91 lines
2.8 KiB
JavaScript
91 lines
2.8 KiB
JavaScript
const MIN_LEN = 3;
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const MAX_LEN = 32;
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const ALLOWED_CHARS_RE = /^[\p{Script=Latin}\p{Script=Cyrillic}0-9 _-]+$/u;
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export function normalizeChannelDisplayName(value) {
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if (value == null) return '';
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return String(value).trim().replace(/\s+/g, ' ');
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}
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export function normalizeChannelDescription(value) {
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if (value == null) return '';
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return String(value).trim().replace(/\s+/g, ' ');
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}
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export function toCanonicalChannelSlug(value) {
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const normalized = normalizeChannelDisplayName(value);
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if (!normalized) return '';
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const lowered = normalized.toLowerCase().replace(/\u0451/g, '\u0435');
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let out = '';
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let pendingSeparator = false;
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for (const ch of lowered) {
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if (ch === ' ' || ch === '_' || ch === '-') {
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pendingSeparator = out.length > 0;
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continue;
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}
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if (!/[\p{Script=Latin}\p{Script=Cyrillic}0-9]/u.test(ch)) {
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return '';
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}
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if (pendingSeparator && out.length > 0) out += '-';
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out += ch;
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pendingSeparator = false;
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}
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return out.replace(/-+$/g, '');
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}
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export function validateChannelDisplayName(value) {
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const normalized = normalizeChannelDisplayName(value);
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if (!normalized) {
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return { ok: false, code: 'blank', normalized: '', slug: '' };
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}
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const length = Array.from(normalized).length;
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if (length < MIN_LEN) {
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return { ok: false, code: 'too_short', normalized, slug: '' };
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}
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if (length > MAX_LEN) {
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return { ok: false, code: 'too_long', normalized, slug: '' };
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}
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if (!ALLOWED_CHARS_RE.test(normalized)) {
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return { ok: false, code: 'bad_chars', normalized, slug: '' };
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}
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if (normalized === '0') {
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return { ok: false, code: 'reserved', normalized, slug: '' };
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}
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const slug = toCanonicalChannelSlug(normalized);
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if (!slug) {
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return { ok: false, code: 'bad_chars', normalized, slug: '' };
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}
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return { ok: true, code: '', normalized, slug };
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}
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export function channelNameErrorText(code) {
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switch (String(code || '').trim()) {
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case 'blank':
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return 'Введите название канала.';
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case 'too_short':
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return 'Название слишком короткое: минимум 3 символа.';
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case 'too_long':
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return 'Название слишком длинное: максимум 32 символа.';
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case 'bad_chars':
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return 'Разрешены кириллица, латиница, цифры, пробел, _ и -.';
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case 'reserved':
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return 'Название "0" зарезервировано.';
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default:
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return 'Некорректное название канала.';
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}
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}
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export function channelDescriptionErrorText(value) {
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const normalized = normalizeChannelDescription(value);
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if (new TextEncoder().encode(normalized).length > 200) {
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return 'Описание слишком длинное: максимум 200 байт UTF-8.';
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}
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return '';
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}
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