import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

import 'package:miler/views/Dashboard/pickups/stop_verify.dart';

/// The review step is the last screen before a stop is closed, and the only
/// thing the rider does on it is check figures. It used to spend a full line on
/// each — an icon, a caption and a value — for values that are almost always
/// four characters, so six facts ran past the fold and he had to scroll a
/// *confirmation* screen to see what he was confirming.
///
/// The packing rule is what fixed that, and it is asserted here rather than on
/// screen: the review sits behind a camera gate no widget test can pass.
void main() {
  ReviewFact narrow(String label, String value) =>
      ReviewFact(label, value, icon: Icons.circle);

  ReviewFact wide(String label, String value) =>
      ReviewFact(label, value, icon: Icons.circle, wide: true);

  List<List<String>> labels(List<List<ReviewFact>> rows) => [
    for (final r in rows) [for (final f in r) f.label],
  ];

  test('two short facts share a row', () {
    final rows = packReviewFacts([
      narrow('Parcels', '3 of 3'),
      narrow('Weight', '4.5 kg'),
    ]);

    expect(labels(rows), [
      ['Parcels', 'Weight'],
    ]);
  });

  test('a sentence takes its own row', () {
    // Wrapping a recipient's name or a damage note into half a column is how a
    // grid turns back into a wall of text.
    final rows = packReviewFacts([
      narrow('Parcels', '3 of 3'),
      narrow('Weight', '4.5 kg'),
      wide('Note', 'Corner of the second box is crushed'),
    ]);

    expect(labels(rows), [
      ['Parcels', 'Weight'],
      ['Note'],
    ]);
  });

  test('a wide fact does not drag its neighbour onto its row', () {
    final rows = packReviewFacts([
      wide('Received by', 'Ramesh Kumar · Security'),
      narrow('OTP', '482156'),
    ]);

    expect(labels(rows), [
      ['Received by'],
      ['OTP'],
    ]);
  });

  test('empty values are dropped, not rendered as dashes', () {
    final rows = packReviewFacts([
      narrow('Parcels', '3 of 3'),
      narrow('Pickup code', ''),
      narrow('Weight', '4.5 kg'),
    ]);

    expect(labels(rows), [
      ['Parcels', 'Weight'],
    ]);
  });

  test('order is meaning, so nothing is re-sorted to pack tighter', () {
    final rows = packReviewFacts([
      narrow('Parcels', '3 of 3'),
      wide('Note', 'Shutter was half down'),
      narrow('Weight', '4.5 kg'),
      narrow('Condition', 'Sealed & intact'),
    ]);

    // A tighter packing exists — pair Parcels with Weight and push the note
    // down — and it is deliberately not taken.
    expect(labels(rows), [
      ['Parcels'],
      ['Note'],
      ['Weight', 'Condition'],
    ]);
  });

  test('the collect leg fits in three rows instead of six', () {
    final rows = packReviewFacts([
      narrow('Parcels', '3 of 3'),
      narrow('Weight', '4.5 kg'),
      narrow('Condition', 'Sealed & intact'),
      narrow('Pickup code', '482156'),
      wide('Note', 'Customer only had two ready'),
    ]);

    expect(rows, hasLength(3));
  });
}