import {
  EMPLOYEE_CODE_MAX_LENGTH,
  EMPLOYEE_NAME_MAX_LENGTH,
  isAllowedCsvUpload,
  isValidEmployeeCode,
  isValidEmployeeName,
  isValidEmployeePosition,
  parseCsvRecord,
} from './employee-fields';

describe('employee fields', () => {
  describe('isValidEmployeeName', () => {
    it.each(['Ada', 'Jean Luc', 'A', 'North West Crew'])(
      'accepts %s',
      (name) => {
        expect(isValidEmployeeName(name)).toBe(true);
      },
    );

    it.each(['', 'Ada1', 'Jean-Luc', 'EMP_01', ' Ada', 'Ada ', 'Jean  Luc'])(
      'rejects %s',
      (name) => {
        expect(isValidEmployeeName(name)).toBe(false);
      },
    );

    it('rejects names longer than 64 characters', () => {
      expect(
        isValidEmployeeName('A'.repeat(EMPLOYEE_NAME_MAX_LENGTH + 1)),
      ).toBe(false);
      expect(isValidEmployeeName('A'.repeat(EMPLOYEE_NAME_MAX_LENGTH))).toBe(
        true,
      );
    });
  });

  describe('isValidEmployeeCode', () => {
    it.each(['EMP', 'EMP_01', 'A', 'ops2', 'A_b_1'])('accepts %s', (code) => {
      expect(isValidEmployeeCode(code)).toBe(true);
    });

    it.each(['', 'EMP 01', 'EMP-01', 'EMP.01', ' EMP', 'EMP '])(
      'rejects %s',
      (code) => {
        expect(isValidEmployeeCode(code)).toBe(false);
      },
    );

    it('rejects codes longer than 16 characters', () => {
      expect(
        isValidEmployeeCode('A'.repeat(EMPLOYEE_CODE_MAX_LENGTH + 1)),
      ).toBe(false);
      expect(isValidEmployeeCode('A'.repeat(EMPLOYEE_CODE_MAX_LENGTH))).toBe(
        true,
      );
    });
  });

  describe('isValidEmployeePosition', () => {
    it.each(['sales', 'driver', 'crew'])('accepts %s', (position) => {
      expect(isValidEmployeePosition(position)).toBe(true);
    });

    it.each(['', 'Sales', 'pilot', 'crew '])('rejects %s', (position) => {
      expect(isValidEmployeePosition(position)).toBe(false);
    });
  });

  describe('parseCsvRecord', () => {
    it('keeps commas inside quoted fields', () => {
      expect(parseCsvRecord('EMP_01,Ada Lovelace,"sales, lead"')).toEqual([
        'EMP_01',
        'Ada Lovelace',
        'sales, lead',
      ]);
    });

    it('unescapes doubled quotes', () => {
      expect(parseCsvRecord('"Say ""hello""",x')).toEqual(['Say "hello"', 'x']);
    });
  });

  describe('isAllowedCsvUpload', () => {
    it('accepts csv mime or .csv names', () => {
      expect(
        isAllowedCsvUpload({
          mimetype: 'text/csv',
          originalname: 'x.txt',
        }),
      ).toBe(true);
      expect(
        isAllowedCsvUpload({
          mimetype: 'application/octet-stream',
          originalname: 'employees.csv',
        }),
      ).toBe(true);
    });

    it('rejects non-csv files', () => {
      expect(
        isAllowedCsvUpload({
          mimetype: 'application/pdf',
          originalname: 'x.pdf',
        }),
      ).toBe(false);
    });
  });
});