#!/bin/sh
#set -x
#initial env for nginx server
#
#defined in package.sysapihttpd.Makefile
NGINX_BIN=/usr/sbin/sysapihttpd
ROMCONFDIR='/etc/sysapihttpd'
NGINXCACHEDIR='/userdisk/sysapihttpd'
#
NGINXTMPDIR='/tmp/sysapihttpd/'
#
RUNCONFDIR='/tmp/sysapihttpdconf'
PID_FILE='/var/run/sysapihttpd.pid'
UPLOAD_DIR='/tmp/uploadfiles/'

export NGINXDAEMONOFF='no'
#log level: debug | info | notice | warn | error | crit
export NGINXERRLOGLEVEL='notice'
#
. /lib/lib.scripthelper.sh
RUNCONFDIR=$(strippath $RUNCONFDIR)
NGINXRUNCONF=$(strippath ${RUNCONFDIR}/sysapihttpd.conf)

#sed error_log to stderr if evn NGINXDAEMONOFF exist
#sed daemon to off if evn NGINXDAEMONOFF exist
error_log_init() {
	#return 0 for ok
	if [ "$NGINXDAEMONOFF" != 'yes' ]
		then
		return 0
	fi
	#
	grep -iq '^daemon off' $NGINXRUNCONF
	if [ $? -ne 0 ]
		then
		sed -i -e 's/^daemon on/daemon off/g' $NGINXRUNCONF
		if [ $? -eq 0 ]
			then
			echo "INFO: set daemon off ok."
		else
			echo "ERROR: set daemon off failed, sysapihttpd no started."
			return 1
		fi
	fi
	if [ -z "$NGINXERRLOGLEVEL" ]
		then
		NGINXERRLOGLEVEL='notice'
	fi
	case "$NGINXERRLOGLEVEL" in
		notice|warn|error|crit)
			echo "INFO: error log level: $NGINXERRLOGLEVEL"
			;;
		debug|info)
			echo "WARNING: error log level is for debug: $NGINXERRLOGLEVEL"
			;;
		*)
			echo "WARNING: unknow error log level: $NGINXERRLOGLEVEL"
			NGINXERRLOGLEVEL='notice'
			echo "INFO: error log level: $NGINXERRLOGLEVEL"
			;;
	esac
	#
	grep -iq "^error_log stderr $NGINXERRLOGLEVEL" $NGINXRUNCONF
	if [ $? -ne 0 ]
		then
		#
		sed -i -e "s/^error_log.*/error_log stderr $NGINXERRLOGLEVEL;/g" $NGINXRUNCONF
		if [ $? -eq 0 ]
			then
			echo "INFO: set errorlog to stderr ok."
		else
			echo "ERROR: set errorlog to stderr failed, sysapihttpd no started."
			return 1
		fi
	fi
	return 0
}
#
clean_mount(){
	local mntdir
	mntdir="$1"
	test -z "$mntdir" && return 1
	for aaa in 1 2 3 4 5 6 7 8 9 0
	do
		mount | grep -q " $mntdir "
		test $? -ne 0 && break
		umount -f -r "$mntdir"
		sleep 1
	done
	mount | grep -q " $mntdir "
	if [ $? -eq 0 ]
		then
		return 1
	else
		return 0
	fi
}

init_web_root(){
	local rootdir rootinfo exitcode
	exitcode=0
	rootdir="$1"
	rootinfo="$2"
	test -z "$rootdir" && return 1
	test -z "$rootinfo" && rootinfo="static"
	mkdir -p ${rootdir}/ || exitcode=1
	test -f ${rootdir}/favicon.ico || touch ${rootdir}/favicon.ico || exitcode=1
	test -f ${rootdir}/index.html || echo "<h1>sysapihttpd ${rootinfo} server</h1>" > ${rootdir}/index.html || exitcode=1
	test -f ${rootdir}/50x.html || echo "<h1>sysapihttpd ${rootinfo} server, file no found or internal error</h1>" > ${rootdir}/50x.html || exitcode=1
	if [ $exitcode -ne 0 ]
		then
		echo "WARNING: web root $rootinfo($rootdir) initial failed."
	fi
	return $exitcode
}

init_nginx_dir(){
	local datadir exitcode
	datadir="$1"
	test -z "$datadir" && return 1
	exitcode=0
	mkdir -p ${datadir} 2>&1 || exitcode=1
	mkdir -p ${datadir}/temp || exitcode=1
	mkdir -p ${datadir}/cache || exitcode=1
	mkdir -p ${datadir}/log || exitcode=1
	mkdir -p ${datadir}/body || exitcode=1
	mkdir -p ${datadir}/proxy || exitcode=1
	mkdir -p ${datadir}/fastcgi || exitcode=1
	mkdir -p ${datadir}/run || exitcode=1
	mkdir -p ${datadir}/lock || exitcode=1
	if [ $exitcode -ne 0 ]
		then
		echo "WARNING: data root $datadir initial failed."
	fi
	return $exitcode
}

env_init(){
	local exitcode
	NGINXTMPDIR=$(slaprtrim $NGINXTMPDIR)
	NGINXCACHEDIR=$(slaprtrim $NGINXCACHEDIR)

	mkdir -p $NGINXCACHEDIR >/dev/null 2>&1

	elog "INFO: main conf: $NGINXRUNCONF"
	if ! mkdir -p $RUNCONFDIR; then
	    elog "ERROR: mkdir -p $RUNCONFDIR failed: $(mkdir -p $RUNCONFDIR 2>&1)"
	    exit 1
	fi
	#conf sync
	rm -rf ${RUNCONFDIR} && mkdir -p ${RUNCONFDIR} && cp -a ${ROMCONFDIR}/* ${RUNCONFDIR}/
	if [ $? -ne 0 ]; then
	    elog "ERROR: sync configure failed: ${ROMCONFDIR} => ${RUNCONFDIR}"
	    return 1
	fi
	init_nginx_dir "$NGINXTMPDIR" || return 1
	#echo "DEBUG: NGINX_CACHE=$NGINX_CACHE, NGINX_AUTOCACHE=$NGINX_AUTOCACHE"
	cachedirname=$(dirname $NGINXCACHEDIR)
	cachedev=$(mount | grep " on $NGINXCACHEDIR " | tail -n 1 | awk '{print $1}')
	test -z "$cachedev" && cachedev=$(mount | grep " on $cachedirname " | tail -n 1 | awk '{print $1}')
	if [ -z "$cachedev" ]
	then
		echo "INFO: no standalone file system for $NGINXCACHEDIR, using ram fs."
		if ! mount --bind ${NGINXTMPDIR}/ ${NGINXCACHEDIR}/; then
		    echo "ERROR: mount --bind ${NGINXTMPDIR}/ ${NGINXCACHEDIR}/ failed."
		    return 1
		fi
	fi
	#
	init_nginx_dir "$NGINXCACHEDIR"
	#
	exitcode=0
	#initial in loop
	rootlist='preload inforoot luaroot'
	for oneroot in $rootlist
	do
	    [ -f "${NGINXCACHEDIR}/$oneroot" ] || init_web_root "${NGINXCACHEDIR}/$oneroot" "$oneroot" || exitcode=$?
	done
	if [ $exitcode -ne 0 ]
		then
		echo "ERROR: initial web root directory failed."
		return 1
	fi

	# recreate upload dir
	rm -rf /tmp/uploadfiles/ && mkdir -p /tmp/uploadfiles/ && chmod 777 /tmp/uploadfiles/
	chmod -R 777 /userdisk/sysapihttpd
	return $exitcode
}

gen_config() {
    local rrd=$(matool --method rr_data)
    local did=$(matool --method deviceID)
    local rr_path='/tmp/rr'
    local de_path="/tmp/de_zone_data"
    [ -d "$rr_path" ] || mkdir -p "$rr_path"
    local rr_body="$rr_path/xqsystmp"
    sed -i -e "s/\"RR_D_STUB\"/\"$rrd\"/g
     s/\"DEV_ID_STUB\"/\"$did\"/g
     s#\"DE_PATH_STUB\"#\"$de_path\"#g
     s#\"RR_PATH_STUB\"#\"$rr_body\"#g
     " $NGINXRUNCONF
}

if ! env_init; then
    elog "ERROR: env_init failed."
    exit 1
fi

if ! error_log_init; then
    elog "ERROR: error_log_init failed."
    exit 1
fi
# replace variable value
if ! gen_config; then
    elog "ERROR: gen config error."
    exit 1
fi
if ! $NGINX_BIN -c ${NGINXRUNCONF} -t &> /tmp/nginx_check.log; then
    elog "ERROR: config check error."
    exit 1
fi