#! /bin/sh
# laravel-prep (Bourne shell script) -- system dependencies for Laravel LTS
# Version: 1.0
#
# https://laravel.com/docs/5.5/installation 
#
# TO-DO:
#   + Detect OS
#   + Support RHEL-equivalents
#   + Support Fedora
#   + Support Amazon Linux

set -e

# Detect PHP 7
if output=$(php -i)
then
  maj_ver=$(echo "$output" | sed -n '1,10 s/^PHP Version => \([^.]*\).*/\1/p')
  if [ -n "$maj_ver" ] ; then
    if [ "$maj_ver" -lt 7 ] ; then
      echo "PHP version $maj_ver is insufficient for running Laravel 5.5" >&2
      exit 3
    fi
  else
    echo "Can't find PHP version in output of 'php -i'" >&2
    exit 4
  fi
else
  echo "Can't run PHP CLI to query version" >&2
  exit 2
fi


# Detect DB driver
db_driver=n
for o in php-mysql php-pgsql php-sqlite3 ; do
  if dpkg-query -W $o 2>/dev/null
  then
    db_driver=y
  fi
done
while [ $db_driver = n ] ; do
  echo "Please select your desired DB driver: "
  echo "  1) MySQL"
  echo "  2) Postgres"
  echo "  3) SQLite"
  echo "  0) cancel"

  read -p '> ' choice

  case $choice in
    1) db_driver=php-mysql ;;
    2) db_driver=php-pgsql ;;
    3) db_driver=php-sqlite3 ;;
    0) exit 5 ;;
  esac
done
if [ $db_driver != y ] ; then
  extra="$extra $db_driver"
fi


# If composer is not already (manuall) installed, install the system package
if ! type -t composer > /dev/null
then
  extra="$extra composer"
fi


apt update
apt install php-pdo php-tokenizer php-xml php-mcrypt php-mbstring $extra