Build script on Android for React Native.

rn_build_script.sh

#! /usr/bin/env bash

# change env to dev
cat env.dev > .env;

cat documents/google-services/google-services-dev.json > android/app/google-services.json;

cat <<END >android/app/src/main/res/values/strings.xml
<resources>
    <string name="app_name">Dev Example</string>
</resources>
END

# auto open file on VS Code (Only on Ubuntu)
if [[ "$OSTYPE" != "darwin"* ]]; then
  code -r package.json;
  code -r .env;
  code -r android/app/build.gradle;
  code -r android/app/google-services.json;
  code -r android/app/src/main/res/values/strings.xml;
fi 

PACKAGE_VERSION=$(cat package.json \
  | grep version \
  | head -1 \
  | awk -F: '{ print $2 }' \
  | sed 's/[",\t ]//g')

APPLICATION_ID=$(cat android/app/build.gradle \
  | grep applicationId \
  | head -1 \
  | awk '{ print $2 }' \
  | sed 's/[",\t ]//g')

VERSION_CODE=$(cat android/app/build.gradle \
  | grep versionCode \
  | head -1 \
  | awk '{ print $2 }' \
  | sed 's/[\t ]//g')

VERSION_NAME=$(cat android/app/build.gradle \
  | grep versionName \
  | head -1 \
  | awk '{ print $2 }' \
  | sed 's/[",\t ]//g')

PACKAGE_NAME=$(cat android/app/google-services.json \
  | grep package_name \
  | head -1 \
  | awk '{ print $2 }' \
  | sed 's/[",\t ]//g')

APP_NAME=$(cat android/app/src/main/res/values/strings.xml \
  | grep app_name \
  | head -1 \
  | awk -F'[<>]' '/"app_name"/ {print $3}' \
  | sed 's/["]//g')

echo "version:" $PACKAGE_VERSION;
echo "application_id:" $APPLICATION_ID;
echo "version_code:" $VERSION_CODE;
echo "version_name:" $VERSION_NAME;
echo "package_name:" $PACKAGE_NAME;
echo "app_name:" $APP_NAME;
cat .env; echo