#
# Makefile for Spanish Python Documentation
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#
#  based on: https://github.com/python/python-docs-pt-br/blob/3.8/Makefile
#

# Configuration

CPYTHON_PATH        := cpython   #Current commit for this upstream repo is setted by the submodule
BRANCH              := 3.7
LANGUAGE_TEAM       := python-docs-es
LANGUAGE            := es

# Internal variables
VENV                := $(shell realpath ./venv)
PYTHON              := $(shell which python3)
WORKDIRS            := $(VENV)/workdirs
CPYTHON_WORKDIR     := $(WORKDIRS)/cpython
LOCALE_DIR          := $(WORKDIRS)/locale
JOBS                := auto
SPHINXERRORHANDLING := "-W"
TRANSIFEX_PROJECT   := python-newest
POSPELL_TMP_DIR     := .pospell


.PHONY: help
help:
	@echo "Please use 'make <target>' where <target> is one of:"
	@echo " build        Build an local version in html, with warnings as errors"
	@echo " push         Update translations and Transifex config in the repository"
	@echo " pull         Download translations from Transifex; calls 'venv'"
	@echo " tx-config    Recreate an up-to-date project .tx/config; calls 'pot'"
	@echo " pot          Create/Update POT files from source files"
	@echo " serve        Serve a built documentation on http://localhost:8000"
	@echo " spell        Check spelling, storing output in $(POSPELL_TMP_DIR)"
	@echo " progress     To compute current progression on the tutorial" 
	@echo ""


# build: build the documentation using the translation files currently available
#        at the moment. For most up-to-date docs, run "tx-config" and "pull"
#        before this. If passing SPHINXERRORHANDLING='', warnings will not be
#        treated as errors, which is good to skip simple Sphinx syntax mistakes.
.PHONY: build
build: setup
	$(MAKE) -C $(CPYTHON_WORKDIR)/Doc/              \
		VENVDIR=$(CPYTHON_WORKDIR)/Doc/venv         \
		PYTHON=$(PYTHON)                            \
		SPHINXERRORHANDLING=$(SPHINXERRORHANDLING)  \
		SPHINXOPTS='-q --keep-going -j$(JOBS)       \
			-D locale_dirs=$(LOCALE_DIR)            \
			-D language=$(LANGUAGE)                 \
			-D gettext_compact=0                    \
			-D latex_engine=xelatex                 \
			-D latex_elements.inputenc=             \
			-D latex_elements.fontenc='             \
		html;
		
		@echo "Success! Open file://$(CPYTHON_WORKDIR)/Doc/build/html/index.html, " \
		      "or run 'make serve' to see them in http://localhost:8000";


# push: push new translation files and Transifex config files to repository,
#       if any. Do nothing if there is no file changes. If GITHUB_TOKEN is set,
#       then assumes we are in GitHub Actions, requiring different push args
.PHONY: push
push:
	if ! git status -s | egrep '\.po|\.tx/config'; then                     \
		echo "Nothing to commit";                                           \
		exit 0;                                                             \
	else                                                                    \
		git add *.po **/*.po .tx/config;                                    \
		git commit -m 'Update translations from Transifex';                 \
		if [ $(GITHUB_TOKEN) != "" ]; then                                  \
			header="$(echo -n token:"$(GITHUB_TOKEN)" | base64)";           \
			git -c http.extraheader="AUTHORIZATION: basic $(header)" push;  \
		else                                                                \
			git push;                                                       \
		fi;                                                                 \
	fi


# pull: Download translations files from Transifex, and apply line wrapping.
#       For downloading new translation files, first run "tx-config" target
#       to update the translation file mapping.
.PHONY: pull
pull: venv
	$(VENV)/bin/tx pull --force --language=$(LANGUAGE) --parallel
	$(VENV)/bin/powrap --quiet *.po **/*.po


# tx-config: After running "pot", create a new Transifex config file by
#            reading pot files generated, then tweak this config file to
#            LANGUAGE.
.PHONY: tx-config
tx-config: pot
	cd $(CPYTHON_WORKDIR)/Doc/locales;                  \
	rm -rf .tx;                                         \
	$(VENV)/bin/sphinx-intl create-txconfig;            \
	$(VENV)/bin/sphinx-intl update-txconfig-resources   \
	    --transifex-project-name=$(TRANSIFEX_PROJECT)   \
	    --locale-dir .                                  \
	    --pot-dir pot;
	
	cd $(OLDPWD)
	mv $(CPYTHON_WORKDIR)/Doc/locales/.tx/config .tx/config
	
	sed -i .tx/config                                 \
	    -e '/^source_file/d'                          \
	    -e 's|<lang>/LC_MESSAGES/||'                  \
	    -e "s|^file_filter|trans.$(LANGUAGE)|"


# pot: After running "setup" target, run a cpython Makefile's target
#      to generate .pot files under $(CPYTHON_WORKDIR)/Doc/locales/pot
.PHONY: pot
pot: setup
	$(MAKE) -C $(CPYTHON_WORKDIR)/Doc/          \
		VENVDIR=$(CPYTHON_WORKDIR)/Doc/venv     \
		PYTHON=$(PYTHON)                        \
		ALLSPHINXOPTS='-E -b gettext            \
			-D gettext_compact=0                \
			-d build/.doctrees .                \
			locales/pot'                        \
		build


# setup: After running "venv" target, prepare that virtual environment with
#        a local clone of cpython repository and the translation files.
#        If the directories exists, only update the cpython repository and
#        the translation files copy which could have new/updated files.
.PHONY: setup
setup: venv
	# Setup the main clone
	git submodule sync
	git submodule update --init --force $(CPYTHON_PATH)
	# Setup the current work directory
	if ! [ -d $(CPYTHON_WORKDIR) ]; then                                    \
		rm -fr $(WORKDIRS);                                                 \
		mkdir -p $(WORKDIRS);                                               \
		git clone $(CPYTHON_PATH) $(CPYTHON_WORKDIR);                       \
		$(MAKE) -C $(CPYTHON_WORKDIR)/Doc                                   \
			VENVDIR=$(CPYTHON_WORKDIR)/Doc/venv                             \
			PYTHON=$(PYTHON) venv;                                          \
	fi
	
	# Setup translation files
	if ! [ -d $(LOCALE_DIR)/$(LANGUAGE)/LC_MESSAGES/ ]; then                \
		mkdir -p $(LOCALE_DIR)/$(LANGUAGE)/LC_MESSAGES/;                    \
	fi;                                                                     \
	cp --parents *.po **/*.po $(LOCALE_DIR)/$(LANGUAGE)/LC_MESSAGES/        \


# venv: create a virtual environment which will be used by almost every
#       other target of this script
.PHONY: venv
venv:
	if [ ! -d $(VENV) ]; then                                            \
		$(PYTHON) -m venv --prompt $(LANGUAGE_TEAM) $(VENV);             \
	fi
	
	$(VENV)/bin/python -m pip install -q -r requirements.txt 2> $(VENV)/pip-install.log
	
	if grep -q 'pip install --upgrade pip' $(VENV)/pip-install.log; then \
		$(VENV)/bin/pip install -q --upgrade pip;                        \
	fi


# serve: serve the documentation in a simple local web server, using cpython
#        Makefile's "serve" target. Run "build" before using this target.
.PHONY: serve
serve:
	$(MAKE) -C $(CPYTHON_WORKDIR)/Doc serve


# list files for spellchecking
SRCS := $(wildcard *.po **/*.po)
DESTS = $(addprefix $(POSPELL_TMP_DIR)/out/,$(patsubst %.po,%.txt,$(SRCS)))


# spell: run spell checking tool in all po files listed in SRCS variable,
#        storing the output in text files DESTS for proofreading.  The
#        DESTS target run the spellchecking, while the typos.txt target
#        gather all reported issues in one file, sorted without redundancy
.PHONY: spell
spell: venv $(DESTS) $(POSPELL_TMP_DIR)/typos.txt

$(POSPELL_TMP_DIR)/out/%.txt: %.po dict
	@echo "Checking $< ..."
	@mkdir -p $(@D)
	@$(VENV)/bin/pospell -l $(LANGUAGE) -p dict $< > $@ || true

$(POSPELL_TMP_DIR)/typos.txt:
	@echo "Gathering all typos in $(POSPELL_TMP_DIR)/typos.txt ..."
	@cut -d: -f3- $(DESTS) | sort -u > $@


# clean: remove all .mo files and the venv directory that may exist and
#        could have been created by the actions in other targets of this script
.PHONY: clean
clean:
	rm -fr $(VENV)
	rm -rf $(POSPELL_TMP_DIR)
	find -name '*.mo' -delete

.PHONY: progress
progress: venv
	$(VENV)/bin/python scripts/print_percentage.py