Cartesi DApp Front-end Template

This project serves as a template for developing decentralized applications (DApps) using the Cartesi framework. It is designed to integrate seamlessly with Cartesi's off-chain computations while providing a user-friendly interface for interacting with the blockchain.

Features

• Onboard Integration: Utilizes Onboard.js for streamlined wallet connection and management, making it easy for users to log in with MetaMask and other popular wallets.
• Ethers.js Integration: Leverages Ethers.js for interacting with Ethereum contracts, enabling a wide range of blockchain operations directly from the frontend.
• Generic DApp Interaction: The homepage is built to work with any Cartesi DApp, offering generic input functionality alongside pre-implemented deposit mechanisms for assets such as Ether, ERC20 tokens, and ERC721 tokens.
• Voucher Execution: Supports the execution of vouchers, further integrating the DApp with Cartesi's off-chain computations.
• Asset Management: An assets page equipped with features for transferring and withdrawing assets, compatible with examples from npm cartesi-wallet and the Python package cartesi-wallet. These can be explored in the repositories:
  • Node.js: cartesi-asset-examples
  • Python: python-wallet
• Sunodo Integration: Default addresses are set for Sunodo, simplifying the setup for developers:
  • DApp Address: 0x70ac08179605AF2D9e75782b8DEcDD3c22aA4D0C
  • DApp Relay Address: 0xF5DE34d6BbC0446E2a45719E718efEbaaE179daE
  • Input Address: 0x59b22D57D4f067708AB0c00552767405926dc768
  • Ether Portal Address: 0xFfdbe43d4c855BF7e0f105c400A50857f53AB044
  • ERC20 Portal Address: 0x9C21AEb2093C32DDbC53eEF24B873BDCd1aDa1DB
  • ERC721 Portal Address: 0x237F8DD094C0e47f4236f12b4Fa01d6Dae89fb87
  • Sunodo Token Address: 0xae7f61eCf06C65405560166b259C54031428A9C4

Configuration

To customize blockchain interactions, modify the configuration in src/app/service/ethereum.service.ts. This includes changing wallet addresses and adjusting contract interactions as needed for your DApp.

Inspect and GraphQL Calls

• Inspect Calls: For blockchain inspect calls, check src/app/service/http.service.ts, which uses Axios for HTTP GET requests. The default URL is set for Sunodo: http://localhost:8080/inspect/.
• GraphQL Calls: Located in src/app/service/graphql.service.ts, this service provides predefined GraphQL queries using URQL, such as fetching reports, notices, vouchers, and executing specific vouchers. Voucher execution logic is handled in ethereum.service.

Getting Started

To run the application:

1. Install dependencies with npm install.
2. Start the Angular development server with ng serve if you have angular-cli installed. Otherwise run it with npm start.
3. Open http://localhost:4200/ in your browser to view the DApp.

Contribution

Feel free to contribute to the repository by submitting pull requests or creating issues for bugs and feature requests.

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Angular info

This project was generated with Angular CLI version 17.2.1.

Development server

Run ng serve for a dev server. Navigate to http://localhost:4200/. The application will automatically reload if you change any of the source files.

Code scaffolding

Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory.

Running unit tests

Run ng test to execute the unit tests via Karma.

Running end-to-end tests

Run ng e2e to execute the end-to-end tests via a platform of your choice. To use this command, you need to first add a package that implements end-to-end testing capabilities.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI Overview and Command Reference page.