feat(route): add kakuyomu

docs/reading.md

@@ -10,6 +10,15 @@ pageClass: routes
 
 <Route author="HenryQW" example="/allpoetry/newest" path="/allpoetry/:order?" :paramsDesc="['排序方式, `best` 或 `newest`, 缺省 `best`']"/>
 
+## kakuyomu
+
+### 章节
+
+<Route author="huangliangshusheng" example="/kakuyomu/episode/1177354054883783581" path="/kakuyomu/episode/:id" :paramsDesc="['小说 id, 可在对应小说页 URL 中找到']">
+
+举例网址：<https://kakuyomu.jp/works/1177354054883783581>
+
+</Route>
 ## Kindle Unlimited
 
 ### 会员限时免费读书单

lib/v2/kakuyomu/episode.js

@@ -0,0 +1,51 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+
+module.exports = async (ctx) => {
+    const id = ctx.params.id;
+    const work_url = `https://kakuyomu.jp/works/${id}`;
+    const $ = cheerio.load(await get(work_url));
+
+    const work_title = $('#workTitle').text();
+    const introduction = $('#introduction').text();
+
+    const episode_list = $('a.widget-toc-episode-episodeTitle')
+        .slice(-5)
+        .map((_, episode) => {
+            const $_episode = $(episode);
+            return {
+                title: $_episode.find('span').text(),
+                link: $_episode.attr('href'),
+            };
+        })
+        .toArray()
+        .reverse();
+
+    const item_list = await Promise.all(
+        episode_list.map((episode) =>
+            ctx.cache.tryGet(episode.link, async () => {
+                episode.link = `https://kakuyomu.jp${episode.link}`;
+                const content = cheerio.load(await get(episode.link));
+                episode.description = content('.widget-episodeBody').html();
+                return episode;
+            })
+        )
+    );
+
+    ctx.state.data = {
+        title: work_title,
+        link: work_url,
+        description: introduction,
+        language: 'ja',
+        item: item_list,
+    };
+};
+
+const get = async (url) => {
+    const response = await got({
+        method: 'get',
+        url,
+    });
+
+    return response.data;
+};

lib/v2/kakuyomu/maintainer.js

@@ -0,0 +1,3 @@
+module.exports = {
+    '/episode/:id': ['huangliangshusheng'],
+};

lib/v2/kakuyomu/radar.js

@@ -0,0 +1,13 @@
+module.exports = {
+    'kakuyomu.jp': {
+        _name: 'kakuyomu',
+        '.': [
+            {
+                title: '章节',
+                docs: 'https://docs.rsshub.app/reading.html#kakuyomu-zhang-jie',
+                source: ['/works/:id'],
+                target: '/kakuyomu/episode/:id',
+            },
+        ],
+    },
+};

lib/v2/kakuyomu/router.js

@@ -0,0 +1 @@
+module.exports = (router) => router.get('/episode/:id', require('./episode.js'));