/**
 * Tests for WiFi Credentials Validation
 */

import {
  validateSSID,
  validatePassword,
  validateWiFiCredentials,
  isStrongPassword,
  sanitizeWiFiCredentials,
  getValidationErrorMessage,
  getValidationMessage,
  validateRealTime,
  parseWiFiErrorResponse,
  prepareCredentialsForDevice,
} from '../wifiValidation';

describe('WiFi Validation', () => {
  describe('validateSSID', () => {
    it('should accept valid SSIDs', () => {
      const validSSIDs = [
        'MyHomeWiFi',
        'Guest Network',
        'Office-5G',
        'Café WiFi',
        'Network_2.4GHz',
        'a',
        '1234567890123456789012345678901', // 31 chars
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ123456', // 32 chars
      ];

      validSSIDs.forEach((ssid) => {
        const result = validateSSID(ssid);
        expect(result.valid).toBe(true);
        expect(result.errors).toHaveLength(0);
      });
    });

    it('should reject empty SSID', () => {
      const result = validateSSID('');
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Network name (SSID) cannot be empty');
    });

    it('should reject whitespace-only SSID', () => {
      const result = validateSSID('   ');
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Network name (SSID) cannot be empty');
    });

    it('should reject SSID longer than 32 bytes', () => {
      const longSSID = 'A'.repeat(33);
      const result = validateSSID(longSSID);
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Network name is too long (max 32 bytes)');
    });

    it('should reject SSID with control characters', () => {
      const result = validateSSID('Network\x00Name');
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Network name contains invalid control characters');
    });

    it('should warn about leading/trailing spaces', () => {
      const result1 = validateSSID(' MyWiFi');
      expect(result1.valid).toBe(true);
      expect(result1.warnings).toContain(
        'Network name has leading or trailing spaces - this may cause connection issues'
      );

      const result2 = validateSSID('MyWiFi ');
      expect(result2.valid).toBe(true);
      expect(result2.warnings).toContain(
        'Network name has leading or trailing spaces - this may cause connection issues'
      );
    });

    it('should warn about multiple consecutive spaces', () => {
      const result = validateSSID('My  WiFi');
      expect(result.valid).toBe(true);
      expect(result.warnings).toContain('Network name has multiple consecutive spaces');
    });
  });

  describe('validatePassword', () => {
    describe('WPA/WPA2/WPA3 networks', () => {
      it('should accept valid WPA passwords', () => {
        const validPasswords = [
          'MySecurePass123',
          'abcdefgh', // 8 chars minimum
          'A'.repeat(63), // 63 chars maximum
          'Pass with spaces!@#',
          'ComplexP@ssw0rd!',
        ];

        validPasswords.forEach((password) => {
          const result = validatePassword(password, 'WPA2 PSK');
          expect(result.valid).toBe(true);
          expect(result.errors).toHaveLength(0);
        });
      });

      it('should reject passwords shorter than 8 characters', () => {
        const result = validatePassword('1234567', 'WPA2 PSK');
        expect(result.valid).toBe(false);
        expect(result.errors).toContain(
          'Password must be at least 8 characters for WPA/WPA2/WPA3 networks'
        );
      });

      it('should reject passwords longer than 63 characters', () => {
        const longPassword = 'A'.repeat(64);
        const result = validatePassword(longPassword, 'WPA2 PSK');
        expect(result.valid).toBe(false);
        expect(result.errors).toContain(
          'Password cannot exceed 63 characters for WPA/WPA2/WPA3 networks'
        );
      });

      it('should warn about weak passwords', () => {
        const result = validatePassword('12345678', 'WPA2 PSK');
        expect(result.valid).toBe(true);
        expect(result.warnings).toContain('Password is weak - consider using at least 12 characters');
      });

      it('should warn about commonly used weak passwords', () => {
        const weakPasswords = ['password', '12345678', 'qwerty123'];

        weakPasswords.forEach((password) => {
          const result = validatePassword(password, 'WPA2 PSK');
          expect(result.warnings).toContain('This is a commonly used weak password');
        });
      });

      it('should warn about numeric-only passwords', () => {
        const result = validatePassword('12345678', 'WPA2 PSK');
        expect(result.warnings).toContain(
          'Password contains only numbers - consider adding letters and symbols'
        );
      });

      it('should warn about non-ASCII characters', () => {
        const result = validatePassword('Password™123', 'WPA2 PSK');
        expect(result.valid).toBe(true);
        expect(result.warnings).toContain(
          'Password contains non-ASCII characters - this may cause issues on some devices'
        );
      });
    });

    describe('Open networks', () => {
      it('should accept empty password for open networks', () => {
        const result = validatePassword('', 'Open');
        expect(result.valid).toBe(true);
        expect(result.errors).toHaveLength(0);
      });

      it('should accept any password for open networks (will be ignored)', () => {
        const result = validatePassword('any password', 'Open');
        expect(result.valid).toBe(true);
      });
    });

    describe('WEP networks', () => {
      it('should accept valid 5-character WEP password', () => {
        const result = validatePassword('abcde', 'WEP');
        expect(result.valid).toBe(true);
        expect(result.warnings).toContain(
          'WEP is deprecated and insecure - consider upgrading your router to WPA2/WPA3'
        );
      });

      it('should accept valid 13-character WEP password', () => {
        const result = validatePassword('abcdefghijklm', 'WEP');
        expect(result.valid).toBe(true);
      });

      it('should accept valid 10-digit hex WEP password', () => {
        const result = validatePassword('1234567890', 'WEP');
        expect(result.valid).toBe(true);
      });

      it('should accept valid 26-digit hex WEP password', () => {
        const result = validatePassword('12345678901234567890123456', 'WEP');
        expect(result.valid).toBe(true);
      });

      it('should reject invalid WEP password length', () => {
        const result = validatePassword('abc', 'WEP');
        expect(result.valid).toBe(false);
        expect(result.errors).toContain(
          'WEP password must be 5 or 13 ASCII characters, or 10/26 hexadecimal digits'
        );
      });
    });

    describe('Secured networks without auth type', () => {
      it('should require password', () => {
        const result = validatePassword('');
        expect(result.valid).toBe(false);
        expect(result.errors).toContain('Password is required for secured networks');
      });

      it('should apply WPA rules by default', () => {
        const result = validatePassword('1234567'); // 7 chars
        expect(result.valid).toBe(false);
        expect(result.errors).toContain(
          'Password must be at least 8 characters for WPA/WPA2/WPA3 networks'
        );
      });
    });

    it('should reject passwords with control characters', () => {
      const result = validatePassword('Pass\x00word123', 'WPA2 PSK');
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Password contains invalid control characters');
    });
  });

  describe('validateWiFiCredentials', () => {
    it('should validate both SSID and password', () => {
      const result = validateWiFiCredentials('MyWiFi', 'SecurePass123', 'WPA2 PSK');
      expect(result.valid).toBe(true);
      expect(result.errors).toHaveLength(0);
    });

    it('should combine errors from both validations', () => {
      const result = validateWiFiCredentials('', '123', 'WPA2 PSK');
      expect(result.valid).toBe(false);
      expect(result.errors).toContain('Network name (SSID) cannot be empty');
      expect(result.errors).toContain(
        'Password must be at least 8 characters for WPA/WPA2/WPA3 networks'
      );
    });

    it('should combine warnings from both validations', () => {
      const result = validateWiFiCredentials(' MyWiFi ', 'password123', 'WPA2 PSK');
      expect(result.valid).toBe(true);
      expect(result.warnings.length).toBeGreaterThan(0);
    });

    it('should validate open network correctly', () => {
      const result = validateWiFiCredentials('GuestNetwork', '', 'Open');
      expect(result.valid).toBe(true);
    });
  });

  describe('isStrongPassword', () => {
    it('should accept strong passwords', () => {
      const strongPasswords = [
        'MyP@ssw0rd123!',
        'Secure_Password_2024',
        'Compl3x!P@ssw0rd',
        'abCD1234!@#$',
      ];

      strongPasswords.forEach((password) => {
        expect(isStrongPassword(password)).toBe(true);
      });
    });

    it('should reject passwords shorter than 12 characters', () => {
      expect(isStrongPassword('P@ssw0rd')).toBe(false);
    });

    it('should reject passwords with less than 3 character types', () => {
      expect(isStrongPassword('onlylowercase')).toBe(false);
      expect(isStrongPassword('12345678901234')).toBe(false);
      expect(isStrongPassword('ONLYUPPERCASE')).toBe(false);
    });

    it('should accept passwords with 3 or 4 character types', () => {
      // 3 types: lowercase, uppercase, numbers
      expect(isStrongPassword('Password1234')).toBe(true);

      // 4 types: lowercase, uppercase, numbers, special
      expect(isStrongPassword('P@ssword1234')).toBe(true);
    });
  });

  describe('sanitizeWiFiCredentials', () => {
    it('should trim SSID whitespace', () => {
      const result = sanitizeWiFiCredentials({
        ssid: '  MyWiFi  ',
        password: 'password',
      });
      expect(result.ssid).toBe('MyWiFi');
    });

    it('should preserve password whitespace', () => {
      const result = sanitizeWiFiCredentials({
        ssid: 'MyWiFi',
        password: '  password with spaces  ',
      });
      expect(result.password).toBe('  password with spaces  ');
    });

    it('should not modify valid credentials', () => {
      const result = sanitizeWiFiCredentials({
        ssid: 'MyWiFi',
        password: 'SecurePass123',
      });
      expect(result.ssid).toBe('MyWiFi');
      expect(result.password).toBe('SecurePass123');
    });
  });

  describe('getValidationErrorMessage', () => {
    it('should return empty string for valid credentials', () => {
      const result = validateWiFiCredentials('MyWiFi', 'SecurePass123', 'WPA2 PSK');
      expect(getValidationErrorMessage(result)).toBe('');
    });

    it('should return first error message', () => {
      const result = validateWiFiCredentials('', '123', 'WPA2 PSK');
      expect(getValidationErrorMessage(result)).toBe('Network name (SSID) cannot be empty');
    });

    it('should return default message if no specific error', () => {
      const result = { valid: false, errors: [], warnings: [] };
      expect(getValidationErrorMessage(result)).toBe('Invalid WiFi credentials');
    });
  });

  describe('getValidationMessage', () => {
    it('should return empty string for valid credentials with no warnings', () => {
      const result = { valid: true, errors: [], warnings: [] };
      expect(getValidationMessage(result)).toBe('');
    });

    it('should return errors only', () => {
      const result = {
        valid: false,
        errors: ['Error 1', 'Error 2'],
        warnings: [],
      };
      expect(getValidationMessage(result)).toBe('Error 1\nError 2');
    });

    it('should return warnings only', () => {
      const result = {
        valid: true,
        errors: [],
        warnings: ['Warning 1', 'Warning 2'],
      };
      expect(getValidationMessage(result)).toBe('Warning 1\nWarning 2');
    });

    it('should return both errors and warnings', () => {
      const result = {
        valid: false,
        errors: ['Error 1'],
        warnings: ['Warning 1'],
      };
      expect(getValidationMessage(result)).toBe('Error 1\nWarning 1');
    });
  });

  describe('validateRealTime', () => {
    it('should return valid state for valid credentials', () => {
      const result = validateRealTime('MyWiFi', 'SecurePass123', 'WPA2 PSK');
      expect(result.ssidValid).toBe(true);
      expect(result.passwordValid).toBe(true);
      expect(result.canSubmit).toBe(true);
      expect(result.ssidError).toBeNull();
      expect(result.passwordError).toBeNull();
    });

    it('should indicate password strength', () => {
      // Weak password (8-9 chars)
      const weak = validateRealTime('MyWiFi', 'password', 'WPA2 PSK');
      expect(weak.passwordStrength).toBe('weak');

      // Medium password (10+ chars but not complex)
      const medium = validateRealTime('MyWiFi', 'mediumpassword', 'WPA2 PSK');
      expect(medium.passwordStrength).toBe('medium');

      // Strong password (12+ chars with variety)
      const strong = validateRealTime('MyWiFi', 'Str0ng!Pass123', 'WPA2 PSK');
      expect(strong.passwordStrength).toBe('strong');
    });

    it('should handle open networks', () => {
      const result = validateRealTime('GuestNetwork', '', 'Open');
      expect(result.passwordValid).toBe(true);
      expect(result.passwordStrength).toBeNull();
      expect(result.canSubmit).toBe(true);
    });

    it('should not allow submit with short password', () => {
      const result = validateRealTime('MyWiFi', '1234567', 'WPA2 PSK');
      expect(result.canSubmit).toBe(false);
      expect(result.passwordValid).toBe(false);
    });

    it('should not allow submit with empty SSID', () => {
      const result = validateRealTime('', 'password123', 'WPA2 PSK');
      expect(result.canSubmit).toBe(false);
    });

    it('should collect warnings', () => {
      const result = validateRealTime(' MyWiFi', 'password', 'WPA2 PSK');
      expect(result.warnings.length).toBeGreaterThan(0);
    });

    it('should return null strength for empty password', () => {
      const result = validateRealTime('MyWiFi', '', 'WPA2 PSK');
      expect(result.passwordStrength).toBeNull();
    });
  });

  describe('parseWiFiErrorResponse', () => {
    it('should detect wrong password errors', () => {
      const errors = [
        'WiFi credentials rejected by sensor',
        'wrong password',
        'check password',
        'W|fail response',
      ];

      errors.forEach((error) => {
        const result = parseWiFiErrorResponse(error);
        expect(result.type).toBe('password_wrong');
        expect(result.suggestion).toContain('check');
      });
    });

    it('should detect network not found errors', () => {
      const errors = [
        'Network not found',
        'no network available',
        'SSID not available',
      ];

      errors.forEach((error) => {
        const result = parseWiFiErrorResponse(error);
        expect(result.type).toBe('network_not_found');
        expect(result.suggestion).toContain('range');
      });
    });

    it('should detect timeout errors', () => {
      const errors = [
        'Command timeout',
        'Request timed out',
        'Sensor did not respond in time',
      ];

      errors.forEach((error) => {
        const result = parseWiFiErrorResponse(error);
        expect(result.type).toBe('timeout');
        expect(result.suggestion).toContain('closer');
      });
    });

    it('should detect connection errors', () => {
      const errors = [
        'BLE connection failed',
        'Bluetooth error',
        'Could not connect to device',
      ];

      errors.forEach((error) => {
        const result = parseWiFiErrorResponse(error);
        expect(result.type).toBe('connection_failed');
        expect(result.suggestion).toContain('try again');
      });
    });

    it('should return unknown for unrecognized errors', () => {
      const result = parseWiFiErrorResponse('Some random error message');
      expect(result.type).toBe('unknown');
      expect(result.message).toBe('WiFi configuration failed');
    });
  });

  describe('prepareCredentialsForDevice', () => {
    it('should return sanitized credentials for valid input', () => {
      const result = prepareCredentialsForDevice('  MyWiFi  ', 'password123', 'WPA2 PSK');
      expect(result.ssid).toBe('MyWiFi');
      expect(result.password).toBe('password123');
    });

    it('should throw for invalid SSID with pipe character', () => {
      expect(() => {
        prepareCredentialsForDevice('My|WiFi', 'password123', 'WPA2 PSK');
      }).toThrow('Network name contains invalid characters');
    });

    it('should throw for invalid SSID with comma character', () => {
      expect(() => {
        prepareCredentialsForDevice('My,WiFi', 'password123', 'WPA2 PSK');
      }).toThrow('Network name contains invalid characters');
    });

    it('should throw for password with pipe character', () => {
      expect(() => {
        prepareCredentialsForDevice('MyWiFi', 'pass|word', 'WPA2 PSK');
      }).toThrow('Password contains invalid character');
    });

    it('should allow password with comma character', () => {
      // Comma is allowed in password (only pipe is delimiter between command and payload)
      const result = prepareCredentialsForDevice('MyWiFi', 'pass,word123', 'WPA2 PSK');
      expect(result.password).toBe('pass,word123');
    });

    it('should throw for empty SSID', () => {
      expect(() => {
        prepareCredentialsForDevice('', 'password123', 'WPA2 PSK');
      }).toThrow('Network name (SSID) cannot be empty');
    });

    it('should throw for short password', () => {
      expect(() => {
        prepareCredentialsForDevice('MyWiFi', 'short', 'WPA2 PSK');
      }).toThrow('at least 8 characters');
    });

    it('should allow empty password for open networks', () => {
      const result = prepareCredentialsForDevice('GuestNetwork', '', 'Open');
      expect(result.ssid).toBe('GuestNetwork');
      expect(result.password).toBe('');
    });
  });
});