feat(route): add AtCoder (#8825)

docs/en/programming.md

@@ -10,6 +10,50 @@ pageClass: routes
 
 <Route author="nczitzk" example="/acm/amturingaward" path="/acm/amturingaward"/>
 
+## AtCoder
+
+### Present Contests
+
+<RouteEn author="nczitzk" example="/atcoder/contest/en/upcoming" path="/atcoder/contest/:language?/:status?" :paramsDesc="['Language, `jp` as Japanese or `en` as English, English by default', 'Status, see below, Recent Contests by default']">
+
+Status
+
+| Active Contests | Upcoming Contests | Recent Contests |
+| --------------- | ----------------- | --------------- |
+| active          | upcoming          | recent          |
+
+</RouteEn>
+
+### Contests Archive
+
+<RouteEn author="nczitzk" example="/atcoder/contest" path="/atcoder/contest/:language?/:rated?/:category?/:keyword?" :paramsDesc="['Language, `jp` as Japanese or `en` as English, English by default', 'Rated Range, see below, all by default', 'Category, see below, all by default', 'Keyword']">
+
+Rated Range
+
+| ABC Class (Rated for ~1999) | ARC Class (Rated for ~2799) | AGC Class (Rated for ~9999) |
+| --------------------------- | --------------------------- | --------------------------- |
+| 1                           | 2                           | 3                           |
+
+Category
+
+| All | AtCoder Typical Contest | PAST Archive | Unofficial(unrated) |
+| --- | ----------------------- | ------------ | ------------------- |
+| 0   | 6                       | 50           | 101                 |
+
+| JOI Archive | Sponsored Tournament | Sponsored Parallel(rated) |
+| ----------- | -------------------- | ------------------------- |
+| 200         | 1000                 | 1001                      |
+
+| Sponsored Parallel(unrated) | Optimization Contest |
+| --------------------------- | -------------------- |
+| 1002                        | 1200                 |
+
+</RouteEn>
+
+### Posts
+
+<RouteEn author="nczitzk" example="/atcoder/post" path="/atcoder/post/:language?/:keyword?" :paramsDesc="['Language, `jp` as Japanese or `en` as English, English by default', 'Keyword']"/>
+
 ## cve.mitre.org
 
 ### Search Result

docs/programming.md

@@ -24,6 +24,50 @@ pageClass: routes
 
 > AlgoCasts 需要付费订阅，RSS 仅做更新提醒，不含付费内容.
 
+## AtCoder
+
+### Present Contests
+
+<Route author="nczitzk" example="/atcoder/contest/en/upcoming" path="/atcoder/contest/:language?/:status?" :paramsDesc="['语言，可选 `jp` 即日语 或 `en` 即英语，默认为英语', '状态，见下表，默认为 Recent Contests']">
+
+状态
+
+| Active Contests | Upcoming Contests | Recent Contests |
+| --------------- | ----------------- | --------------- |
+| active          | upcoming          | recent          |
+
+</Route>
+
+### Contests Archive
+
+<Route author="nczitzk" example="/atcoder/contest" path="/atcoder/contest/:language?/:rated?/:category?/:keyword?" :paramsDesc="['语言，可选 `jp` 即日语 或 `en` 即英语，默认为英语', 'Rated 对象，见下表，默认为全部', '分类，见下表，默认为全部', '关键字，默认为空']">
+
+Rated 对象
+
+| ABC Class (Rated for ~1999) | ARC Class (Rated for ~2799) | AGC Class (Rated for ~9999) |
+| --------------------------- | --------------------------- | --------------------------- |
+| 1                           | 2                           | 3                           |
+
+分类
+
+| All | AtCoder Typical Contest | PAST Archive | Unofficial(unrated) |
+| --- | ----------------------- | ------------ | ------------------- |
+| 0   | 6                       | 50           | 101                 |
+
+| JOI Archive | Sponsored Tournament | Sponsored Parallel(rated) |
+| ----------- | -------------------- | ------------------------- |
+| 200         | 1000                 | 1001                      |
+
+| Sponsored Parallel(unrated) | Optimization Contest |
+| --------------------------- | -------------------- |
+| 1002                        | 1200                 |
+
+</Route>
+
+### Posts
+
+<Route author="nczitzk" example="/atcoder/post" path="/atcoder/post/:language?/:keyword?" :paramsDesc="['语言，可选 `jp` 即日语 或 `en` 即英语，默认为英语', '关键字，默认为空']"/>
+
 ## cve.mitre.org
 
 ### 搜索结果

lib/v2/atcoder/contest.js

@@ -0,0 +1,64 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+const { parseDate } = require('@/utils/parse-date');
+
+module.exports = async (ctx) => {
+    const status = ['action', 'upcoming', 'recent'];
+
+    const language = ctx.params.language ?? 'en';
+
+    let rated = ctx.params.rated ?? '0';
+    const category = ctx.params.category ?? '0';
+    const keyword = ctx.params.keyword ?? '';
+
+    rated = rated === 'active' ? 'action' : rated;
+    const isStatus = status.includes(rated);
+
+    const rootUrl = 'https://atcoder.jp';
+    const currentUrl = `${rootUrl}/contests${isStatus ? `?lang=${language}` : `/archive?lang=${language}&ratedType=${rated}&category=${category}${keyword ? `&keyword=${keyword}` : ''}`}`;
+
+    const response = await got({
+        method: 'get',
+        url: currentUrl,
+    });
+
+    const $ = cheerio.load(response.data);
+
+    let items = $(isStatus ? `#contest-table-${rated}` : '.row')
+        .find('tr')
+        .slice(1, ctx.query.limit ? parseInt(ctx.query.limit) : 20)
+        .toArray()
+        .map((item) => {
+            item = $(item).find('td a').eq(1);
+
+            return {
+                title: item.text(),
+                link: `${rootUrl}${item.attr('href')}?lang=${language}`,
+            };
+        });
+
+    items = await Promise.all(
+        items.map((item) =>
+            ctx.cache.tryGet(item.link, async () => {
+                const detailResponse = await got({
+                    method: 'get',
+                    url: item.link,
+                });
+
+                const content = cheerio.load(detailResponse.data);
+
+                item.description = content(`.lang-${language}`).html();
+                item.pubDate = parseDate(content('.fixtime-full').first().text());
+
+                return item;
+            })
+        )
+    );
+
+    ctx.state.data = {
+        title: String(isStatus ? `${$(`#contest-table-${rated} h3`).text()} - AtCoder` : $('title').text()),
+        link: currentUrl,
+        item: items,
+        allowEmpty: true,
+    };
+};

lib/v2/atcoder/maintainer.js

@@ -0,0 +1,4 @@
+module.exports = {
+    '/post/:language?/:keyword?': ['nczitzk'],
+    '/contest/:language?/:rated?/:category?/:keyword?': ['nczitzk'],
+};

lib/v2/atcoder/post.js

@@ -0,0 +1,38 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+const timezone = require('@/utils/timezone');
+const { parseDate } = require('@/utils/parse-date');
+
+module.exports = async (ctx) => {
+    const language = ctx.params.language ?? 'en';
+    const keyword = ctx.params.keyword ?? '';
+
+    const rootUrl = 'https://atcoder.jp';
+    const currentUrl = `${rootUrl}/posts?lang=${language}${keyword ? `&keyword=${keyword}` : ''}`;
+
+    const response = await got({
+        method: 'get',
+        url: currentUrl,
+    });
+
+    const $ = cheerio.load(response.data);
+
+    const items = $('.panel')
+        .toArray()
+        .map((item) => {
+            item = $(item);
+
+            return {
+                title: item.find('.panel-title').text(),
+                description: item.find('.panel-body').html(),
+                link: `${rootUrl}${item.find('.panel-title a').attr('href')}`,
+                pubDate: timezone(parseDate(item.find('.timeago').attr('datetime')), +9),
+            };
+        });
+
+    ctx.state.data = {
+        title: `${keyword ? `[${keyword}] - ` : ''}${$('title').text()}`,
+        link: currentUrl,
+        item: items,
+    };
+};

lib/v2/atcoder/radar.js

@@ -0,0 +1,22 @@
+module.exports = {
+    'atcoder.jp': {
+        _name: 'AtCoder',
+        '.': [
+            {
+                title: 'Posts',
+                docs: 'https://docs.rsshub.app/programming.html#atcoder-posts',
+                source: ['/posts', '/'],
+                target: (params, url) => `/atcoder/post/${new URL(url).searchParams.get('lang') ?? 'en'}/${new URL(url).searchParams.get('keyword') ?? ''}`,
+            },
+            {
+                title: 'Contests',
+                docs: 'https://docs.rsshub.app/programming.html#atcoder-contests',
+                source: ['/contests/archive', '/contests', ''],
+                target: (params, url) =>
+                    `/atcoder/content/${new URL(url).searchParams.get('lang') ?? 'en'}/${new URL(url).searchParams.get('ratedType') ?? '0'}/${new URL(url).searchParams.get('category') ?? '0'}/${
+                        new URL(url).searchParams.get('keyword') ?? ''
+                    }`,
+            },
+        ],
+    },
+};

lib/v2/atcoder/router.js

@@ -0,0 +1,4 @@
+module.exports = function (router) {
+    router.get('/post/:language?/:keyword?', require('./post'));
+    router.get('/contest/:language?/:rated?/:category?/:keyword?', require('./contest'));
+};