#!/bin/bash

# PL:Skrypt kontrolujacy stan tmpfs
# EN:Script for control tmpfs status

# http://filipczyk.net/optymalizacja-prestashop-16-cache-przyspieszenie/
# 2014 - Filipczyk.net

# Configration:

source_to_prestashop="/home/www/public_html"#Zmien ścieżkę do presty
security_procentage=90
check_cachefs="yes"
check_smarty_compile="yes"
check_smarty_cache="yes"
check_pagespeed="yes"

# Functions:

	# check

	function check {
		check_source $source_to_prestashop
		check_procentage $security_procentage
		check_check $check_cachefs
		check_check $check_smarty_compile
		check_check $check_smarty_cache
		check_check $check_pagespeed
	}

	function check_source {
		if [ ! -d "$1" ]; then
			echo "Error: $1 - Doesn't exists"
			exit
		fi
	}

	function check_procentage {
		check_max=100
		check_min=0
		if (("$1" > "$check_max")); then
			echo "Error: $1 - is wrong"
			exit
		fi
		if (("$1" < "$check_min")); then
			echo "Error: $1 - is wrong"
			exit
		fi
	}

	function check_check {
		if [[ "$1" != "yes" && "$1" != "no" ]]; then
			echo "Error: $1 - is wrong. Use yes or no"
			exit
		fi
	}

	# Controller

	function event_do {
		state="good"
		event="nothing to do"
		if (("$1" >= "$security_procentage")); then
			state="bad"
			event="CLEARED!"
			source_to_remove="$source_to_prestashop$2/*"
			rm -rf $source_to_remove
		fi
		echo "#$2 -> $1%/100% = $state, $event"
	}

	function controller {
		echo "tmpfs - Controler - $(date)"
		check

		if [ "$check_cachefs" = "yes" ]; then
			status=`df -h $source_to_prestashop/cache/cachefs/ | awk '{print $5}' | tail -1 | sed 's/[^0-9]*//g'`
			name="/cache/cachefs"
			event_do $status $name
		fi
		if [ "$check_smarty_compile" = "yes" ]; then
			status=`df -h $source_to_prestashop/cache/smarty/compile/ | awk '{print $5}' | tail -1 | sed 's/[^0-9]*//g'`
			name="/cache/smarty/compile"
			event_do $status $name
		fi
		if [ "$check_smarty_cache" = "yes" ]; then
			status=`df -h $source_to_prestashop/cache/smarty/cache/ | awk '{print $5}' | tail -1 | sed 's/[^0-9]*//g'`
			name="/cache/smarty/cache"
			event_do $status $name
		fi
		if [ "$check_pagespeed" = "yes" ]; then
			status=`df -h $source_to_prestashop/cache/pagespeed/ | awk '{print $5}' | tail -1 | sed 's/[^0-9]*//g'`
			name="/cache/pagespeed"
			event_do $status $name
		fi
	}

# Execution code:
controller