#!/usr/bin/make -f

export DH_VERBOSE = 1

DEB_VERSION := $(shell dpkg-parsechangelog -S Version)
UPSTREAM_VERSION := $(shell echo $(DEB_VERSION) | sed 's/^[0-9]*://; s/ppa[0-9]*$$//')
SRCDIR := dank-greeter-$(UPSTREAM_VERSION)

DEB_HOST_ARCH := $(shell dpkg-architecture -qDEB_HOST_ARCH)

# Go needs writable directories for its caches
export HOME := $(CURDIR)/debian/tmp-home
export GOCACHE := $(CURDIR)/debian/tmp-home/go-cache
export GOMODCACHE := $(CURDIR)/debian/tmp-home/go-mod

# Launchpad has no network access: dependencies are vendored in the source
# and the Go toolchain is bundled (distro golang-go lags go.mod)
export GOTOOLCHAIN := local
export GOFLAGS := -mod=vendor

%:
	dh $@

override_dh_auto_test:
	@echo "Skipping dh_auto_test (Launchpad offline; tests run in CI)"

override_dh_auto_build:
	mkdir -p $(HOME) $(GOCACHE) $(GOMODCACHE)

	test -f dms-greeter-source.tar.gz || (echo "ERROR: dms-greeter-source.tar.gz not found!" && exit 1)
	tar -xzf dms-greeter-source.tar.gz
	test -d $(SRCDIR)/core/vendor || (echo "ERROR: vendored Go dependencies missing!" && exit 1)

	# Bundled Go (go$$VER.linux-{amd64,arm64}.tar.gz), staged by ppa-upload.sh
	GO_TARBALL=$$(ls "$(CURDIR)"/go[0-9]*.linux-$(DEB_HOST_ARCH).tar.gz 2>/dev/null | head -n1); \
	test -f "$$GO_TARBALL" || (echo "ERROR: Missing bundled Go toolchain for $(DEB_HOST_ARCH)" && exit 1); \
	rm -rf "$(CURDIR)/go-bootstrap" "$(CURDIR)/.go-toolchain"; \
	mkdir -p "$(CURDIR)/go-bootstrap"; \
	tar -xzf "$$GO_TARBALL" -C "$(CURDIR)/go-bootstrap"; \
	mv "$(CURDIR)/go-bootstrap/go" "$(CURDIR)/.go-toolchain"; \
	export PATH="$(CURDIR)/.go-toolchain/bin:$$PATH"; \
	export GOROOT="$(CURDIR)/.go-toolchain"; \
	go version; \
	$(MAKE) -C $(SRCDIR)/core build VERSION="$(UPSTREAM_VERSION)" COMMIT=release

override_dh_auto_install:
	install -Dm755 $(SRCDIR)/core/bin/dms-greeter debian/dms-greeter/usr/bin/dms-greeter

	install -d debian/dms-greeter/usr/share/bash-completion/completions
	install -d debian/dms-greeter/usr/share/zsh/vendor-completions
	install -d debian/dms-greeter/usr/share/fish/vendor_completions.d
	$(SRCDIR)/core/bin/dms-greeter completion bash > debian/dms-greeter/usr/share/bash-completion/completions/dms-greeter
	$(SRCDIR)/core/bin/dms-greeter completion zsh > debian/dms-greeter/usr/share/zsh/vendor-completions/_dms-greeter
	$(SRCDIR)/core/bin/dms-greeter completion fish > debian/dms-greeter/usr/share/fish/vendor_completions.d/dms-greeter.fish

	install -Dpm0644 $(SRCDIR)/assets/systemd/sysusers-dms-greeter.conf \
		debian/dms-greeter/usr/lib/sysusers.d/dms-greeter.conf
	install -Dpm0644 $(SRCDIR)/assets/systemd/tmpfiles-dms-greeter.conf \
		debian/dms-greeter/usr/lib/tmpfiles.d/dms-greeter.conf

	install -Dm644 $(SRCDIR)/README.md debian/dms-greeter/usr/share/doc/dms-greeter/README.md
	install -Dm644 $(SRCDIR)/LICENSE debian/dms-greeter/usr/share/doc/dms-greeter/LICENSE
	install -d debian/dms-greeter/usr/share/doc/dms-greeter/examples
	install -m644 $(SRCDIR)/assets/examples/* debian/dms-greeter/usr/share/doc/dms-greeter/examples/

override_dh_auto_clean:
	rm -rf dank-greeter-*
	rm -rf debian/tmp-home go-bootstrap .go-toolchain
	dh_auto_clean
