# Core: Compatibility with other build tools.
#
# Note: autopatch functionality is covered separately.

CORE_COMPAT_CASES = auto-rebar rebar rebar-deps rebar-deps-pkg rebar-erlc-opts
CORE_COMPAT_TARGETS = $(addprefix core-compat-,$(CORE_COMPAT_CASES))
CORE_COMPAT_CLEAN_TARGETS = $(addprefix clean-,$(CORE_COMPAT_TARGETS))

REBAR_BINARY = https://github.com/rebar/rebar/releases/download/2.6.0/rebar

.PHONY: core-compat $(CORE_COMPAT_TARGETS) clean-core-compat $(CORE_COMPAT_CLEAN_TARGETS)

clean-core-compat: $(CORE_COMPAT_CLEAN_TARGETS)

$(CORE_COMPAT_CLEAN_TARGETS):
	$t rm -rf $(APP_TO_CLEAN)/

core-compat: $(CORE_COMPAT_TARGETS)

core-compat-auto-rebar: build clean-core-compat-auto-rebar

	$i "Bootstrap a new OTP library named $(APP)"
	$t mkdir $(APP)/
	$t cp ../erlang.mk $(APP)/
	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v

	$i "Add rebar.config as a dependency of 'app' target"
	$t echo "app:: rebar.config" >> $(APP)/Makefile

	$i "Build the application"
	$t $(MAKE) -C $(APP) $v

	$i "Check that rebar.config was created"
	$t test -f $(APP)/rebar.config

	$i "Check that rebar.config can be loaded"
	$t $(ERL) -eval "{ok, _} = file:consult(\"$(APP)/rebar.config\"), halt()"

	$i "Create a temporary file"
	$t touch $(APP)/older_file

	$i "Wait a second"
	$t sleep 1

	$i "Build the application again"
	$t $(MAKE) -C $(APP) $v

	$i "Check that rebar.config is newer than the temporary file"
	$t test $(APP)/rebar.config -nt $(APP)/older_file

	$i "Check that rebar.config can be loaded"
	$t $(ERL) -eval "{ok, _} = file:consult(\"$(APP)/rebar.config\"), halt()"

	$i "Distclean the application"
	$t $(MAKE) -C $(APP) distclean $v

	$i "Download rebar"
	$t curl -s -L -o $(APP)/rebar $(REBAR_BINARY)
	$t chmod +x $(APP)/rebar

	$i "Use rebar to build the application"
	$t cd $(APP) && ./rebar compile $v

core-compat-rebar: build clean-core-compat-rebar

	$i "Bootstrap a new OTP library named $(APP)"
	$t mkdir $(APP)/
	$t cp ../erlang.mk $(APP)/
	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v

	$i "Run 'make rebar.config'"
	$t $(MAKE) -C $(APP) rebar.config $v

	$i "Check that rebar.config was created"
	$t test -f $(APP)/rebar.config

	$i "Check that rebar.config can be loaded"
	$t $(ERL) -eval "{ok, _} = file:consult(\"$(APP)/rebar.config\"), halt()"

	$i "Create a temporary file"
	$t touch $(APP)/older_file

	$i "Wait a second"
	$t sleep 1

	$i "Run 'make rebar.config' again"
	$t $(MAKE) -C $(APP) rebar.config $v

	$i "Check that rebar.config is newer than the temporary file"
	$t test $(APP)/rebar.config -nt $(APP)/older_file

	$i "Check that rebar.config can be loaded"
	$t $(ERL) -eval "{ok, _} = file:consult(\"$(APP)/rebar.config\"), halt()"

	$i "Distclean the application"
	$t $(MAKE) -C $(APP) distclean $v

	$i "Download rebar"
	$t curl -s -L -o $(APP)/rebar $(REBAR_BINARY)
	$t chmod +x $(APP)/rebar

	$i "Use rebar to build the application"
	$t cd $(APP) && ./rebar compile $v

core-compat-rebar-deps: build clean-core-compat-rebar-deps

	$i "Bootstrap a new OTP library named $(APP)"
	$t mkdir $(APP)/
	$t cp ../erlang.mk $(APP)/
	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v

	$i "Add Cowboy as a dependency"
	$t sed -i.bak '2i\
DEPS = cowboy\
dep_cowboy = git https://github.com/ninenines/cowboy 1.0.0\
' $(APP)/Makefile

	$i "Run 'make rebar.config'"
	$t $(MAKE) -C $(APP) rebar.config $v

	$i "Check that rebar.config was created"
	$t test -f $(APP)/rebar.config

	$i "Check that Cowboy is listed in rebar.config"
	$t $(ERL) -eval " \
		{ok, C} = file:consult(\"$(APP)/rebar.config\"), \
		{_, [{cowboy, _, {git, _, \"1.0.0\"}}]} = lists:keyfind(deps, 1, C), \
		halt()"

	$i "Distclean the application"
	$t $(MAKE) -C $(APP) distclean $v

	$i "Download rebar"
	$t curl -s -L -o $(APP)/rebar $(REBAR_BINARY)
	$t chmod +x $(APP)/rebar

	$i "Use rebar to build the application"
	$t cd $(APP) && ./rebar get-deps compile $v

core-compat-rebar-deps-pkg: build clean-core-compat-rebar-deps-pkg

	$i "Bootstrap a new OTP library named $(APP)"
	$t mkdir $(APP)/
	$t cp ../erlang.mk $(APP)/
	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v

	$i "Add Cowboy package as a dependency"
	$t sed -i.bak '2i\
DEPS = cowboy\
' $(APP)/Makefile

	$i "Run 'make rebar.config'"
	$t $(MAKE) -C $(APP) rebar.config $v

	$i "Check that rebar.config was created"
	$t test -f $(APP)/rebar.config

	$i "Check that Cowboy is listed in rebar.config"
	$t $(ERL) -eval " \
		{ok, C} = file:consult(\"$(APP)/rebar.config\"), \
		{_, [{cowboy, _, {git, \"https://github.com/\" ++ _, _}}]} = lists:keyfind(deps, 1, C), \
		halt()"

	$i "Distclean the application"
	$t $(MAKE) -C $(APP) distclean $v

	$i "Download rebar"
	$t curl -s -L -o $(APP)/rebar $(REBAR_BINARY)
	$t chmod +x $(APP)/rebar

	$i "Use rebar to build the application"
	$t cd $(APP) && ./rebar get-deps compile $v

core-compat-rebar-erlc-opts: build clean-core-compat-rebar-erlc-opts

	$i "Bootstrap a new OTP library named $(APP)"
	$t mkdir $(APP)/
	$t cp ../erlang.mk $(APP)/
	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v

	$i "Add extra options to ERLC_OPTS"
	$t echo "ERLC_OPTS += +warn_export_all +warn_missing_spec +warn_untyped_record" >> $(APP)/Makefile

	$i "Run 'make rebar.config'"
	$t $(MAKE) -C $(APP) rebar.config $v

	$i "Check that rebar.config was created"
	$t test -f $(APP)/rebar.config

	$i "Check that -Werror is not listed in rebar.config"
	$t $(ERL) -eval " \
		{ok, C} = file:consult(\"$(APP)/rebar.config\"), \
		{_, Opts} = lists:keyfind(erl_opts, 1, C), \
		false = lists:member(warning_as_errors, Opts), \
		halt()"

	$i "Check that debug_info is listed in rebar.config"
	$t $(ERL) -eval " \
		{ok, C} = file:consult(\"$(APP)/rebar.config\"), \
		{_, Opts} = lists:keyfind(erl_opts, 1, C), \
		true = lists:member(debug_info, Opts), \
		halt()"

	$i "Check that extra options are listed in rebar.config"
	$t $(ERL) -eval " \
		{ok, C} = file:consult(\"$(APP)/rebar.config\"), \
		{_, Opts} = lists:keyfind(erl_opts, 1, C), \
		true = lists:member(warn_export_all, Opts), \
		true = lists:member(warn_missing_spec, Opts), \
		true = lists:member(warn_untyped_record, Opts), \
		halt()"

	$i "Distclean the application"
	$t $(MAKE) -C $(APP) distclean $v

	$i "Download rebar"
	$t curl -s -L -o $(APP)/rebar $(REBAR_BINARY)
	$t chmod +x $(APP)/rebar

	$i "Use rebar to build the application"
	$t cd $(APP) && ./rebar compile $v