# Copyright 2012 Erlware, LLC. All Rights Reserved.
#
# This file is provided to you under the Apache License,
# Version 2.0 (the "License"); you may not use this file
# except in compliance with the License.  You may obtain
# a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

# Source: https://gist.github.com/ericbmerritt/5706091


ERLFLAGS= -pa $(CURDIR)/.eunit -pa $(CURDIR)/ebin -pa $(CURDIR)/deps/*/ebin

DEPS_PLT=$(CURDIR)/.deps_plt
DEPS=erts kernel stdlib

# =============================================================================
# Verify that the programs we need to run are installed on this system
# =============================================================================
ERL = $(shell which erl)

ifeq ($(ERL),)
$(error "Erlang not available on this system")
endif

REBAR=$(shell which rebar)

ifeq ($(REBAR),)
$(error "Rebar not available on this system")
endif

DIALYZER=$(shell which dialyzer)

ifeq ($(DIALYZER),)
$(error "Dialyzer not available on this system")
endif

TYPER=$(shell which typer)

ifeq ($(TYPER),)
$(error "Typer not available on this system")
endif

.PHONY: all compile doc clean test dialyzer typer shell distclean pdf \
  update-deps clean-common-test-data rebuild

all: deps compile

# =============================================================================
# Rules to build the system
# =============================================================================

deps:
	$(REBAR) get-deps
	$(REBAR) compile

update-deps:
	$(REBAR) update-deps
	$(REBAR) compile

c_src/wterl.o: c_src/async_nif.h
	touch c_src/wterl.c

ebin/app_helper.beam:
	@echo You need to:
	@echo cp ../riak/deps/riak_core/ebin/app_helper.beam ebin
	@/bin/false

compile: c_src/wterl.o ebin/app_helper.beam
	$(REBAR) skip_deps=true compile

doc:
	$(REBAR) skip_deps=true doc

eunit: compile clean-common-test-data
	$(REBAR) skip_deps=true eunit

test: compile eunit

$(DEPS_PLT):
	@echo Building local plt at $(DEPS_PLT)
	@echo
	dialyzer --output_plt $(DEPS_PLT) --build_plt \
	   --apps $(DEPS) -r deps

dialyzer: $(DEPS_PLT)
	$(DIALYZER) --fullpath --plt $(DEPS_PLT) -Wrace_conditions -r ./ebin

typer:
	$(TYPER) --plt $(DEPS_PLT) -r ./src

xref:
	$(REBAR) xref skip_deps=true

# You often want *rebuilt* rebar tests to be available to the shell you have to
# call eunit (to get the tests rebuilt). However, eunit runs the tests, which
# probably fails (thats probably why You want them in the shell). This
# (prefixing the command with "-") runs eunit but tells make to ignore the
# result.
shell: deps compile
	- @$(REBAR) skip_deps=true eunit
	@$(ERL) $(ERLFLAGS)

pdf:
	pandoc README.md -o README.pdf

clean:
	- c_src/build_deps.sh clean
	- rm -rf $(CURDIR)/test/*.beam
	- rm -rf $(CURDIR)/logs
	- rm -rf $(CURDIR)/ebin
	$(REBAR) skip_deps=true clean

distclean: clean
	- rm -rf $(DEPS_PLT)
	- rm -rvf $(CURDIR)/deps

rebuild: distclean deps compile escript dialyzer test