105 lines
2.8 KiB
TypeScript
105 lines
2.8 KiB
TypeScript
import {promises as fsp} from 'fs';
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import {join} from 'path';
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import cheerio from 'cheerio';
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import got, {Response} from 'got';
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export interface OfficialTopic {
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date: Date;
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id: string;
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title: string;
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url: string;
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}
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async function entry(): Promise<void> {
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const timeout = 250;
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const officialTopics: OfficialTopic[] = [];
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const baseURL = 'https://tildes.net/~tildes.official?order=new&per_page=100';
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let hasNextButton = true;
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while (hasNextButton) {
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// Set the URL to be downloaded, on the first iteration we won't have an ID for
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// `&after=` yet so we make sure to check for that.
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let getURL: string = baseURL;
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if (officialTopics.length > 0) {
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getURL += `&after=${officialTopics[officialTopics.length - 1].id}`;
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}
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// Download the page and load the HTML into Cheerio.
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const response: Response<string> = await got(getURL, {
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headers: {
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'User-Agent': 'Tildes Issue Log scraping Official Topics'
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}
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});
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const html: CheerioStatic = cheerio.load(response.body);
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// Grab all topics from the listing.
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const topics: CheerioElement[] = html(
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'.topic-listing > li > article'
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).toArray();
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for (const topic of topics) {
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const $topic: CheerioStatic = cheerio.load(topic);
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// Topic IDs in the listing will start with `topic-` so remove that first.
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const id: string = topic.attribs.id.slice(6);
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officialTopics.push({
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date: new Date($topic('time').attr('datetime')!),
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id,
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title: $topic('.topic-title > a').text(),
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url: `https://tild.es/${id}`
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});
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}
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const paginationButtons: CheerioElement[] = html('.pagination')
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.find('.page-item.btn')
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.toArray();
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// If all pagination buttons are "previous" buttons, stop the loop.
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if (
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paginationButtons.every(val =>
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val.firstChild.data?.toLowerCase().includes('prev')
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)
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) {
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hasNextButton = false;
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}
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await wait(timeout);
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}
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await fsp.mkdir(join(__dirname, '../pages/data/'), {recursive: true});
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await fsp.writeFile(
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join(__dirname, '../pages/data/official-topics.json'),
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JSON.stringify(officialTopics, null, 2)
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);
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}
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export async function wait(timeout: number): Promise<void> {
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return new Promise(resolve => setTimeout(resolve, timeout));
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}
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export async function getTopicsFromMonth(
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data: OfficialTopic[],
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year: number,
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month: number
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): Promise<OfficialTopic[]> {
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const topics: OfficialTopic[] = [];
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for (const topic of data) {
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topic.date = new Date(topic.date);
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if (
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topic.date.getFullYear() === year &&
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topic.date.getMonth() + 1 === month
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) {
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topics.push(topic);
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}
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}
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topics.sort((a, b) => a.date.getDate() - b.date.getDate());
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return topics;
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}
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if (require.main === module) {
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entry();
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}
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