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https://github.com/wellguimaraes/actionware

Redux with less boilerplate, actions statuses and controlled side-effects in a single shot.
https://github.com/wellguimaraes/actionware

actions async-actions boilerplate react-redux redux

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Redux with less boilerplate, actions statuses and controlled side-effects in a single shot.

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README 

        
# ![Actionware](assets/logo.png)



[![Build Status](https://travis-ci.org/wellguimaraes/actionware.svg?branch=master)](https://travis-ci.org/wellguimaraes/actionware)



[Redux](http://redux.js.org/) with less boilerplate, actions statuses and controlled side-effects in a single shot. 



- no more **action creators** and **action types**, just **actions¹** and **reducers**

- **actions** dispatch their result automatically

- **error status** for every action with no extra code

- **busy status** for every async action (yep, no extra code!)

- **cancellable** actions



**¹** With Actionware, **actions** have a different meaning: they're just functions which execution generate events. 

See [usage](#usage) section to better understand.



###### Extra power

Wanna have state selectors/getters in a decent way? Use it combined with **[Stateware](https://github.com/wellguimaraes/stateware)** lib.



## Setup



#### Install it

- Yarn: `yarn add actionware`

- NPM: `npm i actionware --save`



#### After creating your Redux store, let Actionware know your store instance. Optionally you

can define custom action types prefix and suffixes:

```js

import * as actionware from 'actionware';



actionware.setup({

  store,

  defaultPrefix, // default: 'actionware:'

  errorSuffix,   // default: ':error'

  cancelSuffix,  // default: ':cancel'

  busySuffix     // default: ':busy'

});

```



#### Add actionware reducer to your root reducer:

To make Redux store react to **busy** and **error** status changes, 

make sure you add the Actionware reducer into your root reducer. 

```js

import { combineReducers } from 'redux';

import { actionwareReducer } from 'actionware';



const rootReducer = combineReducers({ 

  actionware: actionwareReducer,

  // your reducers

});

```



## Usage



#### Simple actions

```js

export function incrementCounter() { }

```



#### Async actions

Whatever you return will be the action payload 



```js

// Note that the store is always the last arg

export async function loadUsers(arg1, arg2, argN, store) {

  const response = await fetch('/my/api/users');

  return response.json();

}

```



#### Invoke any action 

Use `call` to invoke an action and let Actionware handle

the execution lifecycle (managing error and busy statuses, notifying listeners, etc).

```js

import { call } from 'actionware';



call(loadUsers, arg1, arg2, argN);

```



#### Cancel an action execution

```js

import { call } from 'actionware';



const actionCall = call(loadUsers, arg1, arg2, argN);



actionCall.cancel()

```



To cancel inner calls or other async executions, use `setExtra` inside an async action 

to keep information needed and use them on a cancellation listener:

```js

import { call, onCancel} from 'actionware';

import api from './path/to/api';



// Don't use arrow functions here, 

// otherwise a context value can't be set

export async function someAction() {

  const apiCall = api.get('/some/endpoint')

  const anotherActionCall = call(anotherAction, 'someParam')

  

  this.setExtra({ apiCall })

  this.setExtra({ anotherActionCall }) // you can call it multiple times

    

  const apiResponse = await apiCall

  const anotherResponse = await anotherActionCall

  

  // ...

  

  return apiResponse.data

}



export async function anotherAction() {

  // ...

}



onCancel(someAction, ({ extras }) => {

  // Check if the action execution is still cancellable

  if (extras.anotherActionCall.canBeCancelled)

    extras.anotherActionCall.cancel()

    

  // Cancel the api call...

})

```



#### Clear action error

```js

import { clearError } from 'actionware'



export async function someAction() {

  // ...

}



clearError(someAction)

```



#### Reducers:

```js

import { createReducer } from 'actionware';

import { loadUsers, persistUser, incrementCounter } from 'path/to/actions';



const initialState = { users: [], count: 0 };



export default createReducer(initialState)

  .on(loadUsers, 

    (state, users) => ({ ...state, users }))

  

  .on(incrementCounter, 

    (state) => ({ ...state, counter: state.counter + 1 }))

  

  // Bind legacy action types

  .on('OLD_ACTION_TYPE',

    (state, payload) => { /* return new state */ })

  

  // Bind multiple actions to the same handler    

  .on(

    someAction, 

    anotherAction,

    (state, payload) => { /* return new state */ })

  

  // Actionware handles errors, cancellation and 'before' events,

  // but if you need to do something else

  

  .onError(persistUser, 

    (state, error, ...args) => { /* return new state */ })

    

  .onCancel(loadUsers, 

    (state, extras, ...args) => { /* return new state */ })

  

  .before(loadUsers, 

    (state, ...args) => { /* return new state */ });

```



#### Busy and failure statuses for all your actions:

```js

import { getError, isBusy } from 'actionware';

import { loadUsers } from 'path/to/userActions';



// Whenever needed...

isBusy(loadUsers);

getError(loadUsers);

```



#### Use listeners to manage side effects:

Note that busy listeners are called when busy status changes. 

```js

import { onSuccess, onError, onCancel, before, beforeAll } from 'actionware';

import { createUser } from 'path/to/actions';



// global success listener

onSuccess(({ action, args, payload, store }) => eventTracker.register(action.name));



// per action success listener

onSuccess(createUser, ({ args, payload, store }) => history.push(`/users/${user.id}`));



// error listeners

onError(({ action, args, error }) => { /* ... */ });

onError(createUser, ({ args, error }) => { /* ... */ });



// cancellation listeners

onCancel(({ action, args, extras }) => { /* ... */ });

onCancel(createUser, ({ args, extras }) => { /* ... */ });



// before listeners 

// NOTE: 'beforeAll' is just an alias for 'before'

beforeAll(({ action, args, store}) => { /* ... */ });

before(createUser, ({ args, store }) => { /* ... */ });

```



#### Interaction-dependent flows

When you have "complex" flows that depend on some interaction to start or continue,

you can use `next` to wait for some action completion in this fashion:

```js

import { call, next } from 'actionware';

import { login, showTip, acknowledgeTip } from 'path/to/actions';



export async function appEducationFlow() {

  // Wait for the next successful login

  await next(login); 

  

  call(showTip, 'headerButtons');

  await next(acknowledgeTip);

  

  history.redirect('/some/route');

  

  call(showTip, 'sideMenu');

  await next(acknowledgeTip);

}



// At some point, start the flow

appEducationFlow();

```



## Usage with React

 

#### Inject actions and status into components as props

By using `withActions` to wrap a component, actions are injected into it as props 

and can be invoked without using `call`. 

```js

import * as React from 'react';

import { connect } from 'react-redux';

import { withActions, isBusy, getError } from 'actionware';

import { loadUsers } from 'path/to/actions';



const actions = { loadUsers };



const mapStateToProps = ({ company }) => ({

  users   : company.users,

  loading : isBusy(loadUsers),

  error   : getError(loadUsers)

});



@connect(mapStateToProps)

@withActions(actions)

class MyConnectedComponent extends Component {

  componentDidMount() {

    this.props.loadUsers();    

  }

  

  render() {

    const { loading, error } = this.props;

    

    if (loading) return (
Loading...
);

    if (error) return (
Failed to load users...
);

    

    return (

      


        { users.map(it => ) }

      


    );

  }

}



export default MyConnectedComponent

```



#### Without injecting actions as props

In case you prefer not injecting actions as props into your component, you can use `createActions` this way:

```js

import { createActions } from 'actionware'



const actions = createActions('optionalPrefix:', {

  someAction,

  anotherAction

})



const MyComponent = () => (

  


    

  


)



```



## Testing



#### Mock `call` and `next` functions

While testing, you're able to replace the `call` and `next` functions by custom 

spy/stub to simplify tests.

```js

import { mockCallWith, mockNextWith } from 'actionware';



const callSpy = sinon.spy();

const nextStub = sinon.stub().returns(Promise.resolve());



mockCallWith(callSpy);

mockNextWith(nextStub);



// Get back to default behavior

mockCallWith(null); 

mockNextWith(null); 

```



#### Reducers

For testing reducers, you can do the following:



```js

import { successType } from 'actionware';

import { loadUsers } from 'path/to/userActions';

import usersReducer from 'path/to/usersReducer';



describe('usersReducer', () => {

  describe('on loadUsers', () => {

    it('should replace the "users" array with the loaded users', () => {

      const currentState = { users: [ ] }; 

      const loadedUsers = [ 'John Doe', 'Joane Doe', 'Steve Gates' ];



      // Call reducer with currentState and a regular Redux action       

      const newState = usersReducer(

        currentState, 

        { type: successType(loadUsers), payload: loadedUsers }

      );

      

      expect(newState.items).to.equals(loadedUsers);

    });  

  });

});

```



## API



#### Setup  

- **setup**({ store, defaultPrefix?, errorSuffix?, busySuffix?, cancelSuffix? }): void



#### Most used

- **withActions**(actions: object): Function(wrappedComponent: Component)

- **createActions**(actions: object): object

- **isBusy**(action: Function): bool

- **getError**(action: Function): object

- **clearError**(action: Function): void

- **call**(action: Function, ...args)

- **next**(action: Function)

- **createReducer**(initialState: object, handlers: []): Function



#### Listeners



###### Global

- **onSuccess**(listener: ({ action, payload, args, store }) => void)

- **onError**(listener: ({ action, error, args, store }) => void)

- **beforeAll**(listener: ({ action, args, store}) => void)



###### Per action

- **onSuccess**(action: Function, listener: ({ payload, args, store }) => void)

- **onError**(action: Function, listener: ({ error, args, store }) => void)

- **before**(action: Function, listener: ({ args, store }) => void)



#### Test helpers

- **mockCallWith**(fakeCall: Function)

- **mockNextWith**(fakeNext: Function)

- **successType**(action: Function)

- **errorType**(action: Function)

- **busyType**(action: Function)



## License

[MIT](LICENSE) © Wellington Guimaraes