import 'package:cookit/src/cooking_mode/cooking_session.dart';
import 'package:cookit/src/recipes/models/recipe.dart';
import 'package:flutter_test/flutter_test.dart';

import '../support/fixtures.dart';

void main() {
  test('steps run through all Step Sections with continuous numbers', () {
    final session = CookingSession(
      recipe(
        stepSections: const [
          StepSection(steps: ['Ofen vorheizen.']),
          StepSection(title: 'Teig', steps: ['Kneten.', 'Ruhen lassen.']),
        ],
      ),
    );
    expect(
      [for (final s in session.steps) (s.number, s.section, s.text)],
      [(1, null, 'Ofen vorheizen.'), (2, 'Teig', 'Kneten.'), (3, 'Teig', 'Ruhen lassen.')],
    );
  });

  test('more servings scale every amount', () {
    final session = CookingSession(recipe()); // 4 servings: 300 g Mehl, 2–3 EL Öl
    expect(session.factor, 1);
    session
      ..moreServings()
      ..moreServings();
    expect(session.servings, 6);
    final lines = session.ingredientGroups.first.lines;
    expect(lines[0].amount, 450);
    expect((lines[1].amount, lines[1].amountMax), (3, 4.5));
  });

  test('servings never go below one and fractional servings step to whole numbers', () {
    final session = CookingSession(Recipe(id: 'x', name: 'x', servings: 2.5, createdAt: testTime, updatedAt: testTime));
    session.fewerServings();
    expect(session.servings, 2);
    session
      ..fewerServings()
      ..fewerServings();
    expect(session.servings, 1);
    session.moreServings();
    expect(session.servings, 2);
  });

  test('a Recipe without Servings is not scaled', () {
    final session = CookingSession(Recipe(id: 'x', name: 'x', createdAt: testTime, updatedAt: testTime));
    expect(session.canScale, isFalse);
    expect(session.factor, 1);
  });
}