From 252d8698fd93b0317a71698b4924bc4a60946a8f Mon Sep 17 00:00:00 2001
From: ctrlc03 <93448202+ctrlc03@users.noreply.github.com>
Date: Tue, 23 Dec 2025 20:44:42 +0100
Subject: [PATCH 1/3] chore: add mint button

---
 examples/CRISP/client/.env.example            |  4 +-
 .../CRISP/client/src/components/Navbar.tsx    | 11 +++
 .../client/src/hooks/generic/useMintToken.tsx | 73 +++++++++++++++++++
 examples/CRISP/client/src/utils/abi.ts        |  6 ++
 examples/CRISP/client/src/utils/constants.ts  |  1 +
 examples/CRISP/server/src/cli/approve.rs      |  2 +-
 6 files changed, 95 insertions(+), 2 deletions(-)
 create mode 100644 examples/CRISP/client/src/hooks/generic/useMintToken.tsx
 create mode 100644 examples/CRISP/client/src/utils/abi.ts
 create mode 100644 examples/CRISP/client/src/utils/constants.ts

diff --git a/examples/CRISP/client/.env.example b/examples/CRISP/client/.env.example
index a17f4aedbb..02234436a2 100644
--- a/examples/CRISP/client/.env.example
+++ b/examples/CRISP/client/.env.example
@@ -1,3 +1,5 @@
 VITE_ENCLAVE_API=http://127.0.0.1:4000
-VITE_TWITTER_SERVERLESS_API=
 VITE_WALLETCONNECT_PROJECT_ID=
+# A token with a public mint function. Also used as the fee token for Enclave. 
+# This is its default address in Hardhat node
+VITE_CRISP_TOKEN="0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0"
diff --git a/examples/CRISP/client/src/components/Navbar.tsx b/examples/CRISP/client/src/components/Navbar.tsx
index 1c4d1d53ca..1ebcd20b11 100644
--- a/examples/CRISP/client/src/components/Navbar.tsx
+++ b/examples/CRISP/client/src/components/Navbar.tsx
@@ -9,6 +9,7 @@ import Logo from '@/assets/icons/logo.svg'
 import { Link } from 'react-router-dom'
 import NavMenu from '@/components/NavMenu'
 import { ConnectKitButton } from 'connectkit'
+import useToken from '@/hooks/generic/useMintToken'
 
 const PAGES = [
   {
@@ -22,6 +23,8 @@ const PAGES = [
 ]
 
 const Navbar: React.FC = () => {
+  const { mintTokens, isMinting } = useToken()
+
   return (
     <nav className='absolute left-0 top-0 z-10 w-screen px-6 lg:px-9'>
       <div className='mx-auto max-w-screen-xl'>
@@ -34,6 +37,14 @@ const Navbar: React.FC = () => {
           </Link>
 
           <div className='flex items-center gap-2 md:gap-8'>
+            <button
+              disabled={isMinting}
+              onClick={mintTokens}
+              className='hover:text-twilight-blue-600 cursor-pointer font-bold text-slate-600 duration-300 ease-in-out hover:opacity-70 max-md:hidden'
+            >
+              Mint tokens
+            </button>
+
             {PAGES.map(({ label, path }) => (
               <Link
                 key={label}
diff --git a/examples/CRISP/client/src/hooks/generic/useMintToken.tsx b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
new file mode 100644
index 0000000000..58d8523e28
--- /dev/null
+++ b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
@@ -0,0 +1,73 @@
+import { iERC20Abi } from '@/utils/abi'
+import { useCallback, useState } from 'react'
+import { usePublicClient, useWalletClient } from 'wagmi'
+import { getChain } from '@/utils/methods'
+import { useNotificationAlertContext } from '@/context/NotificationAlert'
+import { ROUND_TOKEN } from '@/utils/constants'
+
+/**
+ * Hooks to interact with the token contract used to gatekeep access to voting rounds
+ */
+const useToken = () => {
+  const { showToast } = useNotificationAlertContext()
+  const [isMinting, setIsMinting] = useState<boolean>(false)
+
+  const { data: walletClient } = useWalletClient()
+  const publicClient = usePublicClient()
+
+  const mintTokens = useCallback(async () => {
+    if (!walletClient || !publicClient) {
+      showToast({
+        type: 'danger',
+        message: 'Wallet not connected',
+      })
+      return
+    }
+
+    const balance = await publicClient.readContract({
+      abi: iERC20Abi,
+      address: ROUND_TOKEN,
+      functionName: 'balanceOf',
+      args: [walletClient.account.address],
+    })
+
+    if (balance && balance > BigInt(0)) {
+      showToast({
+        type: 'info',
+        message: 'You already have tokens, no need to mint more',
+      })
+      return
+    }
+
+    setIsMinting(true)
+
+    try {
+      await walletClient.writeContract({
+        abi: iERC20Abi,
+        address: ROUND_TOKEN,
+        functionName: 'mint',
+        args: [walletClient.account.address, BigInt(1 * 10e18)],
+        chain: getChain(),
+      })
+      showToast({
+        type: 'success',
+        message: 'Tokens minted successfully',
+      })
+    } catch (error) {
+      console.log(error)
+      showToast({
+        type: 'danger',
+        message: 'Error minting tokens',
+      })
+    } finally {
+      setIsMinting(false)
+    }
+  }, [walletClient, showToast, publicClient])
+
+  return {
+    isMinting,
+    mintTokens,
+  }
+}
+
+export default useToken
diff --git a/examples/CRISP/client/src/utils/abi.ts b/examples/CRISP/client/src/utils/abi.ts
new file mode 100644
index 0000000000..36eecd18ef
--- /dev/null
+++ b/examples/CRISP/client/src/utils/abi.ts
@@ -0,0 +1,6 @@
+import { parseAbi } from 'viem'
+
+export const iERC20Abi = parseAbi([
+  'function balanceOf(address owner) view returns (uint256)',
+  'function mint(address to, uint256 amount) external',
+])
diff --git a/examples/CRISP/client/src/utils/constants.ts b/examples/CRISP/client/src/utils/constants.ts
new file mode 100644
index 0000000000..df92a846ea
--- /dev/null
+++ b/examples/CRISP/client/src/utils/constants.ts
@@ -0,0 +1 @@
+export const ROUND_TOKEN = import.meta.env.VITE_CRISP_TOKEN
diff --git a/examples/CRISP/server/src/cli/approve.rs b/examples/CRISP/server/src/cli/approve.rs
index fe2b848b59..9cc528fd72 100644
--- a/examples/CRISP/server/src/cli/approve.rs
+++ b/examples/CRISP/server/src/cli/approve.rs
@@ -25,7 +25,7 @@ pub async fn approve_token(
     amount: U256,
 ) -> Result<()> {
     use alloy::network::EthereumWallet;
-    use alloy::providers::{Provider, ProviderBuilder};
+    use alloy::providers::{ProviderBuilder};
     use alloy::signers::local::PrivateKeySigner;
 
     let token_address: Address = token_address.parse()?;

From 8145b42b5f9e8b1aec88faf4ad9e07620029ac29 Mon Sep 17 00:00:00 2001
From: ctrlc03 <93448202+ctrlc03@users.noreply.github.com>
Date: Tue, 23 Dec 2025 20:52:42 +0100
Subject: [PATCH 2/3] chore: add licenses

---
 examples/CRISP/client/src/hooks/generic/useMintToken.tsx | 6 ++++++
 examples/CRISP/client/src/utils/abi.ts                   | 6 ++++++
 examples/CRISP/client/src/utils/constants.ts             | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/examples/CRISP/client/src/hooks/generic/useMintToken.tsx b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
index 58d8523e28..dbae16ad43 100644
--- a/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
+++ b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
@@ -1,3 +1,9 @@
+// SPDX-License-Identifier: LGPL-3.0-only
+//
+// This file is provided WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.
+
 import { iERC20Abi } from '@/utils/abi'
 import { useCallback, useState } from 'react'
 import { usePublicClient, useWalletClient } from 'wagmi'
diff --git a/examples/CRISP/client/src/utils/abi.ts b/examples/CRISP/client/src/utils/abi.ts
index 36eecd18ef..b27f93f767 100644
--- a/examples/CRISP/client/src/utils/abi.ts
+++ b/examples/CRISP/client/src/utils/abi.ts
@@ -1,3 +1,9 @@
+// SPDX-License-Identifier: LGPL-3.0-only
+//
+// This file is provided WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.
+
 import { parseAbi } from 'viem'
 
 export const iERC20Abi = parseAbi([
diff --git a/examples/CRISP/client/src/utils/constants.ts b/examples/CRISP/client/src/utils/constants.ts
index df92a846ea..2ad8707314 100644
--- a/examples/CRISP/client/src/utils/constants.ts
+++ b/examples/CRISP/client/src/utils/constants.ts
@@ -1 +1,7 @@
+// SPDX-License-Identifier: LGPL-3.0-only
+//
+// This file is provided WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.
+
 export const ROUND_TOKEN = import.meta.env.VITE_CRISP_TOKEN

From cc5d9e3f9da7f6b6643dc4821ff24d64bd08d255 Mon Sep 17 00:00:00 2001
From: ctrlc03 <93448202+ctrlc03@users.noreply.github.com>
Date: Tue, 23 Dec 2025 21:01:44 +0100
Subject: [PATCH 3/3] chore: pr comments

---
 examples/CRISP/client/.env.example                       | 2 +-
 examples/CRISP/client/src/hooks/generic/useMintToken.tsx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/CRISP/client/.env.example b/examples/CRISP/client/.env.example
index 02234436a2..0a9c39b75e 100644
--- a/examples/CRISP/client/.env.example
+++ b/examples/CRISP/client/.env.example
@@ -2,4 +2,4 @@ VITE_ENCLAVE_API=http://127.0.0.1:4000
 VITE_WALLETCONNECT_PROJECT_ID=
 # A token with a public mint function. Also used as the fee token for Enclave. 
 # This is its default address in Hardhat node
-VITE_CRISP_TOKEN="0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0"
+VITE_CRISP_TOKEN=0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0
diff --git a/examples/CRISP/client/src/hooks/generic/useMintToken.tsx b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
index dbae16ad43..70b9e09c01 100644
--- a/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
+++ b/examples/CRISP/client/src/hooks/generic/useMintToken.tsx
@@ -52,7 +52,7 @@ const useToken = () => {
         abi: iERC20Abi,
         address: ROUND_TOKEN,
         functionName: 'mint',
-        args: [walletClient.account.address, BigInt(1 * 10e18)],
+        args: [walletClient.account.address, BigInt(1 * 1e18)],
         chain: getChain(),
       })
       showToast({