Alcove Feeds

import { allFeedsQuery } from "./evolu"; type Feed = typeof allFeedsQuery.Row; /** * Type for parsed OPML feed data */ export interface OPMLFeed { title: string; feedUrl: string; description?: string; category?: string; } /** * Generate OPML XML from feeds */ export function generateOPML(feeds: readonly Feed[]): string { const now = new Date().toUTCString(); const categories = new Map(); // Group feeds by category for (const feed of feeds) { const category = feed.category || "Uncategorized"; if (!categories.has(category)) { categories.set(category, []); } categories.get(category)?.push(feed); } let outlines = ""; // Generate outline elements for (const [category, categoryFeeds] of categories) { outlines += `\n `; for (const feed of categoryFeeds) { const description = feed.description || ""; outlines += `\n `; } outlines += "\n "; } const opml = ` Alcove Feeds ${now} ${outlines} `; return opml; } /** * Parse OPML XML and extract feeds */ export function parseOPML(opmlContent: string): OPMLFeed[] { const parser = new DOMParser(); const xmlDoc = parser.parseFromString(opmlContent, "text/xml"); // Check for parsing errors const parserError = xmlDoc.querySelector("parsererror"); if (parserError) { throw new Error("Invalid OPML file: XML parsing failed"); } const feeds: OPMLFeed[] = []; const outlines = xmlDoc.querySelectorAll("outline"); for (const outline of outlines) { const xmlUrl = outline.getAttribute("xmlUrl"); // If this outline has an xmlUrl, it's a feed if (xmlUrl) { const feed: OPMLFeed = { title: outline.getAttribute("title") || outline.getAttribute("text") || "Untitled Feed", feedUrl: xmlUrl, description: outline.getAttribute("description") || undefined, }; // Try to find category from parent outline const parent = outline.parentElement; if (parent?.tagName === "outline" && !parent.getAttribute("xmlUrl")) { feed.category = parent.getAttribute("title") || parent.getAttribute("text") || undefined; } feeds.push(feed); } } if (feeds.length === 0) { throw new Error("No feeds found in OPML file"); } return feeds; } /** * Escape special XML characters */ function escapeXml(text: string): string { return text .replace(/&/g, "&") .replace(//g, ">") .replace(/"/g, """) .replace(/'/g, "'"); } /** * Download OPML file to user's device */ export function downloadOPML( opmlContent: string, filename = "alcove-feeds.opml", ): void { const blob = new Blob([opmlContent], { type: "text/xml" }); const url = URL.createObjectURL(blob); const link = document.createElement("a"); link.href = url; link.download = filename; document.body.appendChild(link); link.click(); document.body.removeChild(link); URL.revokeObjectURL(url); }