# You can set these variables from the command line.
POETRY        = $(shell which poetry)
SPHINXOPTS    = -j auto
SPHINXBUILD   = $(POETRY) run sphinx-build
PAPER         =
BUILDDIR      = _build
SOURCEDIR     = source

# Internal variables.
PAPEROPT_a4     = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) $(SOURCEDIR)
TESTSPHINXOPTS  = $(ALLSPHINXOPTS) -W --keep-going

# the i18n builder cannot share the environment and doctrees with the others
I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) $(SOURCEDIR)

.PHONY: all
all: dirhtml

.PHONY: setup
setup:
	./_utils/setup.sh

.PHONY: clean
clean:
	rm -rf $(BUILDDIR)/*

.PHONY: preview
preview:
	$(POETRY) run sphinx-autobuild -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml --port 5500

.PHONY: dirhtml
dirhtml: setup
	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
	@echo
	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."

.PHONY: singlehtml
singlehtml: setup
	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
	@echo
	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."

.PHONY: dummy
dummy: 	setup
	$(SPHINXBUILD) -b dummy $(ALLSPHINXOPTS) $(BUILDDIR)/dummy
	@echo
	@echo "Build finished. Dummy builder generates no files."

.PHONY: linkcheck
linkcheck: setup
	$(SPHINXBUILD) -b linkcheck $(SOURCEDIR) $(BUILDDIR)/linkcheck

.PHONY: multiversion
multiversion:
	git diff --quiet || >&2 echo "\033[31;1;4mWARNING: Uncommitted changes will not be included in ./_build\033[0m"
	@mkdir -p $(HOME)/.cache/pypoetry/virtualenvs
	$(POETRY) run sphinx-multiversion source $(BUILDDIR)/dirhtml
	@echo
	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."

.PHONY: multiversionpreview
multiversionpreview: multiversion
	$(POETRY) run python3 -m http.server 5500 --directory $(BUILDDIR)/dirhtml