TARGETS := $(patsubst ./%/,%,$(dir $(shell find -L . -maxdepth 2 -mindepth 2 -type f -and -name Makefile)))
.PHONY: all
all: login $(TARGETS)

include config.mk
$(foreach target,$(TARGETS),$(eval include $(target)/Makefile))

container_image_name = $(REGISTRY_DOMAIN)/$(REGISTRY_USER)/$(CONTAINER_NAME_PREFIX)$(target)
app_version = $(shell head -n 1 $(target)/version)
remove_last_version_part = $(shell a="$(1)"; [ "$(1)" = "$${a%.*}" ] && echo "" || echo "$${a%.*}")
all_versions = $(if $(1),$(1) $(call all_versions,$(call remove_last_version_part,$(1))))
tag_alpine_version_parts := alpine $(addprefix alpine,$(call all_versions,$(ALPINE_VERSION)))
tag_app_version_parts = $(call all_versions,$(app_version))
tags =  $(tag_app_version_parts) $(tag_alpine_version_parts)\
	$(foreach app_part,$(tag_app_version_parts),$(addprefix $(app_part)-,$(tag_alpine_version_parts)))
docker_context = $(if $(DOCKER_CONTEXT_$(target)),$(DOCKER_CONTEXT_$(target)),$(target))

define build_rule =
.PHONY: build_$(target)
build_$(target):
	podman build \
		-t $(container_image_name):latest \
		--build-arg "ALPINE_VERSION=$(ALPINE_VERSION)" \
		--build-arg "VERSION=$(app_version)" \
		$(docker_context)
endef

define tag_rule =
.PHONY: tag_$(target)
tag_$(target):
	podman tag $(container_image_name):latest $(addprefix $(container_image_name):,$(tags))
endef

define push_rule =
.PHONY: push_$(target)
push_$(target): login
	podman push "$(container_image_name):latest"
	$(foreach tag,$(tags),podman push $(container_image_name):$(tag);)
endef

define target_rule =
.PHONY: $(target)
$(target): prepare_$(target) build_$(target) tag_$(target) push_$(target)
endef

.PHONY: login
login:
	podman login $(REGISTRY_DOMAIN)

$(foreach target,$(TARGETS),$(eval $(target_rule)))
$(foreach target,$(TARGETS),$(eval $(build_rule)))
$(foreach target,$(TARGETS),$(eval $(tag_rule)))
$(foreach target,$(TARGETS),$(eval $(push_rule)))

clean: $(foreach target,$(TARGETS),clean_$(target))