Initial smart contract from the hackaton.

A very naive implementation of smart contract that allows match-making
between donors and donators in a decentralized manner.

Co-authored-by: KDOT2509 <[email protected]>

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/visualstudiocode,soliditytruffle,solidity
+# Edit at https://www.toptal.com/developers/gitignore?templates=visualstudiocode,soliditytruffle,solidity
+
+### Solidity ###
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+logs
+*.log
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+### SolidityTruffle ###
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contracts/ABO.sol

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+// SPDX-License-Identifier: GPL-3.0
+// Solidity program to demonstrate
+// how to create a contract
+pragma solidity >=0.7.0 <0.9.0;
+pragma abicoder v2;
+
+
+// Creating a contract
+contract ABO {	
+    // Declaring variable
+    address public betterOcean = 0x86D15B422D924D9115986Dd7A87ee794CAF2cbaF;
+    mapping (address => bool) public ngoWallets;
+    mapping (uint => abo_contract) public projectIdToContract;
+    mapping (uint => ngoEvent) public eventIdToNgoEvent;
+    uint public nextProjectId = 0;
+    uint public nextEventId = 0;
+    uint public aboFeeInPercent = 2;
+
+
+    struct abo_contract{
+        uint projectID;
+        address ngoAddress;
+        address donorAddress;
+        uint donation;
+        string pointer;
+        //bool paid;
+        //string label;
+    }
+
+    struct ngoEvent{
+        uint eventID;
+        uint projectID;
+        address ngoAddress;
+        //uint cost;
+        string urlToRealLiveData;
+    }
+
+    // abo_contract[] public abo_contracts;
+
+    modifier isBetterOcean() {
+        require(msg.sender == betterOcean);
+        _;
+    }
+
+    modifier isValidNgo() {
+        require(ngoWallets[msg.sender]);
+        _;
+    }
+
+    function whitelistNgo(address _ngoAddress) isBetterOcean public {
+        ngoWallets[_ngoAddress] = true;
+    }
+
+    function createContract(uint _donation, string memory _pointer) isValidNgo public {
+        uint projectId = nextProjectId++;
+        projectIdToContract[projectId] = abo_contract(projectId, msg.sender, address(0), _donation, _pointer);
+    }
+
+    function getContracts() public view returns (abo_contract[] memory) {
+        abo_contract [] memory memoryArray = new abo_contract[](nextProjectId);
+        for(uint i = 0; i < nextProjectId; i++) {
+            memoryArray[i] = projectIdToContract[i];
+        }
+        return memoryArray;
+    }
+
+    function donate(uint _projectId) public payable{
+        require(msg.value == projectIdToContract[_projectId].donation * (1 ether));        
+        uint aboFee = msg.value * aboFeeInPercent / 100; 
+        uint ngoAmount = msg.value - aboFee; 
+        // make a payment to NGO
+        address ngoAddress  = projectIdToContract[_projectId].ngoAddress;
+        payable(ngoAddress).transfer(ngoAmount);
+        // make a payment ABO
+        payable(betterOcean).transfer(aboFee);
+        abo_contract storage myContract = projectIdToContract[_projectId];
+        myContract.donorAddress = msg.sender;
+    } 
+
+    function logNgoEvent(uint _projectId, string memory _pointerToRealLiveData) public isValidNgo {
+        uint eventId = nextEventId++;
+        eventIdToNgoEvent[eventId] = ngoEvent(eventId, _projectId, msg.sender, _pointerToRealLiveData);
+
+    }
+
+    function getNgoEvents() public view returns (ngoEvent[] memory) {
+        ngoEvent [] memory eventLog = new ngoEvent[](nextEventId);
+        for(uint i = 0; i < nextEventId; i++) {
+            eventLog[i] = eventIdToNgoEvent[i];
+        }
+        return eventLog;
+    }
+}

contracts/Migrations.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.4.22 <0.9.0;
+
+contract Migrations {
+  address public owner = msg.sender;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    require(
+      msg.sender == owner,
+      "This function is restricted to the contract's owner"
+    );
+    _;
+  }
+
+  function setCompleted(uint completed) public restricted {
+    last_completed_migration = completed;
+  }
+}

migrations/1_initial_migration.js

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+const Migrations = artifacts.require("Migrations");
+
+module.exports = function (deployer) {
+  deployer.deploy(Migrations);
+};