BUILD_DIR=build
TMP_DIR=.tmp
SRC_DIR=src
CALENDAR_DIR=calendars

CALENDAR_YEARS=$(wildcard ${CALENDAR_DIR}/*)
CALENDARS=$(patsubst %,${BUILD_DIR}/calendar-%.pdf,$(notdir ${CALENDAR_YEARS}))

.PHONY: directories calendars all
.DEFAULT_GOAL := all

directories: ${BUILD_DIR}  ${TMP_DIR}

${BUILD_DIR}:
	mkdir -p ${BUILD_DIR}

${TMP_DIR}:
	mkdir -p ${TMP_DIR}

${BUILD_DIR}/calendar-%.pdf: directories ${CALENDAR_DIR}/%/images/* ${SRC_DIR}/*.tex ${SRC_DIR}/*.sty
	cd ${SRC_DIR} && lualatex --jobname="calendar-$*" --output-directory="../${TMP_DIR}" "\def\calyear{$*} \def\caltitle{"$(file < ${CALENDAR_DIR}/$*/title)"} \input{calendar.tex}"
	cp "${TMP_DIR}/calendar-$*.pdf" "${BUILD_DIR}/calendar-$*.pdf"

calendars: directories ${CALENDARS}
all: calendars

clean:
	rm -rf ${BUILD_DIR}
	rm -rf ${TMP_DIR}

%: ${BUILD_DIR}/calendar-%.pdf ;