import 'package:cookit/src/planning/ingredient_totals.dart';
import 'package:cookit/src/recipes/models/recipe.dart';
import 'package:flutter_test/flutter_test.dart';

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

void main() {
  Recipe withLines(String id, List<IngredientLine> lines) => recipe(
    id: id,
    ingredientGroups: [IngredientGroup(lines: lines)],
  );

  test('lines with the same name and Unit are added up, others stay apart', () {
    final totals = ingredientTotals([
      withLines('a', const [
        IngredientLine(amount: 200, unitKey: 'gram', name: 'Butter'),
        IngredientLine(amount: 2, name: 'Eier'),
        IngredientLine(name: 'Salz'),
      ]),
      withLines('b', const [
        IngredientLine(amount: 200, unitKey: 'gram', name: 'butter '),
        IngredientLine(amount: 1, unitKey: 'tablespoon', name: 'Butter'),
        IngredientLine(amount: 1, amountMax: 2, name: 'Eier'),
        IngredientLine(name: 'Salz'),
      ]),
    ]);
    expect(
      [for (final l in totals) (l.amount, l.amountMax, l.unitKey, l.name)],
      [
        (400.0, null, 'gram', 'Butter'),
        (3.0, 4.0, null, 'Eier'),
        (null, null, null, 'Salz'),
        (1.0, null, 'tablespoon', 'Butter'),
      ],
    );
  });

  test('a remark survives only when every line agrees', () {
    final totals = ingredientTotals([
      withLines('a', const [
        IngredientLine(amount: 1, name: 'Zitrone', remark: 'bio'),
        IngredientLine(amount: 1, name: 'Ei', remark: 'groß'),
      ]),
      withLines('b', const [
        IngredientLine(amount: 1, name: 'Zitrone', remark: 'bio'),
        IngredientLine(amount: 1, name: 'Ei'),
      ]),
    ]);
    expect([for (final l in totals) l.remark], ['bio', null]);
  });

  test('the same Recipe planned twice counts twice', () {
    final r = withLines('a', const [IngredientLine(amount: 100, unitKey: 'gram', name: 'Mehl')]);
    expect(ingredientTotals([r, r]).single.amount, 200);
  });
}