oluwaseye / nd1309-p2-decentralized-star-notary-service-starter-code-main

ND1309 C2 Ethereum Smart Contracts, Tokens and Dapps - Project Starter

PROJECT: Decentralized Star Notary Service Project - For this project, you will create a DApp by adding functionality with your smart contract and deploy it on the public testnet.

ERC-721 Token Name: Liquid Star

ERC-721 Token Symbol: LQST

ToDo

This Starter Code has already implemented the functionalities you implemented in the StarNotary (Version 2) exercise, and have comments in all the files you need to implement your tasks.

Dependencies

* Solidity v0.5.6

* Truffle v5.3.2

* OpenZeppelin v2.8

For this project, you will need to have:

1. Node and NPM installed - NPM is distributed with Node.js

# Check Node version

node -v

# Check NPM version

npm -v

2. Truffle v5.3.2 - A development framework for Ethereum.

# Unsinstall any previous version

npm uninstall -g truffle

# Install

npm install -g truffle

# Specify a particular version

npm install -g [email protected]

# Verify the version

truffle version

2. Metamask: 5.3.1 - If you need to update Metamask just delete your Metamask extension and install it again.

3. Ganache - Make sure that your Ganache and Truffle configuration file have the same port.

4. Other mandatory packages:

cd app

# install packages

npm install --save [email protected]

npm install --save [email protected]

npm install webpack-dev-server -g

npm install web3

Run the application

1. Clean the frontend

cd app

# Remove the node_modules

# remove packages

rm -rf node_modules

# clean cache

npm cache clean

rm package-lock.json

# initialize npm (you can accept defaults)

npm init

# install all modules listed as dependencies in package.json

npm install

2. Start Truffle by running

# For starting the development console

truffle develop

# truffle console



# For compiling the contract, inside the development console, run:

compile



# For migrating the contract to the locally running Ethereum network, inside the development console

migrate --reset



# For running unit tests the contract, inside the development console, run:

test

3. Frontend - Once you are ready to start your frontend, run the following from the app folder:

cd app

npm run dev

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Important

When you will add a new Rinkeyby Test Network in your Metamask client, you will have to provide:

| Network Name | New RPC URL | Chain ID |

|---|---|---|

|Private Network 1|http://127.0.0.1:9545/|1337 |

The chain ID above can be fetched by:

cd app

node index.js

Troubleshoot

Error 1

'webpack-dev-server' is not recognized as an internal or external command

Solution:

• Delete the node_modules folder, the one within the /app folder

• Execute npm install command from the /app folder

After a long install, everything will work just fine!

Error 2

ParserError: Source file requires different compiler version.

Error: Truffle is currently using solc 0.5.16, but one or more of your contracts specify "pragma solidity >=0.X.X <0.X.X".

Solution: In such a case, ensure the following in truffle-config.js:

// Configure your compilers

compilers: {

solc: {

version:  "0.5.16",  // <- Use this

// docker: true,

// ...

Raise a PR or report an Issue

1. Feel free to raise a Pull Request if you find a bug/scope of improvement in the current repository.

2. If you have suggestions or facing issues, you can log in issue.

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Do not use the Old depreacted zipped starter code