.PHONY: check-tools build-image build sign clean veryclean keyfile prepare-all clean-all

# If you run:
#   docker run --rm --name squid adricu/alpine-squid
# and set DOCKER_SQUID_CONTAINER=squid
# then you can avoid repeated downloads of a lot of alpine packages.
#
DOCKER_SQUID_CONTAINER?=squid
ifeq ($(DOCKER_SQUID_CONTAINER),)
DOCKER_SQUID_OPTS=
else
DOCKER_SQUID_OPTS=--link $(DOCKER_SQUID_CONTAINER):squid \
	-e http_proxy=http://squid:3128/ \
	-e https_proxy=http://squid:3128/
DOCKER_SQUID_IP=$(shell docker inspect squid | preserves-tool convert -o unquoted --select '/ . "NetworkSettings" . "IPAddress"')
HTTP_PROXY=http://$(DOCKER_SQUID_IP):3128/
endif

export ARCH?=aarch64
DOCKER_ARCH=$(shell ./map_docker_arch.sh $(ARCH))
KEYFILE?=synit-apk-key
UID:=$(shell id -u)
GID:=$(shell id -g)
BUILD_USER?=build

DOCKER_CMD=\
	mkdir -p $(CURDIR)/distfiles && \
	docker run --platform linux/$(DOCKER_ARCH) -it --rm \
		$(DOCKER_SQUID_OPTS) \
		-v `pwd`:/data \
		-v `pwd`/$(KEYFILE):/home/$(BUILD_USER)/.abuild/$(KEYFILE) \
		-v $(CURDIR)/distfiles:/var/cache/distfiles \
		synit-build:$(ARCH)

DOCKER_BUILD_ARGS=\
	--build-arg http_proxy=$(HTTP_PROXY) \
	--build-arg http_proxy_hostname=$(DOCKER_SQUID_IP) \
	--build-arg ALPINE_ARCH=$(ARCH) \
	--build-arg DOCKER_ARCH=$(DOCKER_ARCH) \
	--build-arg KEYFILE=$(KEYFILE) \
	--build-arg UID=$(UID) \
	--build-arg BUILD_USER=$(BUILD_USER)

build: build-image prepare-all
	$(DOCKER_CMD) make -f Makefile.internal $@ KEYFILE=$(KEYFILE)
sign: build-image
	$(DOCKER_CMD) make -f Makefile.internal $@ KEYFILE=$(KEYFILE)
%.apk: build-image %.prepare
	$(DOCKER_CMD) make -f Makefile.internal $@ KEYFILE=$(KEYFILE)
%.checksum: build-image %.prepare
	$(DOCKER_CMD) make -f Makefile.internal $@ KEYFILE=$(KEYFILE)
%.buildshell: build-image %.prepare
	$(DOCKER_CMD) make -f Makefile.internal $@ KEYFILE=$(KEYFILE)

prepare-all: $(patsubst %,%.prepare,$(file < package-list))

%.prepare:
	@if [ -f packages/$*/Makefile.external ]; then \
		$(MAKE) -C packages/$* -f Makefile.external prepare; fi

clean-all: $(patsubst %,%.clean,$(file < package-list))

%.clean:
	@if [ -f packages/$*/Makefile.external ]; then \
		$(MAKE) -C packages/$* -f Makefile.external clean; fi

clean: clean-all
	rm -f .build-image.*
	-docker rmi synit-build:aarch64
	-docker rmi synit-build:x86_64
	-docker rmi synit-build:armv7
	-docker rmi synit-build-rust:aarch64
	-docker rmi synit-build-rust:x86_64
	-docker rmi synit-build-rust:armv7

veryclean: clean
	rm -rf target

build-image: check-tools .build-image.$(ARCH)

.build-image.$(ARCH): $(KEYFILE)
	docker buildx build \
		--progress plain \
		$(DOCKER_BUILD_ARGS) \
		--platform=linux/$(DOCKER_ARCH) \
		-t synit-build:$(ARCH) .
	touch $@

.build-image.rust.$(ARCH): .build-image.$(ARCH)
	docker buildx build \
		--progress plain \
		$(DOCKER_BUILD_ARGS) \
		--platform=linux/$(DOCKER_ARCH) \
		-t synit-build-rust:$(ARCH) -f Dockerfile.rust .
	touch $@

keyfile: $(KEYFILE)

$(KEYFILE):
	docker run -it --rm \
		-v `pwd`:/data \
		alpine \
		sh -c "apk add abuild && echo /data/$(KEYFILE) | abuild-keygen && chown $(UID):$(GID) /data/$(KEYFILE)*"

check-tools:
	@rm -f .versions
	@preserves-tool --version >> .versions
	@git --version >> .versions
	@ssh -V >> .versions 2>&1
	@rsync --version | head -1 >> .versions
	@python3 --version >> .versions
	@rustc --version >> .versions
	@cargo --version >> .versions
	@make --version | head -1 >> .versions
	@docker --version >> .versions