CPUS ?= $(shell cat /proc/cpuinfo | grep processor | wc -l || echo 1)
MAKEFLAGS += --jobs=$(CPUS)

IS_UBUNTU_1404=$(shell lsb_release -r | grep 14.04 > /dev/null && echo yes || echo no)
ifeq ($IS_UBUNTU_1404,"yes")
    PY=python2.7
else
    PY=python3
endif

PELICAN=pelican
PELICANOPTS=

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

# FTP_HOST=localhost
# FTP_USER=anonymous
# FTP_TARGET_DIR=/

SSH_HOST=173.249.40.201
SSH_PORT=21
SSH_USER=pschoen
SSH_TARGET_DIR=/data/nginx/phschoen.de/

# S3_BUCKET=my_s3_bucket

# DROPBOX_DIR=~/Dropbox/Public/

help:
	@echo 'Makefile for a pelican Web site                                        '
	@echo '                                                                       '
	@echo 'Usage:                                                                 '
	@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                       serve site at http://localhost:8000'
	@echo '   make devserver                   start/restart develop_server.sh    '
	@echo '   make stopserver                  stop local server                  '
	@echo '   ssh_upload                       upload the web site via SSH        '
	@echo '   rsync_upload                     upload the web site via rsync+ssh  '
	@echo '   dropbox_upload                   upload the web site via Dropbox    '
	@echo '   ftp_upload                       upload the web site via FTP        '
	@echo '   s3_upload                        upload the web site via S3         '
	@echo '   github                           upload the web site via gh-pages   '
	@echo '                                                                       '


# generate thubnails
thumb-img:

IMAGE_ORG_DIR=$(INPUTDIR)/images_org
IMAGE_DIR=$(INPUTDIR)/images
IMG_SIZES=200 375 480 800 1600
IMG_FILES=$(shell find $(IMAGE_ORG_DIR)/ -type f -name '*.jpg')
IMG_FILES+=$(shell find $(IMAGE_ORG_DIR)/ -type f -name '*.png')

img: $(IMAGE_DIR)

$(IMAGE_DIR):
	mkdir -p $@

define img-out-name
$(dir $(patsubst $(IMAGE_ORG_DIR)%,$(IMAGE_DIR)%, $(1)))$(2)/$(notdir $(1))
endef

img: copy-others

copy-others:
	cp $(IMAGE_ORG_DIR)/* $(IMAGE_DIR)/ -r

$(foreach size, $(IMG_SIZES),                         \
	$(foreach img, $(IMG_FILES),                      \
	$(eval img:$(call img-out-name, $(img),$(size)))  \
))

define convert-rule
$(1):$(2)
	mkdir -p $(dir $(1))
	convert $(2) -resize $(3)x$(3)^ $(1)

endef

$(foreach size, $(IMG_SIZES),                                                              \
	$(foreach img, $(IMG_FILES),                                                           \
		$(eval $(call convert-rule, $(call img-out-name, $(img),$(size)),$(img),$(size)) ) \
	)                                                                                      \
)

$(IMAGE_DIR)%.png: $(IMAGE_ORG_DIR)%.png
	mkdir -p $(dir $@)
	cp $< $@

$(IMAGE_DIR)%.jpg: $(IMAGE_ORG_DIR)%.jpg
	mkdir -p $(dir $@)
	cp $< $@

img-clean:
	rm $(IMAGE_DIR) -rf

html: clean $(OUTPUTDIR)/index.html

$(OUTPUTDIR)/%.html:
	$(PELICAN) $(INPUTDIR) -o $(OUTPUTDIR) -s $(CONFFILE) $(PELICANOPTS)

clean: img-clean
	[ ! -d $(OUTPUTDIR) ] || find $(OUTPUTDIR) -mindepth 1 -delete

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

serve: $(OUTPUTDIR)
	cd $(OUTPUTDIR) && $(PY) -m pelican.server

devserver:
	killall $(PY) pelican || true
	$(BASEDIR)/develop_server.sh restart

stopserver:
	kill -9 `cat pelican.pid`
	kill -9 `cat srv.pid`
	@echo 'Stopped Pelican and SimpleHTTPServer processes running in background.'

publish:
	killall $(PY) pelican || true
	$(PELICAN) --debug $(INPUTDIR) -o $(OUTPUTDIR) -s $(PUBLISHCONF) $(PELICANOPTS)

ssh_upload: publish
	scp -vP $(SSH_PORT) -r $(OUTPUTDIR)/* $(SSH_USER)@$(SSH_HOST):$(SSH_TARGET_DIR)

rsync_upload: publish
	rsync -e "ssh -p $(SSH_PORT)" -P -rvz --delete $(OUTPUTDIR)/ $(SSH_USER)@$(SSH_HOST):$(SSH_TARGET_DIR) --cvs-exclude

dropbox_upload: publish
	cp -r $(OUTPUTDIR)/* $(DROPBOX_DIR)

ftp_upload: publish
	lftp ftp://$(FTP_USER)@$(FTP_HOST) -e "mirror -R $(OUTPUTDIR) $(FTP_TARGET_DIR) ; quit"

s3_upload: publish
	s3cmd sync $(OUTPUTDIR)/ s3://$(S3_BUCKET) --acl-public --delete-removed

github: publish
	ghp-import $(OUTPUTDIR)
	git push origin gh-pages

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