IF EXISTS p_learner_prepost_measure_update ON app.learner_prepost_measure;
CREATE POLICY p_learner_prepost_measure_select
  ON app.learner_prepost_measure FOR SELECT
  USING (
    app.current_role_name() = 'admin'
    OR learner_id = app.current_uid()
    OR (
      app.current_role_name() = 'instructor'
      AND EXISTS (
        SELECT 1 FROM app.app_user u
        WHERE u.user_id = app.learner_prepost_measure.learner_id
          AND u.cohort = current_setting('app.current_cohort', true)
      )
    )
  );
CREATE POLICY p_learner_prepost_measure_insert
  ON app.learner_prepost_measure FOR INSERT
  WITH CHECK (
    app.current_role_name() = 'admin'
    OR learner_id = app.current_uid()
  );
CREATE POLICY p_learner_prepost_measure_update
  ON app.learner_prepost_measure FOR UPDATE
  USING (
    app.current_role_name() = 'admin'
    OR learner_id = app.current_uid()
  )
  WITH CHECK (
    app.current_role_name() = 'admin'
    OR learner_id = app.current_uid()
  );

ALTER TABLE app.sessions
  ADD COLUMN IF NOT EXISTS runtime_case_id UUID,
  ADD COLUMN IF NOT EXISTS persona_code TEXT,
  ADD COLUMN IF NOT EXISTS persona_display_name TEXT,
  ADD COLUMN IF NOT EXISTS persona_difficulty TEXT,
  ADD COLUMN IF NOT EXISTS prev_rapport_credit REAL NOT NULL DEFAULT 0.0;

ALTER TABLE app.session_state
  ADD COLUMN IF NOT EXISTS turns_in_stage INT NOT NULL DEFAULT 0;

INSERT INTO app.stage_def (stage_code, display_name, seq, base_openness)
VALUES
  ('라포', '라포', 1, 0.15),
  ('탐색', '탐색', 2, 0.35),
  ('개입', '개입', 3, 0.55),
  ('정리', '정리', 4, 0.45)
ON CONFLICT (stage_code) DO UPDATE SET
  display_name = EXCLUDED.display_name,
  seq = EXCLUDED.seq,
  base_openness = EXCLUDED.base_openness;

DROP POLICY IF EXISTS p_sessions_modify ON app.sessions;
DROP POLICY IF EXISTS p_sessions_insert ON app.sessions;
DROP POLICY IF EXISTS p_sessions_update ON app.sessions;
DROP POLICY IF EXISTS p_sessions_delete ON app.sessions;
CREATE POLICY p_sessions_insert ON app.sessions FOR INSERT WITH CHECK (
  app.is_ai_context() OR app.current_role_name() IN ('admin','instructor')
  OR learner_id = app.current_uid()
);
CREATE POLICY p_sessions_update ON app.sessions FOR UPDATE USING (
  app.is_ai_context() OR app.current_role_name() IN ('admin','instructor')
  OR learner_id = app.current_uid()
) WITH CHECK (
  app.is_ai_context() OR app.current_role_name() IN ('admin','instructor')
  OR learner_id = app.current_uid()
);
CREATE POLICY p_sessions_delete ON app.sessions FOR DELETE USING (
  app.is_ai_context() OR app.current_role_name() IN ('admin','instructor')
  OR learner_id = app.current_uid()
);

DROP POLICY IF EXISTS p_turns_modify ON app.turns;
DROP POLICY IF EXISTS p_turns_insert ON app.turns;
DROP POLICY IF EXISTS p_turns_update ON app.turns;
DROP POLICY IF EXISTS p_turns_delete ON app.turns;
CREATE POLICY p_turns_insert ON app.turns FOR INSERT WITH CHECK (
  app.is_ai_context()
  OR app.current_role_name() IN ('admin','instructor')
  OR EXISTS (
    SELECT 1 FROM app.sessions s
    WHERE s.id = app.turns.session_id
      AND s.learner_id = app.current_uid()
  )
);
CREATE POLICY p_turns_update ON app.turns FOR UPDATE USING (
  app.is_ai_context()
  OR app.current_role_name() IN ('admin','instructor')
  OR EXISTS (
    SELECT 1 FROM app.sessions s
    WHERE s.id = app.turns.session_id
      AND s.learner_id = app.current_uid()
  )
) WITH CHECK (
  app.is_ai_context()
  OR app.current_role_name() IN ('admin','instructor')
  OR EXISTS (
    SELECT 1 FROM app.sessions s
    WHERE s.id = app.turns.session_id
      AND s.learner_id = app.current_uid()
  )
);
CREATE POLICY p_turns_delete ON app.turns FOR DELETE USING (
  app.is_ai_context()
  OR app.current_role_name() IN ('admin','instructor')
  OR EXISTS (
    SELECT 1 FROM app.sessions s
    WHERE s.id = app.turns.session_id
      AND s.learner_id = app.current_uid()
  )
);