export function countString(str: string) {
    str = str.replace(/\n/, '')
    const chinese = Array.from(str)
        .filter(ch => /[\u4e00-\u9fa5]/.test(ch))
        .length
    const english = Array.from(str)
        .map(ch => /[a-zA-Z0-9\s]/.test(ch) ? ch : '')
        .join('').length//.split(/\s+/).filter(s => s)

    return chinese + english
}

export function formatFileSize(bytes: number) {
    if (bytes <= 0) return '0KB';
    const units = ['KB', 'MB', 'GB', 'TB'];
    let i = 0;
    while (bytes >= 1024 && i < units.length - 1) {
        bytes /= 1024;
        i++;
    }
    return bytes.toFixed(2) + units[i];
}

const REGEX = {
    phone: /^(\d{3})\d{4}(\d{4})$/
}

export function hidePhone(phone?: string | null) {
    if (!phone || phone.length < 11) return phone;
    return phone.replace(REGEX.phone, '$1****$2')
}

export function isPhone(phone?: string) {
    return phone && REGEX.phone.test(phone)
}