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#!/bin/sh

set -e
set -u

EXCLUDE_LANGS='fr pt_BR'
TAILS_PO_DIR='po'
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
TOR_TRANSLATION_REMOTE='https://git.torproject.org/translation.git'
TOR_TRANSLATION_DIR="$SCRIPT_DIR/tmp/tor-translation"
GIT_IN_TOR_TRANSLATION_DIR="git \
	--work-tree=\"$TOR_TRANSLATION_DIR\" \
	--git-dir=\"$TOR_TRANSLATION_DIR/.git\""

### External libraries
. "$SCRIPT_DIR/config/chroot_local-includes/usr/local/lib/tails-shell-library/po.sh"

lang_is_excluded () {
	local lang="$1"
	echo -n "$EXCLUDE_LANGS" | grep -qs -w "$lang"
}

# Detect which project is in current folder,
# and set parameters accordingly
if [ -f 'po/tails.pot' ]; then
	BRANCH='tails-misc_completed'
	AFTER_IMPORT='intltool_update_po $(po_languages)'
elif [ -f 'po/tails-greeter.pot' ]; then
	BRANCH='tails-greeter_completed'
	AFTER_IMPORT='./setup.py build_i18n'
elif [ -f 'po/liveusb-creator.pot' ]; then
	BRANCH='liveusb-creator_completed'
	AFTER_IMPORT='make pot && rename -f "s,\.new\$,," po/*.new'
elif [ -f 'po/tails-persistence-setup.pot' ]; then
	BRANCH='tails-persistence-setup_completed'
	AFTER_IMPORT='make -C po pot && make -C po update-po'
elif [ -f 'po/whisperback.pot' ]; then
	BRANCH='whisperback_completed'
	AFTER_IMPORT=''
else
	echo "Current folder is not a project known to this script!"
	exit 1
fi

# Clone or update the translation repository
if [ -d "$TOR_TRANSLATION_DIR" ]; then
	eval "$GIT_IN_TOR_TRANSLATION_DIR fetch origin"
else
	mkdir -p "$SCRIPT_DIR/tmp"
	git clone "$TOR_TRANSLATION_REMOTE" "$TOR_TRANSLATION_DIR"
fi

# Checkout the correct branch
eval "$GIT_IN_TOR_TRANSLATION_DIR checkout \"$BRANCH\""
eval "$GIT_IN_TOR_TRANSLATION_DIR reset --hard \"origin/$BRANCH\""

# For each completely translated language, merge it,
# unless it is translated outside Transifex
find "$TOR_TRANSLATION_DIR" -name '*.po' | while read po_file; do
	lang=$(basename "$po_file" | tr - _ | sed 's/\.po$//')

	if ! lang_is_excluded "$lang"; then
		echo "Importing translation for $lang..."
		cp "$po_file" "$TAILS_PO_DIR"
	fi
done

# Update PO files
if [ -n "$AFTER_IMPORT" ]; then
	eval "$AFTER_IMPORT"
fi