119 lines
4.1 KiB
TypeScript
119 lines
4.1 KiB
TypeScript
import { promises as fs } from "fs";
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import { join, dirname } from "path";
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import { Episode, fetchAllEpisodes } from "./database";
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import path from "node:path";
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import fsSync from "node:fs";
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export async function updatePodcastRSS() {
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const episodes: Episode[] = await fetchAllEpisodes();
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const channelTitle =
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import.meta.env["PODCAST_TITLE"] ?? "自動生成ポッドキャスト";
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const channelLink =
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import.meta.env["PODCAST_LINK"] ?? "https://your-domain.com/podcast";
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const channelDescription =
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import.meta.env["PODCAST_DESCRIPTION"] ??
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"RSSフィードから自動生成された音声ポッドキャスト";
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const channelLanguage = import.meta.env["PODCAST_LANGUAGE"] ?? "ja";
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const channelAuthor = import.meta.env["PODCAST_AUTHOR"] ?? "管理者";
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const channelCategories =
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import.meta.env["PODCAST_CATEGORIES"] ?? "Technology";
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const channelTTL = import.meta.env["PODCAST_TTL"] ?? "60";
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const lastBuildDate = new Date().toUTCString();
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const baseUrl =
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import.meta.env["PODCAST_BASE_URL"] ?? "https://your-domain.com";
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let itemsXml = "";
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for (const ep of episodes) {
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const fileUrl = `${baseUrl}/podcast_audio/${path.basename(ep.audioPath)}`;
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const pubDate = new Date(ep.pubDate).toUTCString();
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const fileSize = fsSync.statSync(
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path.join(import.meta.dir, "..", "public/podcast_audio", ep.audioPath),
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).size;
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itemsXml += `
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<item>
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<title><![CDATA[${ep.title}]]></title>
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<description><![CDATA[${ep.title.replace(/\]\]>/g, "]]>").replace(/&/g, "&").replace(/\]\]>/g, "]]>")}]]></description>
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<author>${channelAuthor}</author>
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<category>${channelCategories}</category>
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<language>${channelLanguage}</language>
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<ttl>${channelTTL}</ttl>
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<enclosure url="${fileUrl}" length="${fileSize}" type="audio/wav" />
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<guid>${fileUrl}</guid>
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<pubDate>${pubDate}</pubDate>
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</item>
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`;
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}
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const outputPath = join(__dirname, "../public/podcast.xml");
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// 既存のRSSファイルの読み込み
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let existingXml = "";
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try {
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existingXml = await fs.readFile(outputPath, "utf-8");
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} catch (err) {
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// ファイルが存在しない場合は新規作成
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console.log("既存のpodcast.xmlが見つかりません。新規作成します。");
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}
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if (existingXml) {
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// 既存のitem部分を抽出
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const existingItemsMatch = existingXml.match(
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/<channel>([\s\S]*?)<\/channel>/,
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);
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if (existingItemsMatch) {
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const existingItems = existingItemsMatch[1];
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const newItemStartIndex = existingItems!.lastIndexOf("<item>");
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// 新しいitemを追加
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const updatedItems = existingItems + itemsXml;
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// lastBuildDateを更新
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const updatedXml = existingXml.replace(
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/<lastBuildDate>.*?<\/lastBuildDate>/,
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`<lastBuildDate>${lastBuildDate}</lastBuildDate>`,
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);
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// items部分を置き換え
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const finalXml = updatedXml.replace(
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/<channel>[\s\S]*?<\/channel>/,
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`<channel>${updatedItems}</channel>`,
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);
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// ファイルに書き込み
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await fs.writeFile(outputPath, finalXml.trim());
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} else {
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// 不正なフォーマットの場合は新規作成
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const rssXml = `<?xml version="1.0" encoding="UTF-8"?>
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<rss version="2.0">
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<channel>
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<title>${channelTitle}</title>
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<link>${channelLink}</link>
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<description><![CDATA[${channelDescription}]]></description>
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<lastBuildDate>${lastBuildDate}</lastBuildDate>
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${itemsXml}
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</channel>
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</rss>
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`;
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await fs.writeFile(outputPath, rssXml.trim());
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}
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} else {
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// 新規作成
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const rssXml = `<?xml version="1.0" encoding="UTF-8"?>
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<rss version="2.0">
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<channel>
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<title>${channelTitle}</title>
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<link>${channelLink}</link>
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<description><![CDATA[${channelDescription}]]></description>
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<lastBuildDate>${lastBuildDate}</lastBuildDate>
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${itemsXml}
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</channel>
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</rss>
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`;
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// Ensure directory exists
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await fs.mkdir(dirname(outputPath), { recursive: true });
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await fs.writeFile(outputPath, rssXml.trim());
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}
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}
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