From f7e2cb387dd4a15d36b6e5ad03059f6ec113711e Mon Sep 17 00:00:00 2001
From: eternasuno <22316214+eternasuno@users.noreply.github.com>
Date: Sat, 4 May 2024 11:22:55 +0900
Subject: [PATCH] feat(route): 69shu (#15453)

* feat(route): 69shu

* Update lib/routes/69shu/article.ts

Co-authored-by: Tony <TonyRL@users.noreply.github.com>

---------
---
 lib/routes/69shu/article.ts   | 96 +++++++++++++++++++++++++++++++++++
 lib/routes/69shu/namespace.ts |  6 +++
 2 files changed, 102 insertions(+)
 create mode 100644 lib/routes/69shu/article.ts
 create mode 100644 lib/routes/69shu/namespace.ts

diff --git a/lib/routes/69shu/article.ts b/lib/routes/69shu/article.ts
new file mode 100644
index 000000000..1a4b721b9
--- /dev/null
+++ b/lib/routes/69shu/article.ts
@@ -0,0 +1,96 @@
+import { load } from 'cheerio';
+import cache from '@/utils/cache';
+import ofetch from '@/utils/ofetch';
+import type { Route, DataItem } from '@/types';
+
+export const route: Route = {
+    path: '/article/:id',
+    name: '章节',
+    url: 'www.69shu.top',
+    maintainers: ['eternasuno'],
+    example: '/article/47117',
+    parameters: { id: '小说 id, 可在对应小说页 URL 中找到' },
+    categories: ['reading'],
+    features: {
+        requireConfig: false,
+        requirePuppeteer: false,
+        antiCrawler: false,
+        supportBT: false,
+        supportPodcast: false,
+        supportScihub: false,
+    },
+    radar: [
+        {
+            source: ['www.69shu.top/book/:id.htm'],
+            target: '/article/:id',
+        },
+    ],
+    handler: async (ctx) => {
+        const { id } = ctx.req.param();
+        const link = `https://www.69shu.top/book/${id}.htm`;
+        const $ = load(await get(link));
+
+        const item = await Promise.all(
+            $('.qustime li>a')
+                .map((_, chapter) => createItem(chapter.attribs.href))
+                .toArray()
+        );
+
+        return {
+            title: $('h1>a').text(),
+            description: $('.navtxt>p:first-of-type').text(),
+            link,
+            item,
+            image: $('.bookimg2>img').attr('src'),
+            author: $('.booknav2>p:first-of-type>a').text(),
+            language: 'zh-cn',
+        };
+    },
+};
+
+const createItem = (url: string) =>
+    cache.tryGet(url, async () => {
+        const $ = load(await get(url));
+        const { articleid, chapterid, chaptername } = parseObject(/bookinfo\s?=\s?{[\S\s]+?}/, $('head>script:not([src])').text());
+        const decryptionMap = parseObject(/_\d+\s?=\s?{[\S\s]+?}/, $('.txtnav+script').text());
+
+        return {
+            title: chaptername,
+            description: decrypt($('.txtnav').html() || '', articleid, chapterid, decryptionMap),
+            link: url,
+        };
+    }) as Promise<DataItem>;
+
+const get = async (url: string, encoding = 'gbk') => new TextDecoder(encoding).decode(await ofetch(url, { responseType: 'arrayBuffer' }));
+
+const parseObject = (reg: RegExp, str: string): Record<string, string> => {
+    const obj = {};
+    const match = reg.exec(str);
+    if (match) {
+        for (const line of match[0].matchAll(/(\w+):\s?["']?([\S\s]+?)["']?[\n,}]/g)) {
+            obj[line[1]] = line[2];
+        }
+    }
+
+    return obj;
+};
+
+const decrypt = (txt: string, articleid: string, chapterid: string, decryptionMap: Record<string, string>) => {
+    if (!txt || txt.length < 10) {
+        return txt;
+    }
+
+    const lineMap = {};
+    const articleKey = Number(articleid) + 3_061_711;
+    const chapterKey = Number(chapterid) + 3_421_001;
+    for (const key of Object.keys(decryptionMap)) {
+        lineMap[(Number(key) ^ chapterKey) - articleKey] = (Number(decryptionMap[key]) ^ chapterKey) - articleKey;
+    }
+
+    return txt
+        .split('<br><br>')
+        .map((line, index, array) => (lineMap[index] ? array[lineMap[index]] : line))
+        .slice(1, -1)
+        .join('<br>')
+        .replaceAll(/\u2003|(<div[\S\s]*?<\/div>)/g, '');
+};
diff --git a/lib/routes/69shu/namespace.ts b/lib/routes/69shu/namespace.ts
new file mode 100644
index 000000000..1037cff1d
--- /dev/null
+++ b/lib/routes/69shu/namespace.ts
@@ -0,0 +1,6 @@
+import type { Namespace } from '@/types';
+
+export const namespace: Namespace = {
+    name: '69书吧',
+    url: '69shu.top',
+};