HAPROXY_VERSION = 2.6.0
HAPROXY_GITREF = a1efc048bf8a5e14466dbe7317e73117e8d66176
HAPROXY_SHORTSHA = $(shell echo "$(HAPROXY_GITREF)" | grep -Eo '^.{7}' || echo "$(HAPROXY_GITREF)")
HAPROXY_VERSION_MINOR = $(shell echo "$(HAPROXY_VERSION)" | cut -d'.' -f1-2)

HAPROXY_SOURCES = https://git.haproxy.org/?p=haproxy.git;a=snapshot;h=$(HAPROXY_GITREF);sf=tgz
HAPROXY_TARBALL = haproxy-$(HAPROXY_VERSION)-$(HAPROXY_SHORTSHA).tar.gz
HAPROXY_DEBORIG = haproxy_$(HAPROXY_VERSION)-$(HAPROXY_SHORTSHA).orig.tar.gz
HAPROXY_BUILDIR = src
HAPROXY_DESTDIR = dist
HAPROXY_DESTDIR_ABS = $(shell realpath $(HAPROXY_DESTDIR))
HAPROXY_ARCHIVE = haproxy-dist.tar.gz

DEP_DIST_ROOT_LUA = $(shell realpath ../deps/lua/dist)
DEP_DIST_ROOT_PCRE2 = $(shell realpath ../deps/pcre2/dist)
DEP_DIST_ROOT_QUICTLS = $(shell realpath ../deps/quictls/dist)
DEP_DIST_ROOT_VTEST = $(shell realpath ../deps/vtest/dist)

BUILD_VERSION_REPOSHA = $(shell git rev-parse --short HEAD)

BUILD_PATCHES_DIR = $(shell realpath patches)
BUILD_PATCHES_FILES = $(shell ls -1 $(BUILD_PATCHES_DIR))
DEBIAN_PATCHES_DIR = "$(HAPROXY_BUILDIR)/debian/patches"

MAKEARGS = DEBUG="-DDEBUG_MEMORY_POOLS -DDEBUG_STRICT" \
           DEFINE="-DMAX_SESS_STKCTR=5" \
           IGNOREGIT=true \
           ADDLIB="-Wl,-rpath,/opt/quictls/lib" \
           TARGET="linux-glibc" \
           EXTRAVERSION="+mangadex-$(BUILD_VERSION_REPOSHA)" \
           VERDATE="$(shell date -u -I'minutes')" \
           USE_LIBCRYPT=1 \
           USE_LUA=1 \
           LUA_INC="$(DEP_DIST_ROOT_LUA)/include" \
           LUA_LIB="$(DEP_DIST_ROOT_LUA)/lib" \
           LUA_LIB_NAME="lua" \
           USE_NS=1 \
           USE_OPENSSL=1 \
           SSL_INC="$(DEP_DIST_ROOT_QUICTLS)/opt/quictls/include" \
           SSL_LIB="$(DEP_DIST_ROOT_QUICTLS)/opt/quictls/lib" \
           USE_PCRE2=1 \
           USE_PCRE2_JIT=1 \
           USE_STATIC_PCRE2=1 \
           PCRE2_INC="$(DEP_DIST_ROOT_PCRE2)/include" \
           PCRE2_LIB="$(DEP_DIST_ROOT_PCRE2)/lib64" \
           PCRE2_CONFIG="$(DEP_DIST_ROOT_PCRE2)/bin/pcre2-config" \
           USE_PROMEX=1 \
           USE_QUIC=1 \
           USE_SLZ=1 \
           USE_TFO=1 \
           USE_SYSTEMD=1

all: dist-bin

dist-bin: build $(HAPROXY_DESTDIR) $(HAPROXY_ARCHIVE)
dist-deb: build-deb

$(HAPROXY_TARBALL):
	curl -sfS -o "$(HAPROXY_TARBALL)" "$(HAPROXY_SOURCES)"

$(HAPROXY_BUILDIR): $(HAPROXY_TARBALL)
	@if ! [ -d "$(HAPROXY_BUILDIR)" ]; then mkdir -v "$(HAPROXY_BUILDIR)"; fi
	tar -C "$(HAPROXY_BUILDIR)" --strip-components=1 -xf "$(HAPROXY_TARBALL)"

patches: $(HAPROXY_BUILDIR)
	@cd "$(HAPROXY_BUILDIR)" && for patch in $(BUILD_PATCHES_FILES); do patch -p1 --forward < "$(BUILD_PATCHES_DIR)/$${patch}" || true; done

build: $(HAPROXY_BUILDIR) patches
	$(MAKE) -C "$(HAPROXY_BUILDIR)" -j "$(shell nproc)" $(MAKEARGS) opts
	$(MAKE) -C "$(HAPROXY_BUILDIR)" -j "$(shell nproc)" $(MAKEARGS)

# Ignore ssl/ssl_generate_certificate.vtc as it fails and I have no clue why at all
test: $(HAPROXY_BUILDIR)
	rm -v "$(HAPROXY_BUILDIR)/reg-tests/ssl/ssl_generate_certificate.vtc" || true
	VTEST_PROGRAM="$(DEP_DIST_ROOT_VTEST)/vtest" \
		$(MAKE) -C "$(HAPROXY_BUILDIR)" -j "$(shell nproc)" REGTESTS_TYPES=default,bug,devel reg-tests

$(HAPROXY_DESTDIR):
	@if ! [ -d "$(HAPROXY_DESTDIR)" ]; then mkdir -v "$(HAPROXY_DESTDIR)"; fi
	$(MAKE) -C "$(HAPROXY_BUILDIR)" -j "$(shell nproc)" DESTDIR="$(HAPROXY_DESTDIR_ABS)" install

$(HAPROXY_ARCHIVE): $(HAPROXY_DESTDIR)
	tar -C "$(HAPROXY_DESTDIR)" -cjf "$(HAPROXY_ARCHIVE)" "usr"

$(HAPROXY_DEBORIG): $(HAPROXY_TARBALL)
	cp -fv "$(HAPROXY_TARBALL)" "$(HAPROXY_DEBORIG)"

prepare-deb: $(HAPROXY_DEBORIG) $(HAPROXY_BUILDIR)
	cp -rf debian $(HAPROXY_BUILDIR)/
	@for patch in $(BUILD_PATCHES_FILES); do cp -v "$(BUILD_PATCHES_DIR)/$${patch}" "$(DEBIAN_PATCHES_DIR)/$${patch}"; done
	@for patch in $(BUILD_PATCHES_FILES); do echo "$${patch}" >> "$(DEBIAN_PATCHES_DIR)/series"; done
	export BUILD_DATE="$(shell date -u +'%a, %e %b %Y %H:%m:%S %z')" && \
		export BUILD_VERSION="$(HAPROXY_VERSION)-$(HAPROXY_SHORTSHA)-1~mangadex+$(BUILD_VERSION_REPOSHA)" && \
		export BUILD_MESSAGE="$${BUILD_MESSAGE:-"No build changelog message"}" && \
		envsubst < changelog.debian | tee "$(HAPROXY_BUILDIR)/debian/changelog" && \
		cat debian/changelog >> "$(HAPROXY_BUILDIR)/debian/changelog"

build-deb: prepare-deb
	cd $(HAPROXY_BUILDIR) && debuild -us -uc
	rm -fv $(HAPROXY_TARBALL)
	rm -rf $(HAPROXY_BUILDIR)

clean:
	rm -fv "$(HAPROXY_TARBALL)"
	rm -rf "$(HAPROXY_DEBORIG)"
	rm -rf "$(HAPROXY_BUILDIR)"
	rm -rf "$(HAPROXY_DESTDIR)"
	rm -fv "$(HAPROXY_ARCHIVE)"
	rm -fv "haproxy_"*
	rm -fv "haproxy-dbgsym_"*

.PHONY: clean patches build test prepare-deb