Merge pull request #34 from coderbunker/issue5-to_blockchain

Issue5 to blockchain
coderbunker · Jan 11, 2020 · 2b95c0b · 2b95c0b
2 parents d9c8c67 + 678fec0
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diff --git a/to_blockchain/README.md b/to_blockchain/README.md
@@ -0,0 +1,39 @@
+# timesheet-backend/to_blockchain
+
+Basic "skeleton" implementation of storage smart contract + simple interface to store data on smart contract
+
+To test the following code you need Node.js and NPM
+
+run
+
+```bash
+npm install -g ethereumjs-testrpc
+```
+
+then start it
+
+```bash
+testrpc
+```
+In different terminal window in to_blockchain directory run
+
+```bash
+npm init
+```
+
+```bash
+npm install ethereum/web3.js --save
+```
+
+copy code from data_storage_contract.sol to http://remix.ethereum.org/ compile code and deploy it to "Web3 Provider" of your test network
+
+change 
+
+```
+var data_storage = data_storage_contract.at("YOU SMART CONTRACT'S ADDRESS");
+```
+run index.html
+
+now you can store data in smart contract in the format : address, string, string
+
+run getProjects on Remix to see smart contracts of projects in the "database" 
diff --git a/to_blockchain/data_storage_contract.sol b/to_blockchain/data_storage_contract.sol
@@ -0,0 +1,75 @@
+pragma solidity ^0.4.23;
+
+contract data_storage_contract {
+
+    struct Freelancer {
+        string id; //freelancer id hash
+        string name; //freelancer's name
+        address projectAddress; //project's ethereum address
+        uint128 hoursSpent; 
+    }
+
+    // struct for storing projects related information
+    struct Project {  
+        string id;  // project id hash
+        string name; //project name
+    }
+
+    mapping (address => Project) projects; // bind project's address to Project type struct
+    address[] public projectAccounts;
+
+    mapping (address => Freelancer) freelancers; // bind freelancer's address to freelancer type struct
+    address[] public freelancerAccounts;
+
+    function addProject(address _address, string _id, string _name) public { 
+        Project storage project = projects[_address];
+
+        project.id = _id;
+        project.name = _name;
+
+        projectAccounts.push(_address) -1;
+    }
+
+    function getProjects() view public returns(address[]){ // get list of all project's wallets
+        return projectAccounts;
+    }
+
+    function getProject(address _address) view public returns(string, string){ // get data for a specific project
+        return (projects[_address].id, projects[_address].name);
+    }
+
+    function addFreelancer(address _address, 
+                           string _id, 
+                           string _name, 
+                           address _projectAddress, 
+                           uint128 _hoursSpent) public{
+        Freelancer storage freelancer = freelancers[_address];
+
+        freelancer.id = _id;
+        freelancer.name = _name;
+        freelancer.projectAddress = _projectAddress;
+        freelancer.hoursSpent = _hoursSpent;
+    }
+
+    function getFreelancers() view public returns(address[]){ // get list of all freelancer's wallets
+        return freelancerAccounts;
+    }
+
+    function getFreelancer(address _address) view public returns(string, string, address, uint128){ // get data for a specific freelancer
+        return (freelancers[_address].id, 
+                freelancers[_address].name, 
+                freelancers[_address].projectAddress, 
+                freelancers[_address].hoursSpent);
+    }
+
+    function freelancerToProject(address _address) view public returns(address){
+        return freelancers[_address].projectAddress;
+    }
+
+
+
+}
+
+
+
+
diff --git a/to_blockchain/index.html b/to_blockchain/index.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+
+    <link rel="stylesheet" type="text/css" href="main.css">
+
+    <script src="./node_modules/web3/dist/web3.min.js"></script>
+    <script src="storage_abi.js"></script>
+
+</head>
+<body>
+    <div class="container">
+
+        <h1>Add Project</h1>
+
+
+        <label for="name" class="col-lg-2 control-label">Project's Ethereum address</label>
+        <input id="wallet" type="text">  <!-- project's wallet address input  -->
+
+        <label for="name" class="col-lg-2 control-label">ID</label>
+        <input id="id" type="text"> <!-- project's ID input  -->
+
+        <label for="name" class="col-lg-2 control-label">Project Name</label>
+        <input id="name" type="text"> <!-- project's name input  -->
+
+
+        <button id="button">Update Project</button>
+
+
+    </div>
+
+    <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
+
+    <script>
+
+        if (typeof web3 !== 'undefined') {
+            web3 = new Web3(web3.currentProvider);
+        } else {
+            // set the provider you want from Web3.providers
+            web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
+        }
+
+
+        var data_storage_contract = web3.eth.contract(storageABI);
+
+        var data_storage = data_storage_contract.at('0xad1bd8707cb092d85c1b5b67515a0b5aec762a15'); //storage smart contract's address on testnet, put address on your testnet in order  test the code
+
+
+        $("#button").click(function() {
+            data_storage.addProject($("#wallet").val(), $("#id").val(), $("#name").val(), {from: web3.eth.accounts[1], gas:3000000});
+        }); //generate transaction to storage smart contract containing project's wallet, id and name from account number 1 on our testnet 
+
+
+    </script>
+
+</body>
+</html>
+
diff --git a/to_blockchain/main.css b/to_blockchain/main.css
@@ -0,0 +1,29 @@
+body {
+    background-color:#F0F0F0;
+    padding: 2em;
+    font-family: 'Raleway','Source Sans Pro', 'Arial';
+}
+.container {
+    width: 50%;
+    margin: 0 auto;
+}
+label {
+    display:block;
+    margin-bottom:10px;
+}
+input {
+    padding:10px;
+    width: 50%;
+    margin-bottom: 1em;
+}
+button {
+    margin: 2em 0;
+    padding: 1em 4em;
+    display:block;
+}
+
+#project {
+    padding:1em;
+    background-color:#fff;
+    margin: 1em 0;
+}
diff --git a/to_blockchain/package.json b/to_blockchain/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "to_blockchain",
+  "version": "1.0.0",
+  "description": "Basic \"skeleton\" implementation of storage smart contract",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "web3": "github:ethereum/web3.js"
+  }
+}