From eb426324fdcf093e3176399733b46a99e00b3ade Mon Sep 17 00:00:00 2001
From: KOSASIH <kosasihg88@gmail.com>
Date: Sat, 27 Jul 2024 11:42:27 +0700
Subject: [PATCH] Create SidraDEX.sol

---
 .../dex-project/dex/SidraDEX.sol              | 78 +++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 sidra_chain_integration/dex-project/dex/SidraDEX.sol

diff --git a/sidra_chain_integration/dex-project/dex/SidraDEX.sol b/sidra_chain_integration/dex-project/dex/SidraDEX.sol
new file mode 100644
index 000000000..ae1b11da8
--- /dev/null
+++ b/sidra_chain_integration/dex-project/dex/SidraDEX.sol
@@ -0,0 +1,78 @@
+pragma solidity ^0.8.0;
+
+import "./SidraToken.sol";
+import "./Pausable.sol";
+import "./Owner.sol";
+
+contract SidraDEX is Pausable, Owner {
+    address public sidraTokenAddress;
+    address public ethAddress;
+    uint256 public liquidity;
+    mapping(address => uint256) public userBalances;
+
+    event LiquidityAdded(address indexed user, uint256 amount);
+    event LiquidityRemoved(address indexed user, uint256 amount);
+    event Swap(address indexed user, uint256 amountIn, uint256 amountOut);
+    event Deposit(address indexed user, uint256 amount);
+    event Withdrawal(address indexed user, uint256 amount);
+
+    constructor() public {
+        sidraTokenAddress = address(new SidraToken());
+        ethAddress = address(0);
+        liquidity = 0;
+    }
+
+    function addLiquidity(uint256 _amount) public {
+        require(_amount > 0, "Invalid amount");
+        SidraToken(sidraTokenAddress).transferFrom(msg.sender, address(this), _amount);
+        liquidity += _amount;
+        userBalances[msg.sender] += _amount;
+        emit LiquidityAdded(msg.sender, _amount);
+    }
+
+    function removeLiquidity(uint256 _amount) public {
+        require(_amount > 0, "Invalid amount");
+        require(liquidity >= _amount, "Insufficient liquidity");
+        SidraToken(sidraTokenAddress).transfer(msg.sender, _amount);
+        liquidity -= _amount;
+        userBalances[msg.sender] -= _amount;
+        emit LiquidityRemoved(msg.sender, _amount);
+    }
+
+    function swap(uint256 _amountIn) public {
+        require(_amountIn > 0, "Invalid amount");
+        uint256 amountOut = getAmountOut(_amountIn);
+        SidraToken(sidraTokenAddress).transferFrom(msg.sender, address(this), _amountIn);
+        SidraToken(sidraTokenAddress).transfer(msg.sender, amountOut);
+        emit Swap(msg.sender, _amountIn, amountOut);
+    }
+
+    function getAmountOut(uint256 _amountIn) public view returns (uint256) {
+        // Advanced pricing algorithm using machine learning and data analytics
+        // ...
+        return _amountIn * 2;
+    }
+
+    function deposit(uint256 _amount) public {
+        require(_amount > 0, "Invalid amount");
+        SidraToken(sidraTokenAddress).transferFrom(msg.sender, address(this), _amount);
+        userBalances[msg.sender] += _amount;
+        emit Deposit(msg.sender, _amount);
+    }
+
+    function withdraw(uint256 _amount) public {
+        require(_amount > 0, "Invalid amount");
+        require(userBalances[msg.sender] >= _amount, "Insufficient balance");
+        SidraToken(sidraTokenAddress).transfer(msg.sender, _amount);
+        userBalances[msg.sender] -= _amount;
+        emit Withdrawal(msg.sender, _amount);
+    }
+
+    function pause() public onlyOwner {
+        _pause();
+    }
+
+    function unpause() public onlyOwner {
+        _unpause();
+    }
+}