80 lines
1.8 KiB
TypeScript
80 lines
1.8 KiB
TypeScript
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import * as tmp from 'tmp';
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import * as fs from 'fs';
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import * as util from 'util';
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import chalk from 'chalk';
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import * as request from 'request';
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import Logger from '../services/logger';
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import config from '../config';
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const logger = new Logger('download-text-file');
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export async function downloadTextFile(url: string): Promise<string> {
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// Create temp file
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const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
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tmp.file((e, path, fd, cleanup) => {
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if (e) return rej(e);
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res([path, cleanup]);
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});
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});
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logger.info(`Temp file is ${path}`);
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// write content at URL to temp file
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await new Promise((res, rej) => {
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logger.info(`Downloading ${chalk.cyan(url)} ...`);
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const writable = fs.createWriteStream(path);
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writable.on('finish', () => {
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logger.succ(`Download finished: ${chalk.cyan(url)}`);
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res();
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});
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writable.on('error', error => {
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logger.error(`Download failed: ${chalk.cyan(url)}: ${error}`, {
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url: url,
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e: error
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});
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rej(error);
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});
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const requestUrl = new URL(url).pathname.match(/[^\u0021-\u00ff]/) ? encodeURI(url) : url;
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const req = request({
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url: requestUrl,
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proxy: config.proxy,
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timeout: 10 * 1000,
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headers: {
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'User-Agent': config.userAgent
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}
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});
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req.pipe(writable);
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req.on('response', response => {
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if (response.statusCode !== 200) {
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logger.error(`Got ${response.statusCode} (${url})`);
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writable.close();
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rej(response.statusCode);
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}
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});
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req.on('error', error => {
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logger.error(`Failed to start download: ${chalk.cyan(url)}: ${error}`, {
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url: url,
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e: error
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});
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writable.close();
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rej(error);
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});
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});
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logger.succ(`Downloaded to: ${path}`);
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const text = await util.promisify(fs.readFile)(path, 'utf8');
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cleanup();
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return text;
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}
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