IGNORED := $(shell grep -v testenv .gitignore)
VOLUME_ARG =
COMPOSE_V2 := $(shell $(SHELL) -c "docker compose; exit 0" 2>&1 1>/dev/null)
ifndef COMPOSE_V2
	COMPOSE_COMMAND = docker compose
else
	COMPOSE_V1 := $(shell command -v docker-compose)
	ifdef COMPOSE_V1
		COMPOSE_COMMAND = docker-compose
	endif
endif

.PHONY: all
all:
	@$(MAKE) usage | less

# Display usage for all make targets
.PHONY: usage
usage:
	@echo
	@echo 'make TARGET'
	@echo
	@echo 'TESTING'
	@echo
	@echo '  make test'
	@echo '    - Perform tests done by continuous integration.'
	@echo '      This target will:'
	@echo '        - Remove previously built data'
	@echo '        - Build the site'
	@echo '        - Test the site using html-proofer'
	@echo
	@echo '  make up'
	@echo '    - Start a container to locally test the website.'
	@echo '      This target will:'
	@echo '        - Start a jekyll container (re-using it if it already exists)'
	@echo '        - Expose the website on port 4000 of the local host'
	@echo
	@echo '  make logs'
	@echo '    - Tail the logs of the running jekyll container.'
	@echo
	@echo '  make restart'
	@echo '    - Restart the jekyll container.'
	@echo
	@echo '  make down'
	@echo '    - Shutdown and remove the jekyll container.'
	@echo
	@echo '  make clean'
	@echo '    - Remove previously built data and any jekyll containers.'
	@echo
	@echo '  make fresh'
	@echo '    - Like "make clean", but also removes the docker volumes.'
	@echo

.PHONY: test
test: require-docker-compose clean
	$(COMPOSE_COMMAND) run --rm website test/validate

.PHONY: up
up: require-docker-compose
	$(COMPOSE_COMMAND) up --no-recreate -d
	@echo
	@echo Started docker container. It will probably take a bit of time before
	@echo the webserver is listening. You can run \"make logs\" to watch the logs
	@echo of this container.
	@echo
	@echo The site will be served at http://0.0.0.0:4000/

.PHONY: logs
logs: require-docker-compose
	$(COMPOSE_COMMAND) logs --tail 0 -f

.PHONY: restart
restart: require-docker-compose
	$(COMPOSE_COMMAND) restart

.PHONY: down
down: require-docker-compose
	$(COMPOSE_COMMAND) down --remove-orphans ${VOLUME_ARG}

.PHONY: clean
clean: down
	rm -rf ${IGNORED}

.PHONY: fresh
fresh: VOLUME_ARG = -v
fresh: clean

.PHONY: require-docker-compose
require-docker-compose: require-docker
	@if [ -z "$(COMPOSE_COMMAND)" ]; then \
		echo "Sorry, this make target requires docker compose to be supported."; \
		false; \
	fi

.PHONY: require-docker
require-docker:
	@if ! command -v "docker" >/dev/null 2>&1; then \
		echo "Sorry, this make target requires docker to be installed."; \
		false; \
	fi