add recipient registry task

contracts/tasks/deployRecipientRegistry.ts

@@ -0,0 +1,76 @@
+/**
+ * Deploy a new recipient registry
+ *
+ * Sample usage:
+ *
+ * yarn hardhat deploy-recipient-registry \
+ *  --network arbitrum-goerli \
+ *  --factory 0x85802c7871e7e778Ec376F097b56BD7299250b8D \
+ *  --type optimistic
+ */
+import { task, types } from 'hardhat/config'
+import { Contract } from 'ethers'
+
+// Number.MAX_SAFE_INTEGER - 1
+const challengePeriodSeconds = 9007199254740990
+
+task('deploy-recipient-registry', 'Deploy a new recipient registry')
+  .addParam('factory', 'The funding round factory contract address')
+  .addParam(
+    'type',
+    'The recipient registry type, e.g. simple, optimistic',
+    'optimistic'
+  )
+  .addOptionalParam(
+    'deposit',
+    'The base deposit for optimistic recipient registry',
+    '0.001'
+  )
+  .addOptionalParam(
+    'challengePeriod',
+    'The challenge period in seconds for optimistic recipient registry',
+    challengePeriodSeconds,
+    types.int
+  )
+  .setAction(
+    async ({ factory, type, deposit, challengePeriod }, { ethers }) => {
+      const [deployer] = await ethers.getSigners()
+      const fundingRoundFactory = await ethers.getContractAt(
+        'FundingRoundFactory',
+        factory
+      )
+
+      let recipientRegistry: Contract
+      if (type === 'simple') {
+        const SimpleRecipientRegistry = await ethers.getContractFactory(
+          'SimpleRecipientRegistry',
+          deployer
+        )
+        recipientRegistry = await SimpleRecipientRegistry.deploy(
+          fundingRoundFactory.address
+        )
+      } else if (type === 'optimistic') {
+        const OptimisticRecipientRegistry = await ethers.getContractFactory(
+          'OptimisticRecipientRegistry',
+          deployer
+        )
+        recipientRegistry = await OptimisticRecipientRegistry.deploy(
+          ethers.utils.parseUnits(deposit),
+          challengePeriod,
+          fundingRoundFactory.address
+        )
+      } else {
+        throw new Error('unsupported recipient registry type')
+      }
+
+      await recipientRegistry.deployTransaction.wait()
+      console.log(`Recipient registry deployed: ${recipientRegistry.address}`)
+
+      const setRecipientRegistryTx =
+        await fundingRoundFactory.setRecipientRegistry(
+          recipientRegistry.address
+        )
+      await setRecipientRegistryTx.wait()
+      console.log('Done!')
+    }
+  )