# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

.PHONY: all deps app rel docs tests clean distclean help erlang-mk

ERLANG_MK_VERSION = 1

# Core configuration.

PROJECT ?= $(notdir $(CURDIR))
PROJECT := $(strip $(PROJECT))

# Verbosity.

V ?= 0

gen_verbose_0 = @echo " GEN   " $@;
gen_verbose = $(gen_verbose_$(V))

# Core targets.

all:: deps app rel

clean::
	$(gen_verbose) rm -f erl_crash.dump

distclean:: clean

help::
	@printf "%s\n" \
		"erlang.mk (version $(ERLANG_MK_VERSION)) is distributed under the terms of the ISC License." \
		"Copyright (c) 2013-2014 Loïc Hoguin <essen@ninenines.eu>" \
		"" \
		"Usage: [V=1] make [target]" \
		"" \
		"Core targets:" \
		"  all         Run deps, app and rel targets in that order" \
		"  deps        Fetch dependencies (if needed) and compile them" \
		"  app         Compile the project" \
		"  rel         Build a release for this project, if applicable" \
		"  docs        Build the documentation for this project" \
		"  tests       Run the tests for this project" \
		"  clean       Delete temporary and output files from most targets" \
		"  distclean   Delete all temporary and output files" \
		"  help        Display this help and exit" \
		"" \
		"The target clean only removes files that are commonly removed." \
		"Dependencies and releases are left untouched." \
		"" \
		"Setting V=1 when calling make enables verbose mode."

# Core functions.

ifeq ($(shell which wget 2>/dev/null | wc -l), 1)
define core_http_get
	wget --no-check-certificate -O $(1) $(2)|| rm $(1)
endef
else
define core_http_get
	erl -noshell -eval 'ssl:start(), inets:start(), case httpc:request(get, {"$(2)", []}, [{autoredirect, true}], []) of {ok, {{_, 200, _}, _, Body}} -> case file:write_file("$(1)", Body) of ok -> ok; {error, R1} -> halt(R1) end; {error, R2} -> halt(R2) end, halt(0).'
endef
endif

# Automated update.

ERLANG_MK_BUILD_CONFIG ?= build.config
ERLANG_MK_BUILD_DIR ?= .erlang.mk.build

erlang-mk:
	git clone https://github.com/ninenines/erlang.mk $(ERLANG_MK_BUILD_DIR)
	if [ -f $(ERLANG_MK_BUILD_CONFIG) ]; then cp $(ERLANG_MK_BUILD_CONFIG) $(ERLANG_MK_BUILD_DIR); fi
	cd $(ERLANG_MK_BUILD_DIR) && make
	cp $(ERLANG_MK_BUILD_DIR)/erlang.mk ./erlang.mk
	rm -rf $(ERLANG_MK_BUILD_DIR)

# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: distclean-deps distclean-pkg pkg-list pkg-search

# Configuration.

DEPS_DIR ?= $(CURDIR)/deps
export DEPS_DIR

REBAR_DEPS_DIR = $(DEPS_DIR)
export REBAR_DEPS_DIR

ALL_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(DEPS))

ifeq ($(filter $(DEPS_DIR),$(subst :, ,$(ERL_LIBS))),)
ifeq ($(ERL_LIBS),)
	ERL_LIBS = $(DEPS_DIR)
else
	ERL_LIBS := $(ERL_LIBS):$(DEPS_DIR)
endif
endif
export ERL_LIBS

PKG_FILE2 ?= $(CURDIR)/.erlang.mk.packages.v2
export PKG_FILE2

PKG_FILE_URL ?= https://raw.githubusercontent.com/ninenines/erlang.mk/master/packages.v2.tsv

# Core targets.

deps:: $(ALL_DEPS_DIRS)
	@for dep in $(ALL_DEPS_DIRS) ; do \
		if [ -f $$dep/GNUmakefile ] || [ -f $$dep/makefile ] || [ -f $$dep/Makefile ] ; then \
			$(MAKE) -C $$dep ; \
		else \
			echo "include $(CURDIR)/erlang.mk" | ERLC_OPTS=+debug_info $(MAKE) -f - -C $$dep ; \
		fi ; \
	done

distclean:: distclean-deps distclean-pkg

# Deps related targets.

define dep_fetch
	if [ "$$$$VS" = "git" ]; then \
		git clone -n -- $$$$REPO $(DEPS_DIR)/$(1); \
		cd $(DEPS_DIR)/$(1) && git checkout -q $$$$COMMIT; \
	elif [ "$$$$VS" = "hg" ]; then \
		hg clone -U $$$$REPO $(DEPS_DIR)/$(1); \
		cd $(DEPS_DIR)/$(1) && hg update -q $$$$COMMIT; \
	else \
		echo "Unknown or invalid dependency: $(1). Please consult the erlang.mk README for instructions." >&2; \
		exit 78; \
	fi
endef

define dep_target
$(DEPS_DIR)/$(1):
	@mkdir -p $(DEPS_DIR)
ifeq (,$(dep_$(1)))
	@if [ ! -f $(PKG_FILE2) ]; then $(call core_http_get,$(PKG_FILE2),$(PKG_FILE_URL)); fi
	@DEPPKG=$$$$(awk 'BEGIN { FS = "\t" }; $$$$1 == "$(1)" { print $$$$2 " " $$$$3 " " $$$$4 }' $(PKG_FILE2);); \
	VS=$$$$(echo $$$$DEPPKG | cut -d " " -f1); \
	REPO=$$$$(echo $$$$DEPPKG | cut -d " " -f2); \
	COMMIT=$$$$(echo $$$$DEPPKG | cut -d " " -f3); \
	$(call dep_fetch,$(1))
else
	@VS=$(word 1,$(dep_$(1))); \
	REPO=$(word 2,$(dep_$(1))); \
	COMMIT=$(word 3,$(dep_$(1))); \
	$(call dep_fetch,$(1))
endif
endef

$(foreach dep,$(DEPS),$(eval $(call dep_target,$(dep))))

distclean-deps:
	$(gen_verbose) rm -rf $(DEPS_DIR)

# Packages related targets.

$(PKG_FILE2):
	@$(call core_http_get,$(PKG_FILE2),$(PKG_FILE_URL))

pkg-list: $(PKG_FILE2)
	@cat $(PKG_FILE2) | awk 'BEGIN { FS = "\t" }; { print \
		"Name:\t\t" $$1 "\n" \
		"Repository:\t" $$3 "\n" \
		"Website:\t" $$5 "\n" \
		"Description:\t" $$6 "\n" }'

ifdef q
pkg-search: $(PKG_FILE2)
	@cat $(PKG_FILE2) | grep -i ${q} | awk 'BEGIN { FS = "\t" }; { print \
		"Name:\t\t" $$1 "\n" \
		"Repository:\t" $$3 "\n" \
		"Website:\t" $$5 "\n" \
		"Description:\t" $$6 "\n" }'
else
pkg-search:
	$(error Usage: make pkg-search q=STRING)
endif

ifeq ($(PKG_FILE2),$(CURDIR)/.erlang.mk.packages.v2)
distclean-pkg:
	$(gen_verbose) rm -f $(PKG_FILE2)
endif

help::
	@printf "%s\n" "" \
		"Package-related targets:" \
		"  pkg-list              List all known packages" \
		"  pkg-search q=STRING   Search for STRING in the package index"

# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: clean-app

# Configuration.

ERLC_OPTS ?= -Werror +debug_info +warn_export_all +warn_export_vars \
	+warn_shadow_vars +warn_obsolete_guard # +bin_opt_info +warn_missing_spec
COMPILE_FIRST ?=
COMPILE_FIRST_PATHS = $(addprefix src/,$(addsuffix .erl,$(COMPILE_FIRST)))

# Verbosity.

appsrc_verbose_0 = @echo " APP   " $(PROJECT).app.src;
appsrc_verbose = $(appsrc_verbose_$(V))

erlc_verbose_0 = @echo " ERLC  " $(filter %.erl %.core,$(?F));
erlc_verbose = $(erlc_verbose_$(V))

xyrl_verbose_0 = @echo " XYRL  " $(filter %.xrl %.yrl,$(?F));
xyrl_verbose = $(xyrl_verbose_$(V))

# Core targets.

app:: erlc-include ebin/$(PROJECT).app
	$(eval MODULES := $(shell find ebin -type f -name \*.beam \
		| sed "s/ebin\//'/;s/\.beam/',/" | sed '$$s/.$$//'))
	@if [ -z "$$(grep -E '^[^%]*{modules,' src/$(PROJECT).app.src)" ]; then \
		echo "Empty modules entry not found in $(PROJECT).app.src. Please consult the erlang.mk README for instructions." >&2; \
		exit 1; \
	fi
	$(eval GITDESCRIBE := $(shell git describe --dirty --abbrev=7 --tags --always --first-parent 2>/dev/null || true))
	$(appsrc_verbose) cat src/$(PROJECT).app.src \
		| sed "s/{modules,[[:space:]]*\[\]}/{modules, \[$(MODULES)\]}/" \
		| sed "s/{id,[[:space:]]*\"git\"}/{id, \"$(GITDESCRIBE)\"}/" \
		> ebin/$(PROJECT).app

define compile_erl
	$(erlc_verbose) erlc -v $(ERLC_OPTS) -o ebin/ \
		-pa ebin/ -I include/ $(COMPILE_FIRST_PATHS) $(1)
endef

define compile_xyrl
	$(xyrl_verbose) erlc -v -o ebin/ $(1)
	$(xyrl_verbose) erlc $(ERLC_OPTS) -o ebin/ ebin/*.erl
	@rm ebin/*.erl
endef

ifneq ($(wildcard src/),)
ebin/$(PROJECT).app::
	@mkdir -p ebin/

ebin/$(PROJECT).app:: $(shell find src -type f -name \*.erl) \
		$(shell find src -type f -name \*.core)
	$(if $(strip $?),$(call compile_erl,$?))

ebin/$(PROJECT).app:: $(shell find src -type f -name \*.xrl) \
		$(shell find src -type f -name \*.yrl)
	$(if $(strip $?),$(call compile_xyrl,$?))
endif

clean:: clean-app

# Extra targets.

erlc-include:
	-@if [ -d ebin/ ]; then \
		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; 2>/dev/null || printf ''; \
	fi

clean-app:
	$(gen_verbose) rm -rf ebin/

# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: build-ct-deps build-ct-suites tests-ct clean-ct distclean-ct

# Configuration.

CT_OPTS ?=
ifneq ($(wildcard test/),)
	CT_SUITES ?= $(sort $(subst _SUITE.erl,,$(shell find test -type f -name \*_SUITE.erl -exec basename {} \;)))
else
	CT_SUITES ?=
endif

TEST_ERLC_OPTS ?= +debug_info +warn_export_vars +warn_shadow_vars +warn_obsolete_guard
TEST_ERLC_OPTS += -DTEST=1 -DEXTRA=1 +'{parse_transform, eunit_autoexport}'

# Core targets.

tests:: tests-ct

clean:: clean-ct

distclean:: distclean-ct

help::
	@printf "%s\n" "" \
		"All your common_test suites have their associated targets." \
		"A suite named http_SUITE can be ran using the ct-http target."

# Plugin-specific targets.

ALL_TEST_DEPS_DIRS = $(addprefix $(DEPS_DIR)/,$(TEST_DEPS))

CT_RUN = ct_run \
	-no_auto_compile \
	-noshell \
	-pa $(realpath ebin) $(DEPS_DIR)/*/ebin \
	-dir test \
	-logdir logs

$(foreach dep,$(TEST_DEPS),$(eval $(call dep_target,$(dep))))

build-ct-deps: $(ALL_TEST_DEPS_DIRS)
	@for dep in $(ALL_TEST_DEPS_DIRS) ; do $(MAKE) -C $$dep; done

build-ct-suites: build-ct-deps
	$(gen_verbose) erlc -v $(TEST_ERLC_OPTS) -I include/ -o test/ \
		$(wildcard test/*.erl test/*/*.erl) -pa ebin/

tests-ct: ERLC_OPTS = $(TEST_ERLC_OPTS)
tests-ct: clean deps app build-ct-suites
	@if [ -d "test" ] ; \
	then \
		mkdir -p logs/ ; \
		$(CT_RUN) -suite $(addsuffix _SUITE,$(CT_SUITES)) $(CT_OPTS) ; \
	fi
	$(gen_verbose) rm -f test/*.beam

define ct_suite_target
ct-$(1): ERLC_OPTS = $(TEST_ERLC_OPTS)
ct-$(1): clean deps app build-ct-suites
	@if [ -d "test" ] ; \
	then \
		mkdir -p logs/ ; \
		$(CT_RUN) -suite $(addsuffix _SUITE,$(1)) $(CT_OPTS) ; \
	fi
	$(gen_verbose) rm -f test/*.beam
endef

$(foreach test,$(CT_SUITES),$(eval $(call ct_suite_target,$(test))))

clean-ct:
	$(gen_verbose) rm -rf test/*.beam

distclean-ct:
	$(gen_verbose) rm -rf logs/

# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: plt distclean-plt dialyze

# Configuration.

DIALYZER_PLT ?= $(CURDIR)/.$(PROJECT).plt
export DIALYZER_PLT

PLT_APPS ?=
DIALYZER_DIRS ?= --src -r src
DIALYZER_OPTS ?= -Werror_handling -Wrace_conditions \
	-Wunmatched_returns # -Wunderspecs

# Core targets.

distclean:: distclean-plt

help::
	@printf "%s\n" "" \
		"Dialyzer targets:" \
		"  plt         Build a PLT file for this project" \
		"  dialyze     Analyze the project using Dialyzer"

# Plugin-specific targets.

$(DIALYZER_PLT): deps app
	@dialyzer --build_plt --apps erts kernel stdlib $(PLT_APPS) $(ALL_DEPS_DIRS)

plt: $(DIALYZER_PLT)

distclean-plt:
	$(gen_verbose) rm -f $(DIALYZER_PLT)

ifneq ($(wildcard $(DIALYZER_PLT)),)
dialyze:
else
dialyze: $(DIALYZER_PLT)
endif
	@dialyzer --no_native $(DIALYZER_DIRS) $(DIALYZER_OPTS)

# Copyright (c) 2013-2014, Loïc Hoguin <essen@ninenines.eu>
# This file is part of erlang.mk and subject to the terms of the ISC License.

.PHONY: distclean-edoc

# Configuration.

EDOC_OPTS ?=

# Core targets.

docs:: distclean-edoc
	$(gen_verbose) erl -noshell \
		-eval 'edoc:application($(PROJECT), ".", [$(EDOC_OPTS)]), init:stop().'

distclean:: distclean-edoc

# Plugin-specific targets.

distclean-edoc:
	$(gen_verbose) rm -f doc/*.css doc/*.html doc/*.png doc/edoc-info