import 'package:eatvio_app/features/feed/models/diets_pagination_model.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  group('Portion enum', () {
    test('has all expected values', () {
      expect(Portion.values.length, 3);
      expect(Portion.grams, isNotNull);
      expect(Portion.milliliters, isNotNull);
      expect(Portion.pcs, isNotNull);
    });

    test('getPortionFromValue returns correct enum for valid values', () {
      expect(Portion.getPortionFromValue('gr'), Portion.grams);
      expect(Portion.getPortionFromValue('milliliters'), Portion.milliliters);
      expect(Portion.getPortionFromValue('pcs'), Portion.pcs);
    });

    test('getPortionFromValue returns null for invalid values', () {
      expect(Portion.getPortionFromValue('invalid'), isNull);
      expect(Portion.getPortionFromValue(''), isNull);
    });

    test('getValue returns correct string values', () {
      expect(Portion.grams.getValue(), 'gr');
      expect(Portion.milliliters.getValue(), 'milliliters');
      expect(Portion.pcs.getValue(), 'pcs');
    });
  });

  group('DietType', () {
    test('hasAtLeastOneType returns true when at least one type is true', () {
      const dietType = DietType(light: true, veg: false, carb: false, meat: false);
      expect(dietType.hasAtLeastOneType(), isTrue);
    });

    test('hasAtLeastOneType returns true when veg is true', () {
      const dietType = DietType(light: null, veg: true, carb: null, meat: null);
      expect(dietType.hasAtLeastOneType(), isTrue);
    });

    test('hasAtLeastOneType returns true when carb is true', () {
      const dietType = DietType(light: null, veg: null, carb: true, meat: null);
      expect(dietType.hasAtLeastOneType(), isTrue);
    });

    test('hasAtLeastOneType returns true when meat is true', () {
      const dietType = DietType(light: null, veg: null, carb: null, meat: true);
      expect(dietType.hasAtLeastOneType(), isTrue);
    });

    test('hasAtLeastOneType returns false when all types are false', () {
      const dietType = DietType(light: false, veg: false, carb: false, meat: false);
      expect(dietType.hasAtLeastOneType(), isFalse);
    });

    test('hasAtLeastOneType returns false when all types are null', () {
      const dietType = DietType(light: null, veg: null, carb: null, meat: null);
      expect(dietType.hasAtLeastOneType(), isFalse);
    });

    test('fromJson parses all fields correctly', () {
      final json = {
        'light': true,
        'veg': false,
        'carb': true,
        'meat': false,
      };

      final model = DietType.fromJson(json);

      expect(model.light, isTrue);
      expect(model.veg, isFalse);
      expect(model.carb, isTrue);
      expect(model.meat, isFalse);
    });

    test('toJson serializes all fields correctly', () {
      const model = DietType(light: true, veg: false, carb: true, meat: false);

      final json = model.toJson();

      expect(json['light'], isTrue);
      expect(json['veg'], isFalse);
      expect(json['carb'], isTrue);
      expect(json['meat'], isFalse);
    });
  });

  group('CreatedDiet', () {
    test('fromJson parses id correctly', () {
      final json = {'id': 123};

      final model = CreatedDiet.fromJson(json);

      expect(model.id, 123);
    });

    test('toJson serializes id correctly', () {
      const model = CreatedDiet(id: 123);

      final json = model.toJson();

      expect(json['id'], 123);
    });
  });

  group('DailyNutrition', () {
    test('fromJson parses all fields correctly', () {
      final json = {
        'energy': 2000.0,
        'proteins': 100.0,
        'fats': 50.0,
        'carbohydrates': 250.0,
      };

      final model = DailyNutrition.fromJson(json);

      expect(model.energy, 2000.0);
      expect(model.proteins, 100.0);
      expect(model.fats, 50.0);
      expect(model.carbohydrates, 250.0);
    });

    test('toJson serializes all fields correctly', () {
      const model = DailyNutrition(
        energy: 2000.0,
        proteins: 100.0,
        fats: 50.0,
        carbohydrates: 250.0,
      );

      final json = model.toJson();

      expect(json['energy'], 2000.0);
      expect(json['proteins'], 100.0);
      expect(json['fats'], 50.0);
      expect(json['carbohydrates'], 250.0);
    });
  });

  group('DailySchedule', () {
    test('fromJson parses all fields correctly', () {
      final json = {
        'name': 'Breakfast',
        'portion': 'gr',
        'quantity': '100',
        'nutrition': {
          'energy': 200.0,
          'proteins': 10.0,
          'fats': 5.0,
          'carbohydrates': 25.0,
        },
      };

      final model = DailySchedule.fromJson(json);

      expect(model.name, 'Breakfast');
      expect(model.portion, Portion.grams);
      expect(model.quantity, 100);
      expect(model.dailyNutrition, isNotNull);
      expect(model.dailyNutrition?.energy, 200.0);
    });

    test('fromJson parses quantity as int', () {
      final json = {
        'name': 'Lunch',
        'portion': 'milliliters',
        'quantity': 200,
      };

      final model = DailySchedule.fromJson(json);

      expect(model.quantity, 200);
    });

    test('toJson serializes all fields correctly', () {
      const nutrition = DailyNutrition(
        energy: 200.0,
        proteins: 10.0,
        fats: 5.0,
        carbohydrates: 25.0,
      );
      const model = DailySchedule(
        name: 'Breakfast',
        portion: Portion.grams,
        quantity: 100,
        dailyNutrition: nutrition,
      );

      final json = model.toJson();

      expect(json['name'], 'Breakfast');
      expect(json['portion'], 'gr');
      expect(json['quantity'], 100);
    });
  });

  group('Author', () {
    test('fromJson parses all fields correctly', () {
      final json = {
        'author_slug': 'author-1',
        'author_name': 'Author Name',
        'author_profile_icon': 'icon.jpg',
        'author_is_me': true,
        'is_entity_subscribed_by_me': false,
        'author_place_in_rating': 5,
      };

      final model = Author.fromJson(json);

      expect(model.authorSlug, 'author-1');
      expect(model.authorName, 'Author Name');
      expect(model.authorProfileIcon, 'icon.jpg');
      expect(model.authorIsMe, isTrue);
      expect(model.isEntitySubscribedByMe, isFalse);
      expect(model.authorPlaceInRating, 5);
    });

    test('fromJson handles null optional fields', () {
      final json = {
        'author_slug': 'author-1',
        'author_name': 'Author Name',
        'author_profile_icon': 'icon.jpg',
        'author_is_me': false,
      };

      final model = Author.fromJson(json);

      expect(model.isEntitySubscribedByMe, isNull);
      expect(model.authorPlaceInRating, isNull);
    });

    test('toJson serializes all fields correctly', () {
      const model = Author(
        authorSlug: 'author-1',
        authorName: 'Author Name',
        authorProfileIcon: 'icon.jpg',
        authorIsMe: true,
        isEntitySubscribedByMe: false,
        authorPlaceInRating: 5,
      );

      final json = model.toJson();

      expect(json['author_slug'], 'author-1');
      expect(json['author_name'], 'Author Name');
      expect(json['author_profile_icon'], 'icon.jpg');
      expect(json['author_is_me'], isTrue);
      expect(json['is_entity_subscribed_by_me'], isFalse);
      expect(json['author_place_in_rating'], 5);
    });
  });
}