SHELL = /bin/sh

# Requires img-ref-to-eps.sed script posted separately.
# Replace this with the basename of your file, w/o the extension.  E.g., "myfile.md" => "myfile".
DOC_NAME := Your Document Name Here

DOC_DATE := $(shell  date +'%B %d, %Y')

# Utilities
# ... change to suite.

PANDOC = /usr/local/bin/pandoc

PDFLATEX = /Library/TeX/texbin/pdflatex

PDFTOPS = /usr/local/bin/pdftops

# ... We prefer GNU tar.  For Homebrew / OSX:
TAR = /usr/local/bin/tar

W3M = /usr/local/bin/w3m



# For later
PANDOC_OPTIONS = --toc --reference-location=section --top-level-division=chapter --number-sections -V date='$(DOC_DATE)' --pdf-engine=xelatex
PANDOC_BEAMER_OPTIONS = --reference-location=section --top-level-division=chapter --number-sections --incremental --pdf-engine=xelatex
PANDOC_HTML_OPTIONS = --ascii --reference-location=block --css=standard.css
PANDOC_STUB_HTML_OPTIONS = --reference-location=section --top-level-division=section --ascii --reference-location=block 

MARKDOWN_EXTENSIONS = +autolink_bare_uris+ascii_identifiers 
LATEX_OPTIONS = -V "colorlinks=true, linkcolor=1E6B8C, links-as-notes=true, lof=true, lot=true"


.SUFFIXES:
.SUFFIXES: .md .pdf .epub .djvu .fb2 .ps .html .txt .info .orgmode .dvi .asciidoc .textile .rtf .opendoc .odt .docx .mediawiki

.PHONY: clean print openpdf openpub openhtml htmltar-clean


# NB: djvu not supported.
all:	pdf epub djvu fb2 ps stub-html html latex txt info orgmode dvi asciidoc textile rtf opendoc odt docx mediawiki
    # excluded:  beamer: breaks build


primary: pdf epub fb2 ps html txt

secondary: latex beamer stub-html info orgmode dvi asciidoc textile rtf opendoc mediawiki

tertiary: djvu odt docx beamer 


install:
	@echo "This is not implemented"
	false

uninstall:
	@echo "This is not implemented"
	false


# Quickview

openpdf: pdf
	open $(DOC_NAME).pdf

openepub: epub
	open $(DOC_NAME).epub

openhtml: html
	open $(DOC_NAME).html

openps: ps
	open $(DOC_NAME).ps

opentxt: txt
	open $(DOC_NAME).txt



# Formats.  Think about these

# ... Primary outputs

pdf: $(DOC_NAME).pdf

epub: $(DOC_NAME).epub

fb2: $(DOC_NAME).fb2

ps: $(DOC_NAME).ps

html: $(DOC_NAME).html

txt: $(DOC_NAME).txt


# ... Secondary otuputs

latex: $(DOC_NAME).tex

beamer: $(DOC_NAME)-beamer.pdf

stub-html: $(DOC_NAME)-stub.html

info:  $(DOC_NAME).info

orgmode: $(DOC_NAME).org

dvi: $(DOC_NAME).dvi

asciidoc: $(DOC_NAME).asciidoc

textile: $(DOC_NAME).textile

rtf: $(DOC_NAME).rtf

opendoc: $(DOC_NAME).opendoc

mediawiki: $(DOC_NAME).mediawiki

# ... Tertiary Outputs

# See note at $(DOC_NAME).djvu target
# djvu: $(DOC_NAME).djvu
djvu: 
	@echo "DjVu is not supported"
	true

odt: $(DOC_NAME).odt

docx: $(DOC_NAME).docx

htmltar: $(DOC_NAME)-html.tar.gz htmltar-clean
	@echo "htmltar"


# Utility outputs

# Swap any image file formats for eps
epsimg: $(DOC_NAME)-epsimg.md 

$(DOC_NAME)-epsimg.md: $(DOC_NAME).md
	./img-ref-to-eps.sed $(DOC_NAME).md > $(DOC_NAME)-epsimg.md



# For real making

$(DOC_NAME).pdf: $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) $(LATEX_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=latex -o $(DOC_NAME).pdf $(DOC_NAME).md

$(DOC_NAME).epub: $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=epub -o $(DOC_NAME).epub $(DOC_NAME).md

# Mon Dec 18 04:44:11 UTC 2017
# See, generally: https://commons.wikimedia.org/wiki/Help:Creating_a_DjVu_file
#
# I've chased a few leads trying to get a DjVu generator.  No dice.
#  - djvudigital needs a licence-incompatible Ghostscript driver.  Which 
#    fails to build under OSX.
#  - pdf2djvu is another package.  It's available for Debian,  and on 
#    Github, but not in Homebrew.  Github source fails with a UTF8.h 
#    error.  That seems to be under poppler ..
#  - poppler, also on Github, also fails to build on OSX.
#
# That being attempted, I'm going to abandon DjVu as an endpoint for now, 
# but leave this note as to why.
# - dredmorbius

#$(DOC_NAME).djvu: pdf $(DOC_NAME).md
#	true

$(DOC_NAME).fb2: $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=fb2 -o $(DOC_NAME).fb2 $(DOC_NAME).md

$(DOC_NAME).ps: pdf $(DOC_NAME).md
	$(PDFTOPS) $(DOC_NAME).pdf $(DOC_NAME).ps

$(DOC_NAME).html:  $(DOC_NAME).md
	$(PANDOC) --standalone --ascii $(PANDOC_OPTIONS) $(PANDOC_HTML_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=html -o $(DOC_NAME).html $(DOC_NAME).md

$(DOC_NAME)-stub.html: $(DOC_NAME).md
	$(PANDOC) --ascii $(PANDOC_STUB_HTML_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=html -o $(DOC_NAME)-stub.html $(DOC_NAME).md

$(DOC_NAME).txt: html $(DOC_NAME).md
	$(W3M) -dump -cols 80 $(DOC_NAME).html > $(DOC_NAME).txt

$(DOC_NAME).tex: epsimg all-img $(DOC_NAME).md
	$(PANDOC) --standalone $(PANDOC_OPTIONS) $(LATEX_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=latex -o $(DOC_NAME).tex $(DOC_NAME)-epsimg.md

$(DOC_NAME)-beamer.pdf: epsimg all-img $(DOC_NAME).md
	@echo "beamer: not implemented"
	true
	$(PANDOC) --standalone $(PANDOC_BEAMER_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=beamer -o $(DOC_NAME)-beamer.pdf $(DOC_NAME).md

$(DOC_NAME).info:  $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=texinfo -o $(DOC_NAME).info $(DOC_NAME).md

$(DOC_NAME).org: $(DOC_NAME).md
	$(PANDOC) --standalone --from=markdown$(MARKDOWN_EXTENSIONS) --to=org -o $(DOC_NAME).org $(DOC_NAME).md

$(DOC_NAME).dvi: latex $(DOC_NAME).md
	# Yes, twice.  Thanks, LaTeX....
	$(PDFLATEX)  $(LATEX_OPTIONS) -output-format dvi -halt-on-error $(DOC_NAME).tex 2>pdflatex.log
	$(PDFLATEX) $(LATEX_OPTIONS) -output-format dvi -halt-on-error $(DOC_NAME).tex 2>pdflatex.log

$(DOC_NAME).asciidoc:  $(DOC_NAME).md
	$(PANDOC) --from=markdown$(MARKDOWN_EXTENSIONS) --to=asciidoc -o $(DOC_NAME).asciidoc $(DOC_NAME).md

$(DOC_NAME).textile:  $(DOC_NAME).md
	$(PANDOC) --from=markdown$(MARKDOWN_EXTENSIONS) --to=textile -o $(DOC_NAME).textile $(DOC_NAME).md

$(DOC_NAME).rtf:  $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=rtf -o $(DOC_NAME).rtf $(DOC_NAME).md

$(DOC_NAME).opendoc:  $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=opendocument -o $(DOC_NAME).opendoc $(DOC_NAME).md

$(DOC_NAME).odt:  $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=odt -o $(DOC_NAME).odt $(DOC_NAME).md

$(DOC_NAME).docx:  $(DOC_NAME).md
	$(PANDOC) $(PANDOC_OPTIONS) --from=markdown$(MARKDOWN_EXTENSIONS) --to=docx -o $(DOC_NAME).docx $(DOC_NAME).md

$(DOC_NAME).mediawiki:  $(DOC_NAME).md
	$(PANDOC) --from=markdown$(MARKDOWN_EXTENSIONS) --to=mediawiki -o $(DOC_NAME).mediawiki $(DOC_NAME).md

$(DOC_NAME)-html.tar.gz: $(DOC_NAME).html standard.css images
	@echo "$(DOC_NAME)-html.tar.gz"
	mkdir $(DOC_NAME)-html
	cd $(DOC_NAME)-html
	ln -s ../$(DOC_NAME).html $(DOC_NAME)-html/$(DOC_NAME).html 
	ln -s ../standard.css $(DOC_NAME)-html/standard.css 
	ln -s ../images $(DOC_NAME)-html/images 
	cd ..
	$(TAR) --dereference -czvf $(DOC_NAME)-html.tar.gz $(DOC_NAME)-html/ --owner=-2 --group=-2

htmltar-clean: $(DOC_NAME)-html.tar.gz
	@echo "htmltar-clean"
	rm -rf $(DOC_NAME)-html


# Images
# ... We want to have EPS versions of any non-EPS files, for LaTeX
#     so ... convert all image files to eps.

IMG_DIR=images
EPS_DIR=images-eps

# We can handle any of about 193 formats Imagemagick will read, but 
# let's start with some basics
# Thanks @kebs: https://stackoverflow.com/a/47857821/9105048

IMG_EXT=bmp dot gif jpg jpeg png raw tiff xcf pnm ppm ps

# ... Source formats

IMG_FILES = $(wildcard $(IMG_DIR)/*)

# Rename files s/./_/ so: img1.gif => img1_gif Then add extension

IMG_FILES2 = $(subst .,_,$(IMG_FILES))

EPS_FILES = $(patsubst $(IMG_DIR)/%,$(EPS_DIR)/%.eps,$(IMG_FILES2))

all-img: $(EPS_DIR) $(EPS_FILES) 
    @echo "all-img: done"

$(EPS_DIR) :
	mkdir $(EPS_DIR)

$(foreach \
    prereq, \
    $(IMG_EXT), \
    $(eval $(EPS_DIR)/%_$(prereq).eps: $(IMG_DIR)/%.$(prereq); convert -format eps $$< $$@) \
    )


# Debuggery

print: 
	@echo Variables DEBUG
	@echo SHELL: $(SHELL)
	@echo TAR: $(TAR)
	@echo DATE: $(DOC_DATE)
	@echo IMG_DIR: $(IMG_DIR)
	@echo EPS_DIR: $(EPS_DIR)
	@echo IMG_EXT: $(IMG_EXT)
	@echo IMG_FILES: $(IMG_FILES)
	@echo IMG_FILES2: $(IMG_FILES2)
	@echo EPS_FILES: $(EPS_FILES)

# Your mother does not live here 

clean:
	rm -f $(DOC_NAME).pdf $(DOC_NAME).epub $(DOC_NAME).fb2 $(DOC_NAME).djvu $(DOC_NAME).ps $(DOC_NAME).html $(DOC_NAME)-stub.html $(DOC_NAME).txt $(DOC_NAME)-epsimg.md $(DOC_NAME).tex $(DOC_NAME)-beamer.pdf $(DOC_NAME).info $(DOC_NAME).org $(DOC_NAME).dvi $(DOC_NAME).asciidoc $(DOC_NAME).textile $(DOC_NAME).rtf $(DOC_NAME).opendoc $(DOC_NAME).odt $(DOC_NAME).docx $(DOC_NAME).mediawiki
	# Latex
	rm -f $(DOC_NAME).log $(DOC_NAME).aux $(DOC_NAME).out texput.log pdflatex.log $(DOC_NAME).toc
	# EPS
	rm -f $(EPS_FILES)
	rm -rf $(EPS_DIR)
	# html-tar
	rm -rf $(DOC_NAME)-html/
	rm -f $(DOC_NAME)-html.tar.gz