unlink

#!/bin/zsh
# shellcheck shell=bash

# unlink
# v0.9.8
# macOS
#
# Unlink - part of Trash Tools
# Copyright (c) 2021 Joss Brown (pseud.)
# License: MIT / place of jurisdiction: Berlin, Germany / German laws apply
#
# keyboard shortcut: CMD-OPT-DEL
#
# permanently remove (unlink) files

export LANG=en_US.UTF-8
export PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin:/opt/homebrew/bin:/opt/sw/bin:"$HOME"/.local/bin:"$HOME"/bin:"$HOME"/local/bin

uiprocess="Unlink"
account=$(id -u)

configdir="$HOME/.config/TrashTools"
protectlist="$configdir/protections.txt"
fman="$configdir/file_manager.txt"
fman_name=$(head -1 < "$fman" 2>/dev/null)
! [[ $fman_name ]] && fman_name="Finder"

_beep () {
	osascript -e 'beep' -e 'delay 0.5' &>/dev/null
}

_notify () {
	osascript &>/dev/null << EOT
tell application "System Events"
	display notification "$2" with title "$uiprocess [" & "$account" & "]" subtitle "$1"
end tell
EOT
}

if [[ $# -gt 10 ]] ; then
	_notify "⏳ Please wait!" "Checking files for protection..."
fi

rmlist=""
rmcount=0
for filepath in "$@"
do
	filename=$(basename "$filepath")
	if xattr -p "local.lcars.fpsr#PS" "$filepath" &>/dev/null ; then
		_beep &
		_notify "🔒 File is protected!" "$filename"
		continue
	fi
	if grep -q "^$filename$" "$protectlist" &>/dev/null ; then
		_beep &
		_notify "🔏 File is protected!" "config: $filename"
		continue
	fi
	if ! [[ -e "$filepath" ]] && ! [[ -h "$filepath" ]] ; then
		_beep &
		_notify "❌ File missing or inaccessible!" "$filename"
		continue
	fi
	if [[ $filename == ".DS_Store" ]] ; then
		if rm -f "$filepath" &>/dev/null ; then
			continue
		fi
	fi
	rmlist="$rmlist\n$filepath"
	((rmcount++))
done

if [[ $rmcount -eq 0 ]] ; then
	exit
fi
rmlist=$(echo -e "$rmlist" | grep -v "^$")
if [[ $rmcount -gt 1 ]] ; then
	fstr="files"
	rmnamelist=$(echo "$rmlist" | awk -F"/" '{print $NF}')
else
	fstr="file"
	rmnamelist=$(basename "$rmlist")
fi

choice=$(osascript 2>/dev/null << EOG
tell application "$fman_name"
	set theButton to button returned of (display alert ¬
		"Are you sure you want to permanently delete the following $fstr?" ¬
		buttons {"Cancel", "Permanently Delete"} ¬
		as warning ¬
		message "$rmnamelist" ¬
		cancel button 1 ¬
		default button 2 ¬
		giving up after 180)
end tell
EOG
)
if [[ $choice != "Permanently Delete" ]] ; then
	exit
fi

errors=false
errorcount=0
rootlist=""
while read -r rmpath
do
	rmname=$(basename "$rmpath")
	if ! rm -rf "$rmpath" &>/dev/null ; then
		errors=true
		if ! [[ -w "$rmpath" ]] ; then
			_notify "⚠️ File could not be removed!" "Not writable: $rmname"
		else
			_notify "⚠️ File could not be removed!" "$rmname"
		fi
		rootlist="$rootlist\n$rmpath"
		((errorcount++))
	fi
done < <(echo "$rmlist")
! $errors && exit

_beep &
rootlist=$(echo -e "$rootlist" | grep -v "^$")
if [[ $errorcount -gt 1 ]] ; then
	fstr="files"
	rootnamelist=$(echo "$rootlist" | awk -F"/" '{print $NF}')
else
	fstr="file"
	rootnamelist=$(basename "$rootlist")
fi
choice=$(osascript 2>/dev/null << EOA
tell application "$fman_name"
	set theButton to button returned of (display alert ¬
		"Some files could not be removed." & return & return & "Are you sure you want to continue and permanently delete the following $fstr with root privileges?" ¬
		buttons {"Cancel", "Permanently Delete"} ¬
		as warning ¬
		message "$rootnamelist" ¬
		cancel button 1 ¬
		default button 1 ¬
		giving up after 180)
end tell
EOA
)
if [[ $choice != "Permanently Delete" ]] ; then
	exit
fi

icon_loc="/System/Library/PreferencePanes/Security.prefPane/Contents/Resources/SystemPreferences_Security.tiff"
password=$(osascript 2>/dev/null << EOR
tell application "System Events"
	activate
	set theIconPath to POSIX file "$icon_loc"
	repeat
		display dialog "To start the file removal, you need to enter your administrator password." ¬
			with icon file theIconPath ¬
			default answer "" ¬
			with title "Unlink" ¬
			with hidden answer ¬
			buttons {"Cancel", "Enter"} ¬
			default button 2
		if button returned of the result is "Cancel" then
			return 1
			exit repeat
		else if the button returned of the result is "Enter" then
			set pswd to text returned of the result
			set usr to short user name of (system info)
			try
				do shell script "echo test" user name usr password pswd with administrator privileges
				return pswd
				exit repeat
			end try
		end if
		end repeat
end tell
EOR
)
if [[ $password == 1 ]] ; then
	exit
fi

fcount=0
scount=0
errors=false
while read -r rootfile
do
	echo -n "$password" | sudo -S rm -rf "$rootfile" 2>/dev/null
	if [[ $? == 1 ]] ; then
		rootname=$(basename "$rootfile")
		_notify "⚠️ Removal error!" "$rootname"
		((fcount++))
		errors=true
	else
		((scount++))
	fi
done < <(echo "$rootlist")
if $errors ; then
	_beep &
	if [[ $scount -eq 0 ]] ; then
		if [[ $fcount -eq 1 ]] ; then
			fstr="file"
		else
			fstr="files"
		fi
		_beep &
		_notify "⚠️ Removal error!" "$fcount $fstr remaining"
	else
		if [[ $fcount -eq 1 ]] ; then
			fstr="file"
		else
			fstr="files"
		fi
		if [[ $scount -eq 1 ]] ; then
			sstr="file"
		else
			sstr="files"
		fi
		_beep &
		_notify "☑️ $scount $sstr removed" "$fcount $fstr remaining"
	fi
fi

exit 0