#!/usr/bin/make -f

export DEB_BUILD_MAINT_OPTIONS = hardening=+all
export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
export DEB_CXXFLAGS_MAINT_APPEND  = -Wall -pedantic

# trust upstream optimization level by default
ifeq (,$(filter noopt,$(DEB_BUILD_OPTIONS)))
export DEB_CFLAGS_MAINT_STRIP=-O2
export DEB_CXXFLAGS_MAINT_STRIP=-O2
endif

include /usr/share/dpkg/default.mk
include /usr/share/rustc/architecture.mk

export CFLAGS CXXFLAGS CPPFLAGS LDFLAGS
export DEB_HOST_RUST_TYPE DEB_HOST_GNU_TYPE

export PYBUILD_NAME=matrix-synapse

export PATH := /usr/share/cargo/bin:$(PATH)

export CARGO=/usr/share/cargo/bin/cargo
export CARGO_HOME=$(CURDIR)/debian/cargo_home

export DEB_CARGO_CRATE=$(DEB_SOURCE)_$(DEB_VERSION_UPSTREAM)

# resolve all direct entries in first "package..." section in TODO
VENDORLIBS = $(shell perl -nE \
 '/^(?:\s{2}[*]\s*(?:(package)|(\S+))|\s{4}[*]\s*(\S+))/ or next; \
 $$i++ if $$1; exit if $$i > 1 or $$2; say $$3 if $$3 and $$i;' \
 debian/TODO)

comma = ,
_mangle = perl -gpi \
 -e 's/$(1)\W+version = "\K\Q$(subst |,$(comma),$(2))"/$(subst |,$(comma),$(3))"/g;' \
 $(patsubst %,debian/vendorlibs/%/Cargo.toml,$(4))

%:
	dh $@ --buildsystem=pybuild

execute_before_dh_auto_configure:
	sed -i '/common/s/~=/>=/' pyproject.toml
	mkdir -p debian/cargo_registry
	for file in $(CURDIR)/debian/vendorlibs/* ; do \
		name=`basename "$$file"` ;\
		[ -e debian/cargo_registry/"$$name" ] || ln -sT "$$file" debian/cargo_registry/"$$name" ;\
	done
	$(CARGO) prepare-debian debian/cargo_registry --link-from-system

execute_after_dh_auto_clean:
	rm -rf debian/cargo_registry
	mv Cargo.lock debian/Cargo.lock.orig || true
	rm -f setup.py
	rm -rf debian/cargo_home target

override_dh_auto_install:
	dh_auto_install
	for f in $$(find debian/$(PYBUILD_NAME) -name 'jquery*min.js'); \
	do \
	    rm $$f; \
	    ln -s /usr/share/javascript/jquery/jquery.min.js $$f; \
	done
	sed -i \
		-e 's,#!/usr/bin/env perl,#!/usr/bin/perl,' \
		debian/*/usr/bin/*
	mv debian/*/usr/bin/* debian/*/usr/libexec/*/
	/usr/share/cargo/bin/dh-cargo-built-using matrix-synapse

execute_after_dh_installdocs:
	mv debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/installation.md \
	   debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/INSTALL.md
	mv debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/upgrade.md \
	   debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/UPGRADE.md
	ln -sr debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/UPGRADE.md \
	       debian/$(PYBUILD_NAME)/usr/share/doc/matrix-synapse/UPGRADE.rst
	sed -i \
		-e 's,/opt/venvs/matrix-synapse/bin/python,/usr/bin/python3,' \
		-e 's,Restart=always,Restart=on-failure,' \
		debian/*/usr/share/doc/matrix-synapse/misc/systemd-with-workers/system/*.service

override_dh_compress:
	dh_compress -XREADME

override_dh_auto_clean:
	mv debian/Cargo.lock.orig Cargo.lock || true
	dh_auto_clean

ifeq ($(DEB_HOST_ARCH_BITS),32)
override_dh_auto_test:
	-dh_auto_test
endif

PYTHONS=$(wildcard /usr/bin/python3.? /usr/bin/python3.??)
CURRENT_PYTHON=$(shell readlink -f /usr/bin/python3)
OTHER_PYTHONS=$(filter-out $(CURRENT_PYTHON),$(PYTHONS))
OTHER_PYTHON_VERSIONS=$(subst /usr/bin/python,,$(OTHER_PYTHONS))

pybuild-autopkgtest: export PYBUILD_VERBOSE=1
pybuild-autopkgtest: export PYBUILD_DISABLE=$(OTHER_PYTHON_VERSIONS)

.PHONY: pybuild-autopkgtest

# custom target unused during official build
get-vendorlibs:
# preserve and use pristine Cargo.lock
	[ -f Cargo.lock.orig ] || cp Cargo.lock Cargo.lock.orig
	cp -f Cargo.lock.orig Cargo.lock

# modernize crates
	cargo update

# preserve needed crates
	cargo vendor --versioned-dirs debian/vendorlibs~
	rm -rf debian/vendorlibs
	mkdir debian/vendorlibs
	cd debian/vendorlibs~ && mv --target-directory=../vendorlibs $(VENDORLIBS)

# use newer crates
	$(call _mangle,structopt,0.2,>= 0.2| <= 0.3,ulid-1.1.3)

# use older crates
	$(call _mangle,memoffset,0.9,>= 0.8.0| <= 0.9,pyo3-0.21.2)

# avoid WASM-only crates
	perl -gpi \
	 -e 's/\[target(\W+cfg\(target)?\W+wasm[^\n]*(\n[^\[\n][^\n]*)*//g;' \
	 debian/vendorlibs/ulid-1.1.3/Cargo.toml

# strip checksums for mangled crates
	echo '{"package":"Could not get crate checksum","files":{}}' \
	 | tee $(patsubst %,debian/vendorlibs/%/.cargo-checksum.json,\
	 pyo3-0.21.2 \
	 ulid-1.1.3 \
	 )

# cleanup
	rm -rf debian/vendorlibs~
	[ ! -f Cargo.lock.orig ] || mv -f Cargo.lock.orig Cargo.lock