#!/bin/bash
#date: 28/06/2017, author: nbodev
#remove package from mac os
# tested on mac os Sierra

#steps
#pkgutil --pkgs # list all installed packages
#pkgutil --files the-package-name.pkg # list installed files for a given package
#pkgutil --pkg-info the-package-name.pkg # check the location of a given package
#cd / # assuming the package is rooted at /...
#pkgutil --only-files --files the-package-name.pkg | tr '\n' '\0' | xargs -n 1 -0
#pkgutil --only-files --files the-package-name.pkg | tr '\n' '\0' | xargs -n 1 -0 sudo rm -f
#pkgutil --only-dirs --files the-package-name.pkg | tail -r | tr '\n' '\0' | xargs -n 1 -0
#pkgutil --only-dirs --files the-package-name.pkg | tail -r | tr '\n' '\0' | xargs -n 1 -0 sudo rmdir
#sudo pkgutil --forget the-package-name.pkg
#pkgutil --files the-package-name.pkg # list installed files



read -p "Enter package name: " name
pkgutil --pkgs | grep -i $name
read -p "Enter the package full name (e.g. the-package-name.pkg): " full_name
echo  "************ running pkgutil --files $full_name"
pkgutil --files $full_name
if  [ $? == 0 ]; then #package name correct
	echo  "************ running pkgutil --pkg-info $full_name"
	pkgutil --pkg-info $full_name

	read -p "Step 1/2 => Continue scanning the package, nothing will be deleted ? (Y)" answer
	if [  $answer == "Y" ]; then
		cd / # assuming the package is rooted at /...
		echo  "************ running pkgutil --only-files --files $full_name | tr '\n' '\0' | xargs -n 1 -0"
		pkgutil --only-files --files $full_name | tr '\n' '\0' | xargs -n 1 -0
		echo  "************ running pkgutil --only-dirs --files $full_name | tail -r | tr '\n' '\0' | xargs -n 1 -0"
		pkgutil --only-dirs --files $full_name | tail -r | tr '\n' '\0' | xargs -n 1 -0
	else
		echo "Aborting Step 1/2 ..."
		exit 0
	fi

	read -p "Step 2/2 => Danger zone: delete the package ? (Y)" answer_danger
	if [  $answer_danger == "Y" ]; then
		cd / # assuming the package is rooted at /...

		echo  "************ running pkgutil --only-files --files $full_name | tr '\n' '\0' | xargs -n 1 -0 sudo rm -f"
		pkgutil --only-files --files $full_name | tr '\n' '\0' | xargs -n 1 -0 sudo rm -f

		echo  "************ running pkgutil --only-dirs --files $full_name | tail -r | tr '\n' '\0' | xargs -n 1 -0 sudo rmdir"
		pkgutil --only-dirs --files $full_name | tail -r | tr '\n' '\0' | xargs -n 1 -0 sudo rmdir

		echo  "************ running sudo pkgutil --forget $full_name"
		sudo pkgutil --forget $full_name

		echo  "************ running pkgutil --files $full_name" #run again to check if the package is still here or not
		pkgutil --files $full_name
	else
		echo "Aborting Step 2/2 ..."
		exit 0
	fi
else
	echo "looks like the the package full name is wrong " $full_name
	exit 1
fi