WIP Adding vesting contracts

abis/TokenVesting.json

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+{
+    "_format": "hh-sol-artifact-1",
+    "contractName": "TokenVesting",
+    "sourceName": "openzeppelin-solidity/contracts/drafts/TokenVesting.sol",
+    "abi": [
+      {
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "beneficiary",
+            "type": "address"
+          },
+          {
+            "internalType": "uint256",
+            "name": "start",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "cliffDuration",
+            "type": "uint256"
+          },
+          {
+            "internalType": "uint256",
+            "name": "duration",
+            "type": "uint256"
+          },
+          {
+            "internalType": "bool",
+            "name": "revocable",
+            "type": "bool"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "nonpayable",
+        "type": "constructor"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "previousOwner",
+            "type": "address"
+          },
+          {
+            "indexed": true,
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "OwnershipTransferred",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "token",
+            "type": "address"
+          }
+        ],
+        "name": "TokenVestingRevoked",
+        "type": "event"
+      },
+      {
+        "anonymous": false,
+        "inputs": [
+          {
+            "indexed": false,
+            "internalType": "address",
+            "name": "token",
+            "type": "address"
+          },
+          {
+            "indexed": false,
+            "internalType": "uint256",
+            "name": "amount",
+            "type": "uint256"
+          }
+        ],
+        "name": "TokensReleased",
+        "type": "event"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "beneficiary",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "cliff",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "duration",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "isOwner",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "owner",
+        "outputs": [
+          {
+            "internalType": "address",
+            "name": "",
+            "type": "address"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": false,
+        "inputs": [
+          {
+            "internalType": "contract IERC20",
+            "name": "token",
+            "type": "address"
+          }
+        ],
+        "name": "release",
+        "outputs": [],
+        "payable": false,
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "token",
+            "type": "address"
+          }
+        ],
+        "name": "released",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": false,
+        "inputs": [],
+        "name": "renounceOwnership",
+        "outputs": [],
+        "payable": false,
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "revocable",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": false,
+        "inputs": [
+          {
+            "internalType": "contract IERC20",
+            "name": "token",
+            "type": "address"
+          }
+        ],
+        "name": "revoke",
+        "outputs": [],
+        "payable": false,
+        "stateMutability": "nonpayable",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "token",
+            "type": "address"
+          }
+        ],
+        "name": "revoked",
+        "outputs": [
+          {
+            "internalType": "bool",
+            "name": "",
+            "type": "bool"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": true,
+        "inputs": [],
+        "name": "start",
+        "outputs": [
+          {
+            "internalType": "uint256",
+            "name": "",
+            "type": "uint256"
+          }
+        ],
+        "payable": false,
+        "stateMutability": "view",
+        "type": "function"
+      },
+      {
+        "constant": false,
+        "inputs": [
+          {
+            "internalType": "address",
+            "name": "newOwner",
+            "type": "address"
+          }
+        ],
+        "name": "transferOwnership",
+        "outputs": [],
+        "payable": false,
+        "stateMutability": "nonpayable",
+        "type": "function"
+      }
+    ]
+  }
+

src/mappings/ERC20VestingFactory/mapping.ts

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+import { TokenVesting, VestingFactory } from '../../types/schema';
+import {
+  ERC20VestingFactory,
+  VestingCreated,
+} from '../../types/templates/ERC20VestingFactory/ERC20VestingFactory';
+import { TokenVesting as TokenVestingContract } from '../../types/templates/TokenVesting/TokenVesting';
+
+export function handleVestingCreated(event: VestingCreated): void {
+  const tokenVestingAddress = event.params.vestingContractAddress;
+
+  // create vestingFactory with ownerAddress + token
+  const vestingFactory = new VestingFactory(event.address.toHexString());
+  let vestingFactoryContract = ERC20VestingFactory.bind(event.address);
+
+  vestingFactory.token = vestingFactoryContract.erc20Token().toHexString();
+  vestingFactory.owner = vestingFactoryContract.vestingOwner().toHexString();
+
+  let tokenVestingContract = TokenVestingContract.bind(tokenVestingAddress);
+
+  let tokenVesting = new TokenVesting(tokenVestingAddress.toHex());
+
+  tokenVesting.beneficiary = tokenVestingContract.beneficiary().toString();
+  tokenVesting.cliff = tokenVestingContract.cliff();
+  tokenVesting.start = tokenVestingContract.start();
+  tokenVesting.duration = tokenVestingContract.duration();
+  tokenVesting.revocable = tokenVestingContract.revocable();
+  tokenVesting.released = tokenVestingContract.released(
+    vestingFactoryContract.erc20Token()
+  );
+  tokenVesting.revoked = tokenVestingContract.revoked(
+    vestingFactoryContract.erc20Token()
+  );
+  tokenVesting.owner = vestingFactory.owner;
+  tokenVesting.token = vestingFactory.token;
+
+  vestingFactory.save();
+
+  tokenVesting.save();
+}
+

src/mappings/ERC20VestingFactory/schema.graphql

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+type VestingFactory @entity {
+  id: ID!
+  token: String!
+  owner: String!
+}
+

src/mappings/ERC20VestingFactory/template.yaml

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+abis:
+  - ERC20VestingFactory
+entities:
+  - VestingFactory
+eventHandlers:
+  - event: VestingCreated(address)
+    handler: handleVestingCreated
+callHandlers:
+  -
+

src/mappings/TokenVesting/mapping.ts

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+import { TokenVesting } from '../../types/schema';
+import {
+  TokensReleased,
+  TokenVestingRevoked,
+} from '../../types/templates/TokenVesting/TokenVesting';
+
+export function handleTokensReleased(event: TokensReleased): void {
+  let tokenVesting = TokenVesting.load(event.address.toHexString());
+
+  if (!tokenVesting) return;
+
+  tokenVesting.released = event.params.amount;
+
+  tokenVesting.save();
+}
+
+export function handleTokenVestingRevoked(event: TokenVestingRevoked): void {
+  let tokenVesting = TokenVesting.load(event.address.toHexString());
+
+  if (!tokenVesting) return;
+
+  // why does the contract have this line? there can be more than one token inside the same vesting contract?
+  // _revoked[address(token)] = true;
+
+  tokenVesting.revoked = true;
+
+  tokenVesting.save();
+}
+

src/mappings/TokenVesting/schema.graphql

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+type TokenVesting @entity {
+  id: ID!
+  owner: String!
+  token: String!
+  beneficiary: String!
+  cliff: BigInt!
+  start: BigInt!
+  duration: BigInt!
+  revocable: Boolean!
+  released: BigInt!
+  revoked: Boolean!
+}
+