# ENV

RUN_ARGS ?=

SHELL := /bin/bash
MAKE := $(MAKE) --no-print-directory

BUILD_DIR ?= build
TARGET ?= forge
VERSION ?= invar-$(shell grep -Eo '[0-9]+\.[0-9]+\.[0-9]+' configure.ac)

CC ?= gcc
SOURCES ?= src/*.h src/*.c hashmap.c/hashmap.c log.c/src/log.c
CFLAGS ?= -Ofast -Ofast -march=native -flto -funroll-loops -fprefetch-loop-arrays -fno-exceptions -fopenmp -Iinclude -DGLFW_INCLUDE_NONE -DGLFW_EXPOSE_NATIVE_EGL -DGLFW_NATIVE_INCLUDE_NONE -DLOG_USE_COLOR -DVERSION=\"$(VERSION)\"
EXTRA_CFLAGS ?= -DEGL_DEBUG -DGL_DEBUG -DVIDEO_IN
LDLIBS ?= -lm -lGL -lglfw -lasound

CLANG_FORMAT ?= clang-format
VALGRIND ?= valgrind

ACLOCAL ?= aclocal
AUTOCONF ?= autoconf
AUTOMAKE ?= automake
CONFIGURE ?= ./configure
MAKEPKG ?= makepkg

INSTALL_DIR ?= $(HOME)/.local/bin

# DOCS

.PHONY: help
help: ## show this message
	@echo "Usage: $(MAKE) [target1] [target2] ..."
	@echo ""
	@echo "Commands/Targets:"
	@cat $(MAKEFILE_LIST) | grep -E '(^[a-zA-Z0-9_%-]+:.*?##.*$$)|(^##)' | awk 'BEGIN {FS = ":.*?## "}{printf "\033[32m%-20s\033[0m %s\n", $$1, $$2}' | sed -e 's/\[32m##/[33m/'
	@echo ""
	@echo "Environment:"
	@cat $(MAKEFILE_LIST) | grep -E '^[a-zA-Z0-9_-]+\s*\??=.*$$' | grep -Eo '^[a-zA-Z0-9_-]+' | xargs -I {} $(MAKE) -s print-{} 2> /dev/null

.PHONY: print-%
print-%:
	@echo -e '\033[32m$*\033[0m = $($*)'

# FILES

$(BUILD_DIR)/$(TARGET):
	mkdir -p $(BUILD_DIR)
	$(CC) $(SOURCES) $(CFLAGS) $(EXTRA_CFLAGS) $(LDLIBS) -o $(BUILD_DIR)/$(TARGET)

# ACTIONS

.PHONY: init
init: git-submodule-update ## init project

.PHONY: clean
clean: rm-build ## clean build artifacts

.PHONY: full-clean
full-clean: rm-build git-clean rm-deps ## remove any residual files

.PHONY: build
build: $(BUILD_DIR)/$(TARGET) ## build project

.PHONY: build-no-video
build-no-video: ## build project no video in
	EXTRA_CFLAGS= $(MAKE) build

.PHONY: run
run: exec-build ## run project with $RUN_ARGS

.PHONY: run-%
run-%: ## run {project} with $RUN_ARGS
	$(MAKE) exec-build-$*

.PHONY: format
format: clang-format ## format project

.PHONY: release-test
release-test: full-clean aclocal autoconf automake start-configure make-distcheck cp-release ## test release

.PHONY: release-arch
release-arch: clean makepkg

.PHONY: release-%
release-%:  ## build release {version}
	$(MAKE) full-clean git-pull prepare-configure-$* aclocal autoconf automake start-configure make-distcheck cp-release prepare-pkgbuild-$* git-commit-release

# TOOLS

.PHONY: rm-build
rm-build: ## rm -rf build
	rm -rf $(BUILD_DIR)

.PHONY: git-clean
git-clean: ## git clean -f -x
	git clean -f -x

.PHONY: rm-deps
rm-deps: ## rm -rf */.deps
	rm -rf */*/.deps
	rm -rf */.deps

.PHONY: clang-format
clang-format: ## clang-format -i src/*
	clang-format -i src/*

.PHONY: exec-build
exec-build: $(BUILD_DIR)/$(TARGET) ## ./build/forge $RUN_ARGS
	./$(BUILD_DIR)/$(TARGET) $(RUN_ARGS)

.PHONY: exec-build-%
exec-build-%: $(BUILD_DIR)/$(TARGET) ## ./build/forge --project={project} $RUN_ARGS
	./$(BUILD_DIR)/$(TARGET) --project=$* $(RUN_ARGS)

.PHONY: valgrind
valgrind: build/$(TARGET)
	$(VALGRIND) \
		--show-realloc-size-zero=no \
		--undef-value-errors=no \
		./$(BUILD_DIR)/$(TARGET) $(RUN_ARGS)

.PHONY: aclocal
aclocal: ## aclocal
	$(ACLOCAL)

.PHONY: autoconf
autoconf: ## autoconf
	$(AUTOCONF)

.PHONY: automake
automake: ## automake --add-missing
	$(AUTOMAKE) --add-missing

.PHONY: start-configure
start-configure: ## ./configure
	$(CONFIGURE)

.PHONY: make-%
make-%: ## make {target}
	$(MAKE) $*

.PHONY: cp-release
cp-release: ## cp forge-steel-xxx.tar.gz build/
	mkdir -p $(BUILD_DIR)
	cp $(TARGET)-steel-*.tar.gz $(BUILD_DIR)/

.PHONY: git-submodule-update
git-submodule-update: ## git submodule update --init --recursive
	git submodule update --init --recursive

.PHONY: git-pull
git-pull: ## git pull origin main
	git pull origin main

.PHONY: prepare-configure-%
prepare-configure-%: ## sed -i {version} configure.ac
	sed -i -E "s/[0-9]+\\.[0-9]+\\.[0-9]+/$*/g" configure.ac

.PHONY: prepare-pkgbuild-%
prepare-pkgbuild-%: ## sed -i {version} PKGBUILD
	sed -i -E "s/pkgver=[0-9]+\\.[0-9]+\\.[0-9]+/pkgver=$*/g" PKGBUILD
	sha256sum build/forge-steel-$*.tar.gz | cut -d' ' -f1 | xargs -I{} sed -i -E "s/sha256sums=\\('.*'\\)/sha256sums=\\('{}'\\)/g" PKGBUILD

.PHONY: git-commit-release
git-commit-release: ## git commit -am "forge (steel) v{version}"
	git add configure.ac PKGBUILD
	git commit -am "forge (steel) v$*"
	git tag v$* -m "FORGE steel-$*"
	@echo "Push release: git push origin main --tags"
	@echo "Rollback release: git reset HEAD~1 --hard && git tag -d v$*"

.PHONY: makepkg
makepkg: ## makepkg
	mkdir -p $(BUILD_DIR)
	cp PKGBUILD $(BUILD_DIR)
	cd $(BUILD_DIR) && $(MAKEPKG)