# Connect MetaMask Wallet with Flask and Discord.py ## Introduction Today we will build a `Discord.py` and use `Flask` to allow to integrate the Ethereum wallet addresses with the wallet, you use the `Flask` frontend to connect the wallet while it's logged in the `Flask` system and when you want to check if synced, the `Discord.py` bot sends a `JSON POST` request to read. **SO LET'S GOOOOO 🔥🔥🔥** ## Setup the Flask Page Start by creating a new directory, and in that directory, create a folder for the Flask page: ```bash mkdir metamask-flask-discord cd metamask-flask-discord mkdir flask cd flask ``` Now, create an `app.py` file and a `log.txt` and paste this into the `app.py`: ```py from flask import Flask, render_template, Response, request app = Flask(__name__) @app.route('/') def index(discord_id): return render_template('index.html', discordId = discord_id) @app.route('/sync', methods=['POST']) def sync(): discord_id = request.json['discordId'] wallet_address = request.json['walletAddress'] with open('log.txt', 'r+') as f: file = f.read() if discord_id in file: if wallet_address in file: Pass else: f.write(' ' + wallet_address) else: f.write('\n' + discord_id + ' ' + wallet_address) f.close() @app.route('/read', methods=['POST']) def read(): discord_id = request.json['discordId'] with open('log.txt', 'r') as f: file = f.read() if discord_id in file: wallet_addresses = file.split(discord_id)[1].split(' ') wallet_addresses.pop(0) return Response(str(wallet_addresses), mimetype='application/json') else: return Response('No wallet address found', mimetype='application/json') ``` This is our main `flask` file, what we are doing here, we are setting `3` routes: - `/` (main) - `sync` (to sync with the logs which also syncs with the bot) - `read` (provides wallet addresses for a specific user) And for `sync` and `read` we will receive a `JSON POST` request, `POST` is more safer, that's why I personally prefer it. Also, in both `sync` and `read` we open up the `log.txt` either to read wallet addresses for a specific user, or write new wallet addresses for a new user. Now, let's create the landing page where you can connect your `MetaMask` wallet: ```bash mkdir templates touch index.html ``` Now in your `index.html`, paste this: ```html MetaMask Connection

Connect Your MetaMask Wallet Here To Connect With Discord!

``` So here we make few buttons, and make a few event listeners which run certain functions, and for example, when the wallet is connected, we replace the event listener to listen to the sign out function, why would the user sign in again if he is already signed in, hahah! And for syncing here, we send a `JSON POST` request with `walletAddress` and `discordId` to `/sync` to save it! ## Working on our Discord.py bot Start by creating a directory and creating a `.env` & `bot.py`: ```bash mkdir discordbot cd discordbot touch .env touch bot.py ``` Now, open up your `.env` file where you save your token just like this: ```env TOKEN= ``` Let's work on the actual bot now: ```py import discord from discord.ext import commands import requests import os from dotenv import load_dotenv load_dotenv() token = os.getenv('TOKEN') intents = discord.Intents.all() bot = commands.Bot(command_prefix='$', intents=intents) @bot.event async def on_ready(): print("Bot is ready") print("Username: {}".format(bot.user.name)) print("ID: {}".format(bot.user.id)) print("Discord.py Version: {}".format(discord.__version__)) print("------") @bot.command() async def linkwallet(ctx): await ctx.author.send("Click on this link to connect your MetaMask Wallet") await ctx.author.send("Link your wallet here: http://127.0.0.1:5000/{}".format(ctx.author.id)) @bot.command() async def readuser(ctx, userid: str): r = requests.post('http://127.0.0.1:5000/read', json={'discordId': userid}) await ctx.send(r.text) bot.run(token) ``` So what we are doing is simple, first `linkwallet` command which actually sending a DM with a link like this to connect: `http://127.0.0.1:5000/` And `readuser` gets a `userid` and send a JSON request to read and returns the `JSON` response back to the user! ## Try it out! Let's run the `flask` app: ```bash cd flask flask run ``` And let's run the bot: ```bash cd discordbot python bot.py ``` ## Video Demo: %[https://www.youtube.com/watch?v=3NBCYG2rbjc] ## Important Links 🔗 - [GitHub Repo](https://github.com/Omar8345/metamask-discord) ## Thanks for reading!!! Thanks for reading this article 🚀 Hope you learned something **useful !!!**