.PHONY: help init open close

PASSFILE     := $(CURDIR)/.passfile
PASSFILE_OPT := $(shell [ -f $(PASSFILE) ] && echo "-passfile $(PASSFILE)" || echo "")
VAULT        := $(CURDIR)/.vault
VIEW         := $(CURDIR)/vault

CACHED       := $(shell [ -f $(PASSFILE) ] && echo " [cached]" || echo "")
ISINIT       := $(shell [ -d $(VAULT) ] && echo " [initialized]" || echo "")
ISOPEN       := $(shell [ -d $(VIEW) ] && echo " [vault is open]" || echo "")

help: ## Display this message
	@echo "Usage:$(CACHED)$(ISINIT)$(ISOPEN)" >&2
	@sed -nE "s|^(.+):\\s+##\\s+(.+)\\s*$$|\\tmake \\1\\t- \\2|p" \
		$(lastword $(MAKEFILE_LIST)) >&2

init: ## Initialize the vault
	@if [ -d $(VAULT) ]; then \
		echo "Vault has already been initialized" >&2; \
		echo "Remove $(VAULT) to re-initialize" >&2; \
	else \
		mkdir -m700 $(VAULT); \
		gocryptfs -init -aessiv $(PASSFILE_OPT) $(VAULT); \
	fi

open: ## Open the vault
	@if [ -d $(VAULT) ] && [ ! -d $(VIEW) ]; then \
		mkdir -m700 $(VIEW); \
		gocryptfs -quiet $(PASSFILE_OPT) $(VAULT) $(VIEW); \
	fi
	@echo "Vault is open" >&2

close: ## Close the vault
	@if [ -d $(VAULT) ] && [ -d $(VIEW) ]; then \
		fusermount -u $(VIEW); \
		rmdir $(VIEW); \
	fi
	@echo "Vault is closed" >&2