${escapeXml(title)}

/** * OPML export controller * @module controllers/opml */ import { getChannels } from "../storage/channels.js"; import { getFeedsForChannel } from "../storage/feeds.js"; import { getUserId } from "../utils/auth.js"; /** * Generate OPML export of all subscriptions * GET /opml * @param {object} request - Express request * @param {object} response - Express response * @returns {Promise} */ async function exportOpml(request, response) { const { application } = request.app.locals; const userId = getUserId(request); const channels = await getChannels(application, userId); // Build OPML structure const outlines = []; for (const channel of channels) { const feeds = await getFeedsForChannel(application, channel._id); if (feeds.length === 0) continue; const channelOutlines = feeds.map((feed) => ({ text: feed.title || extractDomain(feed.url), title: feed.title || "", type: "rss", xmlUrl: feed.url, htmlUrl: deriveSiteUrl(feed.url), })); outlines.push({ text: channel.name, title: channel.name, children: channelOutlines, }); } const siteUrl = application.publication?.me || "https://example.com"; const siteName = extractDomain(siteUrl); const opml = generateOpmlXml({ title: `${siteName} - Microsub Subscriptions`, dateCreated: new Date().toUTCString(), ownerName: userId, outlines, }); response.set("Content-Type", "text/x-opml"); response.set( "Content-Disposition", 'attachment; filename="subscriptions.opml"', ); response.send(opml); } /** * Generate OPML XML from data * @param {object} data - OPML data * @param {string} data.title - Document title * @param {string} data.dateCreated - Creation date * @param {string} data.ownerName - Owner name * @param {Array} data.outlines - Outline items * @returns {string} OPML XML string */ function generateOpmlXml({ title, dateCreated, ownerName, outlines }) { const renderOutline = (outline, indent = " ") => { if (outline.children) { const childrenXml = outline.children .map((child) => renderOutline(child, indent + " ")) .join("\n"); return `${indent}\n${childrenXml}\n${indent}`; } return `${indent}`; }; const outlinesXml = outlines.map((o) => renderOutline(o)).join("\n"); return ` ${escapeXml(title)} ${dateCreated} ${escapeXml(ownerName)} ${outlinesXml} `; } /** * Escape XML special characters * @param {string} str - String to escape * @returns {string} Escaped string */ function escapeXml(str) { if (!str) return ""; return String(str) .replace(/&/g, "&") .replace(//g, ">") .replace(/"/g, """) .replace(/'/g, "'"); } /** * Extract domain from URL * @param {string} url - URL to extract domain from * @returns {string} Domain */ function extractDomain(url) { try { return new URL(url).hostname; } catch { return url; } } /** * Derive site URL from feed URL * @param {string} feedUrl - Feed URL * @returns {string} Site URL */ function deriveSiteUrl(feedUrl) { try { const url = new URL(feedUrl); // Remove common feed paths const path = url.pathname .replace(/\/feed\/?$/, "") .replace(/\/rss\/?$/, "") .replace(/\/atom\.xml$/, "") .replace(/\/rss\.xml$/, "") .replace(/\/feed\.xml$/, "") .replace(/\/index\.xml$/, "") .replace(/\.rss$/, "") .replace(/\.atom$/, ""); return `${url.origin}${path || "/"}`; } catch { return feedUrl; } } export const opmlController = { exportOpml };