# Fluence JS SDK

[![npm](https://img.shields.io/npm/v/@fluencelabs/fluence)](https://www.npmjs.com/package/@fluencelabs/fluence)

Official SDK for building web-based applications for Fluence

## About Fluence

Fluence is an open application platform where apps can build on each other, share data and users

|         Layer         |                                                               Tech                                                                |              Scale               |               State               |                                                   Based on                                                    |
| :-------------------: | :-------------------------------------------------------------------------------------------------------------------------------: | :------------------------------: | :-------------------------------: | :-----------------------------------------------------------------------------------------------------------: |
|       Execution       |                                             [FCE](https://github.com/fluencelabs/fce)                                             |           Single peer            | Disk, network, external processes | Wasm, [IT](https://github.com/fluencelabs/interface-types), [Wasmer\*](https://github.com/fluencelabs/wasmer) |
|      Composition      |                                      [Aquamarine](https://github.com/fluencelabs/aquamarine)                                      |          Involved peers          |      Results and signatures       |                                                 ⇅, π-calculus                                                 |
|       Topology        | [TrustGraph](https://github.com/fluencelabs/fluence/tree/master/trust-graph), [DHT\*](https://github.com/fluencelabs/rust-libp2p) | Distributed with Kademlia\* algo |    Actual state of the network    |                                [libp2p](https://github.com/libp2p/rust-libp2p)                                |
| Security & Accounting |                                                            Blockchain                                                             |          Whole network           |        Licenses & payments        |                                                  substrate?                                                   |

<img alt="aquamarine scheme" align="center" src="doc/stack.png"/>


## Installation

With npm

```bash
npm install @fluencelabs/fluence
```

With yarn

```bash
yarn add @fluencelabs/fluence
```

## Getting started

Pick a node to connect to the Fluence network. The easiest way to do so is by using [fluence-network-environment](https://github.com/fluencelabs/fluence-network-environment) package

```typescript
import { dev } from '@fluencelabs/fluence-network-environment';

export const relayNode = dev[0];
```

Initialize client


```typescript
import { createClient, FluenceClient } from '@fluencelabs/fluence';

const client = await createClient(relayNode);
```

Add response service function calls

```typescript
subscribeToEvent(client, 'helloService', 'helloFunction', (args) => {
    const [networkInfo] = args;
    console.log(networkInfo);
});
```

Make a particle

```typescript
const particle = new Particle(`
    (seq
        (call myRelay ("op" "identify") [] result)
        (call %init_peer_id% ("helloService" "helloFunction") [result])
    )`,
    {
        myRelay: client.relayPeerId,
    },
);
```

Send it to the network

```typescript
await sendParticle(client, particle);
```

Observe the result in browser console

```json
{
    "external_addresses": [ "/ip4/1.2.3.4/tcp/7777", "/dns4/dev.fluence.dev/tcp/19002" ]
}
```

## Documentation

SDK Reference: [readme.io](https://fluence-labs.readme.io/docs/js-sdk)

Detailed guide on building applications:  [readme.io](https://fluence-labs.readme.io/docs/build-an-app)

Sample applications:

* [FluentPad](https://github.com/fluencelabs/fluent-pad): a collaborative text editor with users online status synchronization
* [Other demos](https://github.com/fluencelabs/aqua-demo): (Chat app,  Social feed app, Blog platform app)

About [Fluence](https://fluence.network/) 

## Developing

### Setting up Dev

Install node packages

```bash
npm install
```

### Running tests

To run test execute

```bash
npm test
```

## Contributing

While the project is a still in the early stage of development, you are welcome to track progress and contribute. At the current moment we don't have detailed instructions on how to join development or which code guidelines to follow. However, you can expect more info to appear soon enough. In the meanwhile, check out the [basic contributing rules](CONTRIBUTING.md).

## License

[Apache 2.0](LICENSE)