\set ON_ERROR_STOP on

-- Regression for 20260929000003_meeting_template_delete.sql.
-- A custom meeting-document template that was used to create a meeting
-- (mobile_create_meeting_workspace_v2) must still be deletable through
-- delete_user_template_v1 and sync_delete_user_template_v1. The meeting stays
-- and is detached (template_id = NULL) with its creation identity intact.
-- Re-pointing an RPC-created meeting at a different template stays forbidden.

BEGIN;

CREATE OR REPLACE FUNCTION pg_temp.assert_true(condition boolean, message text)
RETURNS void
LANGUAGE plpgsql
AS $$
BEGIN
  IF condition IS NOT TRUE THEN
    RAISE EXCEPTION 'assertion_failed: %', message;
  END IF;
END;
$$;

CREATE OR REPLACE FUNCTION pg_temp.act_as(uid uuid)
RETURNS void
LANGUAGE sql
AS $$
  SELECT set_config(
    'request.jwt.claims',
    json_build_object('sub', uid, 'role', 'authenticated')::text,
    true
  );
$$;

INSERT INTO auth.users (
  id, aud, role, email, encrypted_password, email_confirmed_at,
  raw_app_meta_data, raw_user_meta_data, created_at, updated_at
) VALUES (
  '32000000-0000-4000-8000-000000000001', 'authenticated', 'authenticated',
  'meeting-template-delete@example.invalid', crypt('fixture-password', gen_salt('bf')), now(),
  '{"provider":"email","providers":["email"]}'::jsonb, '{}'::jsonb, now(), now()
);

CREATE TEMP TABLE fixture_ids (
  label text PRIMARY KEY,
  id uuid NOT NULL
) ON COMMIT DROP;
GRANT ALL ON fixture_ids TO authenticated;

SELECT pg_temp.act_as('32000000-0000-4000-8000-000000000001');
SET LOCAL ROLE authenticated;

-- Three custom meeting-document templates: one deleted via the mobile RPC,
-- one via the desktop sync RPC, one used as a re-point target.
INSERT INTO fixture_ids(label, id)
SELECT 'weekly', (public.create_user_template_v1(
  'meeting_document', 'Weekly sync', NULL, '[]'::jsonb, NULL, 'Summarize the weekly sync.'
)).id;
INSERT INTO fixture_ids(label, id)
SELECT 'retro', (public.create_user_template_v1(
  'meeting_document', 'Retro', NULL, '[]'::jsonb, NULL, 'Summarize the retrospective.'
)).id;
INSERT INTO fixture_ids(label, id)
SELECT 'other', (public.create_user_template_v1(
  'meeting_document', 'Other', NULL, '[]'::jsonb, NULL, 'Summarize.'
)).id;

INSERT INTO fixture_ids(label, id)
SELECT 'weekly_meeting', (public.mobile_create_meeting_workspace_v2(
  'Weekly sync 09-28', '["Alice"]'::jsonb, 'en',
  (SELECT id FROM fixture_ids WHERE label = 'weekly'),
  '32000000-0000-4000-8000-0000000000a1'
)).id;
INSERT INTO fixture_ids(label, id)
SELECT 'retro_meeting', (public.mobile_create_meeting_workspace_v2(
  'Retro 09-28', '[]'::jsonb, 'ko',
  (SELECT id FROM fixture_ids WHERE label = 'retro'),
  '32000000-0000-4000-8000-0000000000a2'
)).id;

CREATE TEMP TABLE original_hashes ON COMMIT DROP AS
SELECT id, creation_idempotency_key, creation_request_hash
FROM public.meetings
WHERE id IN (SELECT id FROM fixture_ids WHERE label LIKE '%_meeting');

-- Re-pointing an RPC-created meeting at a different template stays forbidden.
DO $$
BEGIN
  UPDATE public.meetings
  SET template_id = (SELECT id FROM fixture_ids WHERE label = 'other')
  WHERE id = (SELECT id FROM fixture_ids WHERE label = 'weekly_meeting');
  RAISE EXCEPTION 'assertion_failed: template re-point was allowed';
EXCEPTION
  WHEN insufficient_privilege THEN
    PERFORM pg_temp.assert_true(
      SQLERRM = 'meeting_creation_template_immutable',
      format('re-point denied by the identity trigger, got %s', SQLERRM)
    );
END;
$$;

-- 1) Mobile delete: delete_user_template_v1 no longer fails with 23503.
SELECT pg_temp.assert_true(
  public.delete_user_template_v1(
    (SELECT id FROM fixture_ids WHERE label = 'weekly'),
    (SELECT revision FROM public.user_templates
     WHERE id = (SELECT id FROM fixture_ids WHERE label = 'weekly'))
  ),
  'template used by a meeting can be deleted'
);

-- 2) Desktop sync delete: sync_delete_user_template_v1 drains the outbox.
SELECT pg_temp.assert_true(
  public.sync_delete_user_template_v1((SELECT id FROM fixture_ids WHERE label = 'retro')),
  'sync delete of a template used by a meeting succeeds'
);

SELECT pg_temp.assert_true(
  NOT EXISTS (
    SELECT 1 FROM public.user_templates
    WHERE id IN (SELECT id FROM fixture_ids WHERE label IN ('weekly', 'retro'))
  ),
  'deleted templates are gone on the server'
);

SELECT pg_temp.assert_true(
  (SELECT count(*) FROM public.meetings m
   JOIN original_hashes o ON o.id = m.id
   WHERE m.template_id IS NULL
     AND m.creation_idempotency_key = o.creation_idempotency_key
     AND m.creation_request_hash = o.creation_request_hash) = 2,
  'meetings survive, are detached, and keep their creation identity'
);

-- Manual detach to NULL is allowed on an RPC-created meeting.
INSERT INTO fixture_ids(label, id)
SELECT 'other_meeting', (public.mobile_create_meeting_workspace_v2(
  'Other 09-28', '[]'::jsonb, 'en',
  (SELECT id FROM fixture_ids WHERE label = 'other'),
  '32000000-0000-4000-8000-0000000000a3'
)).id;

UPDATE public.meetings
SET template_id = NULL
WHERE id = (SELECT id FROM fixture_ids WHERE label = 'other_meeting');

SELECT pg_temp.assert_true(
  (SELECT template_id IS NULL FROM public.meetings
   WHERE id = (SELECT id FROM fixture_ids WHERE label = 'other_meeting')),
  'RPC-created meeting can be detached from its template'
);

RESET ROLE;

-- Schema contract: the FK detaches instead of restricting.
SELECT pg_temp.assert_true(
  (SELECT confdeltype = 'n' FROM pg_constraint
   WHERE conrelid = 'public.meetings'::regclass
     AND conname = 'meetings_template_id_fkey'),
  'meetings.template_id FK is ON DELETE SET NULL'
);

ROLLBACK;