#!/bin/bash

function _cleanup()
{
  unset -f _usage _cleanup ; return 0
}

## Clear out nested functions on exit
trap _cleanup INT EXIT RETURN

###### some declarations ######
forceBuild=no

function _usage() {
  ###### U S A G E : Help and ERROR ######
  echo $@
  echo "Usage:"
  echo "./install [-f]"
}

[ $# = 0 ] && _usage "  >>>>>>>> no options given "

##################################################################    
#######  "getopts" with: short options  AND  long options  #######
#######            AND  short/long arguments               #######
while getopts ':f-' OPTION ; do
  case "$OPTION" in
    f  ) forceBuild=yes                       ;;
    -  ) [ $OPTIND -ge 1 ] && optind=$(expr $OPTIND - 1 ) || optind=$OPTIND
         eval OPTION="\$$optind"
         OPTARG=$(echo $OPTION | cut -d'=' -f2)
         OPTION=$(echo $OPTION | cut -d'=' -f1)
         case $OPTION in
             --force       ) forceBuild=yes                       ;;
             * )  _usage " Long: >>>>>>>> invalid options (long) ";exit 1;;
         esac
       OPTIND=1
       shift
      ;;
    ? )  _usage "Short: >>>>>>>> invalid options (short) ";exit 1;;
  esac
done

echo -e "Welcome to use libpdk project"
if [ ! -d "build" ]
then
    echo -e "create the build directory"
    mkdir build
    cd build
else
    cd build
    if [ "$forceBuild" == "yes" ]
    then
         echo -e "clean the build directory"
         rm -Rf *
    fi
fi
echo -e "init the submodules of libpdk project"
git submodule init

echo -e "build configure libpdk"
cmake ../
if [ $? ]
then
    echo "something is wrong, maybe the build system can't find php-config"
    echo "you can try ./install --php-config-path=path"
fi