# Copyright 2017 the original author or authors.
#
# Licensed 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.
#

# Makefile to build all protobuf and gRPC related artifacts

THIS_MAKEFILE = $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
MAKEFILE_PATH := $(dir $(realpath $(THIS_MAKEFILE)))

default: build

PROTO_FILES := $(wildcard *.proto)
PROTO_PB2_FILES := $(foreach f,$(PROTO_FILES),$(subst .proto,_pb2.py,$(f)))
PROTO_DESC_FILES := $(foreach f,$(PROTO_FILES),$(subst .proto,.desc,$(f)))

PROTOC_PREFIX := /usr/local
PROTOC_LIBDIR := $(PROTOC_PREFIX)/lib

build: $(PROTO_PB2_FILES)

%_pb2.py: %.proto Makefile
	@echo "Building protocol buffer artifacts from $<"
	env LD_LIBRARY_PATH=$(PROTOC_LIBDIR) python -m grpc.tools.protoc \
		-I. \
		--python_out=. \
		--grpc_python_out=. \
		--descriptor_set_out=$(basename $<).desc \
		--include_imports \
		--include_source_info \
		$<

clean:
	rm -f $(PROTO_PB2_FILES) $(PROTO_DESC_FILES)

# xproto related targets
XOS_DIR=$(shell dirname $(shell dirname $(MAKEFILE_PATH)))
XOSGEN_PATH := $(XOS_DIR)/lib/xos-genx/xosgenx

# Note: If you want to generate a new file, you need to do two things: Add a
# line of the type specified in the following line, and add the generated file
# to "AUTOGENERATED" <file to be generated>: <xtarget template that it depends
# on>

$(XOS_DIR)/coreapi/protos/xos.proto: $(XOSGEN_PATH)/targets/protoapi.xtarget
$(XOS_DIR)/coreapi/xos_grpc_api.py: $(XOSGEN_PATH)/targets/grpc_api.xtarget
$(XOS_DIR)/coreapi/tests/list_test.py: $(XOSGEN_PATH)/targets/grpc_list_test.xtarget
$(XOS_DIR)/coreapi/tests/chameleon_list_test.sh: $(XOSGEN_PATH)/targets/chameleon_list_test.xtarget
$(XOS_DIR)/coreapi/protos/modeldefs.yaml: $(XOSGEN_PATH)/targets/modeldefs.xtarget

AUTOGENERATED=$(XOS_DIR)/coreapi/protos/xos.proto $(XOS_DIR)/coreapi/xos_grpc_api.py $(XOS_DIR)/coreapi/tests/list_test.py $(XOS_DIR)/coreapi/tests/chameleon_list_test.sh $(XOS_DIR)/coreapi/protos/modeldefs.yaml

XPROTO_FILES := $(wildcard $(XOS_DIR)/core/models/core.xproto $(XOS_DIR)/services/*/*.xproto $(XOS_DIR)/dynamic_services/*/*.xproto)

$(AUTOGENERATED):
	xosgenx --target $< $(XPROTO_FILES) > $@

rebuild-protos: $(AUTOGENERATED)

.PHONY: $(AUTOGENERATED) rebuild-protos