#!/bin/sh
#
# do a validation
#
# use "--help" for a list of possible actions
#

set -eu


# get the path of a configuration file - local configuration files
# supersede default files
# parameter: base name of the configuration file
function get_config_file()
{
	[ -e "$LOCALCONF_DIR/$1" ] && echo "$LOCALCONF_DIR/$1" && return 0
	[ -e "$DEFAULTCONF_DIR/$1" ] && echo "$DEFAULTCONF_DIR/$1" && return 0
	echo "configuration file ($1) not found!" >&2
	exit 1
}

# the base directory of your local development files
ROOT_DIR=$(dirname "$0")/..

# the template (default) configuration directory
DEFAULTCONF_DIR="$ROOT_DIR/etc-defaults.d"

# your local configuration directory (existing files supersede the defaults)
LOCALCONF_DIR="$ROOT_DIR/etc-local.d"


############# include local configuration ##############

if [ -e "$(get_config_file cbox-dev.conf)" ]
	then	source "$(get_config_file cbox-dev.conf)"
	else	echo "local cbox-dev.conf ($(get_config_file cbox-dev.conf)) does not exist!" >&2
		exit 1
  fi

#################### some functions ####################

function error_die()
{
	echo "$2" >&2
	exit $1
}


function do_single()
# Parameter: "test case dir" "output directory for results"
{
	local TESTNAME=$(basename $1)
	# replace IPs and ports in the curl-file by local settings
	sed "s/_HOST_IP_/$VALIDATE_HOST_IP/g; s/_HTTP_PORT_/$VALIDATE_HTTP_PORT/g; s/_HTTPS_PORT_/$VALIDATE_HTTPS_PORT/g" "$1/input.curl" | curl --insecure --silent --output "${2}/${TESTNAME}.html" --config -
	# there is no status in certain cases - e.g. for error 404
	if [ -e "${2}/${TESTNAME}.html" ] 
	  then	sed "1,/CBOX-STATUS-begin/d; /CBOX-STATUS-end/,\$d" "${2}/${TESTNAME}.html" >"${2}/${TESTNAME}.status"
		# the diff option "-B" is required, because the status output of 
		# the cryptobox.pl script contains some blank lines
		diff -NB "${2}/${TESTNAME}.status" "$1/output" >"${2}/${TESTNAME}.diff" || true
		rm "${2}/${TESTNAME}.status"
	 fi
	cp "$1/description" "${2}/${TESTNAME}.desc"
}


function do_series()
# parameter: name of the test case
{
	[ -d "$VALIDATE_REPORT_DIR/$1" ] && rm -r "$VALIDATE_REPORT_DIR/$1"
	mkdir -p "$VALIDATE_REPORT_DIR/$1"
	find "$VALIDATE_TEST_CASES_DIR/$1" -type d -maxdepth 1 -mindepth 1 | grep -v "/\.[^/]*$" | sort | while read a
		do	do_single "$a" "$VALIDATE_REPORT_DIR/$1"
	  done
	create_summary "$VALIDATE_REPORT_DIR/$1" >"$VALIDATE_REPORT_DIR/$1/summary.html"
	tar czf "$VALIDATE_REPORT_DIR/${1}-results.tar.gz" -C "$VALIDATE_REPORT_DIR" "$1"
	#echo "$VALIDATE_REPORT_DIR/${1}-results.tar.gz"
}


create_summary()
# parameter: directory of results
{
	cat "$VALIDATE_SUMMARY_TEMPLATE_DIR/header"
	find "$1" -type f -name \*.desc -maxdepth 1 | sort | while read a
	    do	TESTNAME=$(basename ${a%.desc})
		TESTDESCRIPTION=$(cat $a)
	    	sed "s#_TESTNAME_#$TESTNAME#g; s/_TESTDESCRIPTION_/$TESTDESCRIPTION/" "$VALIDATE_SUMMARY_TEMPLATE_DIR/single_header"
		local DIFF_FILE=${a%.desc}.diff
		if [ -s "$DIFF_FILE" ]
		   then	cat "$VALIDATE_SUMMARY_TEMPLATE_DIR/result-error"
			sed 's#$#<br/>#' "$DIFF_FILE"
		   else	cat "$VALIDATE_SUMMARY_TEMPLATE_DIR/result-ok"
			echo "no differences found"
			# remove empty diff
			[ -e "$DIFF_FILE" ] && rm "$DIFF_FILE"
		 fi
		cat "$VALIDATE_SUMMARY_TEMPLATE_DIR/single_footer"
		# remove description file
		rm "$a"
	  done
	cat "$VALIDATE_SUMMARY_TEMPLATE_DIR/footer"
}


import_style()
# get the stylesheet file and images
# change the stylesheet link
{
	[ -d "$VALIDATE_REPORT_DIR/cryptobox-img" ] && rm -r "$VALIDATE_REPORT_DIR/cryptobox-img"
	mkdir -p "$VALIDATE_REPORT_DIR/cryptobox-img"
	[ -e "$VALIDATE_REPORT_DIR/cryptobox.css" ] && rm "$VALIDATE_REPORT_DIR/cryptobox.css"
	wget -q -O "$VALIDATE_REPORT_DIR/cryptobox.css" http://$VALIDATE_HOST_IP:$VALIDATE_HTTP_PORT/cryptobox.css
	# extract image file names
	grep "url(/cryptobox-img/" "$VALIDATE_REPORT_DIR/cryptobox.css" | sed 's#^.*url(/cryptobox-img/\(.*\)).*$#\1#' | while read a
		do	wget -q -O "$VALIDATE_REPORT_DIR/cryptobox-img/$a" "http://$VALIDATE_HOST_IP:$VALIDATE_HTTP_PORT/cryptobox-img/$a"
	  done
	
	# change the stylesheet link in every html file in REPORT_DIR
	find "$VALIDATE_REPORT_DIR" -type f -name \*.html | while read a
		do	sed -i '#link rel="stylesheet"#s#href="/cryptobox.css"#href="../cryptobox.css"#g' "$a"
	  done
}


ACTION="--help"
[ $# -gt 0 ] && ACTION=$1

case "$ACTION" in
	list )
		find "$VALIDATE_TEST_CASES_DIR" -type d -maxdepth 1 -mindepth 1 | grep -v "/\.[^/]*$" | sort | while read a
			do	echo $(basename "$a")
		  done
		;;
	check )
		[ $# -ne 2 ] && error_die 1 "Syntax: $(basename $0) check NAME"
		CASE_DIR="$VALIDATE_TEST_CASES_DIR/$2"
		[ ! -d "$VALIDATE_CASE_DIR" ] && error_die 2 "the test case was not found ($VALIDATE_CASE_DIR)!"
		do_series "$2"
		import_style
		;;
	check_all )
		"$0" list | sort | while read a
		    do	echo -n "Validating $a ..."
		    	"$0" check "$a"
			echo
			echo -n "Waiting 20 seconds ..."
			sleep 20
			echo
		  done
		;;
	* )
		echo "Syntax of $(basename $0)"
		echo -e "\t list \t\t - show a list of available test cases"
		echo -e "\t check NAME \t - execute a test case"
		echo -e "\t check_all \t - execute all test cases"
		echo -e "\t help \t\t - this syntax information"
		echo
		;;
  esac