stem = eut
source_baseurl = http://euwiki.org/
source_basename = EUT/2nd-edition

# work around in mediawiki bug parsing blockquote tags on same line
re_blockquote = s|\n*(</?blockquote>)\n*|\n$$1\n|g

# work around modest URL parsing <https://github.com/jgm/pandoc/issues/1838>
re_urlencode = s|\bhttp[^\s\"]+?\K(--+)|uri_escape($$1, "-")|eg

templates = template.tex header.tex before.tex after.tex

filters = ./pandoc-filter-sections ./pandoc-filter-bib ./pandoc-filter-iri

export PANDOC_CITEPROC_FILE = $(stem).bib

# To produce final document: make -B STATUS=final
STATUS ?= draft

args_filter += $(filters:%=--filter %)
args_filter += $(PANDOC_CITEPROC_FILE:%=--bibliography=%)
args_meta += -V lang=english -V langoption=variant=british
args_meta += -V title="Ensuring utmost transparency"
args_meta += -V subtitle="Free Software and Open Standards under the Rules of Procedure of the European Parliament"
args_meta += -V author="Carlo Piana" -V author="Ulf Öberg"
args_meta += -V date=""
args_latex += --template=template.tex --latex-engine=xelatex
args_latex += -H header.tex -B before.tex -A after.tex
args_latex += -V mainfont="Lora" -V sansfont="Quattrocento Sans" -V monofont="Inconsolata"
args_latex += -V documentclass=memoir -V headstyles=komalike -V chapterstyle=ell
args_latex += -V classoption=titlepage -V classoption=$(STATUS)
flavors = a4 book ebook
args_a4 = -V papersize=a4paper -V fontsize=10pt -V classoption=oneside
args_book = -V papersize=b5paper -V fontsize=10pt -V classoption=twoside
args_ebook = -V papersize=ebook -V fontsize=12pt -V classoption=oneside

all: $(flavors:%=$(stem)-%.pdf)

download:
	wget -o $(stem).raw '$(source_baseurl)index.php?title=$(source_basename)&action=edit'

$(stem).mediawiki: $(stem).raw
	perl -0777 -MHTML::Entities -MURI::Escape -p \
	-e 's|.*<textarea[^>]*>||s; s|</textarea.*||s;' \
	-e 'decode_entities($$_);' \
	-e 's|.*?\n= |= |s;' \
	-e 's|<!--.*-->||s;' \
	-e '$(re_blockquote);' \
	-e '$(re_urlencode);' \
	< $< > $@

$(stem).native: $(stem).mediawiki $(filters)
	pandoc -f mediawiki $(args_filter) -o $@ $<

$(flavors:%=$(stem)-%.pdf) $(stem).tex: $(stem).native $(templates)
	pandoc $(args_meta) $(args_latex) $(args_$(@:$(stem)-%.pdf=%)) -o $@ $<