COMPILER := pdflatex

TEXINPUTS := ./styles/:$(TEXINPUTS)
COMPILER  := TEXINPUTS=$(TEXINPUTS) $(COMPILER)

ifndef VERBOSE
    PIPE     := 1>/dev/null 2>/dev/null
    INDENT   := 2>&1 | sed 's/^/    /'
    COMPILER := $(COMPILER) -interaction=nonstopmode
endif

check_error = \
    if [ ! $(1) -eq 0 ]; then \
        cat '../out/$(2).log' | \
            perl -0777 -ne 'print m/\n! .*?\nl\.\d.*?\n.*?(?=\n)/gs' $(INDENT); \
        exit 1; \
    fi

createout = mkdir -p out && mkdir -p out/chapters

compile = cd src && ${COMPILER} -shell-escape -file-line-error -synctex=1 \
            -output-format=pdf -output-directory=../out .formats/${1}.tex ${PIPE} || \
            $(call check_error, $$?,$(1))

.PHONY: clean book
.PRECIOUS: %.pdf
.SECONDEXPANSION:

%.pdf: src/.formats/%.tex
	@echo "Building $*.pdf"
	@$(call createout)
	@echo "    Compiling $*.tex"
	@$(call compile,$*)


%.odt: src/%.tex
	@echo "Building $*.odt"
	@echo "    Compiling $*.tex"
	@cd src && pandoc -f latex -t odt -o ../out/book.odt book.tex

%.epub: src/%.tex
	@echo "Building $*.epub"
	@echo "    Compiling $*.tex"
	@cd src && pandoc -f latex -o ../out/book.epub book.tex

%.clean:
	@echo "cleaning"
	@rm -rfd out/*.4ct out/*.4tc out/*.dvi out/*.idv out/*.tex out/*.tmp out/*.xref out/*.svg out/*.lg out/*.4og out/*.aux out/*.bbl out/*.blg out/*.log out/*.out out/*.synctex.gz out/**/*.png \
out/*.nav out/*.run.xml out/*.snm out/*.toc out/*.vrb out/*-blx.bib out/**/

clean:
	@rm -rf out

book: oneside.pdf twosides.pdf ebook.pdf $$@.odt $$@.epub $$@.clean