# use GNU Make to run tests in parallel, and without depending on Rubygems
all:: test
ruby = ruby
-include local.mk
ruby_bin := $(shell which $(ruby))
ifeq ($(DLEXT),) # "so" for Linux
  DLEXT := $(shell $(ruby) -rrbconfig -e 'puts Config::CONFIG["DLEXT"]')
endif
ifeq ($(RUBY_VERSION),)
  RUBY_VERSION := $(shell $(ruby) -e 'puts RUBY_VERSION')
endif

# dunno how to implement this as concisely in Ruby, and hell, I love awk
awk_slow := awk '/def test_/{print FILENAME"--"$$2".n"}' 2>/dev/null

slow_tests := test/unit/test_server.rb test/exec/test_exec.rb
log_suffix = .$(RUBY_VERSION).log
T := $(filter-out $(slow_tests),$(wildcard test/*/test*.rb))
T_n := $(shell $(awk_slow) $(slow_tests))
T_log := $(subst .rb,$(log_suffix),$(T))
T_n_log := $(subst .n,$(log_suffix),$(T_n))
test_prefix = $(CURDIR)/test/install-$(RUBY_VERSION)

http11_deps := $(addprefix ext/unicorn/http11/, \
                 ext_help.h http11.c http11_parser.c http11_parser.h \
                 http11_parser.rl http11_parser_common.rl)
inst_deps := $(wildcard bin/*) $(wildcard lib/*.rb) \
  $(wildcard lib/*/*.rb) $(http11_deps)

ext/unicorn/http11/http11_parser.c: ext/unicorn/http11/http11_parser.rl
	cd $(@D) && ragel $(<F) -C -G2 -o $(@F)
ext/unicorn/http11/Makefile: ext/unicorn/http11/extconf.rb
	cd $(@D) && $(ruby) $(<F)
ext/unicorn/http11/http11.$(DLEXT): $(http11_deps) ext/unicorn/http11/Makefile
	$(MAKE) -C $(@D)
lib/unicorn/http11.$(DLEXT): ext/unicorn/http11/http11.$(DLEXT)
	@mkdir -p lib
	install -m644 $< $@
http11: lib/unicorn/http11.$(DLEXT)

$(test_prefix)/.stamp: $(inst_deps)
	$(MAKE) clean-http11
	$(MAKE) install-test
	> $@

install-test:
	mkdir -p $(test_prefix)/.ccache
	tar c bin ext lib GNUmakefile | (cd $(test_prefix) && tar x)
	$(MAKE) -C $(test_prefix) http11 shebang

# this is only intended to be run within $(test_prefix)
shebang: bin/unicorn
	$(ruby) -i -p -e '$$_.gsub!(%r{^#!.*$$},"#!$(ruby_bin)")' $<

t_log := $(T_log) $(T_n_log)
test: $(T) $(T_n)
	@cat $(t_log) | $(ruby) test/aggregate.rb
	@$(RM) $(t_log)

slow-tests: $(slow_tests)
$(slow_tests):
	@$(MAKE) $(shell $(awk_slow) $@)

TEST_OPTS = -v
run_test = @echo '*** $(arg) ***'; \
  setsid $(ruby) $(arg) $(TEST_OPTS) >$(t) 2>&1 || \
  (cat >&2 < $(t); exit 1)

%.n: arg = $(subst .n,,$(subst --, -n ,$@))
%.n: t = $(subst .n,$(log_suffix),$@)
%.n: export PATH := $(test_prefix)/bin:$(PATH)
%.n: export RUBYLIB := $(test_prefix)/lib:$(RUBYLIB)
%.n: $(test_prefix)/.stamp
	$(run_test)

$(T): arg = $@
$(T): t = $(subst .rb,$(log_suffix),$@)
$(T): export PATH := $(test_prefix)/bin:$(PATH)
$(T): export RUBYLIB := $(test_prefix)/lib:$(RUBYLIB)
$(T): $(test_prefix)/.stamp
	$(run_test)

install: bin/unicorn
	$(prep_setup_rb)
	git diff --quiet $<
	$(ruby) setup.rb all
	git checkout $<
	$(prep_setup_rb)

clean-http11:
	-$(MAKE) -C ext/unicorn/http11 clean
	$(RM) ext/unicorn/http11/Makefile lib/unicorn/http11.$(DLEXT)

setup_rb_files := .config InstalledFiles
prep_setup_rb := @-$(RM) $(setup_rb_files);$(MAKE) -C ext/unicorn/http11 clean

clean: clean-http11
	$(RM) $(setup_rb_files)
	$(RM) $(t_log)
	$(RM) -r $(test_prefix)

Manifest:
	git ls-files > $@+
	cmp $@+ $@ || mv $@+ $@
	$(RM) -f $@+

# using rdoc 2.4.1
doc: .document
	rdoc -Na -m README -t "$(shell sed -ne '1s/^= //p' README)"

.PHONY: doc $(T) $(slow_tests) Manifest