PY?=python
PELICAN?=$(VENV)/pelican
PELICANOPTS=

BASEDIR=$(CURDIR)
INPUTDIR=$(BASEDIR)/content
OUTPUTDIR=$(BASEDIR)/output
CONFFILE=$(BASEDIR)/pelicanconf.py
PUBLISHCONF=$(BASEDIR)/publishconf.py

GITHUB_PAGES_BRANCH=gh-pages

DEBUG ?= 0
ifeq ($(DEBUG), 1)
	PELICANOPTS += -D
endif

RELATIVE ?= 0
ifeq ($(RELATIVE), 1)
	PELICANOPTS += --relative-urls
endif

help:
	@echo 'Makefile for a pelican Web site                                           '
	@echo '                                                                          '
	@echo 'Usage:                                                                    '
	@echo '   make submodule                      initialize git submodules          '
	@echo '   make html                           (re)generate the web site          '
	@echo '   make clean                          remove the generated files         '
	@echo '   make regenerate                     regenerate files upon modification '
	@echo '   make publish                        generate using production settings '
	@echo '   make serve [PORT=8000]              serve site at http://localhost:8000'
	@echo '   make serve-global [SERVER=0.0.0.0]  serve (as root) to $(SERVER):80    '
	@echo '   make devserver [PORT=8000]          start/restart develop_server.sh    '
	@echo '   make stopserver                     stop local server                  '
	@echo '   make github                         upload the web site via gh-pages   '
	@echo '                                                                          '
	@echo 'Set the DEBUG variable to 1 to enable debugging, e.g. make DEBUG=1 html   '
	@echo 'Set the RELATIVE variable to 1 to enable relative urls                    '
	@echo '                                                                          '

.PHONY: submodule
submodule:
	git submodule init
	git submodule update


html: | venv
	$(PELICAN) $(INPUTDIR) -o $(OUTPUTDIR) -s $(CONFFILE) $(PELICANOPTS)

clean:
	[ ! -d $(OUTPUTDIR) ] || rm -rf $(OUTPUTDIR)

regenerate: | venv
	$(PELICAN) -r $(INPUTDIR) -o $(OUTPUTDIR) -s $(CONFFILE) $(PELICANOPTS)

serve: | venv
ifdef PORT
	cd $(OUTPUTDIR) && $(VENV)/python -m pelican.server $(PORT)
else
	cd $(OUTPUTDIR) && $(VENV)/python -m pelican.server
endif

serve-global: | venv
ifdef SERVER
	cd $(OUTPUTDIR) && $(VENV)/python -m pelican.server 80 $(SERVER)
else
	cd $(OUTPUTDIR) && $(VENV)/python -m pelican.server 80 0.0.0.0
endif


devserver: export PY=$(VENV)/python
devserver: | venv
ifdef PORT
	$(BASEDIR)/develop_server.sh restart $(PORT)
else
	$(BASEDIR)/develop_server.sh restart
endif

stopserver: export PY=$(VENV)/python
stopserver: | venv
	$(BASEDIR)/develop_server.sh stop
	@echo 'Stopped Pelican and SimpleHTTPServer processes running in background.'

publish: | venv
	$(PELICAN) $(INPUTDIR) -o $(OUTPUTDIR) -s $(PUBLISHCONF) $(PELICANOPTS)

github: submodule publish | venv
	$(VENV)/ghp-import -m "Generate Pelican site" -b $(GITHUB_PAGES_BRANCH) $(OUTPUTDIR)
	git push origin $(GITHUB_PAGES_BRANCH)

.PHONY: html help clean regenerate serve serve-global devserver publish ssh_upload rsync_upload dropbox_upload ftp_upload s3_upload cf_upload github


# Automatically manage Python virtual environment
include Makefile.venv
Makefile.venv:
	curl \
		-o Makefile.fetched \
		-L "https://github.com/sio/Makefile.venv/raw/v2020.08.14/Makefile.venv"
	echo "5afbcf51a82f629cd65ff23185acde90ebe4dec889ef80bbdc12562fbd0b2611 *Makefile.fetched" \
		| sha256sum --check - \
		&& mv Makefile.fetched Makefile.venv
VENVDIR:=$(abspath $(VENVDIR))
export PELICAN