# Makefile for Trellis documentation created with Sphinx

# use bash for pushd/popd, and to fail quickly. virtualenv's activate
# has undefined variables, so no -u
SHELL = bash -e -o pipefail

# You can set these variables from the command line.
SPHINXOPTS   ?=
SPHINXBUILD  ?= sphinx-build
SOURCEDIR    ?= .
BUILDDIR     ?= _build

VENV_NAME    := doc_venv

# Put it first so that "make" without argument is like "make help".
help: $(VENV_NAME)
	source ./$(VENV_NAME)/bin/activate ;\
	$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

.PHONY: help lint reload Makefile test

# Create the virtualenv with all the tools installed
$(VENV_NAME):
	virtualenv -p python3 $(VENV_NAME) ;\
	source ./$(VENV_NAME)/bin/activate ;\
	pip install -r requirements.txt

# automatically reload changes in browser as they're made
reload: $(VENV_NAME)
	source $</bin/activate ; set -u ;\
	sphinx-reload $(SOURCEDIR)

# build multiple versions
multiversion: $(VENV_NAME) Makefile
	source $</bin/activate ; set -u ;\
	sphinx-multiversion "$(SOURCEDIR)" "$(BUILDDIR)/multiversion" $(SPHINXOPTS)
	cp "$(SOURCEDIR)/_templates/meta_refresh.html" "$(BUILDDIR)/multiversion/index.html"

# lint and link verification. linkcheck is built into sphinx
test: lint spelling linkcheck

lint: doc8

doc8: $(VENV_NAME) | $(OTHER_REPO_DOCS)
	source $</bin/activate ; set -u ;\
	doc8 --max-line-length 119 \
	     $$(find . -name \*.rst ! -path "*venv*" ! -path "*vendor*" ! -path "*repos*" )

# clean up
clean:
	rm -rf $(BUILDDIR)

clean-all: clean
	rm -rf $(VENV_NAME)

# Catch-all target: route all unknown targets to Sphinx using the new
# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
%: $(VENV_NAME) | $(OTHER_REPO_DOCS)
	source $</bin/activate ; set -u ;\
	$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)