#!/bin/bash -
#
# Tool which tries to find outdated translations in the engine strings (*.txt) using hg blame.
# Note this is only a heuristic; the output might not be 100% accurate.
# Strings which this tool lists MIGHT be outdated, so you might want to re-translate them, if needed.
# Run this in the tools/ directory.
#
# SYNTAX:
#
# ./find_outdated_engine_translations.sh <LANGUAGE>
#
# <LANGUAGE>: Language code of the language to check
#

cd ../share/hedgewars/Data/Locale

BLAMELANG=$1;

if [ -z $BLAMELANG ]
then
	echo "No language specified.";
	exit;
fi;
BLAMELANGFILE="$BLAMELANG.txt";

TEMP_EN=$(mktemp);
TEMP_LANG=$(mktemp);

hg blame en.txt | grep -P "^\s*\d+:\s+0[013-6]:" > $TEMP_EN;

hg blame $BLAMELANGFILE | grep -P "^\s*\d+:\s+0[013-6]:" > $TEMP_LANG;

cat $TEMP_EN | while read f;
do
	REV=$(echo $f | sed 's/:.*//');
	CODE=$(echo $f | sed 's/^[0-9]\+:\s\+//;s/=.*//');
	OTHER=$(grep -P "^\s*\d+:\s+${CODE}" $TEMP_LANG);
	if (($?==0));
	then
		OTHER_REV=$(echo $OTHER | sed 's/:.*//');
		if (($REV>$OTHER_REV));
		then
			TEXT=$(echo $f | sed 's/^\s*[0-9]\+:\s*[0-9]\+:[0-9]\+=//');
			OLD_TEXT=$(hg grep --all -r "1:$OTHER_REV" "$CODE" en.txt | tail -n1 | sed 's/.*en.txt:[0-9]\+:[+-]:[0-9]\+:[0-9]\+=//;s/^M//');
			if [ "$TEXT" != "$OLD_TEXT" ];
			then
				if [ -z $COLUMNS ];
				then
					printf '━%.0s' $(seq 74);
					echo "";
				else
					printf '━%.0s' $(seq $COLUMNS);
				fi;
				echo "$TEXT ← Current English";
				echo "$OLD_TEXT ← English at time of translation";
				echo "$(echo $OTHER | sed 's/^\s*[0-9]\+:\s*[0-9]\{2\}:[0-9]\{2\}=//') ← current translation";
			fi;
		fi;
	fi;
done

rm $TEMP_EN $TEMP_LANG