From 0f10ad29e36543829c91e6e9fd1e9b7fc1b10dd5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Yago=20P=C3=A9rez=20V=C3=A1zquez?= <yago@safe.global>
Date: Mon, 2 Oct 2023 12:07:20 +0200
Subject: [PATCH] Add playground

---
 playground/config/run.ts           |  3 +-
 playground/protocol-kit/eip1271.ts | 76 ++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 playground/protocol-kit/eip1271.ts

diff --git a/playground/config/run.ts b/playground/config/run.ts
index 7b546f34a..ad9ceaa0b 100644
--- a/playground/config/run.ts
+++ b/playground/config/run.ts
@@ -4,7 +4,8 @@ const playInput = process.argv[2]
 
 const playgroundProtocolKitPaths = {
   'deploy-safe': 'protocol-kit/deploy-safe',
-  'generate-safe-address': 'protocol-kit/generate-safe-address'
+  'generate-safe-address': 'protocol-kit/generate-safe-address',
+  eip1271: 'protocol-kit/eip1271'
 }
 const playgroundApiKitPaths = {
   'propose-transaction': 'api-kit/propose-transaction',
diff --git a/playground/protocol-kit/eip1271.ts b/playground/protocol-kit/eip1271.ts
new file mode 100644
index 000000000..5210bf796
--- /dev/null
+++ b/playground/protocol-kit/eip1271.ts
@@ -0,0 +1,76 @@
+import Safe from '@safe-global/protocol-kit'
+import { EthersAdapter } from '@safe-global/protocol-kit'
+import { ethers } from 'ethers'
+
+// This file can be used to play around with the Safe Core SDK
+
+interface Config {
+  RPC_URL: string
+  OWNER1_PRIVATE_KEY: string
+  OWNER2_PRIVATE_KEY: string
+  OWNER3_PRIVATE_KEY: string
+  SAFE_2_3_ADDRESS: string
+}
+
+const config: Config = {
+  RPC_URL: '<RPC_URL>',
+  // Create a Safe 2/3 with 3 owners and fill this info
+  OWNER1_PRIVATE_KEY: '<OWNER1_PRIVATE_KEY>',
+  OWNER2_PRIVATE_KEY: '<OWNER2_PRIVATE_KEY>',
+  OWNER3_PRIVATE_KEY: '<OWNER3_PRIVATE_KEY>',
+  SAFE_2_3_ADDRESS: '<SAFE_2_3_ADDRESS>'
+}
+
+async function main() {
+  const provider = new ethers.providers.JsonRpcProvider(config.RPC_URL)
+  const signer1 = new ethers.Wallet(config.OWNER1_PRIVATE_KEY, provider)
+  const signer2 = new ethers.Wallet(config.OWNER2_PRIVATE_KEY, provider)
+
+  // Create safeSdk instances
+  const safeSdk1 = await Safe.create({
+    ethAdapter: new EthersAdapter({
+      ethers,
+      signerOrProvider: signer1
+    }),
+    safeAddress: config.SAFE_2_3_ADDRESS
+  })
+
+  const safeSdk2 = await Safe.create({
+    ethAdapter: new EthersAdapter({
+      ethers,
+      signerOrProvider: signer2
+    }),
+    safeAddress: config.SAFE_2_3_ADDRESS
+  })
+
+  const MESSAGE_TO_SIGN = 'I am the owner of this Safe account'
+
+  const chainId: number = await safeSdk1.getChainId()
+  const safeVersion = await safeSdk1.getContractVersion()
+
+  const messageHash = ethers.utils.hashMessage(MESSAGE_TO_SIGN)
+  const safeMessageHash = await safeSdk1.signatures.getMessageHash(messageHash)
+
+  const ethSignSig = await safeSdk1.signatures.signEIP191Message(safeMessageHash)
+  const typedDataSig = await safeSdk2.signatures.signEIP712Message({
+    safeAddress: config.SAFE_2_3_ADDRESS,
+    safeVersion,
+    chainId,
+    data: messageHash
+  })
+
+  // Validate the signature sending the Safe message hash and the concatenated signatures
+  const isValid = await safeSdk1.signatures.isValidSignature(messageHash, [
+    typedDataSig,
+    ethSignSig
+  ])
+
+  console.log('Message: ', MESSAGE_TO_SIGN)
+  console.log('Message Hash: ', messageHash)
+  console.log('Safe Message Hash: ', safeMessageHash)
+  console.log('Signatures: ', ethSignSig, typedDataSig)
+
+  console.log(`The signature is ${isValid ? 'valid' : 'invalid'}`)
+}
+
+main()