const { formatINR, getStatusColor, calcCommission, calcPendingFromShipper, calcPendingToDriver } = require('../../src/lib/india');
const { parseWhatsAppMessage } = require('../../src/services/parser');

describe('India Utils — formatINR', () => {
  test('formats whole numbers', () => {
    expect(formatINR(1000)).toBe('₹1,000');
    expect(formatINR(100000)).toBe('₹1,00,000');
    expect(formatINR(10000000)).toBe('₹1,00,00,000');
  });

  test('formats decimals', () => {
    expect(formatINR(1999.50)).toBe('₹1,999.5');
  });

  test('handles zero', () => {
    expect(formatINR(0)).toBe('₹0');
  });

  test('handles null/undefined', () => {
    expect(formatINR(null)).toBe('—');
    expect(formatINR(undefined)).toBe('—');
  });
});

describe('India Utils — getStatusColor', () => {
  test('returns correct badge colors', () => {
    expect(getStatusColor('settled')).toBe('green');
    expect(getStatusColor('completed')).toBe('green');
    expect(getStatusColor('loaded / in transit')).toBe('blue');
    expect(getStatusColor('pending collection')).toBe('orange');
    expect(getStatusColor('cancelled')).toBe('red');
    expect(getStatusColor('unknown')).toBe('gray');
  });
});

describe('India Utils — calcCommission', () => {
  test('calculates commission correctly', () => {
    expect(calcCommission(19000, 15900)).toBe(3100);
    expect(calcCommission(50000, 45000)).toBe(5000);
  });

  test('returns null for missing values', () => {
    expect(calcCommission(null, 100)).toBeNull();
    expect(calcCommission(100, null)).toBeNull();
  });
});

describe('India Utils — calcPendingFromShipper', () => {
  test('calculates pending correctly', () => {
    expect(calcPendingFromShipper(19000, 5000)).toBe(14000);
  });

  test('returns null for missing values', () => {
    expect(calcPendingFromShipper(null, 100)).toBeNull();
  });
});

describe('India Utils — calcPendingToDriver', () => {
  test('calculates pending correctly', () => {
    expect(calcPendingToDriver(15900, 10000)).toBe(5900);
  });
});

describe('WhatsApp Parser', () => {
  test('parses a standard message', () => {
    const msg = 'Agarwal Bangalore TN39DV8142 loaded 19000 freight driver advance 15900';
    const result = parseWhatsAppMessage(msg);
    
    expect(result.shipper).toBe('Agarwal Packers and Movers');
    expect(result.to_city).toBe('Bangalore');
    expect(result.vehicle).toBe('TN39DV8142');
    expect(result.freight_charged).toBe(19000);
    expect(result.paid_to_driver).toBe(15900);
    expect(result.commission).toBe(3100);
    expect(result.confidence).toBe('high');
  });

  test('parses message with Mumbai route', () => {
    const msg = 'Kahn Transport Mumbai MH12AB1234 loaded 45000 freight advance 40000';
    const result = parseWhatsAppMessage(msg);
    
    expect(result.shipper).toBe('Kahn Transport');
    expect(result.to_city).toBe('Mumbai');
    expect(result.freight_charged).toBe(45000);
  });

  test('parses status keywords', () => {
    const msg1 = 'Agarwal Chennai TN39DV8142 loaded 20000 freight';
    expect(parseWhatsAppMessage(msg1).status).toBe('loaded / in transit');

    const msg2 = 'Agarwal Chennai TN39DV8142 delivered 20000 freight';
    expect(parseWhatsAppMessage(msg2).status).toBe('delivered / pending collection');
  });

  test('handles empty message', () => {
    const result = parseWhatsAppMessage('');
    expect(result.confidence).toBe('low');
  });

  test('extracts vehicle number', () => {
    const msg = 'Some text KL01AB1234 more text';
    const result = parseWhatsAppMessage(msg);
    expect(result.vehicle).toBe('KL01AB1234');
  });
});