ericxor61a0c0d/studentcoinhack

A student loan network on the ethereum blockchain

StudentCoinHack

A student loan network on the ethereum blockchain

Truffle

Update:

npm uninstall -g truffle

npm install -g truffle

how to install

1. git clone github.com/ericchenmelt/StudentCoinhack

2. cd StudentCoinhack

3. npm install -g truffle

4. npm install -g yarn

5. yarn install

how to build

3. Run the development console.

   truffle develop

4. Compile and migrate the smart contracts. Note inside the development console we don't preface commands with truffle.

   compile
   migrate
   deploy

how to run

1. yarn start

go to localhost:3000

route ideas:

/ => landing

/student/profile
/student/signup
/student/wallet
/student/myfunders
/student/transactions

/funder/signup
/funder/home

how to not die:

truffle develop

> compile 
> migrate --reset 
> Accounts.deployed().then(function(instance){return instance.incrementStudent("hello world");}).then(console.log);
> Accounts.deployed().then(function(instance){return instance.getStudentCount();}).then(console.log);

how to test deposit and withdrawal

Make sure account1 and account2 have sufficient funds in MetaMask.

truffle compile

truffle migrate --reset

var accounts;

web3.eth.getAccounts(function(err,res) { accounts = res; });

var account1 = accounts[0]; // first account

var account2 = accounts[1]; // second account, if exists

var account3 = accounts[2];

console.log(account1);

Accounts.deployed().then(function(instance){return instance.addStudent("Martin Shrekli", "Columbia", "Phrma bro", "https://ei.marketwatch.com/Multimedia/2016/06/06/Photos/MG/MW-EO507_shkrel_20160606174055_MG.jpg?uuid=59565cec-2c2f-11e6-9347-0015c588dfa6", {from: account3});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.addLender("Raphael", {from: account1});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.addLender("Talal", {from: account2});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.startFundraising(2000, {from: account3});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getLenderBalanceIdx(0, {from: account1});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getLenderBalanceIdx(1, {from: account2});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getStudentRaisedIdx(0, {from: account3});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.fund(0, {from: account1, value: 1000, gas:900000});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.fund(0, {from: account2, value: 1000, gas:900000});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getNumStudentFundersIdx(0);}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getStudentRaisedIdx(0, {from: account2});}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getContractBalance()}).then(console.log);

Accounts.deployed().then(function(instance){return instance.withdraw(250, {from: account3});}).then(console.log);

//Amount left in student's contract after withdrawl
Accounts.deployed().then(function(instance){return instance.getStudentRaisedIdx(0, {from: account2});}).then(console.log);

//Amount in student's bank account after withdrawl
web3.fromWei(web3.eth.getBalance(account3));

Accounts.deployed().then(function(instance){return instance.addStudent("Martin Shrekli", "Columbia", "Phrma bro", "https://ei.marketwatch.com/Multimedia/2016/06/06/Photos/MG/MW-EO507_shkrel_20160606174055_MG.jpg?uuid=59565cec-2c2f-11e6-9347-0015c588dfa6");}).then(console.log);

Accounts.deployed().then(function(instance){return instance.getStudentPhotoURL(0);}).then(console.log);

function getStudentPhotoURL(uint idx) public view returns(string) { return slist[idx].photourl; }