BINDIR = bin
TMPDIR = tmp
DOCDIR = doc
HOLIDAYS = $(basename $(notdir $(wildcard $(DOCDIR)/*.xls)))
CSV2XXX_CMD = csv2xxx
INSTALLABLE_ITINERARYS = romantischestrasse han-use-ber cz-sk-hu cz-sk-hu-at seven-countries elbe-reloaded bodensee elbe-unczeched
PATH := $(PATH):$(BINDIR)

#  There are a couple of commands in this makefile that are so long that they
#  make it difficult to see any warnings. Therefore I suppress make's displaying
#  of the command by use of '@' but get the recipe to echo a *shortened* version
#  of the command that ran. All good so far. However, sometimes I run 'make -s'
#  because I don't even want to see make displaying even *short* commands, but
#  then those commands that had shortened versions of the commands echoed *don't*
#  get suppressed. To fix this, the recipe itself checks whether '-s' is in
#  $(MAKEFLAGS) or not and echos or not accordingly. This is done a few times
#  in this makefile.

$(TMPDIR)/installed.timestamp: $(TMPDIR)/compiled.timestamp $(patsubst %, $(TMPDIR)/%.installed, $(INSTALLABLE_ITINERARYS))
	@touch $@

$(TMPDIR)/%.installed: $(TMPDIR)/%.csv $(TMPDIR)/%.html $(TMPDIR)/crosschecked.timestamp
	@B=$(patsubst $(TMPDIR)/%.installed,%,$@); \
	for YYYYWW_HOLIDAY in ../holidays/20????-$$B; do \
            [ "$(findstring s,$(MAKEFLAGS))" ] || echo "cp $(TMPDIR)/$$B.html $$YYYYWW_HOLIDAY/html/camps.html"; \
            cp $(TMPDIR)/$$B.html $$YYYYWW_HOLIDAY/html/camps.html; \
	    chmod 644 $$YYYYWW_HOLIDAY/html/camps.html; \
	    [ "$(findstring s,$(MAKEFLAGS))" ] || echo "$(CSV2XXX_CMD) --output-format=gpx $(TMPDIR)/$$B.csv > $$YYYYWW_HOLIDAY/waypoints/$$B-waypoints-camps.gpx"; \
	    $(CSV2XXX_CMD) --output-format=gpx $(TMPDIR)/$$B.csv > $$YYYYWW_HOLIDAY/waypoints/$$B-waypoints-camps.gpx; \
        done
	@touch $@

$(TMPDIR)/crosschecked.timestamp: $(TMPDIR)/compiled.timestamp
	@$(CSV2XXX_CMD) --output-format=csv $(addprefix $(TMPDIR)/,$(addsuffix .csv, $(HOLIDAYS))) > /dev/null
	@touch $@

$(TMPDIR)/compiled.timestamp: $(addprefix $(TMPDIR)/,$(addsuffix .html, $(HOLIDAYS))) $(addprefix $(TMPDIR)/,$(addsuffix .csv, $(HOLIDAYS)))
	touch $@

#  See https://wiki.openoffice.org/wiki/Documentation/DevGuide/Spreadsheets/Filter_Options,
#  especially the examples right at the end of the page. The important bits here are
#  '76' meaning UTF, 'true' meaning 'quote all text fields'
$(TMPDIR)/%.csv: $(DOCDIR)/%.xls
	@[ "$(findstring s,$(MAKEFLAGS))" ] || echo "libreoffice ... --convert-to csv ... $<"
	@libreoffice -env:UserInstallation=file:///home/$$USER/.libreoffice-alt --headless --convert-to "csv:Text - txt - csv (StarCalc):44,34,76,1,1/1,,true" --outdir $(TMPDIR) $< > /dev/null

$(TMPDIR)/%.html: $(TMPDIR)/%.csv
	$(CSV2XXX_CMD) --output-format=html $^ > $@

clean:
	rm -f $(TMPDIR)/*