fluxer/fluxer_app/src/utils/ThemeUtils.tsx
2026-01-01 21:05:54 +00:00

83 lines
2.5 KiB
TypeScript

/*
* Copyright (C) 2026 Fluxer Contributors
*
* This file is part of Fluxer.
*
* Fluxer is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Fluxer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
*/
import RuntimeConfigStore from '~/stores/RuntimeConfigStore';
import * as RegexUtils from '~/utils/RegexUtils';
const THEME_ID_REGEX = '[a-zA-Z0-9-]{2,32}';
const normalizeEndpoint = (endpoint: string | null | undefined): string | null => {
if (!endpoint) return null;
const trimmed = endpoint.replace(/\/$/, '');
return trimmed || null;
};
const buildThemePrefixes = (): Array<string> => {
const prefixes = new Set<string>();
const webApp = normalizeEndpoint(RuntimeConfigStore.webAppBaseUrl);
if (webApp) {
prefixes.add(`${webApp}/theme/`);
}
const marketingEndpoint = normalizeEndpoint(RuntimeConfigStore.marketingEndpoint);
if (marketingEndpoint) {
prefixes.add(`${marketingEndpoint}/theme/`);
}
return Array.from(prefixes);
};
const createThemeRegex = (): RegExp | null => {
const prefixes = buildThemePrefixes();
if (prefixes.length === 0) return null;
const escapedPrefix = prefixes.map((prefix) => RegexUtils.escapeRegex(prefix)).join('|');
return new RegExp(`(?:${escapedPrefix})(${THEME_ID_REGEX})(?![a-zA-Z0-9-])`, 'gi');
};
const matchThemes = (content: string | null, maxMatches = 1): Array<string> => {
const regex = createThemeRegex();
if (!regex || !content) return [];
const codes: Array<string> = [];
const seen = new Set<string>();
regex.lastIndex = 0;
let match: RegExpExecArray | null;
while ((match = regex.exec(content)) !== null && codes.length < maxMatches) {
const code = match[1];
if (code && !seen.has(code)) {
seen.add(code);
codes.push(code);
}
}
return codes;
};
export function findThemes(content: string | null): Array<string> {
return matchThemes(content, 10);
}
export function findTheme(content: string | null): string | null {
const matches = matchThemes(content, 1);
return matches[0] ?? null;
}