ごはんさーち

package.json

@@ -20,10 +20,12 @@
 		"autobind-decorator": "2.4.0",
 		"canvas": "2.8.0",
 		"chalk": "4.1.1",
+		"jsdom": "19.0.0",
 		"lokijs": "1.5.12",
 		"memory-streams": "0.1.3",
 		"misskey-reversi": "0.0.5",
 		"module-alias": "2.2.2",
+		"node-fetch": "2.6.7",
 		"promise-retry": "2.0.1",
 		"random-seed": "0.3.0",
 		"reconnecting-websocket": "4.4.0",
@@ -40,8 +42,10 @@
 	"devDependencies": {
 		"@koa/router": "9.4.0",
 		"@types/jest": "26.0.23",
+		"@types/jsdom": "16.2.14",
 		"@types/koa": "2.13.1",
 		"@types/koa__router": "8.0.4",
+		"@types/node-fetch": "3.0.3",
 		"@types/websocket": "1.0.2",
 		"jest": "26.6.3",
 		"koa": "2.13.1",

src/index.ts

@@ -35,6 +35,7 @@ import NotingModule from './modules/noting';
 import PollModule from './modules/poll';
 import ReminderModule from './modules/reminder';
 import DicModule from './modules/dic';
+import menuModule from './modules/menu';
 import GetColorModule from './modules/color';
 
 console.log('   __    ____  _____  ___ ');
@@ -91,6 +92,7 @@ promiseRetry(retry => {
 		new PollModule(),
 		new ReminderModule(),
 		new DicModule(),
+		new menuModule(),
 		new GetColorModule(),
 	]);
 }).catch(e => {

src/modules/menu/index.ts

@@ -0,0 +1,62 @@
+import autobind from 'autobind-decorator';
+import Module from '@/module';
+import Message from '@/message';
+import fetch from 'node-fetch';
+import { JSDOM } from 'jsdom';
+import { title } from 'process';
+
+export default class extends Module {
+    public readonly name = 'menu';
+
+    @autobind
+    public install() {
+        return {
+            mentionHook: this.mentionHook
+        };
+    }
+
+    @autobind
+    private async mentionHook(msg: Message) {
+        if (msg.text && msg.text.includes('ごはん')) {
+            // 1~2535111の適当な数字を取得
+            const random_number = Math.floor(Math.random() * 2535111) + 1;
+            const url = `https://cookpad.com/recipe/${random_number}`;
+            //testUrlして、200以外なら再取得
+            const res = await fetch(url);
+            if (res.status !== 200) {
+                return this.mentionHook(msg);
+            } else {
+                //jsdomを利用してレシピのタイトルを取得
+                const dom = new JSDOM(await res.text());
+                //@ts-ignore
+                let title = dom.window.document.querySelector('h1.recipe-title').textContent;
+                // titleから改行を除去
+                title = title!.replace(/\n/g, '');
+                msg.reply(`こんなのどう？> [${title}](${url})`, {
+                    immediate: true
+                });
+                return true;
+            }
+        } else {
+            return false;
+        }
+    }
+}
+
+function testUrl(url: string) {
+    return new Promise((resolve, reject) => {
+        const xhr = new XMLHttpRequest()
+        xhr.open('GET', url)
+        xhr.onload = () => {
+            if (xhr.status === 200) {
+                resolve(true)
+            } else {
+                reject(false)
+            }
+        }
+        xhr.onerror = () => {
+            reject(false)
+        }
+        xhr.send()
+    })
+}