THRIFT = $(or $(shell which thrift), $(error "`thrift' executable missing"))
THRIFT_LANGUAGES = erlang java
THRIFT_OPTIONS_erlang = scoped_typenames
THRIFT_OPTIONS_java = fullcamel
THRIFT_OPTIONS_html = standalone

UTILS_PATH := build_utils
TEMPLATES_PATH := .


# Name of the service
SERVICE_NAME := damsel
# Service image default tag
SERVICE_IMAGE_TAG ?= $(shell git rev-parse HEAD)
# The tag for service image to be pushed with
SERVICE_IMAGE_PUSH_TAG ?= $(SERVICE_IMAGE_TAG)


BUILD_IMAGE_TAG := 4536c31941b9c27c134e8daf0fd18848809219c9

PROTODIR = proto
FILES = $(wildcard $(PROTODIR)/*.thrift)
DESTDIR = _gen
RELDIR = _release

CALL_W_CONTAINER := \
	all compile doc clean release-erlang

all: compile

-include $(UTILS_PATH)/make_lib/utils_container.mk

define generate
	$(THRIFT) -r -strict --gen $(1):$(THRIFT_OPTIONS_$(1)) -out $(2) $(3)
endef

define targets
	$(patsubst %, $(DESTDIR)/$(1)/%, $(FILES))
endef

CUTLINE = $(shell printf '=%.0s' $$(seq 1 80))

.PHONY: all compile doc clean

LANGUAGE_TARGETS = $(foreach lang, $(THRIFT_LANGUAGES), verify-$(lang))

compile: $(LANGUAGE_TARGETS)
	@echo "Ok"

verify-%: $(DESTDIR)
	@echo "Verifying '$*' ..."
	@echo $(CUTLINE)
	@$(MAKE) LANGUAGE=$* $(call targets,$*)
	@echo

TARGETS = $(call targets,$(LANGUAGE))

$(TARGETS):: $(DESTDIR)/$(LANGUAGE)/%: %
	mkdir -p $@
	$(call generate,$(LANGUAGE),$@,$<)

clean::
	rm -rf $(DESTDIR)

REPODIR = $(abspath $(RELDIR)/$*)
DOCKER_RUN_OPTS := -e BRANCH_NAME

release-%: $(RELDIR)
	@echo "Making '$*' release ..."
	@echo $(CUTLINE)
	@rm -rf $(REPODIR)
	$(MAKE) LANGUAGE=$* DESTDIR=$(REPODIR) build-release

clean::
	rm -rf $(RELDIR)

$(DESTDIR):
$(RELDIR):
	@mkdir -p $@

# Docs

DOCDIR = doc
DOCTARGETS = $(patsubst %.thrift, $(DOCDIR)/%.html, $(FILES))

doc: $(DOCTARGETS)

$(DOCTARGETS): $(DOCDIR)/%.html: %.thrift
	mkdir -p $(dir $@)
	$(call generate,html,$(dir $@),$<)

# Erlang

ERLC ?= erlc

ifeq ($(LANGUAGE), erlang)
ifneq ($(shell which $(ERLC)),)

$(TARGETS):: $(DESTDIR)/$(LANGUAGE)/%: %
	$(ERLC) -v -I$@ -o$@ $(shell find $@ -name "*.erl")

build-release:
	@make THRIFT="$(THRIFT)" FILES="$(abspath $(FILES))" PROTO="$(abspath $(PROTODIR))" -C build/erlang release

endif
endif

include $(UTILS_PATH)/make_lib/java_proto.mk