import 'dart:ui';

import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/mockito.dart';
import 'package:moody/utils/definitions/color_pair.dart';
import 'package:moody/utils/logic/preferences_service.dart';
import 'package:shared_preferences/shared_preferences.dart';

class MockSharedPreferences extends Mock implements SharedPreferences {}

void main() {
  group('PreferencesService Tests', () {
    MockSharedPreferences mockPrefs;
    PreferencesService service = PreferencesService();

    setUp(() {
      mockPrefs = MockSharedPreferences();
      SharedPreferences.setMockInitialValues({}); // Set initial values for mocks
    });

    test('saveColorPair and loadColorPair should work correctly', () async {
      var testColorPair = ColorPair(name: "test", textColor: Color(0xff123456), backgroundColor: Color(0xff654321));

      // Save color pair
      await service.saveColorPair(testColorPair);

      // Load color pair
      var loadedColorPair = await service.loadColorPair();

      // Compare values
      expect(loadedColorPair.textColor.value, equals(testColorPair.textColor.value));
      expect(loadedColorPair.backgroundColor.value, equals(testColorPair.backgroundColor.value));
    });

    test('loadColorPair should return default value if none set', () async {
      // Load color pair without setting any value
      var defaultColorPair = await service.loadColorPair();

      // Verify default values
      expect(defaultColorPair, equals(colorPairs[0]));
    });
    // Test for setting and checking PIN
    test('setPin and checkPin should work correctly', () async {
      const int testPin = 1234;

      // Set PIN
      await service.setPin(testPin);

      // Check PIN
      bool isCorrectPin = await service.checkPin(testPin);
      expect(isCorrectPin, isTrue);

      // Check with incorrect PIN
      isCorrectPin = await service.checkPin(9999);
      expect(isCorrectPin, isFalse);
    });

    test('enablePin should enable PIN if it\'s already set', () async {
      // Set PIN
      const int testPin = 1234;
      await service.setPin(testPin);

      // Attempt to enable PIN
      await service.enablePin();
      var isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isTrue);

      // Disable PIN again
      await service.disablePin();
      isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isFalse);
    });

    // Test for enabling PIN only if it's set
    test('enablePin should only enable if a PIN is set', () async {
      // Assuming no PIN is set initially
      await service.disablePin();

      // Attempt to enable PIN without setting it
      await service.enablePin();
      var isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isFalse);

      // Set PIN and then enable it
      const int testPin = 1234;
      await service.setPin(testPin);
      await service.enablePin();
      isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isTrue);

      // Disable PIN again
      await service.disablePin();
      isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isFalse);
    });

    // Test for isPinEnabled
    test('isPinEnabled should return correct status', () async {
      // Assuming PIN is not set
      bool isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isFalse);

      // After setting and enabling PIN
      await service.setPin(1234);
      await service.enablePin();
      isPinEnabled = await service.isPinEnabled();
      expect(isPinEnabled, isTrue);
    });
    // Test for calculateStreak
    test('calculateStreak should return the correct streak count', () async {
      // Scenario 1: Consecutive diary entries
      await service.saveDiaryEntry(DiaryEntry(date: DateTime.now(), percentValue: 80, texts: ["Entry 1"]));
      await service.saveDiaryEntry(DiaryEntry(date: DateTime.now().subtract(const Duration(days: 1)), percentValue: 90, texts: ["Entry 2"]));
      await service.saveDiaryEntry(DiaryEntry(date: DateTime.now().subtract(const Duration(days: 2)), percentValue: 95, texts: ["Entry 3"]));

      var streakCount = await service.calculateStreak();
      expect(streakCount, equals(3));

      // Scenario 2: Missing entries in between
      await service.saveDiaryEntry(DiaryEntry(date: DateTime.now().subtract(const Duration(days: 2)), percentValue: 95, texts: ["Entry 2"]));

      streakCount = await service.calculateStreak();
      expect(streakCount, equals(3)); // Streak is broken due to missing entries

      // Scenario 3: No diary entries
      // No need to add entries here

      streakCount = await service.calculateStreak();
      expect(streakCount, equals(3)); // No entries, streak is 0
    });
    service = PreferencesService();
    // Test for getDiaryEntryByCurrentDate
    test('getDiaryEntryByCurrentDate should return the correct entry for the current date', () async {
      final currentDate = DateTime.now();
      final formattedDate = DateTime(currentDate.year, currentDate.month, currentDate.day);
      final DiaryEntry testEntry = DiaryEntry(
        date: formattedDate,
        percentValue: 80,
        texts: ["Entry for Today"],
      );

      // Save a test entry for the current date
      await service.saveDiaryEntry(testEntry);

      final DiaryEntry? retrievedEntry = await service.getDiaryEntryByCurrentDate();
      expect(retrievedEntry?.texts.join(" "), equals((testEntry?.texts.join(" "))));
      expect(retrievedEntry?.date, equals(formattedDate));
      expect(retrievedEntry?.percentValue, testEntry.percentValue);
    });

    // Test for getDiaryEntryByDate
    test('getDiaryEntryByCurrentDate should return the correct entry for the current date', () async {
      final currentDate = DateTime.now();
      final formattedDate = DateTime(currentDate.year, currentDate.month, currentDate.day);
      final DiaryEntry testEntry = DiaryEntry(
        date: formattedDate,
        percentValue: 80,
        texts: ["Entry for Today"],
      );

      // Save a test entry for the current date
      await service.saveDiaryEntry(testEntry);

      final DiaryEntry? retrievedEntry = await service.getDiaryEntryByCurrentDate();
      expect(retrievedEntry?.texts.join(" "), equals((testEntry?.texts.join(" "))));
      expect(retrievedEntry?.date, equals(formattedDate));
      expect(retrievedEntry?.percentValue, testEntry.percentValue);
    });

    test('saveDiaryEntry and loadDiaryEntries should work correctly', () async {
      final List<DiaryEntry> testEntries = [
        DiaryEntry(
          date: DateTime(2024, 1, 10), // Updated date format
          percentValue: 70,
          texts: ["Entry 1"],
        ),
        DiaryEntry(
          date: DateTime(2024, 1, 11), // Updated date format
          percentValue: 80,
          texts: ["Entry 2"],
        ),
        DiaryEntry(
          date: DateTime(2024, 1, 12), // Updated date format
          percentValue: 90,
          texts: ["Entry 3"],
        ),
      ];

      // Save test entries
      for (final entry in testEntries) {
        await service.saveDiaryEntry(entry);
      }

      // Load saved entries
      final List<DiaryEntry> loadedEntries = await service.loadDiaryEntries();

      // Compare loaded entries with test entries
      expect(loadedEntries.length, equals(testEntries.length));
      for (int i = 0; i < loadedEntries.length; i++) {
        expect(loadedEntries[i].date, equals(testEntries[i].date));
        expect(loadedEntries[i].percentValue, equals(testEntries[i].percentValue));
        expect(loadedEntries[i].texts, equals(testEntries[i].texts));
      }
    });
  });
}