# 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_VERSION = 1

# Core configuration.

PROJECT ?= $(notdir $(CURDIR))

# 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.

define core_http_get
	wget --no-check-certificate -O $(1) $(2)|| rm $(1)
endef

# 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_FILE ?= $(CURDIR)/.erlang.mk.packages.v1
export PKG_FILE

PKG_FILE_URL ?= https://raw.githubusercontent.com/extend/erlang.mk/master/packages.v1.tsv

# Core targets.

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

distclean:: distclean-deps distclean-pkg

# Deps related targets.

define dep_fetch
	@mkdir -p $(DEPS_DIR)
ifeq (,$(findstring pkg://,$(word 1,$(dep_$(1)))))
	git clone -n -- $(word 1,$(dep_$(1))) $(DEPS_DIR)/$(1)
else
	@if [ ! -f $(PKG_FILE) ]; then $(call get_pkg_file); fi
	git clone -n -- `awk 'BEGIN { FS = "\t" }; \
		$$$$1 == "$(subst pkg://,,$(word 1,$(dep_$(1))))" { print $$$$2 }' \
		$(PKG_FILE)` $(DEPS_DIR)/$(1)
endif
	cd $(DEPS_DIR)/$(1) ; git checkout -q $(word 2,$(dep_$(1)))
endef

define dep_target
$(DEPS_DIR)/$(1):
	$(call dep_fetch,$(1))
endef

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

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

# Packages related targets.

$(PKG_FILE):
	$(call core_http_get,$(PKG_FILE),$(PKG_FILE_URL))

pkg-list: $(PKG_FILE)
	@cat $(PKG_FILE) | awk 'BEGIN { FS = "\t" }; { print \
		"Name:\t\t" $$1 "\n" \
		"Repository:\t" $$2 "\n" \
		"Website:\t" $$3 "\n" \
		"Description:\t" $$4 "\n" }'

ifdef q
pkg-search: $(PKG_FILE)
	@cat $(PKG_FILE) | grep -i ${q} | awk 'BEGIN { FS = "\t" }; { print \
		"Name:\t\t" $$1 "\n" \
		"Repository:\t" $$2 "\n" \
		"Website:\t" $$3 "\n" \
		"Description:\t" $$4 "\n" }'
else
pkg-search:
	@echo "Usage: make pkg-search q=STRING"
endif

distclean-pkg:
	$(gen_verbose) rm -f $(PKG_FILE)

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:: ebin/$(PROJECT).app
	$(eval MODULES := $(shell find ebin -type f -name \*.beam \
		| sed "s/ebin\//'/;s/\.beam/',/" | sed '$$s/.$$//'))
	$(appsrc_verbose) cat src/$(PROJECT).app.src \
		| sed "s/{modules,[[:space:]]*\[\]}/{modules, \[$(MODULES)\]}/" \
		> 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.

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

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

.PHONY: clean-c_src
# todo

# Configuration.

C_SRC_DIR = $(CURDIR)/c_src
C_SRC_ENV ?= $(C_SRC_DIR)/env.mk
C_SRC_OPTS ?=
C_SRC_OUTPUT ?= $(CURDIR)/priv/$(PROJECT).so

# Verbosity.

c_src_verbose_0 = @echo " C_SRC " $(?F);
c_src_verbose = $(appsrc_verbose_$(V))

# Targets.

ifeq ($(wildcard $(C_SRC_DIR)/Makefile),)

app:: $(C_SRC_ENV)
	@mkdir -p priv/
	$(c_src_verbose) gcc $(C_SRC_DIR)/*.c -fPIC -shared -o $(C_SRC_OUTPUT) \
		-I $(ERTS_INCLUDE_DIR) $(C_SRC_OPTS)

$(C_SRC_ENV):
	erl -noshell -noinput -eval "file:write_file(\"$(C_SRC_ENV)\", \
		io_lib:format(\"ERTS_INCLUDE_DIR ?= ~s/erts-~s/include/\", \
			[code:root_dir(), erlang:system_info(version)])), \
		init:stop()."

-include $(C_SRC_ENV)

else
ifneq ($(wildcard $(C_SRC_DIR),))

app::
	$(MAKE) -C $(C_SRC_DIR)

clean::
	$(MAKE) -C $(C_SRC_DIR) clean

endif
endif

clean:: clean-c_src

clean-c_src:
	$(gen_verbose) rm -f $(C_SRC_ENV) $(C_SRC_OUTPUT)

# 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 ?=
CT_SUITES ?=

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) -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-tests
	@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_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.

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

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

dialyze:
	@dialyzer --src src --no_native $(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.

# Verbosity.

dtl_verbose_0 = @echo " DTL   " $(filter %.dtl,$(?F));
dtl_verbose = $(dtl_verbose_$(V))

# Core targets.

define compile_erlydtl
	$(dtl_verbose) erl -noshell -pa ebin/ $(DEPS_DIR)/erlydtl/ebin/ -eval ' \
		Compile = fun(F) -> \
			Module = list_to_atom( \
				string:to_lower(filename:basename(F, ".dtl")) ++ "_dtl"), \
			erlydtl:compile(F, Module, [{out_dir, "ebin/"}]) \
		end, \
		_ = [Compile(F) || F <- string:tokens("$(1)", " ")], \
		init:stop()'
endef

ifneq ($(wildcard src/),)
ebin/$(PROJECT).app:: $(shell find templates -type f -name \*.dtl 2>/dev/null)
	$(if $(strip $?),$(call compile_erlydtl,$?))
endif

# 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

# 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-rel

# Configuration.

RELX_CONFIG ?= $(CURDIR)/relx.config

ifneq ($(wildcard $(RELX_CONFIG)),)

RELX ?= $(CURDIR)/relx
export RELX

RELX_URL ?= https://github.com/erlware/relx/releases/download/v1.0.2/relx
RELX_OPTS ?=
RELX_OUTPUT_DIR ?= _rel

ifneq ($(firstword $(subst -o,,$(RELX_OPTS))),)
	RELX_OUTPUT_DIR = $(firstword $(subst -o,,$(RELX_OPTS)))
endif

# Core targets.

rel:: distclean-rel $(RELX)
	@$(RELX) -c $(RELX_CONFIG) $(RELX_OPTS)

distclean:: distclean-rel

# Plugin-specific targets.

define relx_fetch
	$(call core_http_get,$(RELX),$(RELX_URL))
	chmod +x $(RELX)
endef

$(RELX):
	@$(call relx_fetch)

distclean-rel:
	$(gen_verbose) rm -rf $(RELX_OUTPUT_DIR)

endif