From 37269c4fc4374f7b394bc063cd52181e7aee4ef6 Mon Sep 17 00:00:00 2001
From: kozuelam <47081678+kozuelam@users.noreply.github.com>
Date: Wed, 12 Aug 2020 09:16:21 -0400
Subject: [PATCH] add minibank solidity contract

---
 minibank.sol | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 minibank.sol

diff --git a/minibank.sol b/minibank.sol
new file mode 100644
index 00000000..197c375d
--- /dev/null
+++ b/minibank.sol
@@ -0,0 +1,53 @@
+pragma solidity ^0.5.12;
+
+contract MiniBank {
+
+    // the contract owner
+    address public owner;
+    // the bank accounts mapper
+    mapping (address => uint) private accounts;
+    // event for deposit log
+    event LogDeposit(address indexed accountAddress, uint amount);
+    // event for withdraw log
+    event LogWithdraw(address indexed withdrawAddress, uint amount);
+
+    constructor()  public {
+        // 1. set the owner to your current account 
+        // add the code here
+    }
+
+    /// Deposit amount into MiniBank
+    /// @return User balance after the deposit is made
+    function deposit() public payable returns (uint) {
+        
+        require((accounts[msg.sender] + msg.value) >= accounts[msg.sender]);
+        
+        // 2. add msg.value to the user account
+        // add the code here
+       
+        
+        emit LogDeposit(msg.sender, msg.value); 
+        return accounts[msg.sender];
+    }
+
+    /// Withdraw amount from MiniBank
+    /// @param withdraw amount
+    /// @return The ramaining balance 
+    function withdraw(uint withdrawAmount) public returns (uint) {
+        require(withdrawAmount <= accounts[msg.sender]);
+        // 3. decrease user balance
+        // add the code here
+        
+        msg.sender.transfer(withdrawAmount);
+        
+        // 4. emit LogWithdraw event
+        // add the code here
+       
+        return accounts[msg.sender];
+    }
+
+    /// @return The user balance
+     function balance() view public returns (uint) {
+        return accounts[msg.sender];
+    }
+}