# See LICENSE for licensing information.

REBAR ?= $(shell command -v rebar >/dev/null 2>&1 && echo "rebar" || echo "$(CURDIR)/rebar")

ELVIS ?= $(shell command -v elvis >/dev/null 2>&1 && echo "elvis" || echo "$(CURDIR)/elvis")

DEPS_PLT := $(CURDIR)/.deps_plt

ERLANG_DIALYZER_APPS := erts \
						kernel \
						stdlib \
						inets

DIALYZER := dialyzer

# Travis CI is slow at building dialyzer PLT
TRAVIS ?=
ifeq (true,$(TRAVIS))
	OTP_VSN := $(shell erl -noshell -eval 'io:format("~p", [erlang:system_info(otp_release)]), erlang:halt(0).' | perl -lne 'print for /^(?:"R)?(\d+).*/g')
	NO_DIALYZER := $(shell expr $(OTP_VSN) \<= 16 )

	ifeq ($(NO_DIALYZER), 1)
		DIALYZER := : not running dialyzer on TRAVIS with R16 and below
	endif
endif

SRCS := $(wildcard src/* include/* rebar.config)

SRC_BEAMS := $(patsubst src/%.erl, ebin/%.beam, $(wildcard src/*.erl))

.PHONY: all
all: maybe_dev deps ebin/jesse.app bin/jesse

.PHONY: maybe_dev
maybe_dev:
ifdef CI
	$(MAKE) --no-print-directory .rebar/DEV_MODE
else
	@:
endif

# Clean

.PHONY: clean
clean:
	$(REBAR) clean
	$(RM) -r .rebar
	$(RM) -r bin
	$(RM) doc/*.html
	$(RM) doc/edoc-info
	$(RM) doc/erlang.png
	$(RM) doc/stylesheet.css
	$(RM) -r ebin
	$(RM) -r logs

.PHONY: distclean
distclean:
	$(RM) $(DEPS_PLT)
	$(RM) -r deps
	$(MAKE) clean

# Deps

.PHONY: get-deps
get-deps:
	$(REBAR) get-deps
	[ -f .rebar/DEV_MODE ] && git submodule update --init --recursive || true

.PHONY: update-deps
update-deps:
	$(REBAR) update-deps

.PHONY: delete-deps
delete-deps:
	$(REBAR) delete-deps

.PHONY: deps
deps: get-deps

# Docs

.PHONY: docs
docs:
	$(REBAR) doc skip_deps=true

# Compile

ebin/jesse.app: compile

bin/jesse: ebin/jesse.app $(SRC_BEAMS)
	$(REBAR) escriptize
	bin/jesse --help

.PHONY: compile
compile: $(SRCS)
	$(REBAR) compile

# Tests.

.PHONY: test
test: .rebar/DEV_MODE deps eunit ct xref dialyzer

.rebar/DEV_MODE:
	mkdir -p .rebar
	touch .rebar/DEV_MODE

.PHONY: eunit
eunit:
	$(REBAR) eunit skip_deps=true

.PHONY: ct
ct:
	$(REBAR) ct skip_deps=true suites="jesse_tests_draft3,jesse_tests_draft4,jesse_tests_generic"

.PHONY: xref
xref:
	$(REBAR) xref skip_deps=true

$(DEPS_PLT):
	$(DIALYZER) --build_plt --apps $(ERLANG_DIALYZER_APPS) -r deps --output_plt $(DEPS_PLT)

.PHONY: dialyzer
dialyzer: $(DEPS_PLT) ebin/jesse.app
	$(DIALYZER) -q --plt $(DEPS_PLT) -Wno_return ebin > test/dialyzer_warnings || true
	diff -U0 test/known_dialyzer_warnings test/dialyzer_warnings

.PHONY: elvis
elvis:
	$(ELVIS) rock > test/elvis || true
	grep "FAIL" test/elvis | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g" > test/elvis_warnings
	diff -U0 test/known_elvis_warnings test/elvis_warnings || cat test/elvis