# Copyright © 2025 Apple Inc. and the container project authors. All rights reserved.
#
# 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
#
#   https://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.

ROOT_DIR := $(shell git rev-parse --show-toplevel)
LOCAL_DIR := $(ROOT_DIR)/.local
LOCALBIN := $(LOCAL_DIR)/bin

BUILDER_SHIM_REPO ?= https://github.com/apple/container-builder-shim.git

## Versions
BUILDER_SHIM_VERSION ?= $(shell sed -n 's/let builderShimVersion *= *"\(.*\)"/\1/p' Package.swift)
PROTOC_VERSION=26.1

# protoc binary installation
PROTOC_ZIP = protoc-$(PROTOC_VERSION)-osx-universal_binary.zip
PROTOC = $(LOCALBIN)/protoc@$(PROTOC_VERSION)/protoc
$(PROTOC):
	@echo Downloading protocol buffers...
	@mkdir -p $(LOCAL_DIR)
	@curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v$(PROTOC_VERSION)/$(PROTOC_ZIP)
	@mkdir -p $(dir $@)
	@unzip -jo $(PROTOC_ZIP) bin/protoc -d $(dir $@)
	@unzip -o $(PROTOC_ZIP) 'include/*' -d $(dir $@)
	@rm -f $(PROTOC_ZIP)

protoc_gen_grpc_swift:
	@$(SWIFT) build --product protoc-gen-grpc-swift

protoc-gen-swift:
	@$(SWIFT) build --product protoc-gen-swift

protos: $(PROTOC) protoc-gen-swift protoc_gen_grpc_swift 
	@echo Generating protocol buffers source code...
	@mkdir -p $(LOCAL_DIR)
	@cd $(LOCAL_DIR) && git clone --branch $(BUILDER_SHIM_VERSION) --depth 1 $(BUILDER_SHIM_REPO)
	@$(PROTOC) $(LOCAL_DIR)/container-builder-shim/pkg/api/Builder.proto \
		--plugin=protoc-gen-grpc-swift=$(BUILD_BIN_DIR)/protoc-gen-grpc-swift \
		--plugin=protoc-gen-swift=$(BUILD_BIN_DIR)/protoc-gen-swift \
		--proto_path=$(LOCAL_DIR)/container-builder-shim/pkg/api \
		--grpc-swift_out="Sources/ContainerBuild" \
		--grpc-swift_opt=Visibility=Public \
		--swift_out="Sources/ContainerBuild" \
		--swift_opt=Visibility=Public \
		-I.
	@"$(MAKE)" update-licenses

clean-proto-tools:
	@rm -rf $(LOCAL_DIR)/bin
	@rm -rf $(LOCAL_DIR)/container-builder-shim
	@echo "Removed $(LOCAL_DIR)/bin toolchains."