#! /bin/bash

DIR=$HOME/.arc;

while getopts d: opt; do
  case $opt in
  d)
      DIR=$OPTARG
      ;;
  esac
done

LIBPHUTIL_DIR=$DIR/libphutil;
ARCANIST_DIR=$DIR/arcanist;

command -v git >/dev/null 2>&1 || { echo "Git is not installed. Installing git..." >&2; sudo apt-get install git; }
command -v php5 >/dev/null 2>&1 || { echo "php5 is not installed. Installing php5..." >&2; sudo apt-get install php5 php5-curl; }

# curl check
curl_check_command="php5 -r \"echo function_exists('curl_version');\"";
CURL_CHECK=$(eval "$curl_check_command");
if [[ "$CURL_CHECK" -ne 1 ]]; then
	echo "php5-curl is not installed. Installing php5-curl...";
	sudo apt-get install php5-curl;
	CURL_CHECK=$(eval "$curl_check_command");
	if [[ "$CURL_CHECK" -ne 1 ]]; then
		echo "Unable to install php5-curl. Aborting!";
		exit 1;
	fi;
fi;

echo "All dependencies installed!";

echo "Installing arcanist in $DIR";
mkdir -p "$DIR";

if [ -d "$LIBPHUTIL_DIR" ]; then
	echo "Found $LIBPHUTIL_DIR already present. Skipping libphutil cloning.";
else
	echo "Cloning libphutil...";
	git clone https://github.com/phacility/libphutil.git "$LIBPHUTIL_DIR";
fi;

printf "\n";

if [ -d "$ARCANIST_DIR" ]; then
	echo "Found $ARCANIST_DIR already present. Skipping arcanist cloning.";
else
	echo "Cloning arcanist...";
	git clone https://github.com/phacility/arcanist.git "$ARCANIST_DIR";
fi;

printf "\n";

BASH_RC=$HOME/.bashrc;
BASH_PROFILE=$HOME/.bash_profile;
PROFILE_FILE="";
PATH_STR="export PATH=\"$ARCANIST_DIR/bin/:\$PATH\"";
BASH_COMPLETION_STR="source $ARCANIST_DIR/resources/shell/bash-completion"

if [ -f "$BASH_RC" ]; then
	echo "Adding PATH in $BASH_RC";
	PROFILE_FILE="$BASH_RC";
elif [ -f "$BASH_PROFILE" ]; then
	echo "Unable to find $BASH_RC. Found $BASH_PROFILE. Adding PATH in $BASH_RC";
	PROFILE_FILE="$BASH_PROFILE";
else
	echo "Unable to find $BASH_RC or $BASH_PROFILE. Aborting!";
	echo "Add \"$PATH_STR\" in your profile file.";
        echo "Add \"$BASH_COMPLETION_STR\" in your profile file to enable tab-completion for arc";
	exit 1;
fi;

if [[ :$PATH: == *:"$PROFILE_FILE":* ]] ; then
    echo "$PROFILE_FILE is already present in \$PATH. Skipping."
else
    echo "$PATH_STR" >> "$PROFILE_FILE";
    echo "$BASH_COMPLETION_STR" >> "$PROFILE_FILE";
fi

printf "\033[0;32m";
cat <<EOM

Arcanist Installation Successful!
Run "source $PROFILE_FILE" to reload PATH variable.
Run "arc" to check if it has been installed. 
Run "arc install-certificate" to intialize arcanist
EOM

printf '\033[0m'

exit 0;