.PHONY: all release dev manpages install clean uninstall run run-dialog

DESTDIR ?= =
PREFIX ?= /usr/local
BINDIR ?= $(PREFIX)/bin
LIBEXECDIR ?= $(PREFIX)/libexec
SYSCONFDIR ?= $(PREFIX)/etc
DATADIR ?= $(PREFIX)/share
MANDIR ?= $(DATADIR)/man

APPLICATIONS_DIR = $(DATADIR)/applications
CONFIG_DIR = $(SYSCONFDIR)/xdg/bscreensaver
HELPER_DIR = $(LIBEXECDIR)/bscreensaver

HELPERS := \
	bscreensaver-dbus-service \
	bscreensaver-systemd \
	bscreensaver-dialog-gtk3 \
	$(NULL)

BINARIES := \
	bscreensaver \
	bscreensaver-command \
	bscreensaver-settings \
	$(NULL)

TARGETS := \
	$(BINARIES) \
	$(HELPERS) \
	$(NULL)

DEV_OUT = target/debug
RELEASE_OUT = target/release

SOURCES := $(find . -name '*.rs') $(find . -name Cargo.toml) Cargo.lock
DEV_TARGETS := $(addprefix $(DEV_OUT),$(TARGETS))
RELEASE_TARGETS := $(addprefix $(RELEASE_OUT),$(TARGETS))

MANPAGES := \
	bscreensaver.1.gz \
	bscreensaver-command.1.gz \
	$(NULL)
RELEASE_MANPAGES := $(addprefix $(RELEASE_OUT)/,$(MANPAGES))

INSTALL ?= install
HELP2MAN ?= help2man

RUST_RELEASE_CHANNEL = nightly
ifeq ($(RUST_RELEASE_CHANNEL),nightly)
	RUST_RELEASE_CHANNEL_ARG = +nightly
else
	FEATURES_ARGS = --no-default-features
endif

DEV_LOG_LEVEL = debug

all: release manpages

release: $(RELEASE_TARGETS)

dev: $(DEV_TARGETS)

manpages: $(RELEASE_MANPAGES)

install: release manpages
	$(INSTALL) -m 0755 -d $(addprefix $(DESTDIR),$(BINDIR) $(HELPER_DIR) $(CONFIG_DIR) $(APPLICATIONS_DIR) $(MANDIR)/man1)
	$(INSTALL) -m 0755 $(addprefix $(RELEASE_OUT)/,$(BINARIES)) $(DESTDIR)$(BINDIR)
	$(INSTALL) -m 0755 $(addprefix $(RELEASE_OUT)/,$(HELPERS)) $(DESTDIR)$(HELPER_DIR)
	$(INSTALL) -m 0644 bscreensaver.toml.example $(DESTDIR)$(CONFIG_DIR)
	$(INSTALL) -m 0644 settings/bscreensaver-settings.desktop $(DESTDIR)$(APPLICATIONS_DIR)
	$(INSTALL) -m 0644 $(RELEASE_MANPAGES) $(DESTDIR)$(MANDIR)/man1

$(DEV_TARGETS): $(SOURCES)
	HELPER_DIR=target/debug cargo $(RUST_RELEASE_CHANNEL_ARG) build $(FEATURES_ARGS)

$(RELEASE_TARGETS): $(SOURCES)
	HELPER_DIR=$(HELPER_DIR) cargo $(RUST_RELEASE_CHANNEL_ARG) build $(FEATURES_ARGS) --release

$(RELEASE_OUT)/%.1.gz: $(RELEASE_OUT)/%.1
	gzip -c -k $< > $@

$(RELEASE_OUT)/%.1: $(RELEASE_TARGETS)
	$(HELP2MAN) --no-info $(subst .1,,$@) > $@

clean:
	cargo $(RUST_RELEASE_CHANNEL_ARG) clean

uninstall:
	rm -f $(addprefix $(DESTDIR)$(BINDIR),$(BINARIES)) $(addprefix $(HELPER_DIR)/,$(HELPERS))) || true
	rm -f $(addprefix $(DESTDIR)$(MANDIR)/man1/,$(MANPAGES))
	rmdir -p $(addprefix $(DESTDIR),$(BINDIR) $(HELPER_DIR) $(APPLICATIONS_DIR) $(MANDIR)/man1) || true

run: $(DEV_TARGETS)
	BSCREENSAVER_LOCAL_DEV=1 \
	RUST_BACKTRACE=1 \
	BSCREENSAVER_LOG=$(DEV_LOG_LEVEL) \
	BSCREENSAVER_DBUS_SERVICE_LOG=$(DEV_LOG_LEVEL) \
	BSCREENSAVER_SYSTEMD_LOG=$(DEV_LOG_LEVEL) \
	BSCREENSAVER_DIALOG_GTK3_LOG=$(DEV_LOG_LEVEL) \
	HELPER_DIR=target/debug \
	cargo $(RUST_RELEASE_CHANNEL_ARG) run $(FEATURES_ARGS) --bin bscreensaver

run-dialog:
	RUST_BACKTRACE=1 \
	BSCREENSAVER_DIALOG_GTK3_LOG=$(DEV_LOG_LEVEL) \
	BSCREENSAVER_DIALOG_STANDALONE=1 \
	cargo $(RUST_RELEASE_CHANNEL_ARG) run $(FEATURES_ARGS) --bin bscreensaver-dialog-gtk3