check_PROGRAMS = pngdiff contours
dist_check_SCRIPTS = hint.sh ppt2png.sh

AM_CPPFLAGS = -I$(top_srcdir)/src/libcgencommon -I$(top_builddir)/src/libcgencommon
AM_CPPFLAGS += -include arm_vector.h
AM_CXXFLAGS += $(CAIRO_CFLAGS)
AM_DEFAULT_SOURCE_EXT = .cpp

pngdiff_LDADD = $(CAIRO_LIBS)

contours_SOURCES = contour_test_experiment.cpp contour_unit_test.cpp contour_test.cpp contours.cpp contour_test.h
contours_LDADD = ../src/libcgencommon/libcgencommon.a -lpthread $(CAIRO_LIBS) $(LIBPNG_LIBS) $(ZIP_LIBS) $(TINYXML_LIBS)
if HAS_FONTCONFIG
contours_LDADD += -lfontconfig
endif HAS_FONTCONFIG

EXTRA_PROGRAMS = perftest
perftest_SOURCES = contour_test_perf.cpp
perftest_LDADD = ../src/libcgencommon/libcgencommon.a -lpthread -lbenchmark $(CAIRO_LIBS) $(LIBPNG_LIBS) $(ZIP_LIBS)
perftest_CXXFLAGS = $(AM_CXXFLAGS) -O3

# Test control variables with defaults to allow putting them either in the environment or specify as an argument to `make`
MSC_TEST_ALLOWFAIL ?=        # show failing test stats but continue
MSC_TEST_COLLECT_CHANGED ?=  # collect all evidence of failing tests to changed/
MSC_TEST_DUMP_DIFF ?= 0      # dump this many PNG diffs and _new artifacts as text
MSC_TEST_NOFONT ?=           # compare to NOFONT variants in pngdiff

MSCGEN = $(top_builddir)/src/unix-msc-gen/msc-gen
MSCGEN_OPTS = -T png -s=4 --nocopyright -Pno --nopaths -F 'Nimbus Sans'
CONTOURS_OPTS = -F'DejaVu Sans'
MSC_SUBDIRS = doc basic notes procedures blocks
MSC_SUFFICES = signalling block graph

TIMEOUT_CMD = $(TIMEOUT_CMD_$(MSC_TEST_ALLOWFAIL))
TIMEOUT_CMD_1 = timeout -k 3 --preserve-status -v 30m

canon = $(dir $(1))canonical/$(notdir $(1))
rmcanon = $(subst canonical/,,$(1))
addsrc = $(addprefix $(srcdir)/,$(1))
rmsrc = $(patsubst $(srcdir)/%,%,$(1))

## singlepage(DIR,SUFFIX)
##  dir/ is required in the first target to be able to change first prereq's dir part
define singlepage
$(1)/%.png: $(call addsrc,$(1)/%.$(2)) $$(MSCGEN)
	$$(AM_V_at)$$(MKDIR_P) $(1)
	$$(AM_V_GEN)$$(TIMEOUT_CMD) $$(MSCGEN) $$(MSCGEN_OPTS) -o $$@ $$< 2>$$(basename $$@).err || touch $$@ $$(basename $$@).err
	$$(AM_V_at)[ "$$(MSC_TEST_NOFONT)" != 1 ] || MSCGEN_NOFONT=1 $$(TIMEOUT_CMD) $$(MSCGEN) $$(MSCGEN_OPTS) -o $$@_nofont $$< 2>/dev/null || true
%.exit: %.png pngdiff
	$$(AM_V_at){ orig=$$(call addsrc,$$(call canon,$$*)); e=$$*.err_new; d=$$*.err_diff; \
	  { [[ -f $$$$orig.err ]] && cat $$$$orig.err || echo Success.; } | \
	  { $(WORD_DIFF) <(sort) <(sort $$*.err) >$$$$d \
	    && { rm $$$$d; ./pngdiff $$< $$$$orig.png `[ ! -f $$<_nofont ] || echo $$<_nofont` && echo 0 || { echo $$$$?; mv $$< $$(patsubst %.png,%_new.png,$$<); } } \
	    || { echo 4; mv $$*.err $$$$e; \
	         [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$d >$$$$d.html && $(AHA) -b -w <$$$$e >$$$$e.html || true; } \
	  } >$$@; }
endef

## multipage(PNG,MSC)
##  almost the copy of singlepage, with some target file name changes
define multipage
$(1): $(call addsrc,$(2)) $$(MSCGEN)
	$$(AM_V_at)$$(MKDIR_P) $(dir $(1))
	$$(AM_V_GEN)$$(TIMEOUT_CMD) $$(MSCGEN) $$(MSCGEN_OPTS) -o $$(basename $(2)).png $$< 2>$$(basename $(2)).err || touch $$(basename $(2)).png $$(basename $(2)).err
	$$(AM_V_at)[ "$$(MSC_TEST_NOFONT)" != 1 ] || MSCGEN_NOFONT=1 $$(TIMEOUT_CMD) $$(MSCGEN) $$(MSCGEN_OPTS) -o $$(basename $(2)).png_nofont $$< 2>/dev/null || true
$(basename $(1)).exit: $(1) pngdiff
	$$(AM_V_at){ err=$(call addsrc,$(call canon,$(basename $(2)))).err; e=$(basename $(2)).err; d=$$(basename $$@).err_diff; \
	  { [[ -f $$$$err ]] && cat $$$$err || echo Success.; } | \
	  { $(WORD_DIFF) <(sort) <(sort $$$$e) >$$$$d \
	    && { rm $$$$d; ./pngdiff $$< $$(call addsrc,$$(call canon,$$<)) `[ ! -f $$<_nofont ] || echo $$<_nofont` && echo 0 || { echo $$$$?; mv $$< $$(patsubst %.png,%_new.png,$$<); } } \
	    || { echo 4; cp $$$$e $$$${e}_new; \
	         [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$d >$$$$d.html && $(AHA) -b -w <$$$${e}_new >$$$${e}_new.html || true; } \
	  } >$$@; }
endef
## would have been tempting to put a `PNGS += $(1)` into the rule but automake removes '+=' lines when producing Makefile.in

## diffonly(PNG)
##  almost-copy of the pngdiff part
define diffonly
$(1): unit_tests
$(basename $(1)).exit: $(1) pngdiff
	$$(AM_V_at){ ./pngdiff $$< $$(call addsrc,$$(call canon,$$<)) && echo 0 || { echo $$$$?; mv $$< $$(patsubst %.png,%_new.png,$$<); } } >$$@
endef

$(foreach d,$(MSC_SUBDIRS),$(foreach s,$(MSC_SUFFICES),$(eval $(call singlepage,$(d),$(s)))))

MSCS = $(foreach d,$(MSC_SUBDIRS),$(wildcard $(foreach s,$(MSC_SUFFICES),$(srcdir)/$(d)/*.$(s))))
EXTRA_DIST = $(MSCS) $(shell find $(srcdir) -type d -name canonical)
PNGS =
# Handle 2-page examples separately
if MSC_CHECK_FONTS
PNGS += $(filter-out doc/ex28.png \
                    basic/basic.png basic/ex28_color.png basic/ex28_color3.png basic/pagebreak.png basic/Problem.png \
                    procedures/pagebreak_proc.png procedures/Problem_proc.png procedures/basic_graph_proc.png \
                    ,$(addsuffix .png,$(call rmsrc,$(basename $(MSCS)))))
# Exceptions from doc/
$(eval $(call multipage,doc/ex2801.png,doc/ex28.signalling))
$(eval $(call multipage,doc/ex2802.png,doc/ex28.signalling))
PNGS += doc/ex2801.png doc/ex2802.png
# ... basic/
$(eval $(call multipage,basic/basic01.png,basic/basic.graph))
$(eval $(call multipage,basic/basic02.png,basic/basic.graph))
$(eval $(call multipage,basic/Problem01.png,basic/Problem.signalling))
$(eval $(call multipage,basic/Problem02.png,basic/Problem.signalling))
$(eval $(call multipage,basic/pagebreak01.png,basic/pagebreak.signalling))
$(eval $(call multipage,basic/pagebreak02.png,basic/pagebreak.signalling))
$(eval $(call multipage,basic/ex28_color01.png,basic/ex28_color.signalling))
$(eval $(call multipage,basic/ex28_color02.png,basic/ex28_color.signalling))
$(eval $(call multipage,basic/ex28_color301.png,basic/ex28_color3.signalling))
$(eval $(call multipage,basic/ex28_color302.png,basic/ex28_color3.signalling))
PNGS += basic/basic01.png basic/basic02.png basic/Problem01.png basic/Problem02.png basic/pagebreak01.png basic/pagebreak02.png \
        basic/ex28_color01.png basic/ex28_color02.png basic/ex28_color301.png basic/ex28_color302.png
# ... and procedures/
$(eval $(call multipage,procedures/pagebreak_proc01.png,procedures/pagebreak_proc.signalling))
$(eval $(call multipage,procedures/pagebreak_proc02.png,procedures/pagebreak_proc.signalling))
$(eval $(call multipage,procedures/Problem_proc01.png,procedures/Problem_proc.signalling))
$(eval $(call multipage,procedures/Problem_proc02.png,procedures/Problem_proc.signalling))
$(eval $(call multipage,procedures/basic_graph_proc01.png,procedures/basic_graph_proc.graph))
$(eval $(call multipage,procedures/basic_graph_proc02.png,procedures/basic_graph_proc.graph))
PNGS += procedures/pagebreak_proc01.png procedures/pagebreak_proc02.png \
        procedures/Problem_proc01.png procedures/Problem_proc02.png \
        procedures/basic_graph_proc01.png procedures/basic_graph_proc02.png

# Unit tests
UNIT_PNGS = $(addprefix contour/,$(notdir $(wildcard $(srcdir)/contour/canonical/*.png)))
$(foreach f,$(UNIT_PNGS),$(eval $(call diffonly,$(f))))
PNGS += $(UNIT_PNGS)
endif

# Hinting
HINTS_ORIG = $(shell find $(srcdir) -name '*.hints' | grep '/canonical/')
HINTS = $(call rmsrc,$(call rmcanon,$(HINTS_ORIG)))
define hinting
$(1): $(call addsrc,$(basename $(1))) $$(MSCGEN)
	$$(AM_V_at)$$(MKDIR_P) $(dir $(1))
	$$(AM_V_GEN)[ x$(SKIP_HINT_CHECKS) = x1 ] && touch $$@ || MSCGEN=$$(MSCGEN) $$(TIMEOUT_CMD) $$(srcdir)/hint.sh $$< >$$@ 2>$$@.err
$(1).exit: $(1)
	$$(AM_V_at)[ x$(SKIP_HINT_CHECKS) = x1 ] && echo 6 >$$@ || { d=$$<_diff; e=$$<.err; \
	  { echo Success. | cmp -s $$$$e - && \
	      { $(WORD_DIFF) $$(call addsrc,$$(call canon,$$<)) $$< >$$$$d && rm $$$$d && echo 0 || echo 5; } || \
	      { echo 4; [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$e >$$$${e}_new.html || mv $$$$e $$$${e}_new; } } >$$@; \
	  [[ -s $$$$d ]] && mv $$< $$<_new && \
	    [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$d >$$$$d.html && $(AHA) -b -w <$$<_new >$$<_new.html || true; }
endef
$(foreach f,$(HINTS),$(eval $(call hinting,$(f))))
EXTRA_DIST += $(basename $(call addsrc,$(HINTS)))

# TEI-mode, copies `hinting' machinery except the skip-test
TEI_ORIG = $(shell find $(srcdir) -name '*.tei' | grep '/canonical/' | grep -v International1_utf16.tei)
TEI = $(call rmsrc,$(call rmcanon,$(TEI_ORIG)))
define tei
$(1)/%.tei: $(call addsrc,$(1)/%.$(2)) $$(MSCGEN)
	$$(AM_V_at)$$(MKDIR_P) $(1)
	$$(AM_V_GEN){ [[ $$< =~ tei-mode/ ]] || echo CE; cat $$<; } | $$(TIMEOUT_CMD) $$(MSCGEN) --tei-mode --nopaths -S $(2) >$$@ 2>$$@.err || touch $$@ $$@.err
$(1)/%.tei.exit: $(1)/%.tei
	$$(AM_V_at){ d=$$<_diff; e=$$<.err; \
	  { echo Success. | cmp -s $$$$e - && \
	      { $(WORD_DIFF) $$(call addsrc,$$(call canon,$$<)) $$< >$$$$d && rm $$$$d && echo 0 || echo 5; } || \
	      { echo 4; [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$e >$$$${e}_new.html || mv $$$$e $$$${e}_new; } } >$$@; \
	  [[ -s $$$$d ]] && mv $$< $$<_new && \
	    [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$d >$$$$d.html && $(AHA) -b -w <$$<_new >$$<_new.html || true; }
endef
uniq = $(if $1,$(firstword $1) $(call uniq,$(filter-out $(firstword $1),$1)))
$(foreach d,$(call uniq,$(patsubst %/,%,$(dir $(TEI)))),$(foreach s,$(MSC_SUFFICES),$(eval $(call tei,$(d),$(s)))))
EXTRA_DIST += $(wildcard $(foreach f,$(basename $(call addsrc,$(TEI))),$(foreach s,$(MSC_SUFFICES),$(f).$(s))))

PPTX_ORIG = $(shell find $(srcdir) -name '*.pptx' | grep '/canonical/')
PPTX = $(call rmsrc,$(call rmcanon,$(PPTX_ORIG)))
define ppt
$(1)/%.pptx: $(call addsrc,$(1)/%.$(2)) $$(MSCGEN)
	$$(AM_V_at)$$(MKDIR_P) $(1)
	$$(AM_V_GEN)$$(TIMEOUT_CMD) $$(MSCGEN) -s=1 -s=auto $$(MSCGEN_OPTS) -Tppt -S $(2) -o $$@ $$< 2>$$@.err || touch $$@ $$@.err
	$$(AM_V_at)[ "$$(MSC_TEST_NOFONT)" != 1 ] || MSCGEN_NOFONT=1 $$(TIMEOUT_CMD) $$(MSCGEN) -s=1 -s=auto $$(MSCGEN_OPTS) -Tppt -S $(2) -o $$@_nofont $$< 2>/dev/null || true
$(1)/%.pptx.exit: $(1)/%.pptx
	$$(AM_V_at)e=$$<.err; err4=; oe=$$(call addsrc,$$(call canon,$$(<:.pptx=.err))); \
	  { { [ -f $$$$oe ] && cat $$$$oe || echo Success.; } | cmp -s $$$$e - && \
	    { ox=$$(call addsrc,$$(call canon,$$<)); op=$$(basename $$<)_pptx.png; np=$$(basename $$<)_pptx_new.png; \
	      cmp -s $$$$ox $$< && echo 0 || \
	        { cp $$< $$(<:.pptx=_new.pptx); \
	          { export LOFFICE=$(LOFFICE); $$(TIMEOUT_CMD) $$(srcdir)/ppt2png.sh $$$$ox $$$$op; $$(TIMEOUT_CMD) $$(srcdir)/ppt2png.sh $$< $$$$np; } 2>$$$$e; \
	          [ ! -f $$<_nofont ] || { export LOFFICE=$(LOFFICE); $$(TIMEOUT_CMD) $$(srcdir)/ppt2png.sh $$<_nofont $$$${np}_nofont; } 2>/dev/null; \
	          [ -s $$$$e ] && err4=1 || \
	            { [ -s $$$$op -a -s $$$$np ] \
	                && { ./pngdiff $$$$op $$$$np `[ ! -f $$$${np}_nofont ] || echo $$$${np}_nofont` && { rm -f $$(<:.pptx=_new.pptx) $$$$np $$$${np}_nofont; echo 0; } || echo $$$$?; } \
	                || echo 1; } \
	        } \
	    } || err4=1; \
	    [ x$$$$err4 = x ] || { echo 4; [[ $(AHA) != : ]] && $(AHA) -b -w <$$$$e >$$$${e}_new.html || mv $$$$e $$$${e}_new; } } >$$@
endef
$(foreach d,$(call uniq,$(patsubst %/,%,$(dir $(PPTX)))),$(foreach s,$(MSC_SUFFICES),$(eval $(call ppt,$(d),$(s)))))

check-local: $(PNGS:.png=.exit) $(HINTS:=.exit) $(TEI:=.exit) $(PPTX:=.exit)
	$(AM_V_at)[ "$(MSC_TEST_COLLECT_CHANGED)" != 1 ] || { \
	  rm -rf changed 2>/dev/null; \
	  $(MKDIR_P) changed; \
	  [[ ! -s unit_tests ]] || cp unit_tests changed/contour_err.txt; \
	  find $(builddir) -name '*_diff*' | xargs -r cp --parent -t changed; \
	  for new in `find $(builddir) -name '*_new*'`; do \
	    f=$${new#$(builddir)/}; \
	    d=$${f%/*}; \
	    $(MKDIR_P) changed/$$d; \
	    g=$${f/_new}; \
	    cp $$new changed/$$g; \
	    o=$(srcdir)/$$d/canonical/$${g##*/}; \
	    [[ -f $$o ]] || o=$(builddir)/$$d/$${g##*/}; \
	    [[ ! -f $$o ]] || cp $$o changed/$${f/_new/_old}; \
	  done; \
	}
	$(AM_V_at)[ $(MSC_TEST_DUMP_DIFF) -lt 1 ] || find $(builddir) -name '*_diff.png' -o -name '*_new*' | shuf -n$(MSC_TEST_DUMP_DIFF) | xargs -r -I% sh -c 'echo BEGIN %; base64 %; echo END'
	$(AM_V_at)echo $^ | xargs grep -Hv 0 |\
	  sed -e 's,^./,,' -e 's/.tei.exit:/.tei:/' -e 's/.hints.exit:/.hints:/' -e 's/.exit:/.png:/' | awk '{split($$0,a,"[/]");print length(a),$$0}' | sort -k 1n,2 | cut -f2 -d' ' |\
	  sed -re 's/^(.*):1/DIFF:     \1/' -e 's/^(.*):2/DIFFSIZE: \1/' -e 's/^(.*):3/MISSING:  \1/' -e 's/^(.*):4/ERR_MSG:  \1/' -e 's/^(.*):5/TEI:      \1/' -e 's/^(.*):6/SKIP:     \1/'
	$(AM_V_at)[ ! -s unit_tests ] || tail -n +2 unit_tests | sed 's/^/UNIT:     /'
	$(AM_V_at)echo $^ | xargs cat | sort -n <(tail -n +2 unit_tests | sed 's/.*/9/') - | uniq -c |\
	  awk 'BEGIN{print "Summary:"} \
	       $$2 == "0" {print "no difference:",$$1;next} \
	       $$2 == "6" {print "skipped:",$$1;next} \
	       {e = 1} \
	       $$2 == "1" {print "different pixels:",$$1} \
	       $$2 == "2" {print "different size:",$$1} \
	       $$2 == "3" {print "file reading error:",$$1} \
	       $$2 == "4" {print "compile error:",$$1} \
	       $$2 == "5" {print "TEI error:",$$1} \
	       $$2 == "9" {print "unit tests failed:",$$1} \
	       END{exit e}' \
	  && [ ! -s unit_tests ] \
	  || [ "$(MSC_TEST_ALLOWFAIL)" = 1 ]

clean-local:
	$(AM_V_at)find -name '*.exit' -o -name '*.err' -o -name '*.png' -o -name '*.tei' -o -name '*.hints' -o -name '*.pptx' | xargs -r rm

unit_tests: contours
	$(AM_V_at)$(MKDIR_P) contour
	$(AM_V_GEN){ j=$$(echo "$(MAKEFLAGS)" | awk '{for(i=1;i<=NF;++i)if($$i~/^-j[0-9]+$$/)print "-j" int((substr($$i,3)+1)/2)}'); \
	  export MSCGEN_NOFONT=$(shell [ "$(MSC_TEST_NOFONT)" = 1 ] && echo 1 || echo $${MSCGEN_NOFONT-1}); \
	  $(AM_V_P) && (cd contour && $(TIMEOUT_CMD) ../contours $(CONTOURS_OPTS) $$j) 2>$@ || (cd contour && $(TIMEOUT_CMD) ../contours $(CONTOURS_OPTS) $$j)>/dev/null 2>$@; } 


new_canon: $(PNGS) $(HINTS) $(TEI) $(PPTX)
	$(AM_V_GEN)echo $^ | tr ' ' '\n' | xargs $$(echo "$(MAKEFLAGS)" | sed -E 's/^.*-j([0-9]+).*$$/-P\1/;t;d') -I@ sh -c 'cp @ $(top_srcdir)/tests/`dirname @`/canonical'

CLEANFILES = unit_tests contour/unit_tests