#
# Definition of common Makefile tasks for PO merging and MO generation.
#
# Run make help to list available targets
#

POTFILE = $(DOMAIN).pot
MOFILE = $(DOMAIN).mo
POFILES = $(shell find . -name '$(DOMAIN).po')
MOFILES = $(patsubst %.po,%.mo,$(POFILES))
POXFILES = $(patsubst %.po,%.pox,$(POFILES))
EDITFILES = $(patsubst %.po,%.edit.po,$(POFILES))
TIMESTAMPFILES = $(patsubst %.po,%.po.time_stamp,$(POFILES))

%.mo: %.po
	mkdir -p $(shell dirname $@)/LC_MESSAGES
	msgfmt -o $(shell dirname $@)/LC_MESSAGES/$(MOFILE) $<

.PHONY: all-mo
all-mo: $(MOFILES) ## Generate MO files from PO files (default)

# Check for malformed strings
%.pox: %.po
	@command -v pofilter >/dev/null 2>&1 || { echo "Command pofilter not found. Make sure you have translate-toolkit installed." >&2; exit 1; }
	msgfmt -c $<
	pofilter --nofuzzy -t variables -t blank -t urls -t emails -t long -t newlines \
		-t endwhitespace -t endpunc -t puncspacing -t options -t printf -t validchars --gnome $< > $@;
	cat $@
	! grep -q msgid $@

.PHONY: check
check: $(POXFILES) ## Check translations using translate-tool, run make with -k to skip errors and execute for all languages

.PHONY: uniq-po
uniq-po: ## Unify duplicate translations in .po files
	for f in $(shell find ./ -name "*.po") ; do \
		msguniq $$f -o $$f ; \
	done

%.edit.po:
	touch $@

# Pull translaions from transifex
.PHONY: tx-pull
tx-pull: $(EDITFILES)
	@command -v tx >/dev/null 2>&1 || { echo "Command tx not found. Make sure you have transifex-client installed and configured." >&2; exit 1; }
	tx pull -f
	for f in $(EDITFILES); do \
		sed -i 's/^\("Project-Id-Version: \).*$$/\1$(DOMAIN) $(VERSION)\\n"/' $$f; \
	done

# Merge .edit.po into .po
.PHONY: update-po
update-po:
	for f in $(EDITFILES); do \
		msgcat --use-first --no-location $$f $${f//.edit/} > $${f//.edit/}; \
	done

# Extract strings and update the .pot, prepare .edit.po files
.PHONY: extract-strings
extract-strings:
	bundle exec rake gettext:find

.PHONY: tx-update
tx-update: extract-strings tx-pull update-po $(MOFILES) ## Download and merge translations from Transifex
	git add ../locale
	git commit -m "i18n - extracting new, pulling from tx"
	@echo Changes commited!

.PHONY: clean
clean: ## Clean everything, removes *.edit.po, *.po.timestamp and *.pox files
	rm -f $(EDITFILES) $(TIMESTAMPFILES) $(POXFILES)

.PHONY: help
help: ## This help message
	@echo -e "$$(grep -hE '^\S+:.*##' $(MAKEFILE_LIST) | sed -e 's/:.*##\s*/:/' -e 's/^\(.\+\):\(.*\)/\\x1b[36m\1\\x1b[m:\2/' | column -c2 -t -s :)"