const test = require('node:test');
const assert = require('node:assert/strict');

const {
  getSingleAssignmentPositionKey,
  getSingleAssignmentPositionLabel,
  getSingleAssignmentPositionRegex,
} = require('../validation/facultyValidation');

test('single-assignment position key supports canonical and legacy spellings', () => {
  assert.equal(getSingleAssignmentPositionKey('Head of Department'), 'head-of-department');
  assert.equal(getSingleAssignmentPositionKey('Head of the Department'), 'head-of-department');
  assert.equal(getSingleAssignmentPositionKey('Secretary'), 'secretary');
  assert.equal(getSingleAssignmentPositionKey('Head of Laboratory'), 'head-of-laboratory');
  assert.equal(getSingleAssignmentPositionKey('Head of the Laboratory'), 'head-of-laboratory');
});

test('single-assignment position label returns canonical role labels', () => {
  assert.equal(getSingleAssignmentPositionLabel('head of department'), 'Head of the Department');
  assert.equal(getSingleAssignmentPositionLabel('SECRETARY'), 'Secretary');
  assert.equal(getSingleAssignmentPositionLabel('head of laboratory'), 'Head of the Laboratory');
  assert.equal(getSingleAssignmentPositionLabel('Lecturer'), '');
});

test('single-assignment position regex matches aliases and skips other roles', () => {
  const departmentRegex = getSingleAssignmentPositionRegex('head of department');
  assert.ok(departmentRegex instanceof RegExp);
  assert.equal(departmentRegex.test('Head of Department'), true);
  assert.equal(departmentRegex.test('Head of the Department'), true);

  const secretaryRegex = getSingleAssignmentPositionRegex('secretary');
  assert.ok(secretaryRegex instanceof RegExp);
  assert.equal(secretaryRegex.test('Secretary'), true);
  assert.equal(secretaryRegex.test('Senior Secretary'), false);

  const nonRestrictedRegex = getSingleAssignmentPositionRegex('Lecturer');
  assert.equal(nonRestrictedRegex, null);
});