import assert from 'node:assert/strict';

const {
  containsSearchPattern,
  decodeTenantStudentsCursor,
  encodeTenantStudentsCursor,
} = await import('../apps/api/src/features/tenant-admin/student-cursor.ts');

const cursor = {
  createdAt: '2026-07-12T03:04:05.678Z',
  membershipId: '11111111-1111-4111-8111-111111111111',
};
const encoded = encodeTenantStudentsCursor(cursor);
assert.deepEqual(decodeTenantStudentsCursor(encoded), cursor, 'student cursor should round-trip');
assert.equal(decodeTenantStudentsCursor(''), null, 'empty cursor should start from the first page');
assert.equal(containsSearchPattern('100%_ready\\now'), '%100\\%\\_ready\\\\now%', 'student search should escape LIKE metacharacters');

for (const invalid of [
  'not-a-valid-cursor',
  Buffer.from(JSON.stringify({ version: 2, ...cursor })).toString('base64url'),
  Buffer.from(JSON.stringify({ version: 1, createdAt: 'not-a-date', membershipId: cursor.membershipId })).toString('base64url'),
  Buffer.from(JSON.stringify({ version: 1, createdAt: cursor.createdAt, membershipId: 'not-a-uuid' })).toString('base64url'),
]) {
  assert.throws(
    () => decodeTenantStudentsCursor(invalid),
    error => error?.code === 'INVALID_STUDENT_CURSOR' && error?.statusCode === 400,
    'malformed student cursors must fail closed',
  );
}

console.log('[PASS] tenant student cursor contract');