Hygiene

Hygiene is an app built in univeral expo app that supports ios, android and web. Hygiene aims to lead people the right behaviors to fight such virus when we are in trouble like today. This is a concept application to provide ideas for all organizations.

Introduction

Hygiene was built to contribute my skill to be somewhat helpful to Covid-19 pandemic. However, Apple rejected my contribution so this app won't appear in iOS.

Universl app

• App

  

• Web

  https://hygiene.dooboolab.com

Community

• Medium
• Twitter

Project spectification

• react-native
• expo
• react-navigation
• typescript
• expo-localizatian
• styled-components
• ts-jest
• @testing-library/react-native
• @testing-library/react-hooks
• react-hook
• prettier

INSTALL

npm install && npm start
// or
yarn && yarn start

Structures

app/
├─ .doobooo // necessary if using dooboo-cli
├─ .expo
├─ assets
│  └─ icons // app icons
│  └─ images // app images like background images
├─ node_modules/
├─ src/
│  └─ apis
│  └─ components
│     └─ navigations
│     └─ screen
│     └─ shared
│  └─ contexts
│  └─ utils
│  └─ App.tsx
├─ test/
├─ .buckconfig
├─ .flowconfig
├─ .gitattributes
├─ .gitignore
├─ .watchmanconfig
├─ app.json
├─ babel.config.js
├─ index.js
├─ jest.config.js
├─ package.json
├─ README.md
├─ STRINGS.js
├─ tsconfig.json
└─ tslint.json

Setup environment variable

Hygiene uses firebase as a backend. Therefore you should paste the firebase env variables in config.ts. Currently, this this file is ignored in .gitignore. Therefore you should copy config.sample.ts to config.ts and replace the variables.

cp config.sample.ts config.ts

Also, you should replace the facebookAppId and facebookSecret for facebook login feature.

Running the project

Running the project is as simple as running

yarn start

This runs the start script specified in our package.json, and will spawn off a server which reloads the page as we save our files. Typically the server runs at http://localhost:8080, but should be automatically opened for you.

Testing the project

Testing is also just a command away:

yarn test

Result

> jest -u

 PASS  src/components/shared/__tests__/Button.test.tsx
 PASS  src/components/screen/__tests__/Intro.test.tsx
 › 2 snapshots written.

Snapshot Summary
 › 2 snapshots written in 1 test suite.

Test Suites: 2 passed, 2 total
Tests:       5 passed, 5 total
Snapshots:   2 added, 4 passed, 6 total
Time:        3.055s, estimated 6s
Ran all test suites

Writing tests with Jest

We've created test examples with jest-ts in src/components/screen/__tests__ and src/components/shared/__tests__. Since react is component oriented, we've designed to focus on writing test in same level of directory with component. You can simply run npm test to test if it succeeds and look more closer opening the source.

Localization

We've defined Localization strings in STRINGS.ts which is in root dir. We used i18n-js pacakage for this one.

import * as Localization from 'expo-localization';
import i18n from 'i18n-js';

const en = {
  HELLO: 'Hello',
  LOGIN: 'Login',
  EMAIL: 'Email',
  PASSWORD: 'Password',
  SIGNUP: 'SIGN UP',
  FORGOT_PW: 'Forgot password?',
  NAVIGATE: 'Navigate',
  CHANGE_THEME: 'Change theme',
};

const ko = {
  HELLO: '안녕하세요',
  LOGIN: '로그인',
  EMAIL: '이메일',
  PASSWORD: '패스워드',
  SIGNUP: '회원가입',
  FORGOT_PW: '비밀번호를 잊어버리셨나요?',
  NAVIGATE: '이동하기',
  CHANGE_THEME: '테마변경',
};

i18n.fallbacks = true;
i18n.translations = { en, ko };
i18n.locale = Localization.locale;

export const getString = (param: string, mapObj?: Record<string, unknown>) => {
  if (mapObj) {
    i18n.t(param, mapObj);
  }
  return i18n.t(param);
};

Fixed jest setup by adding following in jestSetup.

import { NativeModules } from 'react-native';

/**
 * monkey patching the locale to avoid the error:
 * Something went wrong initializing the native ReactLocalization module
 * https://gist.github.com/MoOx/08b465c3eac9e36e683929532472d1e0
 */

NativeModules.ReactLocalization = {
  language: 'en_US',
};