v1

Author: mmqnym

.gitignore

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+.env
+node_modules
+package-lock.json

Dockerfile

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+FROM node:20.11.0-alpine
+
+WORKDIR /app
+
+COPY . .
+RUN npm i
+
+CMD ["npm", "start"]

LICENSE.md

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+MIT License
+
+Copyright (c) 2024 mmq88x <[email protected]>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# DEXPrice-DCMonitor
+
+> 這是一個使用 [DexScreener](https://docs.dexscreener.com/) API 監控價格的 Discord 機器人。
+> This is a Discord bot that monitors prices using the [DexScreener](https://docs.dexscreener.com/) API.
+
+## 設置 Setup
+
+將 `example.env` 更改為 `.env` 並修改裡面的內容
+Rename example.env to .env and modify its contents as follows:
+
+中文
+
+```py
+DISCORD_TOKEN="Your Token" # 填入你的 Discord bot token
+TARGET_CHANNEL_IDS="Your Channel ID" # 以',', ex: 123456789,987654321
+CHAIN="ethereum" # 詳細的名稱清單請參考 https://docs.dexscreener.com/api/reference
+PAIR_HASH="0x646946F0518c6Ba27f1B2C6b4387EC6035bC42e3" # 範例交易對，使用的是 "丹 - PFPAsia" 的非官方交易對
+UPDATE_FREQUENCY = 5000 # in milliseconds
+
+# TASKs
+UPDATE_STATUS="on" # 讓機器人將價格反應在狀態上，"on" 開啟 or "off" 關閉
+BOARDCAST="off" # 讓機器人發送價格訊息到 "TARGET_CHANNEL_IDS" 指定的頻道，"on" 開啟 or "off" 關閉
+```
+
+English
+
+```py
+DISCORD_TOKEN="Your Token" # Fill in your Discord bot token
+TARGET_CHANNEL_IDS="Your Channel ID" # Separated by ',', e.g., 123456789,987654321
+CHAIN="ethereum" # For a detailed list of names, please refer to https://docs.dexscreener.com/api/reference
+PAIR_HASH="0x646946F0518c6Ba27f1B2C6b4387EC6035bC42e3" # Example pair hash for the unofficial "Dan - PFPAsia" pair
+UPDATE_FREQUENCY = 5000 # in milliseconds
+
+# TASKs
+UPDATE_STATUS="on" # Enable or disable the bot's ability to reflect prices in status. Use "on" or "off".
+BOARDCAST="off" # Enable or disable the bot's ability to send price messages to the channels specified in "TARGET_CHANNEL_IDS". Use "on" or "off".
+```
+
+## 執行 Run
+
+之後使用 docker compose 一鍵啟動即可
+Afterwards, use Docker Compose to start the bot with a single command:
+
+```sh
+docker compose up -d --build
+```
+
+或使用 node 執行原始碼
+Alternatively, you can run the source code using Node:
+
+```sh
+npm run start
+```

app.js

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+const { Client, GatewayIntentBits, ActivityType } = require('discord.js');
+const { fetchPrice } = require('./utils');
+
+const client = new Client({ intents: [GatewayIntentBits.Guilds] });
+const dotenv = require('dotenv');
+
+dotenv.config()
+
+TASK_QUEUE = []
+
+const registTask = async () => {
+  if (process.env.UPDATE_STATUS == 'on') {
+    TASK_QUEUE.push(updateStatus);
+  }
+
+  if (process.env.BOARDCAST == 'on') {
+    TASK_QUEUE.push(boardcast);
+  }
+}
+
+const doTask = async () => {
+  await TASK_QUEUE.forEach(async (task) => {
+    await task();
+  });
+}
+
+const updateStatus = async () => {
+  const price = await fetchPrice()
+  client.user.setActivity(`$${price}`, { type: ActivityType.Watching })
+}
+
+const boardcast = async () => {
+  const price = await fetchPrice()
+
+  // send message to all channels from specific channel ids
+  const channelIds = process.env.TARGET_CHANNEL_IDS.split(',');
+
+  for (const channelId of channelIds) {
+    const channel = await client.channels.fetch(channelId);
+    await channel.send(`丹 DAN Price: $${price}`);
+  }
+}
+
+client.on('ready', () => {
+  client.user.setActivity('丹 DAN Price', { type: ActivityType.Watching })
+  console.log(`Logged in as ${client.user.tag}!`);
+  registTask();
+  
+  setInterval(async () => {
+    doTask();
+  }, process.env.UPDATE_FREQUENCY);
+});
+
+client.login(process.env.DISCORD_TOKEN);

docker-compose.yml

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+version: '3.7'
+services:
+  dexprice-dcmonitor:
+    build: .
+    image: dexprice-dcmonitor
+    restart: unless-stopped

example.env

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+# This is an example, using the unofficial uniswap pool of DAN.
+
+DISCORD_TOKEN="Your Token"
+TARGET_CHANNEL_IDS="Your Channel ID" # Seperated by ',', ex: 123456789,987654321
+CHAIN="ethereum" # Detail: https://docs.dexscreener.com/api/reference
+PAIR_HASH="0x646946F0518c6Ba27f1B2C6b4387EC6035bC42e3"
+UPDATE_FREQUENCY = 5000 # in milliseconds
+
+# TASKs
+UPDATE_STATUS="on" # on or off
+BOARDCAST="off" # on or off

package.json

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+{
+  "name": "pricemonitor",
+  "version": "1.0.0",
+  "description": "DEXScreener monitor with Discord bot.",
+  "main": "app.js",
+  "scripts": {
+    "start": "node app.js"
+  },
+  "author": "mmq88x <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "discord.js": "^14.14.1",
+    "dotenv": "^16.4.2"
+  }
+}

utils.js

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+const fetchPrice = async () => {
+    priceUsd = -1;
+
+    try {
+        const response = await fetch(
+        `https://api.dexscreener.com/latest/dex/pairs/${process.env.CHAIN}/${process.env.PAIR_HASH}`
+        );
+        const data = await response.json();
+        priceUsd = data.pair.priceUsd;
+
+    } catch (error) {
+        console.log(error);
+    }
+
+    return priceUsd;
+}
+
+module.exports = { fetchPrice };