# Write Your First Token

This guide will walk you through the process of creating and deploying your first token on the Pharos blockchain. By the end of this guide, you will have a fully functional token contract and understand how to interact with it.

### Prerequisites

Before you begin, ensure you have the following:

* Git: Used for code management and obtain examples.
* Node.js: Install it from [nodejs.org](https://nodejs.org/).
* Pharos Devnet/Testnet Access: Access to a Pharos node (local or remote) for interacting with the blockchain.

### Setup 1: Install Foundry

* [Foundry](https://book.getfoundry.sh/getting-started/installation)

### Setup 2: Set Up the Project

Clone the example repo:

```shell
git clone https://github.com/PharosNetwork/examples
cd examples/token/foundry/contract
```

Install OpenZeppelin Contracts:

* Foundry uses forge to manage dependencies. Install OpenZeppelin contracts:

```shell
forge install OpenZeppelin/openzeppelin-contracts --no-git
```

### Setup 3: Write the Token Contract

Create a New Solidity File:

* Create a new file for your token contract:

```shell
touch src/Token.sol
```

Write the Token Contract:

* Open `src/Token.sol` in your favorite text editor and add the following code:

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";

contract Token is ERC20 {
    constructor(uint256 initialSupply) ERC20("Token", "MTK") {
        _mint(msg.sender, initialSupply);
    }
}
```

Compile the Smart Contract:

* Use forge to compile the contract:

```sh
forge build
```

Test the Smart Contract

* Use forge to test the contract:

```shell
forge test
```

### Step 4: Deploy the Token Contract

Create a Deployment Script:

* Create a new file for the deployment script:

```shell
touch script/DeployToken.s.sol
```

Write the Deployment Script:

* Open script/DeployToken.s.sol and add the following code:

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "forge-std/Script.sol";
import "../src/Token.sol";

contract DeployToken is Script {
    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        vm.startBroadcast(deployerPrivateKey);

        Token token = new Token(1000000); // Initial supply of 1,000,000 tokens

        vm.stopBroadcast();
    }
}
```

Set the private key:

```shell
export PRIVATE_KEY=<your private key>
```

Deploy the Contract:

* Use forge to deploy the contract to the Pharos Testnet:

```shell
forge script script/DeployToken.s.sol --rpc-url <PHAROS_RPC_URL> --broadcast
```

### Step 5: Verify the Token Contract

* For Atlantic Testnet

```shell
forge verify-contract \
<contract_address> \
--constructor-args <abi_encoded_args> \
src/Token.sol:Token \
--chain-id 688688 \
--verifier blockscout \
--verifier-url https://api.socialscan.io/pharos-atlantic-testnet/v1/explorer/command_api/contract
```

* For Testnet

```shell
forge verify-contract \
<contract_address> \
--constructor-args <abi_encoded_args> \
src/Token.sol:Token \
--chain-id 688689 \
--verifier blockscout \
--verifier-url https://api.socialscan.io/pharos-atlantic-testnet/v1/explorer/command_api/contract
```

> Note: Replace with your token contract address

### Step 6: Interact with the Token Contract

Open `script/InteractToken.s.sol` and add the following code:

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {Script, console} from "forge-std/Script.sol";
import {Token} from "../src/Token.sol";

contract InteractToken is Script {
    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        vm.startBroadcast(deployerPrivateKey);

        Token token = Token(address(0x00)); // Replace with your token contract address

        // Check balance
        uint256 balance = token.balanceOf(msg.sender);
        console.log("Balance:", balance);

        // Transfer tokens
        token.transfer(address(0x00), 100); // Replace with recipient address and amount
        console.log("Tokens transferred");

        vm.stopBroadcast();
    }
}
```

Execute the script using forge:

```shell
forge script script/InteractToken.s.sol --rpc-url <PHAROS_RPC_URL> --broadcast
```

### Troubleshooting

* **Contract Deployment Fails**: Ensure you have enough testnet tokens to cover the deployment cost.
* **Interaction Issues**: Verify that the contract address and ABI are correct.
* **Insufficient Balance**: Ensure your wallet has enough tokens to transfer.

### Next Steps

Now that you’ve created and deployed your first token using Foundry.

This guide provides a comprehensive introduction to creating and deploying a token on the Pharos blockchain using Foundry. If you encounter any issues, refer to the Troubleshooting section or consult the Foundry documentation. Happy building! 🚀


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