#
# Parameters
#

# Name of the docker executable
DOCKER = docker

# Docker organization to pull the images from
ORG = dockcross

# Directory where to generate the dockcross script for each images (e.g bin/dockcross-manylinux2014-x64)
BIN = ./bin

# These images are built using the "build implicit rule"
STANDARD_IMAGES = android-arm android-arm64 android-x86 android-x86_64 \
	linux-x86 linux-x64 linux-x64-clang linux-arm64 linux-arm64-musl linux-arm64-full \
	linux-armv5 linux-armv5-musl linux-m68k-uclibc linux-s390x linux-x64-tinycc \
	linux-armv6 linux-armv6-lts linux-armv6-musl \
	linux-armv7l-musl linux-armv7 linux-armv7a \
	linux-mips linux-ppc64le linux-riscv64 linux-riscv32 linux-xtensa-uclibc \
	windows-static-x86 windows-static-x64 windows-static-x64-posix \
	windows-shared-x86 windows-shared-x64 windows-shared-x64-posix

# Generated Dockerfiles.
GEN_IMAGES = android-arm android-arm64 \
	linux-x86 linux-x64 linux-x64-clang linux-arm64 linux-arm64-musl linux-arm64-full \
	manylinux2014-x64 manylinux2014-x86 \
	web-wasm linux-mips \
	windows-static-x86 windows-static-x64 windows-static-x64-posix \
	windows-shared-x86 windows-shared-x64 windows-shared-x64-posix \
	linux-armv7 linux-armv7a linux-armv7l-musl \
	linux-armv6 linux-armv6-lts linux-armv6-musl \
	linux-armv5 linux-armv5-musl linux-ppc64le linux-s390x \
	linux-riscv64 linux-riscv32 linux-m68k-uclibc linux-x64-tinycc linux-xtensa-uclibc

GEN_IMAGE_DOCKERFILES = $(addsuffix /Dockerfile,$(GEN_IMAGES))

# These images are expected to have explicit rules for *both* build and testing
NON_STANDARD_IMAGES = manylinux2014-x64 manylinux2014-x86 web-wasm

# Docker composite files
DOCKER_COMPOSITE_SOURCES = common.docker common.debian common.manylinux common.buildroot \
	common.crosstool common.windows common-manylinux.crosstool common.dockcross common.label-and-env
DOCKER_COMPOSITE_FOLDER_PATH = common/
DOCKER_COMPOSITE_PATH = $(addprefix $(DOCKER_COMPOSITE_FOLDER_PATH),$(DOCKER_COMPOSITE_SOURCES))

# This list all available images
IMAGES = $(STANDARD_IMAGES) $(NON_STANDARD_IMAGES)

# Optional arguments for test runner (test/run.py) associated with "testing implicit rule"
linux-x64-tinycc.test_ARGS = --languages C
windows-static-x86.test_ARGS = --exe-suffix ".exe"
windows-static-x64.test_ARGS = --exe-suffix ".exe"
windows-static-x64-posix.test_ARGS = --exe-suffix ".exe"
windows-shared-x86.test_ARGS = --exe-suffix ".exe"
windows-shared-x64.test_ARGS = --exe-suffix ".exe"
windows-shared-x64-posix.test_ARGS = --exe-suffix ".exe"

# On CircleCI, do not attempt to delete container
# See https://circleci.com/docs/docker-btrfs-error/
RM = --rm
ifeq ("$(CIRCLECI)", "true")
	RM =
endif

# Tag images with date and Git short hash in addition to revision
TAG := $(shell date '+%Y%m%d')-$(shell git rev-parse --short HEAD)

# shellcheck executable
SHELLCHECK := shellcheck

# Defines the level of verification (error, warning, info...)
SHELLCHECK_SEVERITY_LEVEL := error

#
# images: This target builds all IMAGES (because it is the first one, it is built by default)
#
images: base $(IMAGES)

#
# test: This target ensures all IMAGES are built and run the associated tests
#
test: base.test $(addsuffix .test,$(IMAGES))

#
# Generic Targets (can specialize later).
#

$(GEN_IMAGE_DOCKERFILES) Dockerfile: %Dockerfile: %Dockerfile.in $(DOCKER_COMPOSITE_PATH)
	sed \
		-e '/common.docker/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.docker' \
		-e '/common.debian/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.debian' \
		-e '/common.manylinux/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.manylinux' \
		-e '/common.crosstool/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.crosstool' \
		-e '/common.buildroot/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.buildroot' \
		-e '/common-manylinux.crosstool/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common-manylinux.crosstool' \
		-e '/common.windows/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.windows' \
		-e '/common.dockcross/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.dockcross' \
		-e '/common.label-and-env/ r $(DOCKER_COMPOSITE_FOLDER_PATH)common.label-and-env' \
		$< > $@

#
# web-wasm
#
web-wasm: web-wasm/Dockerfile
	mkdir -p $@/imagefiles && cp -r imagefiles $@/
	cp -r test web-wasm/
	$(DOCKER) build -t $(ORG)/web-wasm:latest \
		-t $(ORG)/web-wasm:$(TAG) \
		--build-arg IMAGE=$(ORG)/web-wasm \
		--build-arg VCS_REF=`git rev-parse --short HEAD` \
		--build-arg VCS_URL=`git config --get remote.origin.url` \
		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
		web-wasm
	rm -rf web-wasm/test
	rm -rf $@/imagefiles

web-wasm.test: web-wasm
	cp -r test web-wasm/
	$(DOCKER) run $(RM) $(ORG)/web-wasm > $(BIN)/dockcross-web-wasm && chmod +x $(BIN)/dockcross-web-wasm
	$(BIN)/dockcross-web-wasm python test/run.py --exe-suffix ".js"
	rm -rf web-wasm/test

#
# manylinux2014-x64
#
manylinux2014-x64: manylinux2014-x64/Dockerfile
	mkdir -p $@/imagefiles && cp -r imagefiles $@/
	$(DOCKER) build -t $(ORG)/manylinux2014-x64:latest \
		-t $(ORG)/manylinux2014-x64:$(TAG) \
		--build-arg IMAGE=$(ORG)/manylinux2014-x64 \
		--build-arg VCS_REF=`git rev-parse --short HEAD` \
		--build-arg VCS_URL=`git config --get remote.origin.url` \
		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
		-f manylinux2014-x64/Dockerfile .
	rm -rf $@/imagefiles

manylinux2014-x64.test: manylinux2014-x64
	$(DOCKER) run $(RM) $(ORG)/manylinux2014-x64 > $(BIN)/dockcross-manylinux2014-x64 \
		&& chmod +x $(BIN)/dockcross-manylinux2014-x64
	$(BIN)/dockcross-manylinux2014-x64 /opt/python/cp38-cp38/bin/python test/run.py

#
# manylinux2014-x86
#
manylinux2014-x86: manylinux2014-x86/Dockerfile
	mkdir -p $@/imagefiles && cp -r imagefiles $@/
	$(DOCKER) build -t $(ORG)/manylinux2014-x86:latest \
		-t $(ORG)/manylinux2014-x86:$(TAG) \
		--build-arg IMAGE=$(ORG)/manylinux2014-x86 \
		--build-arg VCS_REF=`git rev-parse --short HEAD` \
		--build-arg VCS_URL=`git config --get remote.origin.url` \
		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
		-f manylinux2014-x86/Dockerfile .
	rm -rf $@/imagefiles

manylinux2014-x86.test: manylinux2014-x86
	$(DOCKER) run $(RM) $(ORG)/manylinux2014-x86 > $(BIN)/dockcross-manylinux2014-x86 \
		&& chmod +x $(BIN)/dockcross-manylinux2014-x86
	$(BIN)/dockcross-manylinux2014-x86 /opt/python/cp38-cp38/bin/python test/run.py

base: Dockerfile imagefiles/
	$(DOCKER) build -t $(ORG)/base:latest \
		-t $(ORG)/base:$(TAG) \
		--build-arg IMAGE=$(ORG)/base \
		--build-arg VCS_URL=`git config --get remote.origin.url` \
		.

base.test: base
	$(DOCKER) run $(RM) $(ORG)/base > $(BIN)/dockcross-base && chmod +x $(BIN)/dockcross-base

# display
#
display_images:
	for image in $(IMAGES); do echo $$image; done

$(VERBOSE).SILENT: display_images

#
# build implicit rule
#

$(STANDARD_IMAGES): %: %/Dockerfile base
	mkdir -p $@/imagefiles && cp -r imagefiles $@/
	$(DOCKER) build -t $(ORG)/$@:latest \
		-t $(ORG)/$@:$(TAG) \
		--build-arg IMAGE=$(ORG)/$@ \
		--build-arg VCS_REF=`git rev-parse --short HEAD` \
		--build-arg VCS_URL=`git config --get remote.origin.url` \
		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
		$@
	rm -rf $@/imagefiles

clean:
	for d in $(IMAGES) ; do rm -rf $$d/imagefiles ; done
	for d in $(IMAGES) ; do rm -rf $(BIN)/dockcross-$$d ; done
	for d in $(GEN_IMAGE_DOCKERFILES) ; do rm -f $$d ; done
	rm -f Dockerfile

purge: clean
# Remove all untagged images
	$(DOCKER) container ls -aq | xargs -r $(DOCKER) container rm -f
# Remove all images with organization (ex dockcross/*)
	$(DOCKER) images --filter=reference='$(ORG)/*' --format='{{.Repository}}:{{.Tag}}' | xargs -r $(DOCKER) rmi -f

# Check bash syntax
bash-check:
	find . -type f \( -name "*.sh" -o -name "*.bash" \) -print0 | xargs -0 -P"$(shell nproc)" -I{} \
		$(SHELLCHECK) --check-sourced --color=auto --format=gcc --severity=warning --shell=bash --enable=all "{}"

#
# testing implicit rule
#
.SECONDEXPANSION:
$(addsuffix .test,$(STANDARD_IMAGES)): $$(basename $$@)
	$(DOCKER) run $(RM) $(ORG)/$(basename $@) > $(BIN)/dockcross-$(basename $@) \
		&& chmod +x $(BIN)/dockcross-$(basename $@)
	$(BIN)/dockcross-$(basename $@) python3 test/run.py $($@_ARGS)

#
# testing prerequisites implicit rule
#
test.prerequisites:
	mkdir -p $(BIN)

$(addsuffix .test,base $(IMAGES)): test.prerequisites

.PHONY: base images $(IMAGES) test %.test clean purge bash-check display_images