.PHONY: help \
        install-matlab install-octave install \
        uninstall-matlab uninstall-octave uninstall \
        test-matlab test-octave test

MATLAB?=matlab
OCTAVE?=octave

TESTDIR=$(CURDIR)/tests
ROOTDIR=$(CURDIR)/MOcov

ADDPATH=orig_dir=pwd();cd('$(ROOTDIR)');addpath(pwd);cd(orig_dir)
RMPATH=rmpath('$(ROOTDIR)');
SAVEPATH=savepath();exit(0)

INSTALL=$(ADDPATH);$(SAVEPATH)
UNINSTALL=$(RMPATH);$(SAVEPATH)

help:
	@echo "Usage: make <target>, where <target> is one of:"
	@echo "------------------------------------------------------------------"
	@echo "  install            to add MOcov to the Matlab and GNU Octave"
	@echo "                     search paths, using whichever is present"
	@echo "  uninstall          to remove MOcov from the Matlab and GNU"
	@echo "                     Octave search paths, using whichever is"
	@echo "                     present"
	@echo "  test               to run tests using the Matlab and GNU Octave"
	@echo "                     search paths, whichever is present"
	@echo ""
	@echo "  install-matlab     to add MOcov to the Matlab search path"
	@echo "  install-octave     to add MOcov to the GNU Octave search path"
	@echo "  uninstall-matlab   to remove MOcov from the Matlab search path"
	@echo "  uninstall-octave   to remove MOcov from the GNU Octave search"
	@echo "                     path"
	@echo "  test-matlab        to run tests using Matlab [1]"
	@echo "  test-octave        to run tests using GNU Octave [1]"
	@echo ""
	@echo "[1] requires MOxUnit: https://github.com/MOxUnit/MOxUnit
	@echo "------------------------------------------------------------------"
	@echo ""
	@echo "Environmental variables for storing test results:"
	@echo "  JUNIT_XML_FILE    		JUnit-like XML output with test result"
	@echo ""

RUNTESTS_ARGS='${TESTDIR}'
ifdef JUNIT_XML_FILE
	RUNTESTS_ARGS +=,'-junit_xml_file','$(JUNIT_XML_FILE)'
	export JUNIT_XML_FILE
endif
	

TEST=$(ADDPATH);if(isempty(which('moxunit_runtests'))),error('MOxUnit is required; see https://github.com/MOxUnit/MOxUnit');end;success=moxunit_runtests($(RUNTESTS_ARGS));exit(~success);

MATLAB_BIN=$(shell which $(MATLAB))
OCTAVE_BIN=$(shell which $(OCTAVE))

ifeq ($(MATLAB_BIN),)
	# for Apple OSX, try to locate Matlab elsewhere if not found
    MATLAB_BIN=$(shell ls /Applications/MATLAB_R20*/bin/${MATLAB} 2>/dev/null | tail -1)
endif
	
MATLAB_RUN=$(MATLAB_BIN) -nojvm -nodisplay -nosplash -r
OCTAVE_RUN=$(OCTAVE_BIN) --no-gui --quiet --eval

install-matlab:
	@if [ -n "$(MATLAB_BIN)" ]; then \
		$(MATLAB_RUN) "$(INSTALL)"; \
	else \
		echo "matlab binary could not be found, skipping"; \
	fi;

install-octave:
	@if [ -n "$(OCTAVE_BIN)" ]; then \
		$(OCTAVE_RUN) "$(INSTALL)"; \
	else \
		echo "octave binary could not be found, skipping"; \
	fi;

install:
	@if [ -z "$(MATLAB_BIN)$(OCTAVE_BIN)" ]; then \
		@echo "Neither matlab binary nor octave binary could be found" \
		exit 1; \
	fi;
	$(MAKE) install-matlab
	$(MAKE) install-octave
	

uninstall-matlab:
	@if [ -n "$(MATLAB_BIN)" ]; then \
		$(MATLAB_RUN) "$(UNINSTALL)"; \
	else \
		echo "matlab binary could not be found, skipping"; \
	fi;
	
uninstall-octave:
	@if [ -n "$(OCTAVE_BIN)" ]; then \
		$(OCTAVE_RUN) "$(UNINSTALL)"; \
	else \
		echo "octave binary could not be found, skipping"; \
	fi;
	
uninstall:
	@if [ -z "$(MATLAB_BIN)$(OCTAVE_BIN)" ]; then \
		@echo "Neither matlab binary nor octave binary could be found" \
		exit 1; \
	fi;
	$(MAKE) uninstall-matlab
	$(MAKE) uninstall-octave


test-matlab:
	@if [ -n "$(MATLAB_BIN)" ]; then \
		$(MATLAB_RUN) "$(TEST)"; \
	else \
		echo "matlab binary could not be found, skipping"; \
	fi;

test-octave:
	if [ -n "$(OCTAVE_BIN)" ]; then \
		$(OCTAVE_RUN) "$(TEST)"; \
	else \
		echo "octave binary could not be found, skipping"; \
	fi;

test:
	@if [ -z "$(MATLAB_BIN)$(OCTAVE_BIN)" ]; then \
		@echo "Neither matlab binary nor octave binary could be found" \
		exit 1; \
	fi;
	$(MAKE) test-matlab
	$(MAKE) test-octave