Command Line Tool for Managing Flutter Projects

Wholesome is a Command Line Tool that aims to facilitate code generation for Flutter projects, proposing a default architecture based on BLoC pattern.

Requeriments

This tool is executed using pub and generate code for Flutter projects this means that you will need:

• Dart SDK
• Flutter

Installation

Wholesome-cli now is a (pub.dev package)[https://pub.dev/packages/wholesome_cli/versions/1.0.0] and you can install the stable version from pub, or installit from this repo if you want the latest dev version.

Pub

pub global activate wholesome_cli

Git Online

You can install the tool from this repo link by running the following line:

pub global activate --source git https://github.com/clawstudios/wholesome-cli.git

Git Local

If you cloned the repository, you can install the tool with the following line replacing <path> with the path where the repo is located on your computer.

pub global activate --source path <path>

Add the executable folder to $PATH

To execute Wholesome from your command line, you need to add the pub cache folder to the PATH. Check out the Running Script section in the pub-global Dart documentation to add the path correctly for your system.

Before Starting

This tool is based on the following folder structure. You can read more about each folder in the section of each subcommand of the generator.

/ myproject
  |- .idea
  |- android
  |- assets
  |- ios
  |- lib
    |- common
    |- components
        |- mycomponent
            |- mycomponent.bloc.dart
            |- mycomponent.events.dart
            |- mycomponent.state.dart
            |- mycomponent.view.dart
    |- guards
    |- models
    |- pages
        |- mypage
            |- mypage.bloc.dart
            |- mypage.events.dart
            |- mypage.state.dart
            |- mypage.view.dart
    |- services
  |- test

Commands

Every Wholesome command needs to be executed by the wsm binary. At the moment, it supports the following commands and subcommands:

• new
• generate
  • component
  • guard
  • model
  • page
  • service

New

The new command generates a new Flutter project with the provided name, the previously detailed folder folder structure, and some boilerplate code.

wsm new myproject

This command will run ‘flutter new’ and then will generate the structure and files.

This command also generates the following files inside the common folder:

• assets.dart
• colors.dart
• helpers.dart
• routes.dart
• styles.dart

Assets, Colors and Styles

These are files for storing constants with asset paths, custom colors, or custom styles that you need to reuse on every part of the app.

You can import the files in the following way:

import  'package:myproject/common/assets.dart'  as ASSETS;
import  'package:myproject/common/colors.dart'  as COLORS;
import  'package:myproject/common/styles.dart'  as STYLES;

Helpers

This is a file created to put all the helper functions that you will use to develop your app.

You need to import it like this:

import  'package:myproject/common/helpers.dart'  as HELPERS;

And you will find two methods for printing to console.

HELPERS.printError('This is an error message.');
HELPERS.printWarn('This is a warning message.');

Routes

In this file, you will find a ROUTES Map in where you can add routes and associate them with the generated Page constructor.

For more information about routing, please check Flutter Routing Docs.

Generate

This command generates boilerplate code, it receives one subcommand as a parameter and you must execute this command under a Flutter Project

wsm generate <subcommand>

Component

A component is a reusable implementation of code that could have one or more files.

Stateful Component

For components that need state management, Wholesome generates a set of files inside a folder named the same as the component (as you can see in the Before Starting section, inside the ‘components’ folder)

wsm generate component <name>

Generated Files:

name.bloc.dart This file contains all the Business Logic and also is intended to manage the State of the component through events.

name.events.dart Contains an abstract class ready to be extended by custom events used to comunicate between BLoC and View.

name.state.dart Contains a class with the State data of the component and only can be modified by the BLoC.

name.view.dart: Is a StatefulWidget with a BLoC instance in it and a dispose implementation that includes the _bloc.dispose() call that is needed to shutdown the BLoC controllers when disposing the view.

Stateless Component

For components without state management, Wholesome will generate only a StatelessWidget that will be used as a view.

wsm generate component <name> -s
# or
wsm generate component <name> -stateless

Guard

Guard functionality is to manage the access to one or more views, that’s why you will find a default canActivate method that returns a boolean ready to be used from a Page. Guards can be extended as needed. These files are created under the ‘guards’ folder as shown in the Before Starting section.

wsm generate guard <name>

Usage

Guards are implemented as mixins, you can use it on a generated page adding the ‘with’ keyword to the state class. More info about mixins here

...
class _HomePageState extends State<HomePage> with ExampleGuard {

  HomePageBloc _bloc = HomePageBloc();

  @override
  void initState() {
      if (!this.canActivate(context)) {
          // Get out of here
      }
  }
...

Model

Models are classes that represent different data models handled inside an app such as user data to show in a profile view. Models are located inside the ‘models’ folder. (check the previously detailed folder structure).

wsm generate model <name>

Page

Pages are StatefulWidgets with the same structure as components, but they can be accessed navigating to their specific route that is also generated by this subcommand. In pages is where you will instantiate components and trigger events to the BLoC for handling state and model mutations.

Pages are located inside ‘pages’ folder. (check the previously detailed folder folder structure).

wsm generate page <name>

See the (Routes)[https://github.com/clawstudios/wholesome-cli/blob/master/README.md#routes] section if youe need to add a route manually.

Service

Services are singletons that expose methods to interact with external resources such as APIs or databases.

Services are located inside the ‘services’ folder. (check the previously detailed folder folder structure).

wsm generate service <name>

Credits

This tool is a development in progress by Claw Studios and is under BSD License.

If you want to help, contribute or report a bug please use the following channels

• Slack
• Discord
• info@clawstudios.com

Download Details:

Author: clawstudios

Source Code: https://github.com/clawstudios/wholesome-cli

#flutter #dart #mobile-apps