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sudacode
8c22567da9
- Add extension-icons module (buildIconIndex, isSafeIconUrl, repoFaviconUrl, iconMonogram) with tests - Render each row's icon with a monogram fallback while loading or missing - Installed extensions borrow their icon from the catalogue; repo rows use the index host's favicon - Restrict icon loads to https URLs - Thread iconUrl through AvailableExtension and the runtime, document the feature
62 lines
2.0 KiB
TypeScript
62 lines
2.0 KiB
TypeScript
/**
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* Icons for the extension rows.
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*
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* An Aniyomi repository publishes each extension's icon — the streaming site's
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* own favicon — next to its APK, so the repository index is the only place an
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* icon can come from. Installed extensions are listed from disk and carry no
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* icon of their own; they borrow the one their package has in the catalogue,
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* which means an extension whose repository was removed, or one dropped in by
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* hand, falls back to a monogram.
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*/
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interface IconSource {
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pkg: string;
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iconUrl: string;
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}
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/** Package name to icon URL, for looking up an installed extension's icon. */
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export function buildIconIndex(extensions: IconSource[]): Map<string, string> {
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const index = new Map<string, string>();
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for (const extension of extensions) {
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if (typeof extension.iconUrl === 'string' && extension.iconUrl.length > 0) {
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index.set(extension.pkg, extension.iconUrl);
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}
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}
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return index;
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}
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/** Only https icons are loaded; a repo index is content the user pointed us at. */
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export function isSafeIconUrl(url: string | null | undefined): url is string {
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return typeof url === 'string' && /^https:\/\/\S+$/.test(url);
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}
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/**
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* The favicon of the host serving a repository index.
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*
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* A repository publishes no icon for itself, so the host's own favicon stands
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* in. Nothing depends on it: a host that serves none simply leaves the row on
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* its monogram.
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*/
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export function repoFaviconUrl(indexUrl: string): string | null {
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try {
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const url = new URL(indexUrl.trim());
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if (url.protocol !== 'https:') return null;
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return `https://${url.host}/favicon.ico`;
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} catch {
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return null;
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}
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}
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/**
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* The letter shown while an icon loads, or in place of one that never does.
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*
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* Leading punctuation and whitespace are skipped, and a name that carries no
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* letter or digit at all still gets a placeholder rather than an empty box.
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*/
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export function iconMonogram(name: string): string {
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for (const char of name.trim()) {
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if (/[\p{L}\p{N}]/u.test(char)) return char.toUpperCase();
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}
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return '?';
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}
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