DESTDIR:=
prefix:=$(DESTDIR)/opt
REBAR3:=./rebar3
SERVICE:=$(DESTDIR)/etc/systemd/system/mtproto-proxy.service
EPMD_SERVICE:=$(DESTDIR)/etc/systemd/system/epmd.service
LOGDIR:=$(DESTDIR)/var/log/mtproto-proxy
USER:=mtproto-proxy

# ROLE selects which config templates are used.
# Values: both (default, single server), front (domestic), back (foreign).
# For split mode: run `make init-config ROLE=front` / `make init-config ROLE=back`
# on each server, edit the resulting config files, then run `make ROLE=front` etc.
ROLE ?= both

ifeq ($(ROLE),front)
SYS_CONFIG_SRC := config/sys.config.front.example
VM_ARGS_SRC    := config/vm.args.front.example
else ifeq ($(ROLE),back)
SYS_CONFIG_SRC := config/sys.config.back.example
VM_ARGS_SRC    := config/vm.args.back.example
else
SYS_CONFIG_SRC := config/sys.config.example
VM_ARGS_SRC    := config/vm.args.example
endif


all: config/prod-sys.config config/prod-vm.args
	$(REBAR3) as prod release

.PHONY: test
test:
	$(REBAR3) xref
	$(REBAR3) eunit -c
	$(REBAR3) ct -c
	$(REBAR3) proper -c -n 50
	$(REBAR3) dialyzer
	$(REBAR3) cover -v

config/prod-sys.config: $(SYS_CONFIG_SRC)
	[ -f $@ ] && diff -u $@ $^ || true
	cp -i -b $^ $@
config/prod-vm.args: $(VM_ARGS_SRC)
	[ -f $@ ] && diff -u $@ $^ || true
	cp -i -b $^ $@
	@IP=$(shell curl -s -4 -m 10 http://ip.seriyps.com  || curl -s -4 -m 10 https://digitalresistance.dog/myIp) \
		&& sed -i s/@0\.0\.0\.0/@$${IP}/ $@

.PHONY: init-config
init-config:
	cp $(SYS_CONFIG_SRC) config/prod-sys.config
	cp $(VM_ARGS_SRC) config/prod-vm.args
	@IP=$$(curl -s -4 -m 10 http://ip.seriyps.com || curl -s -4 -m 10 https://digitalresistance.dog/myIp) \
		&& sed -i s/@0\.0\.0\.0/@$${IP}/ config/prod-vm.args; true
	@echo ""
	@echo "Config created from ROLE=$(ROLE) templates."
	@echo "Edit config/prod-sys.config and config/prod-vm.args, then run: make [ROLE=$(ROLE)]"

user:
	sudo useradd -r $(USER) || true

$(LOGDIR):
	mkdir -p $(LOGDIR)/
	chown $(USER) $(LOGDIR)/


install: user $(LOGDIR)
	mkdir -p $(prefix)
	cp -r _build/prod/rel/mtp_proxy $(prefix)/
	mkdir -p $(prefix)/mtp_proxy/log/
	chmod 777 $(prefix)/mtp_proxy/log/
	install -D config/mtproto-proxy.service $(SERVICE)
# If there is no "epmd" service, install one
	if [ -z "`systemctl show -p FragmentPath epmd | cut -d = -f 2`" ]; then \
	    install -D config/epmd.service $(EPMD_SERVICE); \
	fi
	systemctl daemon-reload

.PHONY: update-sysconfig
update-sysconfig: config/prod-sys.config $(prefix)/mtp_proxy
	REL_VSN=$(shell cut -d " " -f 2 $(prefix)/mtp_proxy/releases/start_erl.data) && \
		install -m 644 config/prod-sys.config "$(prefix)/mtp_proxy/releases/$${REL_VSN}/sys.config"

uninstall:
# TODO: ensure service is stopped
	rm $(SERVICE)
	rm -r $(prefix)/mtp_proxy/
	systemctl daemon-reload