SHELL = /bin/bash
.POSIX_SHELL:

ifneq (,$(wildcard .bundle-env))
include .bundle-env
endif

ifeq (root,$(shell whoami))
check-root = @true
else
check-root = $(error this target requires root)
endif

ifeq (dom0,$(shell hostname))
check-dom0 = @true
check-domu = $(error this target must be run in the guest qube)
else
check-dom0 = $(error this target must be run in dom0)
check-domu = @true
endif

BUNDLEIN := .bundles/qubes-mgmt-salt


ifeq (apply, $(firstword $(MAKECMDGOALS)))
  # use the rest as arguments for "run"
  APPLY_ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS))
  # ...and turn them into do-nothing targets
  $(eval $(APPLY_ARGS):;@:)
endif



clean-workdir = git init -q -b $* && git diff --quiet && git diff --cached --quiet || (echo 'dirty tree; check git status' && false)

.PHONY: guard-domu
guard-domu:
	@ if [ "`hostname`" != "`qubesdb-read /name`" ]; then \
		echo "This task must be run in a guest domain"; \
		exit 1; \
	fi

.PHONY: create-bundle
create-bundle: guard-domu
	mkdir -p .bundles
	git bundle create - --all > .bundles/qubes-mgmt-salt

# cures common weird states (thanks xyhhx for the tip)
# also try `sudo rm -rf /var/cache/salt /srv/salt/_tops/*`
.PHONY: cure
cure:
	sudo rm -rf /var/cache/salt
	sudo rm -rf /srv/salt/_tops/user 
	qubesctl saltutil.clear_cache
	qubesctl saltutil.sync_all

.PHONY: pull pull/%
pull: pull/$(shell git branch --show-current)
pull/%:
	echo "check dom0"
	$(check-dom0)
	echo "clean workdir"
	$(clean-workdir)

	echo "creating bundle"
	qvm-run -p $(GUEST) "cd $(GUEST_REPO) && make create-bundle" </dev/null

	qvm-run -p $(GUEST) "cat $(GUEST_REPO)/.bundles/qubes-mgmt-salt" </dev/null >$(BUNDLEIN)

	git remote add $(GUEST) $(BUNDLEIN) || true

	git pull $(GUEST) $*:$*

	qvm-run -p $(GUEST) "cd $(GUEST_REPO) && git update-ref refs/remotes/dom0/$* $*" </dev/null

	@echo "updated branch $* from $(GUEST)"

install:
	install -D -oroot -groot -m0644 conf/z_user.conf /etc/salt/minion.d/z_user.conf
	install -D -oroot -groot -m0644 conf/overrides.conf /usr/local/etc/salt/minion.d/overrides.conf
	mkdir -p /srv/user
	ln -s $(CURDIR)/salt /srv/user/salt

.PHONY: apply
apply:
	install -D -oroot -groot -m0644 conf/z_user.conf /etc/salt/minion.d/z_user.conf
	install -D -oroot -groot -m0644 conf/overrides.conf /usr/local/etc/salt/minion.d/overrides.conf
	
	qubesctl top.enable topd
	qubesctl top.enable $(APPLY_ARGS)
	qubesctl --show-output --force-color --targets templates state.apply $(APPLY_ARGS)
	qubesctl top.disable $(APPLY_ARGS)