#!/bin/sh

# We store:
#   .tx/merge-base - changed whenever translations get merged

mergebase=`git log --pretty=oneline -1 .tx/merge-base | cut -d ' ' -f 1`

set -e

# First upload our current .pot.
mkdir -p translations/xonotic.commonpot/
cp common.pot translations/xonotic.commonpot/en..po
tx push -s

# Then pull the rest.
tx pull -f -a

for f in common.*.po; do
	lang=${f%.po}
	lang=${lang#common.}
	tcurfile=translations/xonotic.commonpot/$lang..po
	goldfile=translations/xonotic.commonpot/$lang..po.orig
	gnewfile=common.$lang.po
	if [ -f "$tcurfile" ]; then
		git show "$mergebase":"$gnewfile" > "$goldfile"
		msgcat -s --no-location --strict "$tcurfile" | grep -v "^#" > "$tcurfile.sorted"
		msgcat -s --no-location --strict "$goldfile" | grep -v "^#" > "$goldfile.sorted"
		msgcat -s --no-location --strict "$gnewfile" | grep -v "^#" > "$gnewfile.sorted"
		if diff -u "$goldfile.sorted" "$gnewfile.sorted" >/dev/null; then
			# no change on git, changed on tx only
			msgmerge -F -U "$tcurfile" common.pot
			cp "$tcurfile" "$gnewfile"
		else
			if ! diff -u "$goldfile.sorted" "$gnewfile.sorted" | patch "$tcurfile.sorted"; then
				while :; do
					vim -o "$tcurfile.sorted.rej" "$tcurfile.sorted"
					echo "OK?"
					read -r OK || exit 1
					[ x"$OK" != x"y" ] || break
				done
				rm -f "$tcurfile.sorted.rej"
			fi
			mv "$tcurfile.sorted" "$tcurfile"
			msgmerge -F -U "$tcurfile" common.pot
			cp "$tcurfile" "$gnewfile"
			rm "$goldfile.sorted"
			rm "$gnewfile.sorted"
			rm "$goldfile"
		fi
	else
		msgmerge -F -U "$gnewfile" common.pot
		cp "$gnewfile" "$tcurfile"
	fi
done
for f in translations/xonotic.commonpot/*..po; do
	lang=${f%..po}
	lang=${lang#translations/xonotic.commonpot/}
	[ x"$lang" != x"en" ] || continue
	tcurfile=translations/xonotic.commonpot/$lang..po
	gnewfile=common.$lang.po
	if ! [ -f "$gnewfile" ]; then
		touch "$gnewfile"
		git add "$gnewfile"
		cp "$tcurfile" "$gnewfile"
	fi
done
tx push -t
date > .tx/merge-base