import 'dart:convert';
import 'dart:io';

import 'package:display/checklist.dart';
import 'package:flutter_test/flutter_test.dart';

Checklist sample() => Checklist.fromJson({
  'id': 'demo',
  'version': 2,
  'title': 'Demo',
  'sections': [
    {
      'title': 'A',
      'steps': [
        {
          'id': '1',
          'title': 'Brake',
          'actions': [
            {'label': 'brake', 'repeat': 2},
            {'label': 'flash', 'point': true},
          ],
        },
        {
          'id': '2',
          'title': 'Gears',
          'actions': [
            {'label': 'gear 1'},
          ],
        },
      ],
    },
  ],
});

void main() {
  test('one button: announce once, start/end spans, repeats numbered, points single', () {
    final r = ChecklistRun(sample());
    expect(r.nextLabel, 'Start  brake #1');
    expect(r.press(), ['checklist demo v2', '1 brake #1 start']);
    expect(r.nextLabel, 'End  brake #1');
    expect(r.press(), ['1 brake #1 end']);
    expect(r.press(), ['1 brake #2 start']);
    expect(r.press(), ['1 brake #2 end']);
    expect(r.nextLabel, 'Mark  flash');
    expect(r.press(), ['1 flash']);
    expect(r.nextLabel, 'Next step');
    expect(r.press(), isEmpty);
    expect(r.current.id, '2');
    expect(r.press(), ['2 gear 1 start']);
    expect(r.press(), ['2 gear 1 end']);
    expect(r.finished, isTrue);
    expect(r.nextLabel, 'All done');
  });

  test('leaving an open span aborts it', () {
    final r = ChecklistRun(sample());
    r.press();
    expect(r.redo(), ['1 brake #1 abort', '1 redo']);
    expect(r.inSpan, isFalse);
    expect(r.nextLabel, 'Start  brake #1');
    r.press();
    expect(r.select(1), ['1 brake #1 abort']);
    expect(r.current.id, '2');
    expect(r.skip(), ['2 skip']);
    expect(r.finished, isTrue);
  });

  test('the bundled checklists parse, with unique step ids', () {
    final dir = Directory('assets/contracts/checklists');
    final files = dir.listSync().whereType<File>().where((f) => f.path.endsWith('.json')).toList();
    expect(files, isNotEmpty);
    for (final f in files) {
      final c = Checklist.fromJson(jsonDecode(f.readAsStringSync()) as Map<String, dynamic>);
      final ids = c.steps.map((s) => s.id).toList();
      expect(ids.toSet().length, ids.length, reason: f.path);
      expect(c.steps.every((s) => s.actions.isNotEmpty), isTrue, reason: f.path);
    }
  });
}