#!/bin/bash

ROOT_DIR=$(dirname $(readlink -f $0))
SELF=$(readlink -f $0)

print_usage() {
  echo "create tools for minilinux"
  echo "Usage: $(basename $SELF) TOOL"
}

if [ "x$1" = "x" ]; then
   print_usage
   exit 0
elif [ "x$(whoami)" != "xroot" ]; then
   echo "ERROR: You need to have root rights to install packages."
   exit 1
fi

#Create tools directory if not exists
TOOL_DIR=$ROOT_DIR/tools
INIT_DIR=$ROOT_DIR/stage3.2

setup_git ()
{
	if [ ! -z "$GIT" ]; then
		GIT_BIN=$(which git)
		[ -z "$GIT_BIN" ] && echo "Installing git..." && apt-get install git
	fi
}

read_config () 
{
	TOOL_CONFIG=$TOOL_DIR/$TOOL/$TOOL.conf

	if [ ! -e $TOOL_CONFIG ]; then
		 echo "ERROR: Config for specified tool not found."
		 exit 1
	fi

	. $TOOL_CONFIG
}

read_build () 
{
	BUILD_SCRIPT=$TOOL_DIR/$TOOL/build.$TOOL

	if [ ! -e $BUILD_SCRIPT ]; then
		 echo "ERROR: Build script for specified tool not found."
		 exit 1
	fi

	. $BUILD_SCRIPT
}

copyfileswithdependencies ()
{
	[ ! -d build ] && echo "No build directory for $TOOL found." && return
	cd build

	[ ! -d $INIT_DIR ] && mkdir $INIT_DIR

	COPYFILES_LIST="copyfiles.list"
	[ -e $COPYFILES_LIST ] && rm $COPYFILES_LIST

	for FILENAME in $REQUIRED_BINARIES
	do
	  for f in $(find . -name $FILENAME -type f -executable)
          do
             [ $(file $f |grep -i Executable |grep -c ELF) -eq 1 ] && FILE=$f
          done
	  echo $FILE >> $COPYFILES_LIST
	  #fetch dependencies
	  for i in $(ldd $FILE |awk -F ">" '{print $2}'|awk '{print $1}'|grep ^/)
	  do
	  	filename_base=$(basename $i | awk -F "." '{print $1}') 
		filename_path=$(dirname $i)
		echo "$filename_path/$filename_base*" >> $COPYFILES_LIST
	  done
	done 

	# fast hack
        LDLINUX=$(ldd $FILE | grep ld-linux | awk '{print $1}' |cut -c2-)
	echo "/$LDLINUX" >> $COPYFILES_LIST
	tar -cpv $(readlink "/$LDLINUX") | tar -xpv -C $INIT_DIR
        case $LDLINUX in
          *lib/*) 
		#cp -a /lib/ld-* $INIT_DIR/lib/ ;;
		#tar -cpv $(readlink "/$LDLINUX") | tar -xpv -C $INIT_DIR
		;;
          *lib64/*) 
		#cp -a /lib64/ld-* $INIT_DIR/lib64/ ;;
		#tar -cpv "/lib64/ld-*" | tar -xpv -C $INIT_DIR 
		;;
        esac

	for FILENAME in $REQUIRED_FILES
	do
		 for f in $(find . -name $FILENAME)
                 do
                    [ $(file $f |grep -c ELF) -eq 0 ] && FILE=$f
		 echo $FILE >> $COPYFILES_LIST
                 done
		 #echo $FILE >> $COPYFILES_LIST
	done

	#copy to initramfsdir
	tar -cpv $(cat $COPYFILES_LIST) | tar -xpv -C $INIT_DIR
}

main () {
	
	cd $TOOL_DIR
	while (( "$#" )); do
		TOOL=$1
		if [ -d $TOOL ];
		then
	 		cd $TOOL
			read_config
			read_build		
			setup_git
			install_dependencies
			fetch_source
			build
			copyfileswithdependencies
		else
			echo "Tool directory not found."
		fi
		shift
	done

}


main $@