Crypto Colours

Setup

Install the dependencies for the app.

yarn install

Then install truffle globally:

npm i -g truffle

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Ganache

Use the Muir Glacier Hard Fork in Ganache as it was the hard fork version used when developing this app.

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Running the app

Navigate to the blockchain folder and do the following running the app:

truffle compile --all
truffle migrate --network development

Then navigate back to the root of the project and run:

yarn dev

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Contracts

Navigate to the blockchain folder:

# Compile contracts
truffle compile --all

# To migrate contracts
truffle migrate --reset --network development

# Connect to localhost running ganache via console to run commands on smart contracts
truffle console --network development

# To run tests on the smart contracts
truffle test

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Commands for Truffle console

# Fetching all accounts
accounts = await web3.eth.getAccounts()

# Grabs a deployed contract
hexColour = await HexColour.deployed()
nftMarketPlace = await NFTMarketPlace.deployed()

# Get a reference to the contracts via their address
hexColour = await HexColour.at("<address>");
nftMarketPlace = await NFTMarketPlace.at("<address>");

# Useful util commands to use within the truffle console
web3.utils.toWei("0.025", "ether")
web3.utils.fromWei("25000000000000000", "ether")

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MetaMask

To connect your wallet to MetaMask, copy the private key from one of your ganache wallet addresses and then import it into MetaMask. Make sure to switch to the Ganache network to see the Ether in your account's wallet.

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Local Development

Add localhost as the value of development.host in the networks config in the truffle-config.js file to work with Ganache GUI locally.

Using Docker:

If using Docker on Windows, add host.docker.internal as the value of development.host in the networks config within truffle-config.js. This will allow you to connect from within Docker to the Windows host running Ganache.

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Deploying to Testnets

Create a secrets.json file and enter the following properties:

{
  // this should be your metamask account's seed phrase
  "mnemonic": "",
  // the rpc url of the polygon mumbai testnet
  "polygonTestnetRpcUrl": "",
  // obtain the deployer address from metamask
  "deployerAccountAddress": ""
}

Now you can deploy the smart contracts to your network of choice. In this example we are using the polygon mumbai testnet:

truffle migrate --network polygonMumbai

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