/**
 * Tests for WiFi Password Secure Storage Service
 */

import * as SecureStore from 'expo-secure-store';
import AsyncStorage from '@react-native-async-storage/async-storage';
import {
  saveWiFiPassword,
  getWiFiPassword,
  getAllWiFiPasswords,
  removeWiFiPassword,
  clearAllWiFiPasswords,
  migrateFromAsyncStorage,
} from '../wifiPasswordStore';

// Mock SecureStore
jest.mock('expo-secure-store', () => ({
  setItemAsync: jest.fn(),
  getItemAsync: jest.fn(),
  deleteItemAsync: jest.fn(),
}));

// Mock AsyncStorage
jest.mock('@react-native-async-storage/async-storage', () => ({
  default: {
    getItem: jest.fn(),
    removeItem: jest.fn(),
  },
}));

describe('wifiPasswordStore', () => {
  beforeEach(() => {
    jest.clearAllMocks();
  });

  describe('saveWiFiPassword', () => {
    it('should save a new WiFi password', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      await saveWiFiPassword('MyNetwork', 'password123');

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ MyNetwork: 'password123' })
      );
    });

    it('should update an existing WiFi password', async () => {
      const existingPasswords = { Network1: 'pass1', Network2: 'pass2' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(existingPasswords)
      );

      await saveWiFiPassword('Network1', 'newpass1');

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ Network1: 'newpass1', Network2: 'pass2' })
      );
    });

    it('should add password to existing map', async () => {
      const existingPasswords = { Network1: 'pass1' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(existingPasswords)
      );

      await saveWiFiPassword('Network2', 'pass2');

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ Network1: 'pass1', Network2: 'pass2' })
      );
    });
  });

  describe('getWiFiPassword', () => {
    it('should return password for existing network', async () => {
      const passwords = { MyNetwork: 'password123', OtherNetwork: 'pass456' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      const password = await getWiFiPassword('MyNetwork');

      expect(password).toBe('password123');
    });

    it('should return undefined for non-existing network', async () => {
      const passwords = { MyNetwork: 'password123' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      const password = await getWiFiPassword('NonExistent');

      expect(password).toBeUndefined();
    });

    it('should return undefined when no passwords saved', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      const password = await getWiFiPassword('MyNetwork');

      expect(password).toBeUndefined();
    });

    it('should handle SecureStore errors gracefully', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockRejectedValueOnce(
        new Error('SecureStore error')
      );

      const password = await getWiFiPassword('MyNetwork');

      expect(password).toBeUndefined();
    });
  });

  describe('getAllWiFiPasswords', () => {
    it('should return all saved passwords', async () => {
      const passwords = { Network1: 'pass1', Network2: 'pass2', Network3: 'pass3' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      const result = await getAllWiFiPasswords();

      expect(result).toEqual(passwords);
    });

    it('should return empty object when no passwords saved', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      const result = await getAllWiFiPasswords();

      expect(result).toEqual({});
    });

    it('should handle SecureStore errors gracefully', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockRejectedValueOnce(
        new Error('SecureStore error')
      );

      const result = await getAllWiFiPasswords();

      expect(result).toEqual({});
    });
  });

  describe('removeWiFiPassword', () => {
    it('should remove specific network password', async () => {
      const passwords = { Network1: 'pass1', Network2: 'pass2', Network3: 'pass3' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      await removeWiFiPassword('Network2');

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ Network1: 'pass1', Network3: 'pass3' })
      );
    });

    it('should delete key when removing last password', async () => {
      const passwords = { Network1: 'pass1' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      await removeWiFiPassword('Network1');

      expect(SecureStore.deleteItemAsync).toHaveBeenCalledWith('WIFI_PASSWORDS');
      expect(SecureStore.setItemAsync).not.toHaveBeenCalled();
    });

    it('should handle removal of non-existent network', async () => {
      const passwords = { Network1: 'pass1', Network2: 'pass2' };
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(passwords)
      );

      await removeWiFiPassword('NonExistent');

      // Should still update the store with unchanged passwords
      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify(passwords)
      );
    });
  });

  describe('clearAllWiFiPasswords', () => {
    it('should delete all WiFi passwords', async () => {
      await clearAllWiFiPasswords();

      expect(SecureStore.deleteItemAsync).toHaveBeenCalledWith('WIFI_PASSWORDS');
    });

    it('should handle errors gracefully', async () => {
      (SecureStore.deleteItemAsync as jest.Mock).mockRejectedValueOnce(
        new Error('Delete failed')
      );

      await expect(clearAllWiFiPasswords()).rejects.toThrow('Delete failed');
    });
  });

  describe('migrateFromAsyncStorage', () => {
    it('should migrate passwords from AsyncStorage to SecureStore', async () => {
      const oldPasswords = { Network1: 'pass1', Network2: 'pass2' };

      // No existing data in SecureStore
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      // Old data in AsyncStorage
      (AsyncStorage.getItem as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(oldPasswords)
      );

      await migrateFromAsyncStorage();

      // Should save to SecureStore
      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify(oldPasswords)
      );

      // Should remove from AsyncStorage
      expect(AsyncStorage.removeItem).toHaveBeenCalledWith('WIFI_PASSWORDS');
      expect(AsyncStorage.removeItem).toHaveBeenCalledWith('LAST_WIFI_PASSWORD');
    });

    it('should skip migration if data already exists in SecureStore', async () => {
      const existingPasswords = { Network1: 'pass1' };

      // Data already exists in SecureStore
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(
        JSON.stringify(existingPasswords)
      );

      await migrateFromAsyncStorage();

      // Should not call AsyncStorage
      expect(AsyncStorage.getItem).not.toHaveBeenCalled();
      expect(SecureStore.setItemAsync).not.toHaveBeenCalled();
    });

    it('should skip migration if no data in AsyncStorage', async () => {
      // No data in SecureStore
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      // No data in AsyncStorage
      (AsyncStorage.getItem as jest.Mock).mockResolvedValueOnce(null);

      await migrateFromAsyncStorage();

      // Should not migrate anything
      expect(SecureStore.setItemAsync).not.toHaveBeenCalled();
      expect(AsyncStorage.removeItem).not.toHaveBeenCalled();
    });

    it('should not throw error on migration failure', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);
      (AsyncStorage.getItem as jest.Mock).mockRejectedValueOnce(
        new Error('AsyncStorage error')
      );

      // Should not throw
      await expect(migrateFromAsyncStorage()).resolves.toBeUndefined();
    });
  });

  describe('Special characters in SSID and password', () => {
    it('should handle special characters in SSID', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      const ssid = "Network's-Name!@#$%^&*()";
      const password = 'password123';

      await saveWiFiPassword(ssid, password);

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ [ssid]: password })
      );
    });

    it('should handle special characters in password', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      const ssid = 'MyNetwork';
      const password = "P@ssw0rd!#$%^&*()_+-=[]{}|;':,.<>?";

      await saveWiFiPassword(ssid, password);

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ [ssid]: password })
      );
    });

    it('should handle unicode characters', async () => {
      (SecureStore.getItemAsync as jest.Mock).mockResolvedValueOnce(null);

      const ssid = '我的网络';
      const password = 'пароль123';

      await saveWiFiPassword(ssid, password);

      expect(SecureStore.setItemAsync).toHaveBeenCalledWith(
        'WIFI_PASSWORDS',
        JSON.stringify({ [ssid]: password })
      );
    });
  });
});