| |
|
|
| function isValidEmail(email) { |
| if (typeof email !== 'string') return false; |
| const re = /^[^\s@]+@[^\s@]+\.[a-z]{2,}$/i; |
| return re.test(email.trim()); |
| } |
|
|
| |
| function passwordStrength(pw) { |
| if (typeof pw !== 'string' || pw.length === 0) return 0; |
| let score = 0; |
| if (pw.length >= 8) score++; |
| if (/[a-z]/.test(pw) && /[A-Z]/.test(pw)) score++; |
| if (/\d/.test(pw)) score++; |
| if (/[^A-Za-z0-9]/.test(pw)) score++; |
| if (pw.length < 6) score = Math.min(score, 1); |
| return score; |
| } |
|
|
| |
| |
| |
| |
| |
| |
| function isValidTCKN(value) { |
| const s = String(value); |
| if (!/^\d{11}$/.test(s) || s[0] === '0') return false; |
| const d = s.split('').map(Number); |
| const odd = d[0] + d[2] + d[4] + d[6] + d[8]; |
| const even = d[1] + d[3] + d[5] + d[7]; |
| const d10 = (((odd * 7 - even) % 10) + 10) % 10; |
| if (d10 !== d[9]) return false; |
| const sum10 = d.slice(0, 10).reduce((a, b) => a + b, 0); |
| return sum10 % 10 === d[10]; |
| } |
|
|
| |
| function normalizePhone(input) { |
| const digits = String(input).replace(/\D/g, ''); |
| let local; |
| if (digits.length === 12 && digits.startsWith('90')) local = digits.slice(2); |
| else if (digits.length === 11 && digits.startsWith('0')) local = digits.slice(1); |
| else if (digits.length === 10) local = digits; |
| else return null; |
| if (local[0] !== '5') return null; |
| return `+90 ${local.slice(0, 3)} ${local.slice(3, 6)} ${local.slice(6, 8)} ${local.slice(8)}`; |
| } |
|
|
| module.exports = { isValidEmail, passwordStrength, isValidTCKN, normalizePhone }; |
|
|
