SIMPLE STORAGE PROJECT USING FOUNDRY

Deploy Contracts

Deploy Contracts on Localhost (Anvil)

1. Run foundry local node on a saperate terminal using anvil command.
2. Create a .env file and specify these environment variables inside it.

# anvil
# This is a RPC_URl of local node (Anvil) provided by foundry.
ANVIL_RPC_URL=http://127.0.0.1:8545
# This is a private key of the first account.
ANVIL_PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80

3. Create an alias for the ANVIL_RPC_URL inside the foundry.toml file. This will help us later in the command. Make sure to add [rpc_endpoints] above it.

[rpc_endpoints]
anvil = "${ANVIL_RPC_URL}"

4. Compile the contracts using forge build command (fix any issues you face).
5. Load the .env file variables using the command source .env
6. Deploy the contracts using command;

forge create SimpleStorage --rpc-url anvil --private-key $ANVIL_PRIVATE_KEY

Note: We only have 1 smart contract due to that we only specify the name of it (SimpleStorage) in the command but incase you have multiple contract inside the same file or in different files then you need to specify the full path of smart contract i.e in our case src/SimpleStorage.sol:SimpleStorage

Deploy Contracts on Testnet (Sepolia)

1. Specify the SEPOLIA_RPC_URL, PRIVATE_KEY and ETHERSCAN_API_KEY inside the .env file.

SEPOLIA_RPC_URL=https://eth-sepolia.g.alchemy.com/v2/...
PRIVATE_KEY=...
ETHERSCAN_API_KEY=...

2. Add the alias for the SEPOLIA_RPC_URL below [rpc_endpoints].

[rpc_endpoints]
sepolia = "${SEPOLIA_RPC_URL}"

3. In order to verify the smart contract on etherscan you will need to add etherscan api key inside .env file and add this configuration inside foundry.toml file so the command can detect the network automatically.

[etherscan]
sepolia = {key = "${ETHERSCAN_API_KEY}"}

You can read more about configurations here https://github.com/foundry-rs/foundry/tree/master/config

4. Deploy the contract using command;

forge create SimpleStorage --rpc-url sepolia --private-key $PRIVATE_KEY --verify