add Makefile

Makefile

@@ -0,0 +1,37 @@
+PROJECT      := certificate-expire-check
+USER         := $(PROJECT)
+INSTALL_DIR  := /etc/$(PROJECT)
+CONF_DIR     := $(INSTALL_DIR)/conf
+SCRIPT       := $(INSTALL_DIR)/main.py
+CRON_SCHEDULE:= 0 0 */10 * *
+
+.PHONY: all user install cron clean
+
+all: user install cron
+
+user:
+	@id -u $(USER) &>/dev/null || \
+	sudo useradd --system --no-create-home --shell /usr/sbin/nologin $(USER) && \
+	echo "User '$(USER)' has been created."
+	@echo "User '$(USER)' already exists - skip it."
+
+# Copy the project to /etc and set permissions
+install: user
+	sudo mkdir -p $(INSTALL_DIR)
+	sudo cp -r ./* $(INSTALL_DIR)
+	sudo chown -R $(USER):$(USER) $(INSTALL_DIR)
+	@echo "The project is installed in $(INSTALL_DIR) and permissions are assigned to user '$(USER)'."
+
+# Add a cron job as a user
+cron: install
+	@CRON_LINE="$(CRON_SCHEDULE) $(USER) /usr/bin/python3 $(SCRIPT) >> /var/log/$(PROJECT).log 2>&1"
+	# add CRON_LINE in user crontab if not exists
+	@sudo crontab -u $(USER) -l 2>/dev/null | grep -F "$$CRON_LINE" >/dev/null || \
+	( sudo crontab -u $(USER) -l 2>/dev/null; echo "$$CRON_LINE" ) | sudo crontab -u $(USER) -
+	@echo "Cron entry for user '$(USER)' is set: $$CRON_LINE"
+
+clean:
+	-sudo crontab -u $(USER) -r
+	-sudo userdel $(USER)
+	-sudo rm -rf $(INSTALL_DIR)
+	@echo The cleanup is complete."