Agent Dart

An agent library built for Internet Computer for Dart and Flutter apps.

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📃 Table of content

• Agent Dart
  • 📃 Table of content
  • ⚡️ Quick start
    • For Dart/Flutter app
      • For iOS projects
    • For developing the plugin
  • 🚦 Prerequisites
  • 🧰 Resources
    • 📖 Documentation
    • 🔧 Helpers/Tooling
    • 💡 Examples
  • 🧘‍♂️ Motivation
  • 🏆 Milestones
  • 👨‍💻 Contributing
  • 🔗 Reference and related projects
  • ⚠️ FAQ
    • Build rust libraries for iOS/MacOS
    • Network problem in macOS

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⚡️ Quick start

For Dart/Flutter app

The latest stable version is:

dependencies:
  agent_dart: ^latest-version

For iOS projects

When you're using the plugin in your Flutter projects that contains iOS platform, make sure you've done the following setup the build settings.

1. Open ios/Runner.xcworkspace.
2. Select Runner on left folder view, and Project -> Runner.
3. Select Build Settings, All, Combined and type strip style in the filter input field.
4. Switch Strip Style and select Non-Global Symbols.

For developing the plugin

1. Clone and follow Prerequisites, and make sure your Flutter installed properly.

2. MUST DO: Bootstrap your project

./scripts/bootstrap.sh

🚦 Prerequisites

• CMake v3.2+
• Xcode v13+
• Rust v1.64+
• Node.js v16+

🧰 Resources

📖 Documentation

• Reference on pub.dev
• Docs site, WIP...

🔧 Helpers/Tooling

• candid_dart, an automated candid builder for Dart classes
• agent_dart_auth, an extension plugin for authorization, used for Internet-Identity authorization.

💡 Examples

• simple counter, a simple counter demonstrate how to use agent_dart, a backend canister within.
• auth counter, a counter needs user's authorization from Internet-Identity, demonstrate how to combine with agent_dart_auth.
• ledger_app, a ledger app demonstrate how to import seed-phrase and make transactions.

🧘‍♂️ Motivation

The Internet Computer is powered by blockchain and its major impact is to bring WebApp to be truly decentralized. However, we are in the mobile internet era, even we can use Safari or Chrome on our cell phones. But most average people, not crypto enthusiasts, are likely to use native mobile apps, major users are there.

It's important to attract these people to use DApps of Internet Computer, by providing stable, fast, and fully integrated to Dfinity's blockchain. We likely to provide further solution to balancing the "Decentralization" and "Efficiency". But first things first, we have to make mobile native apps work.

agent-rs and agent-js are the actual lower level client-SDKs, just like ether.js or web3.js of Ethereum's ecosystem. This library is aiming to port and replicate features from them. And this library is mainly for mobile apps to connect canisters, not deploying contracts (you can do that if you want, but use dart directly).

We have tried our best to migrate most interface styles just like Javascript version, but there are limitations and differences between different programming languages, we will document them as much as possible.

🏆 Milestones

• Milestone 1: ✅ Core features/libraries implementation.
• Milestone 2: ✅ Enhanced built tool and more example apps
• Milestone 3: 👷 Documentation and community driven development

👨‍💻 Contributing

By contributing to agent_dart, you agree that your contributions will be licensed under its MIT License.

1. Fork this library and add your own branch like {feat|fix|test|dep}-{detail}.

2. Follow the Prerequisites.

3. Build rust dependencies for all supported platforms:

sh ./scripts/bootstrap

4. Start the example.

cd example
flutter run

5. Tests. (Unit Test and Integration Test)

flutter test

6. Commit and make a pull request.

🔗 Reference and related projects

Feel free to list your project here, you can submit here.

• Official libraries from Dfinity's team:
  • agent-rs
  • agent-js
• DApps
  • Distrikt
  • ICPBox
• Wallets
  • ICWallet

⚠️ FAQ

Build rust libraries for iOS/MacOS

• All rust method have to be written inside SwiftAgentDartPlugin.swift to avoid tree shaking by XCode.

Network problem in macOS

• If you run example or build a flutter app, you may come up with this:

[macOS] SocketException: Connection failed (OS Error: Operation not permitted, errno = 1)

• Go to macos/Runner of macOS.
• Add following in DebugProfile.entitlements and ReleaseProfile.entitlements:

<key>com.apple.security.network.client</key>
<true/>