# -*- make -*-
# (C) 2013 by Eugeniy Mikhailov, <evgmik@gmail.com>
# Processing of pandoc files 

CLEAN_TARGETS      += clean_md
REAL_CLEAN_TARGETS += real_clean_md

dest_dir_md ?= $(dest_dir)
destination_dirs += $(dest_dir_md)

md_files  = $(wildcard *.md)
tex_from_md  = $(md_files:%.md=%.tex)
pdf_from_md  = $(md_files:%.md=%.pdf)	
html_from_md = $(md_files:%.md=%.html)

md_src_dest_targets = $(md_files:%=$(dest_dir_md)/%)
md_fig_dest_targets = $(md_fig_files:%=$(dest_dir_md)/%)
tex_from_md_dest_targets = $(tex_from_md:%=$(dest_dir_md)/%)
pdf_from_md_dest_targets = $(pdf_from_md:%=$(dest_dir_md)/%)
html_from_md_dest_targets = $(html_from_md:%=$(dest_dir_md)/%)

# to disable preprocessor use
#PANDOC_PREPROCESSOR_CMD ?= cat 
#PANDOC_PREPROCESSOR_OPTIONS ?= 

# preprocessor on
PANDOC_PREPROCESSOR_CMD ?= gpp
PANDOC_PREPROCESSOR_OPTIONS ?= -U "" "" "(" "," ")" "(" ")" "\#" "\\" -M "<\#" "\n" " " " " "\n" "(" ")"
PANDOC_PREPROCESSOR ?= $(PANDOC_PREPROCESSOR_CMD) $(PANDOC_PREPROCESSOR_OPTIONS)

PANDOC_CMD := pandoc
PANDOC_COMMON_OPTIONS ?= --standalone --smart
PANDOC := $(PANDOC_CMD) $(PANDOC_COMMON_OPTIONS)

PANDOC_DATA_DIR ?= $(CONFIG_DIR)
PANDOC_META_DIR ?= $(CONFIG_DIR)
PANDOC_CSS_DIR ?= $(TOPDIR)/css_styles
PANDOC_CSS ?=

PANDOC_TEMPLATE ?=

ifneq ($(strip $(PANDOC_DATA_DIR)),)
	PANDOC += --data-dir=$(PANDOC_DATA_DIR)	
endif

ifneq ($(strip $(PANDOC_TEMPLATE)),)
	PANDOC += --template=$(PANDOC_TEMPLATE)
endif

# chose default name for css if it is not define
ifeq ($(strip $(PANDOC_CSS)),)
	ifneq ($(strip $(PANDOC_TEMPLATE)),)
		# non empty template name
		PANDOC_CSS = evmik_pandoc_$(PANDOC_TEMPLATE).css
	else
		# empty template name
		#PANDOC_CSS = evmik_pandoc.css
		PANDOC_CSS = evmik_pandoc_$(PANDOC_TEMPLATE).css
	endif
endif


PANDOC_HTML_METADATA ?= cat -
PANDOC_TEX_METADATA ?= cat - $(PANDOC_META_DIR)/tex_metadata.yaml
PANDOC_PDF_METADATA ?= $(PANDOC_TEX_METADATA)

PANDOC_HTML_OPTIONS ?= --section-divs  --toc 
PANDOC_TEX_OPTIONS ?= --latex-engine=pdflatex
PANDOC_PDF_OPTIONS ?= --latex-engine=pdflatex

ifneq ($(strip $(PANDOC_CSS)),)
	PANDOC_HTML_OPTIONS += --css=$(PANDOC_CSS_DIR)/$(PANDOC_CSS)
endif

html_md: $(html_from_md)

pdf_tex:  $(pdf_from_independent_tex)

pdf_md:  $(pdf_from_md)

tex_md: $(tex_from_md)



$(html_from_md): %.html : %.md $(md_fig_files) $(md_configs) $(md_includes)
	$(PANDOC_PREPROCESSOR) $< | $(PANDOC_HTML_METADATA) | $(PANDOC) -t html5 $(PANDOC_HTML_OPTIONS) -o $@
	
$(tex_from_md): %.tex : %.md $(md_fig_files) $(md_configs) $(md_includes)
	$(PANDOC_PREPROCESSOR) $< | $(PANDOC_TEX_METADATA) | $(PANDOC) -t latex $(PANDOC_TEX_OPTIONS) -o $@

$(pdf_from_md): %.pdf : %.md $(md_fig_files) $(md_configs) $(md_includes)
	$(PANDOC_PREPROCESSOR) $< | $(PANDOC_PDF_METADATA) | $(PANDOC) $(PANDOC_PDF_OPTIONS) -o $@


install_md_src: $(md_src_dest_targets) install_md_fig_files
$(md_src_dest_targets): $(dest_dir_md)/% : % | $(dest_dir_md)
ifneq ($(strip $(md_files)),)
	$(INSTALL) -m 0644 '$<' '$@'
endif

install_md_fig_files: $(md_fig_dest_targets)
$(md_fig_dest_targets): $(dest_dir_md)/% : % | $(dest_dir_md)
ifneq ($(strip $(md_fig_files)),)
	$(INSTALL) -m 0644 '$<' '$@'
endif

install_html_md: $(html_from_md_dest_targets) install_md_fig_files
$(html_from_md_dest_targets): $(dest_dir_md)/% : % | $(dest_dir_md)
ifneq ($(strip $(html_from_md)),)
	$(INSTALL) -m 0644 '$<' '$@'
endif

install_pdf_md: $(pdf_from_md_dest_targets)
$(pdf_from_md_dest_targets): $(dest_dir_md)/% : % | $(dest_dir_md)
ifneq ($(strip $(pdf_from_md)),)
	$(INSTALL) -m 0644 '$<' '$@'
endif

clean_md: clean_md_aux
	
real_clean_md: clean_md_tex clean_md_aux
ifneq ($(strip $(pdf_from_md)),)
	rm -f $(pdf_from_md)
endif
ifneq ($(strip $(html_from_md)),)
	rm -f $(html_from_md)
endif

clean_md_tex:
ifneq ($(strip $(tex_from_md)),)
	rm -f $(tex_from_md)
endif

clean_md_aux: 
ifneq ($(strip $(tex_from_md)),)
	rm -f $(tex_from_md:%.tex=%.dvi)
	rm -f $(tex_from_md:%.tex=%.log)
	rm -f $(tex_from_md:%.tex=%.aux)
	rm -f $(tex_from_md:%.tex=%.nav)
	rm -f $(tex_from_md:%.tex=%.out)
	rm -f $(tex_from_md:%.tex=%.snm)
	rm -f $(tex_from_md:%.tex=%.toc)
	rm -f $(tex_from_md:%.tex=%.vrb)
	rm -f $(tex_from_md:%.tex=%.blg)
	rm -f $(tex_from_md:%.tex=%.bbl)
	rm -f missfont.log
	rm -f *Notes.bib
endif