#!/bin/bash
export TERM=dumb

cd ~

mkdir ~/.ecp_conf/ 2>/dev/null
if [ -f ~/.ecp_conf/disabled ] ; then
        echo "WP Cache disabled.  If you want to continue with the install, delete ~/.ecp_conf/disabled"
        exit
fi

if [ -f ~/.ecp_conf/installed_on ] ; then
        install_time=$(expr `date +%s` - `date +%s -r ~/.ecp_conf/installed_on`)
        echo "$install_time -lt 259200 "
        if [ $install_time -lt 259200 ] ; then
                echo "WP Cache has recently been installed.  If you really want to continue.  Please delete ~/.ecp_conf/installed_on"
                exit;
        fi

fi

touch ~/.ecp_conf/installed_on


export WP_CLI_CONFIG_PATH=/opt/eig_wp/wp-cli.yml
WP_COMMAND='/usr/php/54/usr/bin/php-cli /usr/local/bin/wp'
WP_CONFIGS=$(ls wp-config.php public_html/wp-config.php public_html/*/wp-config.php 2>/dev/null)
WP_A=$(echo $WP_CONFIGS | tr ";" "\n")
#fetch cache plugins for later (once instead of once per install)
mkdir -p cache_temp 2>/dev/null
wget -q https://raw.githubusercontent.com/bluehost/endurance-page-cache/production/endurance-page-cache.php -O endurance-page-cache.php
if [ $? -ne 0 ] ; then
	echo "[ERROR] pagecache file didn't download"
	exit;
fi

wget -q https://raw.githubusercontent.com/bluehost/endurance-browser-cache/production/endurance-browser-cache.php -O endurance-browser-cache.php
if [ $? -ne 0 ] ; then
	echo "[ERROR] pagecache file didn't download"
	exit;
fi

for WP_CONFIG in $WP_A ; do

	if grep -q "AUTOSAVE_INTERVAL" $WP_CONFIG ; then
		echo "AUTOSAVE_INTERVAL already set."
	else
		sed -i "/stop editing/i define( 'AUTOSAVE_INTERVAL', 300 )\;" $WP_CONFIG
		echo "AUTOSAVE_INTERVAL added."
	fi

	if grep -q "WP_POST_REVISIONS" $WP_CONFIG ; then
		echo "WP_POST_REVISIONS already set."
	else
		sed -i "/stop editing/i define( 'WP_POST_REVISIONS', 5 );" $WP_CONFIG
		echo "WP_POST_REVISIONS added."
	fi

	if grep -q "EMPTY_TRASH_DAYS" $WP_CONFIG ; then
		echo "EMPTY_TRASH_DAYS already set."
	else
		sed -i "/stop editing/i define( 'EMPTY_TRASH_DAYS', 7 );" $WP_CONFIG
		echo "EMPTY_TRASH_DAYS already set."
	fi

	if grep -q "WP_CRON_LOCK_TIMEOUT" $WP_CONFIG ; then
		echo "WP_CRON_LOCK_TIMEOUT already set."
	else
		sed -i "/stop editing/i define( 'WP_CRON_LOCK_TIMEOUT', 120 );" $WP_CONFIG
		echo "WP_CRON_LOCK_TIMEOUT added."
	fi

	DIR=$(dirname "${WP_CONFIG}")

	WP_SITE=$($WP_COMMAND option get siteurl --path=$DIR)

	if [ "$($WP_COMMAND option get mm_cache_settings --path=$DIR )" == "disabled" ] ; then
		echo "[WARN] Client has disabled WP Caching on $WP_SITE :: $DIR"
		clontinue
	fi

	if [ "$($WP_COMMAND eval 'echo "!@";' --path=$DIR 2>&1 )" != "!@" ] ; then
		echo "[ERROR] There appears to be an error with this site. Let's not add cache plugins. $WP_SITE :: $DIR"
		continue
	fi

	if [ -z "$($WP_COMMAND option get permalink_structure --path=$DIR)" ] ; then
		echo "[WARN] Site doesn't have permalinks. $WP_SITE :: $DIR"
		continue
	fi

	$WP_COMMAND option update close_comments_for_old_posts 1 --path=$DIR
	$WP_COMMAND option update close_comments_days_old 28 --path=$DIR

	#make a backup of the htaccess file
	cp ${DIR}/.htaccess ${DIR}/.htaccess.cache.`date +%s`

	PLUGINS=`$WP_COMMAND plugin list --fields=name --format=csv --path=$DIR`

	if [ $? -ne 0 ] ; then
		echo "[ERROR] Plugins not listed. $WP_SITE :: $DIR"
		continue
	fi

	PATTERN='(cach|rand|ithemes|quote|wpml|rocket)'
	CACHE=`egrep --regexp="$PATTERN" <<< "$PLUGINS"`
	CACHE=($CACHE)
	COUNT="${#CACHE[@]}"

	if [ $COUNT -gt 0 ] ; then
		echo "[WARN] Caching, Random, itheme, or quote plugin in use. $WP_SITE :: $DIR"
		continue
	else

		WP_CONTENT=$($WP_COMMAND eval 'echo WP_CONTENT_DIR;' --path=$DIR)
		if [ $? -ne 0 ] ; then
			echo "[ERROR] Content dir not retrieved from WP. $WP_SITE :: $DIR"
			continue
		fi

		mkdir ${WP_CONTENT}/mu-plugins 2> /dev/null

		if grep -q 'new Endurance_Page_Cache' endurance-page-cache.php ; then
			if $(cp ./endurance-page-cache.php $WP_CONTENT/mu-plugins/endurance-page-cache.php) ; then 
				echo 'Page cache added to' $WP_CONTENT
			fi
		else
			echo "[ERROR] Invalid page cache file. $WP_SITE :: $DIR"
                        rm $WP_CONTENT/mu-plugins/endurance-page-cache.php 2>/dev/null
                        rm $WP_CONTENT/mu-plugins/endurnace-browser-cache.php 2>/dev/null
			continue

		fi

		if grep -q 'new Endurance_Browser_Cache' endurance-browser-cache.php ; then
			if $(cp ./endurance-browser-cache.php $WP_CONTENT/mu-plugins/endurance-browser-cache.php) ; then
				echo 'Browser cache added.'
			fi
		else
			echo "[ERROR] Invalid browser cache file. $WP_SITE :: $DIR"
                        rm $WP_CONTENT/mu-plugins/endurance-page-cache.php 2>/dev/null
                        rm $WP_CONTENT/mu-plugins/endurnace-browser-cache.php 2>/dev/null
                        continue

		fi

		$WP_COMMAND rewrite flush --hard --path=$DIR

		if [ $? -ne 0 ] ; then
			echo "[ERROR] htaccess was not flushed. Remove cache plugins. $WP_SITE :: $DIR"
			rm $WP_CONTENT/mu-plugins/endurance-page-cache.php
			rm $WP_CONTENT/mu-plugins/endurnace-browser-cache.php
			continue
		fi

		echo "[COMPLETE] EIG Cache installed on $WP_SITE :: $DIR"
	fi

done
rm ./endurance-page-cache.php
rm ./endurance-browser-cache.php