#!/usr/bin/make -f

# resolve DEB_VERSION_UPSTREAM
include /usr/share/dpkg/pkg-info.mk

# generate documentation unless nodoc requested
ifeq (,$(filter nodoc,$(DEB_BUILD_OPTIONS)))
DOCS = README.html README.txt
CHANGELOGS = CHANGELOG.html CHANGELOG.txt
MANPAGES = debian/scaphandre.1
endif

# generate manual pages from output of clap-based Rust binary
#  arguments: 1:MANFILEPATH 2:COMMANDPATH 3:SUBCOMMAND(S)
_help2man = \
 $(eval suffix = $(lastword $(subst ., ,$(1))))\
 $(eval stem = $(patsubst %.$(suffix),%,$(1)))\
 help2man --section $(suffix) --no-info \
 --version-string='$(DEB_VERSION_UPSTREAM)' \
 --name $(shell $(2) $(3) --help | head --lines=1 | xargs -0 shell-quote --) \
 --output '$(stem)$(if $(3),-$(subst $() ,-,$(strip $(3)))).$(suffix)' \
 '$(2)$(if $(3), $(3))' \
 || { $(2) $(3) --help; false; }

%:
	dh $@ --with linktree

%.html: %.md
	cmark-gfm $< > $@

%.txt: %.md
	cmark-gfm --to plaintext $< > $@

execute_after_dh_auto_build-arch: $(DOCS) $(CHANGELOGS)

execute_after_dh_auto_build-indep:
	mdbook build --dest-dir docs
	rm -rf docs/FontAwesome

execute_after_dh_auto_install-arch: $(MANPAGES)

override_dh_installdocs:
	dh_installdocs --all -- $(DOCS)

override_dh_installchangelogs:
	dh_installchangelogs -- $(CHANGELOGS)

# build manpages
debian/scaphandre.1: debian/%.1: debian/scaphandre/usr/bin/%
	$(call _help2man,$@,$<)
	set -e; $(foreach x,stdout json prometheus,\
	 $(call _help2man,$@,$<,$x);)