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| 1 | +const https = require('https'); |
| 2 | +const fs = require('fs'); |
| 3 | +const path = require('path'); |
| 4 | +const { XMLParser } = require('fast-xml-parser'); |
| 5 | + |
| 6 | +const projectRoot = process.cwd(); |
| 7 | +const LATEST_NEWS_FOLDER_NAME = 'latest-news'; |
| 8 | +const NEWS_DATA = 'latest-news.json'; |
| 9 | + |
| 10 | +const latestNewsDirectory = path.join(projectRoot, LATEST_NEWS_FOLDER_NAME); |
| 11 | + |
| 12 | +if (!fs.existsSync(latestNewsDirectory)) { |
| 13 | + fs.mkdirSync(latestNewsDirectory); |
| 14 | +} |
| 15 | + |
| 16 | +getLatestNews(); |
| 17 | + |
| 18 | +async function getLatestNews() { |
| 19 | + const latestNewsXMl = await getLatestNewsXML(); |
| 20 | + |
| 21 | + const parser = new XMLParser({ |
| 22 | + ignoreDeclaration: true |
| 23 | + }); |
| 24 | + const allJson = parser.parse(latestNewsXMl); |
| 25 | + const items = allJson['rss']['channel']['item']; |
| 26 | + const latestNews = []; |
| 27 | + |
| 28 | + for (const item of items.splice(0, 4)) { |
| 29 | + const imagePath = await saveImage(item.featuredImage); |
| 30 | + latestNews.push({ |
| 31 | + title: item.title, |
| 32 | + date: item.pubDate, |
| 33 | + link: item.link, |
| 34 | + image: imagePath, |
| 35 | + description: item.description |
| 36 | + }) |
| 37 | + } |
| 38 | + |
| 39 | + fs.writeFileSync(path.join(latestNewsDirectory, NEWS_DATA), JSON.stringify(latestNews), 'utf8'); |
| 40 | +} |
| 41 | + |
| 42 | +async function getLatestNewsXML() { |
| 43 | + return await doRequest({ |
| 44 | + hostname: 'blog.jetbrains.com', |
| 45 | + port: 443, |
| 46 | + path: '/kotlin/feed/', |
| 47 | + method: 'GET' |
| 48 | + }); |
| 49 | +} |
| 50 | + |
| 51 | +async function saveImage(imageUrl) { |
| 52 | + const url = new URL(imageUrl); |
| 53 | + |
| 54 | + const localFileName = imageUrl.split('/').pop(); |
| 55 | + const localFilePath = path.join(latestNewsDirectory, localFileName); |
| 56 | + const relativePath = path.relative(projectRoot, localFilePath); |
| 57 | + |
| 58 | + const fileStream = fs.createWriteStream(localFilePath); |
| 59 | + |
| 60 | + return new Promise((resolve, reject) => { |
| 61 | + const request = https.get(url, (response) => { |
| 62 | + if (response.statusCode !== 200) { |
| 63 | + reject(new Error(`Failed to download image. HTTP status code: ${response.statusCode}`)); |
| 64 | + return; |
| 65 | + } |
| 66 | + |
| 67 | + response.pipe(fileStream); |
| 68 | + |
| 69 | + fileStream.on('finish', () => { |
| 70 | + fileStream.close(); |
| 71 | + resolve(relativePath); |
| 72 | + }); |
| 73 | + |
| 74 | + fileStream.on('error', (err) => { |
| 75 | + reject(err); |
| 76 | + }); |
| 77 | + }); |
| 78 | + |
| 79 | + request.on('error', reject); |
| 80 | + |
| 81 | + request.end(); |
| 82 | + }); |
| 83 | +} |
| 84 | + |
| 85 | + |
| 86 | +function doRequest(options) { |
| 87 | + return new Promise((resolve, reject) => { |
| 88 | + const req = https.request(options, (res) => { |
| 89 | + res.setEncoding('utf8'); |
| 90 | + let responseBody = ''; |
| 91 | + |
| 92 | + res.on('data', (chunk) => { |
| 93 | + responseBody += chunk; |
| 94 | + }); |
| 95 | + |
| 96 | + res.on('end', () => { |
| 97 | + resolve(responseBody); |
| 98 | + }); |
| 99 | + }); |
| 100 | + |
| 101 | + req.on('error', (err) => { |
| 102 | + reject(err); |
| 103 | + }); |
| 104 | + |
| 105 | + req.end(); |
| 106 | + }); |
| 107 | +} |
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