add stripe endpoint for genesis re

.env.sample

@@ -1 +1,5 @@
-INFURA_KEY=
+INFURA_KEY=
+STRIPE_SECRET_KEY=sk_
+STRIPE_PUBLISHABLE_KEY=pk_
+STRIPE_WEBHOOK_SECRET=whsec_
+STATIC_DIR="https://genesis.re/"

contracts/min-Genesis.js

@@ -0,0 +1,13 @@
+const GENESIS_ADDRESS = "0x3ef61d25b2bf303de52efdd5e50698bed8f9eb8d";
+const GENESIS_ABI = [
+	{
+		//@ts-ignore
+		inputs: [],
+		name: "currentPrice",
+		outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+		stateMutability: "view",
+		type: "function",
+	},
+];
+
+module.exports = { GENESIS_ADDRESS, GENESIS_ABI };

controllers/stripeController.js

@@ -0,0 +1,155 @@
+const { default: Stripe } = require("stripe");
+const { GENESIS_ABI, GENESIS_ADDRESS } = require("../contracts/min-Genesis");
+const express = require("express");
+const { ethers } = require("ethers");
+const bodyParser = require("body-parser");
+const env = require("dotenv");
+env.config({ path: "./.env" });
+const router = express.Router();
+const stripe = new Stripe(process.env.STRIPE_SECRET_KEY, {
+	apiVersion: "2023-10-16",
+	appInfo: {
+		// For sample support and debugging, not required for production:
+		name: "Genesis RE",
+		url: "https://genesis.re/",
+		version: "1.1.0",
+	},
+});
+
+router.get("/config", (_, res) => {
+	// Serve checkout page.
+	res.send({
+		publishableKey: process.env.STRIPE_PUBLISHABLE_KEY,
+	});
+});
+
+async function convertEthToEur(ethPrice) {
+	try {
+		const response = await fetch(
+			"https://api.coingecko.com/api/v3/simple/price?ids=ethereum&vs_currencies=eur"
+		);
+		const data = await response.json();
+
+		const eurPrice = ethPrice * data.ethereum.eur;
+		return eurPrice;
+	} catch (err) {
+		console.error(err);
+		return null;
+	}
+}
+async function getCurrentPrice() {
+	try {
+		const network = "homestead"; // MAINNET
+
+		const provider = new ethers.providers.InfuraProvider(
+			network,
+			process.env.INFURA_KEY
+		);
+		let GENESIS = new ethers.Contract(GENESIS_ADDRESS, GENESIS_ABI, provider);
+		let currentPrice = ethers.utils.formatEther(await GENESIS.currentPrice());
+
+		const currentPriceEur = await convertEthToEur(Number(currentPrice));
+		if (currentPriceEur !== null) {
+			console.log(
+				"Current price: " + currentPrice + " ETH or " + currentPriceEur + " EUR"
+			);
+			return currentPriceEur;
+		} else {
+			console.log("Unable to fetch EUR price");
+		}
+	} catch (err) {
+		console.log(err);
+	}
+}
+router.get("/create-payment-intent", async (req, res) => {
+	const price = await getCurrentPrice();
+	// Create a PaymentIntent with the order amount and currency.
+	const params = {
+		amount: Math.round(Number(price * 100)),
+		currency: "EUR",
+		automatic_payment_methods: {
+			enabled: true,
+		},
+	};
+	try {
+		const paymentIntent = await stripe.paymentIntents.create(params);
+
+		// Send publishable key and PaymentIntent client_secret to client.
+		res.send({
+			clientSecret: paymentIntent.client_secret,
+			amount: Math.round(Number(price)),
+		});
+	} catch (e) {
+		res.status(400).send({
+			error: {
+				message: e.message,
+			},
+		});
+	}
+});
+router.get("/create-test-intent", async (req, res) => {
+	// Create a PaymentIntent with the order amount and currency.
+	const params = {
+		amount: 100,
+		currency: "EUR",
+		automatic_payment_methods: {
+			enabled: true,
+		},
+	};
+	try {
+		const paymentIntent = await stripe.paymentIntents.create(params);
+
+		// Send publishable key and PaymentIntent client_secret to client.
+		res.send({
+			clientSecret: paymentIntent.client_secret,
+			amount: 1,
+		});
+	} catch (e) {
+		res.status(400).send({
+			error: {
+				message: e.message,
+			},
+		});
+	}
+});
+router.post(
+	"/webhook",
+	// Use body-parser to retrieve the raw body as a buffer.
+	// @ts-ignore
+	bodyParser.raw({ type: "application/json" }),
+	async (req, res) => {
+		// Retrieve the event by verifying the signature using the raw body and secret.
+		let event;
+
+		try {
+			event = stripe.webhooks.constructEvent(
+				req.body,
+				req.headers["stripe-signature"],
+				process.env.STRIPE_WEBHOOK_SECRET
+			);
+		} catch (err) {
+			console.log(`⚠️  Webhook signature verification failed.`);
+			res.sendStatus(400);
+			return;
+		}
+
+		// Extract the data from the event.
+		const data = event.data;
+		const eventType = event.type;
+
+		if (eventType === "payment_intent.succeeded") {
+			// Cast the event into a PaymentIntent to make use of the types.
+			const pi = data.object;
+			// Funds have been captured
+			// Fulfill any orders, e-mail receipts, etc
+			// To cancel the payment after capture you will need to issue a Refund (https://stripe.com/docs/api/refunds).
+			console.log("💰 Payment captured!");
+		} else if (eventType === "payment_intent.payment_failed") {
+			// Cast the event into a PaymentIntent to make use of the types.
+			const pi = data.object;
+			console.log("❌ Payment failed.");
+		}
+		res.sendStatus(200);
+	}
+);
+module.exports = router;

index.js

@@ -18,6 +18,7 @@ const ADDRESS_staging = require("./contracts/Address-staging");
 
 const ABI_prod = require("./contracts/ABI-prod");
 const ABI_staging = require("./contracts/ABI-staging");
+const stripeController = require("./controllers/stripeController");
 const evaluationController = require("./controllers/evaluationController");
 
 // Some quirky issue: https://github.com/ethers-io/ethers.js/discussions/4387 (hard to tell why it is required, a dedicated format for events)
@@ -434,6 +435,8 @@ function _saveOrganisationToDB(
 
 app.use("/", evaluationController);
 
+app.use("/", stripeController);
+
 app.get("/reports", async (req, res) => {
 	const reportItems = await grabReports();
 	res.json(reportItems);

package.json

@@ -16,9 +16,10 @@
         "dotenv": "^16.3.1",
         "ethers": "^5.6",
         "express": "^4.18.2",
-        "sqlite3": "^5.1.6"
+        "sqlite3": "^5.1.6",
+        "stripe": "^14.18.0"
     },
     "devDependencies": {
         "nodemon": "^3.0.1"
     }
-}
+}

yarn.lock

@@ -518,6 +518,13 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.18.33.tgz#8c29a0036771569662e4635790ffa9e057db379b"
   integrity sha512-qelS/Ra6sacc4loe/3MSjXNL1dNQ/GjxNHVzuChwMfmk7HuycRLVQN2qNY3XahK+fZc5E2szqQSKUyAF0E+2bg==
 
+"@types/node@>=8.1.0":
+  version "20.11.20"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.11.20.tgz#f0a2aee575215149a62784210ad88b3a34843659"
+  integrity sha512-7/rR21OS+fq8IyHTgtLkDK949uzsa6n8BkziAKtPVpugIkO6D+/ooXMvzXxDnZrmtXVfjb1bKQafYpb8s89LOg==
+  dependencies:
+    undici-types "~5.26.4"
+
 "@vercel/[email protected]":
   version "7.4.1"
   resolved "https://registry.yarnpkg.com/@vercel/build-utils/-/build-utils-7.4.1.tgz#5274e79e6ec64606cf262bb43108e028212825cb"
@@ -2150,6 +2157,13 @@ [email protected]:
   dependencies:
     side-channel "^1.0.4"
 
+qs@^6.11.0:
+  version "6.11.2"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.11.2.tgz#64bea51f12c1f5da1bc01496f48ffcff7c69d7d9"
+  integrity sha512-tDNIz22aBzCDxLtVH++VnTfzxlfeK5CbqohpSqpJgj1Wg/cQbStNAz3NuqCs5vV+pjBsK4x4pN9HlVh7rcYRiA==
+  dependencies:
+    side-channel "^1.0.4"
+
 queue-microtask@^1.2.2:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/queue-microtask/-/queue-microtask-1.2.3.tgz#4929228bbc724dfac43e0efb058caf7b6cfb6243"
@@ -2420,6 +2434,14 @@ strip-json-comments@~2.0.1:
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
   integrity sha512-4gB8na07fecVVkOI6Rs4e7T6NOTki5EmL7TUduTs6bu3EdnSycntVJ4re8kgZA+wx9IueI2Y11bfbgwtzuE0KQ==
 
+stripe@^14.18.0:
+  version "14.18.0"
+  resolved "https://registry.yarnpkg.com/stripe/-/stripe-14.18.0.tgz#71f6d192c322418bd0962897006b0f47e232f94c"
+  integrity sha512-yLqKPqYgGJbMxrQiE4+i2i00ZVA2NRIZbZ1rejzj5XR3F3Uc+1iy9QE133knZudhVGMw367b8vTpB8D9pYMETw==
+  dependencies:
+    "@types/node" ">=8.1.0"
+    qs "^6.11.0"
+
 supports-color@^5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
@@ -2548,6 +2570,11 @@ undefsafe@^2.0.5:
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
   integrity sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==
 
+undici-types@~5.26.4:
+  version "5.26.5"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
+  integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
+
 [email protected]:
   version "5.26.5"
   resolved "https://registry.yarnpkg.com/undici/-/undici-5.26.5.tgz#f6dc8c565e3cad8c4475b187f51a13e505092838"