import 'package:flutter_test/flutter_test.dart';

import 'package:miler/data/stop_area.dart';

/// ── The rule, pinned against the addresses that broke it ──
///
/// `areaOf` has been wrong three times, each on a real address from this
/// tenant, and each fix was verified on a device rather than on a guess. The
/// cases below are those addresses. A change that shortens or "simplifies"
/// the rule must survive every one of them.
void main() {
  String area(String addr) => areaOf({'dropaddress': addr});

  test('a door number does not take its locality with it', () {
    // The v2 rule dropped any part containing a digit, so this answered with
    // the city — and on a Coimbatore route every stop is in Coimbatore, which
    // is a queue that says nothing. The number is stripped, the name kept.
    expect(area('12 Peelamedu, Coimbatore'), 'Peelamedu');
  });

  test('the classic comma form still yields the locality', () {
    expect(area('12, SNS Colony, Peelamedu, Coimbatore 641004'), 'Peelamedu');
  });

  test('a landmark phrase never wins over the name behind it', () {
    // Seen live: the first digit-free part was this whole landmark, printed
    // on every row of the run, wrapped to two lines.
    expect(
      area(
        'Coimbatore Gandhipuram Mofussil Bus Stand, Sathyamurthi Road, '
        'Gandhipuram, Ward 54, West Zone',
      ),
      'Gandhipuram',
    );
  });

  test('a street with a door number is passed over for the area', () {
    expect(
      area('14 Cross Cut Road, Gandhipuram, Coimbatore 641012'),
      'Gandhipuram',
    );
    expect(area('12, Cross Cut Road, Gandhipuram'), 'Gandhipuram');
  });

  test('a stammered locality is one locality', () {
    // Live: the geocoder writes `Gandhipuram Gandhipuram` as one part, and
    // the queue printed the stutter on every row it headed.
    expect(area('12, Gandhipuram Gandhipuram, Coimbatore'), 'Gandhipuram');
    expect(area('4 Cross, RS Puram RS Puram, Coimbatore'), 'RS Puram');
  });

  test('Ward 54 is not a place called Ward', () {
    // Stripping digits can leave administrative residue; it must be discarded,
    // not promoted to a one-word name.
    expect(area('Ward 54, Peelamedu, Coimbatore'), 'Peelamedu');
  });

  test('with no one-word locality, the street beats the city', () {
    // "Race Course" is the locality's actual name here; the city rung would
    // distinguish nothing on a route where every stop ends in Coimbatore.
    expect(area('22 Race Course Road, Coimbatore'), 'Race Course Road');
    // But a bare city with nothing before it is still an honest answer.
    expect(area('Coimbatore'), 'Coimbatore');
  });

  test('an empty address returns nothing, never a placeholder', () {
    expect(area(''), '');
    expect(areaOf(const {}), '');
  });

  group('compactAddress', () {
    test('geocoder boilerplate comes off; every place stays', () {
      expect(
        compactAddress(
          'RS Puram RS Puram, Ward 24, West Zone, Perur, Coimbatore South, '
          'Coimbatore, Tamil Nadu, 641002, India',
        ),
        'RS Puram, Ward 24, West Zone, Perur, Coimbatore South, Coimbatore',
      );
    });

    test('a hand-typed address passes through untouched', () {
      expect(
        compactAddress('12, SNS Colony, Peelamedu, Coimbatore 641004'),
        '12, SNS Colony, Peelamedu, Coimbatore 641004',
      );
    });

    test('an immediate duplicate part collapses', () {
      expect(
        compactAddress('Gandhipuram, Gandhipuram, Coimbatore'),
        'Gandhipuram, Coimbatore',
      );
    });
  });

  test('a delivery leg prefers the drop; a pickup leg the pickup', () {
    final stop = {
      'pickupaddress': '1 Anna Nagar, Coimbatore',
      'dropaddress': '2 Saibaba Colony, Coimbatore',
    };
    expect(areaOf(stop), 'Saibaba Colony');
    expect(areaOf(stop, preferDrop: false), 'Anna Nagar');
  });
}