import { describe, it, expect } from 'vitest';
import { 
  validateField, 
  validateFields, 
  validateEmail, 
  validatePhone, 
  validatePassword, 
  validateUsername,
  validatePlateNumber,
  validateYear,
  validateCurrency,
  sanitizeString,
  sanitizeNumber,
  sanitizeInteger,
  sanitizeFormData,
  PATTERNS 
} from '../validation-utils';

describe('Validation Utils', () => {
  describe('validateField', () => {
    it('should validate required fields', () => {
      const result1 = validateField('', { required: true });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('هذا الحقل مطلوب');

      const result2 = validateField('value', { required: true });
      expect(result2.isValid).toBe(true);
    });

    it('should validate email fields', () => {
      const result1 = validateField('invalid-email', { email: true });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('البريد الإلكتروني غير صحيح');

      const result2 = validateField('test@example.com', { email: true });
      expect(result2.isValid).toBe(true);
    });

    it('should validate phone fields', () => {
      const result1 = validateField('invalid-phone', { phone: true });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('رقم الهاتف غير صحيح');

      const result2 = validateField('+966501234567', { phone: true });
      expect(result2.isValid).toBe(true);
    });

    it('should validate length constraints', () => {
      const result1 = validateField('ab', { minLength: 3 });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('يجب أن يكون على الأقل 3 أحرف');

      const result2 = validateField('a'.repeat(101), { maxLength: 100 });
      expect(result2.isValid).toBe(false);
      expect(result2.error).toBe('يجب أن يكون أقل من 100 حرف');
    });

    it('should validate numeric constraints', () => {
      const result1 = validateField(5, { min: 10 });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('يجب أن يكون على الأقل 10');

      const result2 = validateField(15, { max: 10 });
      expect(result2.isValid).toBe(false);
      expect(result2.error).toBe('يجب أن يكون أقل من 10');
    });

    it('should validate custom rules', () => {
      const customRule = (value: any) => {
        return value === 'forbidden' ? 'هذه القيمة غير مسموحة' : null;
      };

      const result1 = validateField('forbidden', { custom: customRule });
      expect(result1.isValid).toBe(false);
      expect(result1.error).toBe('هذه القيمة غير مسموحة');

      const result2 = validateField('allowed', { custom: customRule });
      expect(result2.isValid).toBe(true);
    });
  });

  describe('validateFields', () => {
    it('should validate multiple fields', () => {
      const data = {
        name: '',
        email: 'invalid-email',
        age: 5,
      };

      const rules = {
        name: { required: true },
        email: { email: true },
        age: { min: 18 },
      };

      const result = validateFields(data, rules);
      expect(result.isValid).toBe(false);
      expect(result.errors.name).toBe('هذا الحقل مطلوب');
      expect(result.errors.email).toBe('البريد الإلكتروني غير صحيح');
      expect(result.errors.age).toBe('يجب أن يكون على الأقل 18');
    });
  });

  describe('specific validation functions', () => {
    it('should validate email', () => {
      const result1 = validateEmail('');
      expect(result1.isValid).toBe(false);

      const result2 = validateEmail('test@example.com');
      expect(result2.isValid).toBe(true);
    });

    it('should validate phone', () => {
      const result1 = validatePhone('invalid');
      expect(result1.isValid).toBe(false);

      const result2 = validatePhone('+966501234567');
      expect(result2.isValid).toBe(true);
    });

    it('should validate password', () => {
      const result1 = validatePassword('123');
      expect(result1.isValid).toBe(false);

      const result2 = validatePassword('password123');
      expect(result2.isValid).toBe(true);
    });

    it('should validate username', () => {
      const result1 = validateUsername('ab');
      expect(result1.isValid).toBe(false);

      const result2 = validateUsername('user123');
      expect(result2.isValid).toBe(true);
    });

    it('should validate plate number', () => {
      const result1 = validatePlateNumber('');
      expect(result1.isValid).toBe(false);

      const result2 = validatePlateNumber('ABC-1234');
      expect(result2.isValid).toBe(true);
    });

    it('should validate year', () => {
      const result1 = validateYear(1800);
      expect(result1.isValid).toBe(false);

      const result2 = validateYear(2023);
      expect(result2.isValid).toBe(true);
    });

    it('should validate currency', () => {
      const result1 = validateCurrency(-10);
      expect(result1.isValid).toBe(false);

      const result2 = validateCurrency(100.50);
      expect(result2.isValid).toBe(true);
    });
  });

  describe('sanitization functions', () => {
    it('should sanitize strings', () => {
      expect(sanitizeString('  hello   world  ')).toBe('hello world');
      expect(sanitizeString('\t\n  test  \n\t')).toBe('test');
    });

    it('should sanitize numbers', () => {
      expect(sanitizeNumber('123.45')).toBe(123.45);
      expect(sanitizeNumber('invalid')).toBe(null);
      expect(sanitizeNumber(456)).toBe(456);
    });

    it('should sanitize integers', () => {
      expect(sanitizeInteger('123')).toBe(123);
      expect(sanitizeInteger('123.45')).toBe(123);
      expect(sanitizeInteger('invalid')).toBe(null);
    });

    it('should sanitize form data', () => {
      const data = {
        name: '  John Doe  ',
        age: 25,
        description: '\t\n  Some text  \n\t',
      };

      const sanitized = sanitizeFormData(data);
      expect(sanitized.name).toBe('John Doe');
      expect(sanitized.age).toBe(25);
      expect(sanitized.description).toBe('Some text');
    });
  });

  describe('patterns', () => {
    it('should match email pattern', () => {
      expect(PATTERNS.email.test('test@example.com')).toBe(true);
      expect(PATTERNS.email.test('invalid-email')).toBe(false);
    });

    it('should match phone pattern', () => {
      expect(PATTERNS.phone.test('+966501234567')).toBe(true);
      expect(PATTERNS.phone.test('0501234567')).toBe(true);
      expect(PATTERNS.phone.test('invalid-phone')).toBe(false);
    });

    it('should match username pattern', () => {
      expect(PATTERNS.username.test('user123')).toBe(true);
      expect(PATTERNS.username.test('user_name')).toBe(true);
      expect(PATTERNS.username.test('user-name')).toBe(false);
      expect(PATTERNS.username.test('user name')).toBe(false);
    });

    it('should match numeric patterns', () => {
      expect(PATTERNS.numeric.test('12345')).toBe(true);
      expect(PATTERNS.numeric.test('123abc')).toBe(false);

      expect(PATTERNS.decimal.test('123.45')).toBe(true);
      expect(PATTERNS.decimal.test('123')).toBe(true);
      expect(PATTERNS.decimal.test('123.45.67')).toBe(false);
    });
  });
});