redeem-cheque WIP

Reproducing invalid signature error

scripts/redeem-cheque.js

@@ -0,0 +1,59 @@
+const hre = require("hardhat");
+const eip712 = require("ethers-eip712");
+
+const EIP712Domain = [
+    { name: 'name', type: 'string' },
+    { name: 'version', type: 'string' },
+    { name: 'chainId', type: 'uint256' }
+    // Missing
+    // {name: "verifyingContract", type: "address"},
+]
+
+const ChequeType = [
+    { name: 'chequebook', type: 'address' },
+    { name: 'beneficiary', type: 'address' },
+    { name: 'cumulativePayout', type: 'uint256' }
+]
+
+// XXX Hardcoded from recent deploy to Hardhat dev chain
+var erc20address = "0x5FbDB2315678afecb367f032d93F642f64180aa3";
+var aliceAddress = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";
+var aliceSwapAddress = "0xCafac3dD18aC6c6e92c921884f9E4176737C052c";
+var bobAddress = "0x70997970C51812dc3A010C7d01b50e0d17dc79C8";
+
+
+// XXX Hardcoded return from sign-cheque script of cheque from Alice to Bob:
+// Cheque {
+//  chequebook: '0xCafac3dD18aC6c6e92c921884f9E4176737C052c',
+//  beneficiary: '0x70997970C51812dc3A010C7d01b50e0d17dc79C8',
+//  cumulativePayout: 500
+//}
+var issuerSig = "0xa00dfb22e246211c39e594c35eb3321a8aa99c83cb94ea8dcb311a381181c04637676e95e1f51901a6c1f3423852a2431baed00b0cffca5719698055283069dc1c";
+
+// TODO This should be parameterized with arguments, so probably as a task or standalone script?
+async function main() {
+    var recipient = bobAddress;
+    var cumulativePayout = 500;
+
+    var signers = await ethers.getSigners();
+    var aliceSigner = signers[0];
+    var bobSigner = signers[1];
+
+    var swapArtifact = await artifacts.readArtifact("ERC20SimpleSwap");
+    var swapContract = new ethers.Contract(aliceSwapAddress, swapArtifact.abi, bobSigner);
+
+    var foo = await swapContract.cashChequeBeneficiary(recipient, cumulativePayout, issuerSig);
+    console.log("Resp", foo);
+
+    // Reproduced error here:
+    // ProviderError: VM Exception while processing transaction: revert SimpleSwap: invalid issuer signature
+    // TODO Fix it
+
+};
+
+main()
+  .then(() => process.exit(0))
+  .catch(error => {
+    console.error(error);
+    process.exit(1);
+  });