.ONESHELL:
SHELL = /bin/bash
.SHELLFLAGS += -e

CGW_IMG_ID := openlan-cgw-img
CGW_IMG_TAG := $(shell \
	if [[ `git status --porcelain --untracked-files=no` ]]; then \
		echo "`git rev-parse --short HEAD`-dirty"; \
	else \
		echo "`git rev-parse --short HEAD`"; \
	fi)
CGW_IMG_CONTAINER_NAME := "openlan_cgw"

CGW_BUILD_ENV_IMG_ID := openlan-cgw-build-env
CGW_BUILD_ENV_IMG_TAG := $(shell cat Dockerfile | sha1sum | awk '{print substr($$1,0,11);}')

CGW_BUILD_ENV_IMG_CONTAINER_NAME := "cgw_build_env"

.PHONY: all cgw-app cgw-build-env-img cgw-img stop clean run

all: cgw-build-env-img cgw-img
	@echo "uCentral CGW build app (container) done"

# Executed inside build-env
cgw-app:
	cargo build --target x86_64-unknown-linux-gnu --release

# Builds build-env image itself
cgw-build-env-img:
	@echo "Trying to build build-env-img, looking if exists.."
	@docker inspect --type=image ${CGW_BUILD_ENV_IMG_ID}:${CGW_BUILD_ENV_IMG_TAG} >/dev/null 2>&1 || \
		(echo "build-env-img doesn't exist, building..." && \
		docker build --file Dockerfile \
		--tag ${CGW_BUILD_ENV_IMG_ID}:${CGW_BUILD_ENV_IMG_TAG} \
		--target builder \
		.)
	@echo "build-env-img build done"

# Generates both build-env img as well as CGW result docker img
# Uses local FS / project dir for storing cache for build etc
cgw-img: stop cgw-build-env-img
	@mkdir -p output/bin > /dev/null 2>&1 || true
	@docker run -it --name ${CGW_BUILD_ENV_IMG_CONTAINER_NAME} --network=host \
		-v `realpath ./`:/usr/src/openlan-cgw \
		${CGW_BUILD_ENV_IMG_ID}:${CGW_BUILD_ENV_IMG_TAG}
	@docker cp ${CGW_BUILD_ENV_IMG_CONTAINER_NAME}:/usr/src/openlan-cgw/target/x86_64-unknown-linux-gnu/release/ucentral-cgw ./output/bin
	@docker build --file Dockerfile \
		--tag ${CGW_IMG_ID}:${CGW_IMG_TAG} \
		--target cgw-img \
		.
	@echo Docker build done;

stop:
	@echo "Stopping / removing container ${CGW_IMG_CONTAINER_NAME}"
	@docker stop ${CGW_IMG_CONTAINER_NAME} > /dev/null 2>&1 || true;
	@docker container rm ${CGW_IMG_CONTAINER_NAME} > /dev/null 2>&1 || true;
	@echo "Stopping / removing container ${CGW_BUILD_ENV_IMG_CONTAINER_NAME}"
	@docker stop ${CGW_BUILD_ENV_IMG_CONTAINER_NAME} > /dev/null 2>&1 || true;
	@docker container rm ${CGW_BUILD_ENV_IMG_CONTAINER_NAME} > /dev/null 2>&1 || true;

clean: stop
	@echo Cleaning build env and artifacts...
	@docker rmi ${CGW_IMG_ID}:${CGW_IMG_TAG} >/dev/null 2>&1 || true
	@docker rmi ${CGW_BUILD_ENV_IMG_ID}:${CGW_BUILD_ENV_IMG_TAG} >/dev/null 2>&1 || true
	@echo Done!

run: stop cgw-img
	@./run_cgw.sh "${CGW_IMG_ID}:${CGW_IMG_TAG}" ${CGW_IMG_CONTAINER_NAME}