MKFILE:=$(shell realpath $(lastword $(MAKEFILE_LIST)))
MKFILE_DIR:=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))

help:
	@ echo "make help        - displays this text"
	@ echo "make install     - installs this software into your system"
	@ echo "make uninstall   - uninstalls this software from your system"
	@ echo "make purge       - uninstalls and removes configuration files"

init-config:
	-mkdir -p watched_rss.d
	-touch webhook.url

run: guard-has-cfgdir
	python3 -m rss2discordwh $(CFGDIR)

put-in-startup: guard-is-root
	install ./deploy/rss2discordwh-daemon.service /etc/systemd/system
	systemctl daemon-reload
	- systemctl enable rss2discordwh-daemon.service
	- systemctl restart rss2discordwh-daemon.service

remove-from-startup: guard-is-root
	- systemctl disable rss2discordwh-daemon.service
	- systemctl stop rss2discordwh-daemon.service
	rm -f /etc/systemd/system/rss2discordwh-daemon.service

uninstall: guard-is-root
	-rm -rf /opt/rss2discordwh
	make remove-from-startup

purge: guard-is-root
	make uninstall
	make deconfigure

deconfigure: guard-is-root
	-rm -rf /etc/rss2discordwh

configure: guard-is-root
	-mkdir -p /etc/rss2discordwh
	cp $(MKFILE) /etc/rss2discordwh/
	make -C /etc/rss2discordwh init-config
	rm /etc/rss2discordwh/Makefile

copy-install: guard-is-root
	-mkdir -p /opt/rss2discordwh/rss2discordwh
	cp -Rf ./rss2discordwh/. /opt/rss2discordwh/rss2discordwh/.
	cp -f ./Makefile /opt/rss2discordwh/Makefile

install: guard-is-root
	make uninstall
	make copy-install
	make configure
	make put-in-startup

guard-has-cfgdir:
	@ if [ "$(CFGDIR)" = "" ]; then \
        echo -e "Environment variable CFGDIR not set"; \
        exit 1; \
    fi

guard-is-root:
	@ if [ "$(shell id -u)" != "0" ]; then \
        echo -e "UID expected: 0; UID found: $(shell id -u). Try again with sudo."; \
        exit 1; \
    fi