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# Various one-liners which I'm too lazy to remember.
# Basically a collection of really small shell scripts.

MAKEFLAGS += --warn-undefined-variables
SHELL := bash
.SHELLFLAGS := -eu -o pipefail -c
.DEFAULT_GOAL := all
.SUFFIXES:

PROJECT = math_server
# Enable buildx support:
export DOCKER_CLI_EXPERIMENTAL = enabled
# Target platforms (used by buildx):
platforms = linux/amd64,linux/armhf
# Docker Hub credentials:
DOCKER_USERNAME = egortensin

all: build

DO:

login:
ifndef DOCKER_PASSWORD
	$(error Please define DOCKER_PASSWORD)
endif
	@echo "$(DOCKER_PASSWORD)" | docker login --username "$(DOCKER_USERNAME)" --password-stdin

# Build natively by default.
build: compose/build

clean:
	docker system prune --all --force --volumes

# Push multi-arch images by default.
push: buildx/push

pull:
	docker-compose pull

up:
	docker-compose up -d server

client:
	docker-compose run --rm client

down:
	docker-compose down --volumes

check-build:
ifndef FORCE
	$(warning Going to build natively; consider `docker buildx build` instead)
endif

check-push:
ifndef FORCE
	$(error Please use `docker buildx build --push` instead)
endif

# `docker build` has week support for multiarch repos (you need to use multiple
# Dockerfile's, create a manifest manually, etc.), so it's only here for
# testing purposes, and native builds.
docker/build/%: DO check-build
	docker build -f "$*/Dockerfile" -t "$(DOCKER_USERNAME)/math-$*" .

docker/build: docker/build/client docker/build/server

# `docker push` would replace the multiarch repo with a single image by default
# (you'd have to create a manifest and push it instead), so it's only here for
# testing purposes.
docker/push/%: DO check-push docker/build/%
	docker push "$(DOCKER_USERNAME)/math-$*"

docker/push: check-push docker/push/client docker/push/server

# `docker-compose build` has the same problems as `docker build`.
compose/build: check-build
	docker-compose build

# `docker-compose push` has the same problems as `docker push`.
compose/push: check-push compose/build
	docker-compose push

# The simple way to build multiarch repos is `docker buildx`.

# Re-register binfmt_misc formats with the F flag (required i.e. on Bionic):
fix-binfmt:
	docker run --rm --privileged docker/binfmt:66f9012c56a8316f9244ffd7622d7c21c1f6f28d

buildx/create: fix-binfmt
	docker buildx create --use --name "$(PROJECT)_builder"

buildx/rm:
	docker buildx rm "$(PROJECT)_builder"

buildx/build/%: DO
	docker buildx build -f "$*/Dockerfile" -t "$(DOCKER_USERNAME)/math-$*" --platform "$(platforms)" --progress plain .

buildx/build: buildx/build/client buildx/build/server

buildx/push/%: DO
	docker buildx build -f "$*/Dockerfile" -t "$(DOCKER_USERNAME)/math-$*" --platform "$(platforms)" --progress plain --push .

buildx/push: buildx/push/client buildx/push/server

.PHONY: all login build clean push pull up client down
.PHONY: check-build check-push
.PHONY: docker/build docker/push
.PHONY: compose/build compose/push
.PHONY: fix-binfmt buildx/create buildx/rm buildx/build buildx/push