#!/bin/bash

# Скрипт для тестирования запросов к ClickHouse.
# Из файлов *.sql в заданной директории, в алфавитном порядке, отправляются все запросы.
# Результаты сравниваются с эталонами.

QUERIES_DIR="./queries"
CLIENT_PROGRAM="clickhouse-client -n"


COLOR_RESET="\033[0m"
COLOR_WHITE="\033[1;37m"
COLOR_FAIL="\033[1;31m"
COLOR_UNKNOWN="\033[1;30m"
COLOR_OK="\033[1;32m"

MSG_FAIL="${COLOR_WHITE}[ ${COLOR_FAIL}FAIL${COLOR_WHITE} ]${COLOR_RESET}"
MSG_UNKNOWN="${COLOR_WHITE}[ ${COLOR_UNKNOWN}UNKNOWN${COLOR_WHITE} ]${COLOR_RESET}"
MSG_OK="${COLOR_WHITE}[ ${COLOR_OK}OK${COLOR_WHITE} ]${COLOR_RESET}"
MSG_GENERATED="${COLOR_WHITE}[ ${COLOR_UNKNOWN}GENERATED${COLOR_WHITE} ]${COLOR_RESET}"

ERRORS=0


if [ "$1" == "--generate" ]; then
	GENERATE=1
	shift
else
	GENERATE=0
fi


for dir in $(ls $QUERIES_DIR)
do
	tests_name=$(echo $dir | sed -E 's/^[0-9_]+//')

	echo
	echo "Running $tests_name tests."
	echo

	if [[ "$tests_name" =~ "stateful" && 0 -eq $(echo "EXISTS TABLE test.hits" | $CLIENT_PROGRAM) ]]; then
		echo "Won't run stateful tests because test data wasn't loaded. See README.txt."
		continue
	fi

	for query_file in $QUERIES_DIR/$dir/*.{sql,sh}
	do
		extension=$(echo $query_file | sed -r 's/^.+\.(sql|sh)$/\1/')
		test_name=$(basename $query_file .$extension)

		# нет файлов типа .sql или .sh
		if [[ "$test_name" == '*' ]]; then
			continue
		fi

		result_file=$QUERIES_DIR/$dir/$test_name.result
		error_file=$QUERIES_DIR/$dir/$test_name.error
		reference_file=$QUERIES_DIR/$dir/$test_name.reference
		diff_file=$QUERIES_DIR/$dir/$test_name.diff

		printf "%-60s" "$test_name: "

		if [[ "$extension" == "sql" ]]; then
			$CLIENT_PROGRAM < $query_file > $result_file 2> $error_file
			ret_code=$?
		else
			$query_file > $result_file 2> $error_file
			ret_code=$?
		fi

		if [ $ret_code -ne 0 ]; then
			ERRORS=$(($ERRORS + 1))
			echo -e "$MSG_FAIL - return code $ret_code"
			if [ -s "$error_file" ]; then
				cat $error_file
			fi
			# разорвано соединение с сервером
			if grep -q -E "Connection refused|Attempt to read after eof" $error_file; then
				exit 1;
			fi
		elif [ -s "$error_file" ]; then
			ERRORS=$(($ERRORS + 1))
			echo -e "$MSG_FAIL - having stderror:"
			cat $error_file
		elif grep -q "Exception" $result_file; then
			ERRORS=$(($ERRORS + 1))
			echo -e "$MSG_FAIL - having exception:"
			cat $result_file
		elif [ ! -e "$reference_file" ]; then
			# надо сгенерировать эталонный результат
			if [[ $GENERATE -eq 1 && ( -z "$1" || "$@" =~ "$test_name") ]]; then
				cp $result_file $reference_file
				echo -e "$MSG_GENERATED - no reference file"
			else
				echo -e "$MSG_UNKNOWN - no reference file (use --generate [test_name]... to create)"
			fi
		else
			diff $reference_file $result_file > $diff_file
			if [ -s "$diff_file" ]; then
				ERRORS=$(($ERRORS + 1))
				echo -e "$MSG_FAIL - result differs with reference:"
				cat $diff_file
			else
				echo -e "$MSG_OK"
				rm $error_file $result_file $diff_file
			fi
		fi
	done
done


echo

if [ $ERRORS -gt 0 ]; then
	echo -e "${COLOR_FAIL}Having $ERRORS errors!${COLOR_RESET}"
	exit 1
else
	echo -e "${COLOR_OK}All tests passed.${COLOR_RESET}"
	exit 0
fi