Getting Started with edeXa (Developer Guide)

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Getting Started with edeXa (Developer Guide)

1. Introduction

Welcome to edeXa! Whether you're building on the Testnet or Mainnet, edeXa offers developers a flexible, fast, and secure blockchain environment for your decentralized applications. Let’s get you started on the right foot.

2. Step-by-Step Guide to Get Started

Step 1: Set Up Your Development Environment

To start developing on edeXa, you'll need a few basic tools:

Install edeXa Wallet (recommended) or MetaMask (or another Ethereum-compatible wallet) to interact with the blockchain.
Set up Remix IDE or your preferred development environment for smart contracts. Open your browser and visit .

Step 2: Connect to edeXa Network

To connect to the edeXa Testnet or Mainnet:

RPC URLs for Testnet & Mainnet:

Use these URLs to configure your wallet or development tools like Truffle or Hardhat for seamless interaction with the network.

Step 3: Access the edeXa Faucet

Get Testnet EDX tokens for testing your contracts or transactions on Testnet:

Get tokens to experiment with smart contract interactions or transactions.

Step 4: Start Building Your Smart Contracts

- Click the File Explorer icon in the left navigation bar of Remix.
- Click the "+" icon to create a new workspace. Name your workspace (e.g., "edeXaWorkspace").
- Create a new .sol smart contract, and name it something easy to remember like MyContract.sol.

Basic Operations: In your new .sol smart contract, import edeXaApp.sol. This will allow your smart contract to inherit from edeXaApp and access its functionality.

For example:

solidityCopyEdit// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

import "@edexa/contracts/edeXaApp.sol";  // Replace with actual edeXa contract path

contract MyContract is edeXaApp {
    // Your contract code
}

Override the _edeXaReceive function in your smart contract. This is a protected function that will be called when your contract receives a cross-chain message. You can customize this function to define how your contract will handle incoming messages.

solidityCopyEditfunction _edeXaReceive(
    bytes calldata data,
    bytes32 messageId,
    uint256 fromChainId,
    address fromSC
) internal override {
    // Custom handling for incoming message
}

Initialize Your Smart Contract: When initializing your smart contract, call the edeXaApp initialize function. This function takes two parameters: the admin and the _edeXaGateway address.
Example:
```
solidityCopyEditconstructor(address admin, address _edeXaGateway) edeXaApp() {
    initialize(admin, _edeXaGateway);
    // Your initialization code
}
```
Sending Cross-Chain Messages: To send messages or contract calls to other chains, you can use the _dispatchMessage function provided by edeXaApp. This function allows you to send messages to any specified chain or contract.
Example:
```
solidityCopyEditfunction sendMessage(
    uint256 toChainId, address toAddress, bytes memory msgData,
    uint256 feeAmount) public payable {
    _dispatchMessage(toChainId, toAddress, msgData, feeAmount);
}
```

Estimate Fees: Use the estimateFee function to calculate the fee required to send a cross-chain message. This function takes two parameters: the target chain ID and the gas limit.

Example:

solidityCopyEditfunction sendMessage(
    uint256 toChainId, address toAddress,
    bytes memory msgData, uint256 gasLimit) public payable {
    uint256 fee = estimateFee(toChainId, gasLimit);
    require(msg.value >= fee, "Insufficient fee");
    _dispatchMessage(toChainId, toAddress, msgData, msg.value);
}

3. Resources

edeXa API Documentation

4. Contact & Support

Submit a Support Request: helpdesk@edexa.com

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