#!/bin/bash


###
###		MAKE BACK-UPS
###		I AM NOT RESPONSIBLE
###		MAKE BACK-UPS
###		DON'T USE REGEXES
###		MAKE BACK-UPS
###		D O  N O T   U S E   R E G E X E S
###		MAKE BACK-UPS

###
###
###		oh, and make back-ups



# Where the php.ini file is stored
inifile="/etc/php/php.ini"

# Get extension
ext="$1"


RED=$(echo -e '\e[91m')
GREEN=$(echo -e '\e[92m')
BOLD=$(echo -e '\e[1m')
NONE=$(echo -e '\e[0m')



# Check if extension specified
if [ "x$ext" = "x" ]; then
	echo $RED"No extension specified"$NONE >&2
	exit 1
fi


# Check if ini file exists
if ! [ -f "$inifile" ]; then
	echo $RED"INI file not found (check script)"$NONE >&2
	exit 1
fi

# Check if we have the right permissions
if ! [ -r "$inifile" -a -w "$inifile" ]; then
	echo $RED"Not enough permissions for INI file (try sudo?)"$NONE >&2
	exit 1
fi

# Check if user read the warnings
if [ "$ext" = ".*" ]; then
        lines=$(cat "$inifile" | wc -l)
        echo $RED"Replaced $lines lines with $ext because you didn't read the warnings"$NONE >&2
        echo "(I hope you have back-ups)" >&2
        exit 1
fi

# Create back-up just in case user is stupid
cp "$inifile" "/tmp/.php-toggle-ext-php.ini.bak" >/dev/null


# Regexes
REX_ALL="^;?extension"
REX_ENA="^extension"
REX_DIS="^;extension"


# Find the line(s) matching this extension
matches=$(grep -E "$REX_ALL=$ext\$" "$inifile")


# Check if any matches are found
if [ $? -ne 0 ]; then
	echo $RED"Failed to find extension in INI file"$NONE >&2
	echo

	# Show extensions that contain given value
	echo "Maybe you want one of these?"

	#                                               enabled => green   ; disabled => red  ; tab    ; end color
	grep -E "$REX_ALL=.*$ext" "$inifile" | sed -E "s/$REX_ENA=/$GREEN/g;s/$REX_DIS=/$RED/g;s/^/\t/g;s/\$/$NONE/g"

	exit 1
fi


# Count amount of matches
amount=$(echo "$matches" | wc -l)

# Warn for multiple lines (this shouldn't happen)
if [ $amount -ge 2 ]; then
	echo $RED"Too many matches ($amount) found, only changing the first line!!"$NONE >&2
fi


# Check state of extension
grep -E "$REX_ENA=$ext\$" "$inifile" >/dev/null
state=$?

# Toggle state
if [ $state -eq 0 ]; then
	echo -n "[      ] Disabling extension $BOLD$ext$NONE"
	sed -Ei "s/$REX_ENA=$ext\$/;extension=$ext/" "$inifile"
	echo -e "\r[$GREEN DONE $NONE]"
else
	echo -n "[      ] Enabling extension $BOLD$ext$NONE"
	sed -Ei "s/$REX_DIS=$ext\$/extension=$ext/" "$inifile"
	echo -e "\r[$GREEN DONE $NONE]"
fi