import { MockDatabaseStrategy } from '../MockDatabaseStrategy';
import { AccountStatus } from '../../auth/auth.constants';
import { Frequency } from '../../../types';

describe('MockDatabaseStrategy', () => {
  let strategy: MockDatabaseStrategy;

  beforeEach(() => {
    strategy = new MockDatabaseStrategy();
  });

  describe('user operations', () => {
    test('should create user with auto-generated ID', async () => {
      const userData = {
        username: 'testuser',
        email: 'test@example.com',
      };

      const user = await strategy.createUser(userData);

      expect(user._id).toBeDefined();
      expect(user._rev).toBeDefined();
      expect(user.username).toBe('testuser');
      expect(user.email).toBe('test@example.com');
      expect(user.createdAt).toBeInstanceOf(Date);
    });

    test('should create user with password', async () => {
      const user = await strategy.createUserWithPassword(
        'test@example.com',
        'hashedpassword',
        'testuser'
      );

      expect(user.email).toBe('test@example.com');
      expect(user.password).toBe('hashedpassword');
      expect(user.username).toBe('testuser');
      expect(user.status).toBe(AccountStatus.PENDING);
      expect(user.emailVerified).toBe(false);
    });

    test('should create OAuth user', async () => {
      const user = await strategy.createUserFromOAuth(
        'oauth@example.com',
        'OAuth User',
        'google'
      );

      expect(user.email).toBe('oauth@example.com');
      expect(user.username).toBe('OAuth User');
      expect(user.status).toBe(AccountStatus.ACTIVE);
      expect(user.emailVerified).toBe(true);
    });

    test('should find user by email', async () => {
      const createdUser = await strategy.createUserWithPassword(
        'findme@example.com',
        'password',
        'finduser'
      );

      const foundUser = await strategy.findUserByEmail('findme@example.com');

      expect(foundUser?._id).toBe(createdUser._id);
      expect(foundUser?.email).toBe(createdUser.email);
      expect(foundUser?.username).toBe(createdUser.username);
    });

    test('should return null when user not found by email', async () => {
      const user = await strategy.findUserByEmail('notfound@example.com');
      expect(user).toBeNull();
    });

    test('should get user by ID', async () => {
      const createdUser = await strategy.createUser({
        username: 'testuser',
        email: 'test@example.com',
      });

      const foundUser = await strategy.getUserById(createdUser._id);

      expect(foundUser?._id).toBe(createdUser._id);
      expect(foundUser?.email).toBe(createdUser.email);
      expect(foundUser?.username).toBe(createdUser.username);
    });

    test('should return null when user not found by ID', async () => {
      const user = await strategy.getUserById('nonexistent-id');
      expect(user).toBeNull();
    });

    test('should update user', async () => {
      const createdUser = await strategy.createUser({
        username: 'original',
        email: 'original@example.com',
      });

      const updatedUser = await strategy.updateUser({
        ...createdUser,
        username: 'updated',
      });

      expect(updatedUser.username).toBe('updated');
      expect(updatedUser._id).toBe(createdUser._id);
      expect(updatedUser._rev).not.toBe(createdUser._rev);
    });

    test('should delete user', async () => {
      const createdUser = await strategy.createUser({
        username: 'tobedeleted',
        email: 'delete@example.com',
      });

      const result = await strategy.deleteUser(createdUser._id);
      expect(result).toBe(true);

      const deletedUser = await strategy.getUserById(createdUser._id);
      expect(deletedUser).toBeNull();
    });

    test('should get all users', async () => {
      await strategy.createUser({
        username: 'user1',
        email: 'user1@example.com',
      });
      await strategy.createUser({
        username: 'user2',
        email: 'user2@example.com',
      });

      const users = await strategy.getAllUsers();

      expect(users).toHaveLength(2);
      expect(users[0].username).toBe('user1');
      expect(users[1].username).toBe('user2');
    });
  });

  describe('medication operations', () => {
    let userId: string;

    beforeEach(async () => {
      const user = await strategy.createUser({
        username: 'meduser',
        email: 'med@example.com',
      });
      userId = user._id;
    });

    test('should create medication', async () => {
      const medicationData = {
        name: 'Aspirin',
        dosage: '100mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: 'Take with food',
      };

      const medication = await strategy.createMedication(
        userId,
        medicationData
      );

      expect(medication._id).toBeDefined();
      expect(medication._rev).toBeDefined();
      expect(medication.name).toBe('Aspirin');
      expect(medication.dosage).toBe('100mg');
      expect(medication.frequency).toBe(Frequency.Daily);
    });

    test('should get medications for user', async () => {
      await strategy.createMedication(userId, {
        name: 'Med1',
        dosage: '10mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: '',
      });

      await strategy.createMedication(userId, {
        name: 'Med2',
        dosage: '20mg',
        frequency: Frequency.TwiceADay,
        startTime: '12:00',
        notes: '',
      });

      const medications = await strategy.getMedications(userId);

      expect(medications).toHaveLength(2);
      expect(medications[0].name).toBe('Med1');
      expect(medications[1].name).toBe('Med2');
    });

    test('should update medication', async () => {
      const created = await strategy.createMedication(userId, {
        name: 'Original',
        dosage: '10mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: '',
      });

      const updated = await strategy.updateMedication({
        ...created,
        name: 'Updated',
        dosage: '20mg',
      });

      expect(updated.name).toBe('Updated');
      expect(updated.dosage).toBe('20mg');
      expect(updated._rev).not.toBe(created._rev);
    });

    test('should delete medication', async () => {
      const created = await strategy.createMedication(userId, {
        name: 'ToDelete',
        dosage: '10mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: '',
      });

      const result = await strategy.deleteMedication(created._id);
      expect(result).toBe(true);

      const medications = await strategy.getMedications(userId);
      expect(medications).toHaveLength(0);
    });
  });

  describe('user settings operations', () => {
    let userId: string;

    beforeEach(async () => {
      const user = await strategy.createUser({
        username: 'settingsuser',
        email: 'settings@example.com',
      });
      userId = user._id;
    });

    test('should get default user settings', async () => {
      const settings = await strategy.getUserSettings(userId);

      expect(settings._id).toBe(userId);
      expect(settings._rev).toBeDefined();
      expect(settings.notificationsEnabled).toBe(true);
      expect(settings.hasCompletedOnboarding).toBe(false);
    });

    test('should update user settings', async () => {
      const currentSettings = await strategy.getUserSettings(userId);

      const updatedSettings = await strategy.updateUserSettings({
        ...currentSettings,
        notificationsEnabled: false,
        hasCompletedOnboarding: true,
      });

      expect(updatedSettings.notificationsEnabled).toBe(false);
      expect(updatedSettings.hasCompletedOnboarding).toBe(true);
      expect(updatedSettings._rev).not.toBe(currentSettings._rev);
    });
  });

  describe('taken doses operations', () => {
    let userId: string;

    beforeEach(async () => {
      const user = await strategy.createUser({
        username: 'dosesuser',
        email: 'doses@example.com',
      });
      userId = user._id;
    });

    test('should get default taken doses', async () => {
      const takenDoses = await strategy.getTakenDoses(userId);

      expect(takenDoses._id).toBe(userId);
      expect(takenDoses._rev).toBeDefined();
      expect(takenDoses.doses).toEqual({});
    });

    test('should update taken doses', async () => {
      const currentDoses = await strategy.getTakenDoses(userId);

      const updatedDoses = await strategy.updateTakenDoses({
        ...currentDoses,
        doses: {
          'med1-2024-01-01': new Date().toISOString(),
        },
      });

      expect(Object.keys(updatedDoses.doses)).toHaveLength(1);
      expect(updatedDoses.doses['med1-2024-01-01']).toBeTruthy();
    });
  });

  describe('custom reminders operations', () => {
    let userId: string;

    beforeEach(async () => {
      const user = await strategy.createUser({
        username: 'reminderuser',
        email: 'reminder@example.com',
      });
      userId = user._id;
    });

    test('should create custom reminder', async () => {
      const reminderData = {
        title: 'Drink Water',
        icon: '💧',
        startTime: '08:00',
        endTime: '20:00',
        frequencyMinutes: 60,
      };

      const reminder = await strategy.createCustomReminder(
        userId,
        reminderData
      );

      expect(reminder._id).toBeDefined();
      expect(reminder._rev).toBeDefined();
      expect(reminder.title).toBe('Drink Water');
      expect(reminder.icon).toBe('💧');
      expect(reminder.frequencyMinutes).toBe(60);
    });

    test('should get custom reminders for user', async () => {
      await strategy.createCustomReminder(userId, {
        title: 'Reminder 1',
        icon: '⏰',
        startTime: '09:00',
        endTime: '17:00',
        frequencyMinutes: 30,
      });

      const reminders = await strategy.getCustomReminders(userId);

      expect(reminders).toHaveLength(1);
      expect(reminders[0].title).toBe('Reminder 1');
    });

    test('should update custom reminder', async () => {
      const created = await strategy.createCustomReminder(userId, {
        title: 'Original',
        icon: '⏰',
        startTime: '09:00',
        endTime: '17:00',
        frequencyMinutes: 30,
      });

      const updated = await strategy.updateCustomReminder({
        ...created,
        title: 'Updated',
        frequencyMinutes: 60,
      });

      expect(updated.title).toBe('Updated');
      expect(updated.frequencyMinutes).toBe(60);
      expect(updated._rev).not.toBe(created._rev);
    });

    test('should delete custom reminder', async () => {
      const created = await strategy.createCustomReminder(userId, {
        title: 'ToDelete',
        icon: '⏰',
        startTime: '09:00',
        endTime: '17:00',
        frequencyMinutes: 30,
      });

      const result = await strategy.deleteCustomReminder(created._id);
      expect(result).toBe(true);

      const reminders = await strategy.getCustomReminders(userId);
      expect(reminders).toHaveLength(0);
    });
  });

  describe('error handling', () => {
    test('should create new document when updating non-existent user', async () => {
      const result = await strategy.updateUser({
        _id: 'nonexistent',
        _rev: 'rev',
        username: 'test',
      });

      expect(result._id).toBe('nonexistent');
      expect(result.username).toBe('test');
    });

    test('should create new document when updating non-existent medication', async () => {
      const result = await strategy.updateMedication({
        _id: 'nonexistent',
        _rev: 'rev',
        name: 'test',
        dosage: '10mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: '',
      });

      expect(result._id).toBe('nonexistent');
      expect(result.name).toBe('test');
    });

    test('should return false when deleting non-existent user', async () => {
      const result = await strategy.deleteUser('nonexistent');
      expect(result).toBe(false);
    });

    test('should return false when deleting non-existent medication', async () => {
      const result = await strategy.deleteMedication('nonexistent');
      expect(result).toBe(false);
    });
  });

  describe('data persistence', () => {
    test('should maintain data across multiple operations', async () => {
      // Create user
      const user = await strategy.createUser({
        username: 'persistent',
        email: 'persistent@example.com',
      });

      // Create medication
      const medication = await strategy.createMedication(user._id, {
        name: 'Persistent Med',
        dosage: '10mg',
        frequency: Frequency.Daily,
        startTime: '08:00',
        notes: '',
      });

      // Verify data persists
      const retrievedUser = await strategy.getUserById(user._id);
      const medications = await strategy.getMedications(user._id);

      expect(retrievedUser?._id).toBe(user._id);
      expect(retrievedUser?.username).toBe(user.username);
      expect(medications).toHaveLength(1);
      expect(medications[0]._id).toBe(medication._id);
      expect(medications[0].name).toBe(medication.name);
    });
  });
});