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Android	iOS

Looking for the Yoroi Extension? See here

Development

Installation Mac

Common instalation IOS/Android

• Install nvm

• Install node 16.5.0

nvm install 16.5.0
nvm alias default 16.5.0

• Install yarn:

npm install -g yarn

• Install python 2.7.18:

brew install pyenv
pyenv install 2.7.18

• Install Rust:

curl https://sh.rustup.rs -sSf | sh
rustup toolchain install 1.41.0
rustup install 1.41.0
rustup target add wasm32-unknown-unknown --toolchain 1.41.0
rustup default 1.41.0

iOS preparation

• Recommended MacOS version: Catalina

• Recommended xcode version: 12.4

• Recommended xcode command-line version: 12.4

• Install cocoapods version 1.11.3 and download ios dependencies:

brew install cocoapods@1.11.3

• Install rust build targets:

rustup target add aarch64-apple-ios armv7-apple-ios armv7s-apple-ios x86_64-apple-ios i386-apple-ios

• Install cargo-lipo version 3.1.1 for building:

cargo install --version 3.1.1 cargo-lipo

Additional configuration for MacOS Big Sur users

MacOS Big Sur changed the default path of the system C linker, which breaks cargo lipo. Some approaches to fix this are detailed here TimNN/cargo-lipo#41.

Android Preparation

• Install last version of Android Studio and install the latest version of Android SDK Command-line tools and Android SDK Platform-Tools. It can be done from Android Studio -> Appareance & Behavior -> System Settings -> Android SDK -> "SDK Tools" tab after activating in this section Show Package Details

• Add this to your .bashrc/.zshrc file:

export ANDROID_SDK_ROOT=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_SDK_ROOT/emulator
export PATH=$PATH:$ANDROID_SDK_ROOT/platform-tools
export PATH=$PATH:$ANDROID_SDK_ROOT/cmdline-tools/latest/bin

• Update the Android SDK:

sdkmanager "tools"
sdkmanager --update
sdkmanager --list
sdkmanager "build-tools;28.0.3" "platform-tools" "platforms;android-28" "tools"
sdkmanager --licenses

• Install the Android NDK:

sdkmanager --install "ndk;20.0.5594570"

• Install java 8:

brew tap adoptopenjdk/openjdk
brew install --cask adoptopenjdk8

Existing users of Homebrew may encounter Error: Cask adoptopenjdk8 exists in multiple taps due to prior workarounds with different instructions. This can be solved by fully specifying the location with:

brew install --cask adoptopenjdk/openjdk/adoptopenjdk8

• Install Rust packages:

rustup target add aarch64-linux-android armv7-linux-androideabi i686-linux-android x86_64-linux-android

• Install wasm-prkg:

curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

• Install gradle:

brew install gradle

Optional

• Create a virtual device from Android studio with the following specs:

  • Pixel 2 device
  • System Image:
    • Release name: R
    • API level: 30
    • ABI: x86_64
    • Target: Android 11 (Google APIs)

Installation Windows + WSL2 Ubuntu / Ubuntu

NOTE

The Windows + WSL2 Ubuntu is used in the instruction for building project for android devices.
The instruction is checked.
It should work for the Ubuntu also, but it is not checked.

Android preparation

WSL2 Ubuntu preparation

• Install additional tools:

sudo apt-get update
sudo apt-get install build-essential git curl wget unzip socat -y

• Install Rust:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup toolchain install 1.41.0
rustup install 1.41.0
rustup target add wasm32-unknown-unknown --toolchain 1.41.0
rustup default 1.41.0
rustup target add aarch64-linux-android armv7-linux-androideabi i686-linux-android x86_64-linux-android

• Install wasm-prkg:

curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

• Install nvm
• Install Java 8:

sudo apt-get install openjdk-8-jdk

• If you have other java version switch to the 8 version by running the command:

sudo update-alternatives --config java

• Install Python 2:

sudo apt-get install python

• Install the Android SDK:

wget https://dl.google.com/android/repository/commandlinetools-linux-6200805_latest.zip
cd ~
mkdir -p Android/Sdk
unzip commandlinetools-linux-6200805_latest.zip -d Android/Sdk

• Add the next lines to your .bashrc

export ANDROID_HOME=$HOME/Android/Sdk
export PATH="$ANDROID_HOME/emulator:$ANDROID_HOME/tools:$ANDROID_HOME/tools/bin:$ANDROID_HOME/platform-tools:$PATH"
# Make sure emulator path comes before tools. Had trouble on Ubuntu with emulator from /tools being loaded instead of the one from /emulator
# Further lines are only necessary if you use Windows + WSL2 Ubuntu
export WSL_HOST_IP="$(tail -1 /etc/resolv.conf | cut -d' ' -f2)"
export ADB_SERVER_SOCKET=tcp:$WSL_HOST_IP:5037

• Update the Android SDK:

sdkmanager --sdk_root=${ANDROID_HOME} "tools"
sdkmanager --update
sdkmanager --list
sdkmanager "build-tools;28.0.3" "platform-tools" "platforms;android-28" "tools"
sdkmanager --licenses

• Install the Android NDK:

sdkmanager --install "ndk;20.0.5594570"

• Install the Gradle:

sudo apt install gradle -y

Windows preparation

• Install Android studio
• In the Android Studio install Android SDK Build-Tools, NDK, CMake, Android emulator, Android SDK Platform tools
• Add the following lines to the system PATH:

setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk"
setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk\emulator"
setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk\platform-tools"
setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk\tools"
setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk\tools\bin"
setx /m PATH "C:\Users\<YOUR_USER>\AppData\Local\Android\Sdk\tools\lib\x86_64\swt.jar"

• Install Java 8
• Add the variable JAVA_HOME to your system variables:
  setx /m JAVA_HOME "C:\Program Files\Java\jre1.8.0_311\bin"
• Prepare Windows Firewall:

Add a Windows Firewall Rule (gotten from [here](https://github.com/Emurgo/react-native-haskell-shelley/issues/12#issuecomment-741967533))

Open Windows Defender Firewall and go to Advanced Settings.
Right click on "Inbound Rules" and click "New Rule"
Select "Port" then Specific TCP port "5037", then "Allow the connection"
Check Domain, Private, and Public as needed for your Internet connection (I only added Domain and Private)
Name the rule whatever suits you
After the firewall entry is added, right click on it and go to Properties
Go to Scope -> Remote IP Addresses -> Add "172.16.0.0/12" (this is the WSL VM subnet)

Connecting a device, Windows + WSL2 Ubuntu (Physical or virtual device)

This requires a physical Android phone & USB cable, the Android Studio should be installed on Windows

On Windows

1. Connect a device to your Windows PC OR run a device emulator, the developer option on the Android phone should be ON, debugging via USB is also ON
2. Run this commands in the PowerShell Admin Terminal (or you can create a PS script and run it as an Admin):

iex "netsh interface portproxy delete v4tov4 listenport=8081 listenaddress=127.0.0.1" | out-null;
$WSL_CLIENT = bash.exe -c "ip addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}'";
$WSL_CLIENT -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
$WSL_CLIENT = $matches[0];
iex "netsh interface portproxy add v4tov4 listenport=8081 listenaddress=127.0.0.1 connectport=8081 connectaddress=$WSL_CLIENT"

3. Kill the adb server (just in case)

adb kill-server

4. Start the adb server

adb -a -P 5037 nodaemon server

If you want to use an emulator
Run another Terminal as Admin
Create an image (how to do it from command line)
Run an emulator

emulator -avd <image_name>

On WSL2 Ubuntu

5. Run WSL Terminal
6. Execute the command

socat -d -d TCP-LISTEN:5037,reuseaddr,fork TCP:$(cat /etc/resolv.conf | tail -n1 | cut -d " " -f 2):5037

7. Run another WSL Terminal

yarn start

First time

Make sure the rust targets for the platform you will work on (android/iOS) have been correctly installed with rustup show. Then:

1. Clone the project

cd ~ && mkdir Emurgo && cd Emurgo
git clone https://github.com/Emurgo/yoroi-mobile.git
cd yoroi-mobile

2. Run the nvm use command
3. yarn install
4. yarn setup_configs - links libraries to ios testnet build configurations
5. When building on iOS: cd ios && pod install

If these steps fail, try looking at the android CLI

Launching

1. react-native start - this will run RN packager, let it running (optional step)
2. react-native run-android --variant=devDebug --appIdSuffix=staging - it will build a debug package with the testnet version and install it on the connected device
3. react-native run-android --variant=mainnetDebug - for version with mainnet
4. react-native run-ios --scheme=emurgo-staging --configuration=Staging.Debug - staging (testnet) configuration
5. react-native run-ios --scheme=emurgo --configuration=Debug - production configuration

Testing

Unit Testing

To run all unit tests:

$ yarn test

You can also run single test files, e.g.:

$ jest wallet.test.js

End-to-end Testing

For E2E testing we use the detox framework.

Requirements

• iOS: MacOS 10.13 (High Sierra) or higher, Xcode 10.1 or higher.
• Android: Tested on Android Studio 3.5.1. Simulator: Android >= 9, API >= 28 (but prior versions may work too).

Setup (applies to iOS only)

You only need to follow the instructions listed in the Step 1 of Detox's official docs:

$ brew tap wix/brew
$ brew install applesimutils
$ npm install -g detox-cli

Building and Running

Important: You need to build the app not only the first time you run the tests but also anytime you modify the code.

$ yarn e2e:build-android # for ios just replace "android" by "ios"
$ yarn e2e:test-android

This will build and test a release version of the app.

Debugging

Read through this page to understand debugging for React-Native

React-Native Debugger

This will allow you to put breakpoints and everything else you would ever need.

1. Download & run https://github.com/jhen0409/react-native-debugger/releases
2. While app is running, open debug menu
3. Select Debug JS remotely

Releasing

1. Follow Signed Android APK to generate and setup signing certificate for Android (required only before first release).
2. cd android
3. ./gradlew assembleMainRelease

Important: You may run into Could not follow symbolic link third-party/glog-0.3.5/test-driver error if you try to build Android release on Mac. This is caused by incorrect linking in react-native/npm. To fix the issue, locate path where automake is installed (default /usr/local/share) and re-link file by running command:

ln -sf /usr/local/share/automake-<version>/test-driver <path_to_repo>/third-party/glog-0.3.5/test-driver

Troubleshooting

Checking that Rust is well setup (iOS & Android)

After following the instructions for iOS and Android -- it is not required to install both, rustup show should return something like this:

rustup show
Default host: x86_64-apple-darwin
rustup home:  /Users/nijaar/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
1.41.0-x86_64-apple-darwin (default)

installed targets for active toolchain
--------------------------------------

aarch64-apple-ios
aarch64-linux-android
armv7-apple-ios
armv7-linux-androideabi
armv7s-apple-ios
i386-apple-ios
i686-linux-android
x86_64-apple-darwin
x86_64-apple-ios
x86_64-linux-android

active toolchain
----------------

1.41.0-x86_64-apple-darwin (default)
rustc 1.41.0 (5e1a79984 2020-01-27)

Binaryen submodule problems

If you have been facing the problem

failed to fetch submodule `binaryen` from git@github.com:WebAssembly/binaryen.git

These steps should help you.

1. It is necessary to create a ssh-key and to add it to your GitHub account. The GitHub instruction how to do that
   
2. Add the generated ssh-key to your ssh-agent

eval `ssh-agent -s`
ssh-add ~/.ssh/<your_private_key>

If the error still persists.

Add the github.com to your ~/.ssh/known_hosts

1. Get the github.com ip-address

ping github.com -c 1

2. Get the github.com public ssh keys by GitHub ip-address

ssh-keyscan <github.com ip-address>

The output will be something like that

140.82.121.3 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
140.82.121.3 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg=
140.82.121.3 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl

3. Copy one of output strings and place it into your ~/.ssh/known_hosts.
   • If the setting HashKnownHosts is yes (Debian and Ubuntu it is yes by default) it is necessary to re-hash your known-hosts file.
     • To check the state of the setting, check the file /etc/ssh/ssh_config (Ubuntu)
     • Re-hashing the known_hosts file

   ssh-keygen -Hf ~/.ssh/known_hosts

Code style

Imports

The imports should be in this order:

1. import of external libraries
2. import of our custom code
3. import of component styles
4. import of types

Example:

// external libraries
import React from 'react'
import {compose} from 'redux'
import {connect} from 'react-redux'
import {View} from 'react-native'

// our code
import Screen from '../../components/Screen'
import AdaIcon from '../../assets/AdaIcon'
import {confirmationsToAssuranceLevel, printAda} from '../../helpers/utils'

// types
import type {TransactionType} from '../../types/HistoryTransaction'

Styles

• If you use component in multiple screens, it should be in UiKit folder with other UI components and imported from it.
• Each component file has own file with styles.
• Don't import multiple style files into one component.
• Keep the style's structure flat.
• If there is same component in UiKit as in react-native, use the one from UiKit.

// src/components/UiKit/index.js
// Example of export for a default component that can be imported from UI.
export {default as Button} from './Button'

import {Text, Button, Input} from '../UiKit'

// ...

Variables

import {colors} from './config'

// Wrong
// The background color can change, gray is constant name for specific color.
background: colors.GRAY
// ...

// Good
// Changing the background color doesn't require to change the name.
// We want to change values, not labels most of time.
background: colors.background
// ...