From 16904359993ccc3353f0c70118246473768919fa Mon Sep 17 00:00:00 2001
From: wsdt <kevin.riedl@wavect.io>
Date: Wed, 5 Jun 2024 11:53:35 +0200
Subject: [PATCH 1/3] feat: add captcha contract

---
 contracts/test/TestCaptcha.sol | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 contracts/test/TestCaptcha.sol

diff --git a/contracts/test/TestCaptcha.sol b/contracts/test/TestCaptcha.sol
new file mode 100644
index 0000000..f99db63
--- /dev/null
+++ b/contracts/test/TestCaptcha.sol
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.12;
+
+import "../samples/HybridAccount.sol";
+
+contract TestCaptcha {
+    address payable immutable helperAddr;
+
+    constructor(address payable _helperAddr) {
+        helperAddr = _helperAddr;
+    }
+
+    function verifycaptcha(string calldata userAddress, string calldata uuid, string calldata captchaInput) public returns (bool) {
+        HybridAccount ha = HybridAccount(helperAddr);
+
+        bytes memory req = abi.encodeWithSignature(
+            "verifyCaptcha(string,string,string)",
+            userAddress,
+            uuid,
+            captchaInput
+        );
+        bytes32 userKey = bytes32(abi.encode(msg.sender));
+        (uint32 error, bytes memory ret) = ha.CallOffchain(userKey, req);
+
+        if (error != 0) {
+            revert(string(ret));
+        }
+
+        bool isVerified;
+        (isVerified) = abi.decode(ret, (bool));
+        return isVerified;
+    }
+}

From bbb3a6be7a6af907600ea14eb3b38a857ec8845b Mon Sep 17 00:00:00 2001
From: wsdt <kevin.riedl@wavect.io>
Date: Thu, 6 Jun 2024 11:17:46 +0200
Subject: [PATCH 2/3] feat: add withdraw, receive and getBalance to contract

---
 contracts/test/TestCaptcha.sol | 35 ++++++++++++++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

diff --git a/contracts/test/TestCaptcha.sol b/contracts/test/TestCaptcha.sol
index f99db63..2819091 100644
--- a/contracts/test/TestCaptcha.sol
+++ b/contracts/test/TestCaptcha.sol
@@ -1,16 +1,39 @@
 // SPDX-License-Identifier: GPL-3.0
 pragma solidity ^0.8.12;
 
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import "../samples/HybridAccount.sol";
 
-contract TestCaptcha {
+contract TestCaptcha is Ownable {
     address payable immutable helperAddr;
+    IERC20 public token;
+
+    uint256 private constant SAFE_GAS_STIPEND = 6000;
 
     constructor(address payable _helperAddr) {
         helperAddr = _helperAddr;
     }
 
-    function verifycaptcha(string calldata userAddress, string calldata uuid, string calldata captchaInput) public returns (bool) {
+    event Withdraw(address receiver, uint256 nativeAmount);
+
+    receive() external payable {}
+
+    function withdraw(uint256 _nativeAmount) public onlyOwner {
+        (bool sent, ) = msg.sender.call{
+            gas: SAFE_GAS_STIPEND,
+            value: _nativeAmount
+        }("");
+        require(sent, "Failed to send native Ether");
+
+        emit Withdraw(msg.sender, _nativeAmount);
+    }
+
+    function verifycaptcha(
+        string calldata userAddress,
+        string calldata uuid,
+        string calldata captchaInput
+    ) public returns (bool) {
         HybridAccount ha = HybridAccount(helperAddr);
 
         bytes memory req = abi.encodeWithSignature(
@@ -30,4 +53,12 @@ contract TestCaptcha {
         (isVerified) = abi.decode(ret, (bool));
         return isVerified;
     }
+
+    function getBalances()
+        public
+        view
+        returns (uint256 nativeBalance)
+    {
+        nativeBalance = address(this).balance;
+    }
 }

From aaa2663870f9c98184c4a4a03920e2fc2880341c Mon Sep 17 00:00:00 2001
From: "Riedl Kevin, Bsc" <kevin.riedl.privat@gmail.com>
Date: Thu, 6 Jun 2024 15:34:45 +0200
Subject: [PATCH 3/3] Update TestCaptcha.sol

---
 contracts/test/TestCaptcha.sol | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

diff --git a/contracts/test/TestCaptcha.sol b/contracts/test/TestCaptcha.sol
index 2819091..03b5e30 100644
--- a/contracts/test/TestCaptcha.sol
+++ b/contracts/test/TestCaptcha.sol
@@ -7,8 +7,12 @@ import "../samples/HybridAccount.sol";
 
 contract TestCaptcha is Ownable {
     address payable immutable helperAddr;
+    uint256 constant public nativeFaucetAmount = 0.01 ether;
+    uint256 constant public waitingPeriod = 1 days;
     IERC20 public token;
 
+    mapping(address => uint256) public claimRecords;
+
     uint256 private constant SAFE_GAS_STIPEND = 6000;
 
     constructor(address payable _helperAddr) {
@@ -30,17 +34,17 @@ contract TestCaptcha is Ownable {
     }
 
     function verifycaptcha(
-        string calldata userAddress,
-        string calldata uuid,
-        string calldata captchaInput
-    ) public returns (bool) {
+        address _to,
+        bytes32 _uuid,
+        string memory _key
+    ) private returns (bool) {
         HybridAccount ha = HybridAccount(helperAddr);
 
         bytes memory req = abi.encodeWithSignature(
             "verifyCaptcha(string,string,string)",
-            userAddress,
-            uuid,
-            captchaInput
+             _to,
+            _uuid,
+            _key
         );
         bytes32 userKey = bytes32(abi.encode(msg.sender));
         (uint32 error, bytes memory ret) = ha.CallOffchain(userKey, req);
@@ -54,11 +58,15 @@ contract TestCaptcha is Ownable {
         return isVerified;
     }
 
-    function getBalances()
-        public
-        view
-        returns (uint256 nativeBalance)
-    {
-        nativeBalance = address(this).balance;
+ function getTestnetETH(
+        bytes32 _uuid,
+        string memory _key,
+        address _to) external {
+        require(claimRecords[_to] + waitingPeriod <= block.timestamp, 'Invalid request');
+        require(verifyCaptcha(_to, _uuid, _key), "Invalid captcha");
+        claimRecords[_to] = block.timestamp;
+
+        (bool sent,) = (_to).call{gas: SAFE_GAS_STIPEND, value: nativeFaucetAmount}("");
+        require(sent, "Failed to send native");
     }
 }