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

set -eu

CB_ROOT_DIR=$(dirname $0)/..
TEST_CASES_DIR=$CB_ROOT_DIR/validation/test-cases
# TODO: take care, that this file exists! (it is created during "upload", "diff" or "merge")
HOST_IP=192.168.0.24
REPORT_DIR=/tmp/cryptobox-validation-$$
REPORT_DIR=$CB_ROOT_DIR/validation/report
SUMMARY_TEMPLATE_DIR=$CB_ROOT_DIR/validation/templates


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


function do_single()
# Parameter: "test case dir" "output directory for results"
{
	local TESTNAME=$(basename $1)
	curl --insecure --silent --output "${2}/${TESTNAME}.html" --config "$1/input.curl"
	# there is no status in certain cases - e.g. for error 404
	if [ -e "${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 "$REPORT_DIR/$1" ] && rm -r "$REPORT_DIR/$1"
	mkdir -p "$REPORT_DIR/$1"
	find "$TEST_CASES_DIR/$1" -type d -maxdepth 1 -mindepth 1 | grep -v "/\.[^/]*$" | sort | while read a
		do	do_single "$a" "$REPORT_DIR/$1"
	  done
	create_summary "$REPORT_DIR/$1" >"$REPORT_DIR/$1/summary.html"
	tar czf "$REPORT_DIR/${1}-results.tar.gz" -C "$REPORT_DIR" "$1"
	#echo "$REPORT_DIR/${1}-results.tar.gz"
}


create_summary()
# parameter: directory of results
{
	cat "$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_/$TESTDESCRIPTION/" "$SUMMARY_TEMPLATE_DIR/single_header"
		local DIFF_FILE=${a%.desc}.diff
		if [ -s "$DIFF_FILE" ]
		   then	cat "$SUMMARY_TEMPLATE_DIR/result-error"
			sed 's#$#<br/>#' "$DIFF_FILE"
		   else	cat "$SUMMARY_TEMPLATE_DIR/result-ok"
			echo "no differences found"
			# remove empty diff
			[ -e "$DIFF_FILE" ] && rm "$DIFF_FILE"
		 fi
		cat "$SUMMARY_TEMPLATE_DIR/single_footer"
		# remove description file
		rm "$a"
	  done
	cat "$SUMMARY_TEMPLATE_DIR/footer"
}


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


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

case "$ACTION" in
	list )
		find "$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 $0) check NAME"
		CASE_DIR="$TEST_CASES_DIR/$2"
		[ ! -d "$CASE_DIR" ] && error_die 2 "the test case was not found ($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