-- Validation tests: run in a single transaction per block
-- ===========================================================

-- 1. SEED: units + users
INSERT INTO units(code, name, type) VALUES
  ('DHYD', 'Đại học Y Dược TP.HCM', 'TRUONG'),
  ('KHCN', 'Phòng Khoa học Công nghệ', 'PHONG');

INSERT INTO users(full_name, title, email, id_number, unit_id, qualification, user_type) VALUES
  ('Trần Hùng',         'PGS.TS', 'tranhung@ump.edu.vn',    '001001', 1, 'Tiến sĩ', 'AUTHOR'),
  ('Đỗ Quốc Vũ',        'CN.',    'doquocvu@ump.edu.vn',    '001002', 2, 'Cử nhân', 'AUTHOR'),
  ('Nguyễn Hội đồng A', 'PGS.TS', 'hdA@ump.edu.vn',         '002001', 1, 'Tiến sĩ', 'COUNCIL');

-- 2. CREATE an application in DRAFT state
INSERT INTO applications(code, title, registration_year, status, purpose, primary_unit_id, created_by)
VALUES ('SK-2025-001',
        'Quy trình xét duyệt Đạo đức trong nghiên cứu trên động vật',
        2025, 'DRAFT',
        'Chuẩn hoá quy trình xét duyệt hồ sơ',
        2, 2);

-- 3. ADD authors with DEFERRED constraint (sums to 100 at COMMIT)
BEGIN;
INSERT INTO application_authors(application_id, user_id, contribution_pct, role) VALUES
  (1, 1, 50, 'CO_AUTHOR'),
  (1, 2, 50, 'PRIMARY');
-- At this point sum=100, but app is DRAFT so constraint doesn't even care yet
COMMIT;

-- Verify
SELECT 'Authors inserted:' AS step, count(*) FROM application_authors;

-- 4. TRY to submit the application (DRAFT → SUBMITTED): needs classification
--    This should FAIL the check constraint because no classification flag is set
\echo 'Test 4: should FAIL (missing classification)'
UPDATE applications SET status='SUBMITTED' WHERE application_id=1;
\echo ''

-- Fix and retry
UPDATE applications
   SET is_technical_solution = TRUE,
       status = 'SUBMITTED'
 WHERE application_id = 1;
SELECT 'After submit:' AS step, status, submitted_at FROM applications WHERE application_id=1;

-- 5. TRY invalid transition SUBMITTED → APPROVED (should FAIL)
\echo 'Test 5: should FAIL (illegal transition)'
UPDATE applications SET status='APPROVED' WHERE application_id=1;
\echo ''

-- Valid transitions
UPDATE applications SET status='UNDER_REVIEW' WHERE application_id=1;

-- 6. EVALUATOR scores the application
INSERT INTO evaluations(application_id, evaluator_id, novelty_score, effectiveness_score, conclusion)
VALUES (1, 3, 35, 50, 'Đề xuất công nhận');

SELECT 'Evaluation:' AS step, novelty_score, effectiveness_score, total_score FROM evaluations;

-- 7. Move to EVALUATED → APPROVED
UPDATE applications SET status='EVALUATED' WHERE application_id=1;
UPDATE applications SET status='APPROVED' WHERE application_id=1;

SELECT 'Final status:' AS step, status, decided_at IS NOT NULL AS has_decision_time
  FROM applications WHERE application_id=1;

-- 8. READ: summary view
SELECT code, title, status, author_names, avg_score, num_evaluations
  FROM v_application_summary;

-- 9. AUDIT trail: who changed what?
SELECT table_name, action, changed_at,
       (new_data->>'status') AS new_status
  FROM audit_log
 WHERE table_name = 'applications'
 ORDER BY log_id;

-- 10. Bad contribution sum should fail at COMMIT
\echo 'Test 10: should FAIL (sum != 100 on submitted app)'
BEGIN;
  UPDATE application_authors SET contribution_pct = 30 WHERE application_id=1 AND user_id=1;
  -- sum is now 30+50=80, but app is APPROVED so trigger will reject at commit
COMMIT;