BINARIES     := maglevd maglevc maglevd-frontend
MODULE       := git.ipng.ch/ipng/vpp-maglev
PROTO_DIR    := proto
PROTO_FILE   := $(PROTO_DIR)/maglev.proto
GEN_FILES    := internal/grpcapi/maglev.pb.go internal/grpcapi/maglev_grpc.pb.go

# Web bundle is built by Vite and embedded by the Go binary via //go:embed.
# Any change under cmd/frontend/web/src/ retriggers an npm build; the
# generated cmd/frontend/web/dist/index.html is the sentinel.
FRONTEND_WEB_SRC := $(shell find cmd/frontend/web/src -type f 2>/dev/null) \
                    cmd/frontend/web/index.html \
                    cmd/frontend/web/package.json \
                    cmd/frontend/web/vite.config.ts \
                    cmd/frontend/web/tsconfig.json
FRONTEND_WEB_DIST := cmd/frontend/web/dist/index.html

NATIVE_ARCH  := $(shell go env GOARCH)
VERSION      := 0.9.1
COMMIT_HASH  := $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
DATE         := $(shell date -u +%Y-%m-%dT%H:%M:%SZ)
LDFLAGS      := -X '$(MODULE)/cmd.version=$(VERSION)' \
                -X '$(MODULE)/cmd.commit=$(COMMIT_HASH)' \
                -X '$(MODULE)/cmd.date=$(DATE)'

TEST ?= tests/

VPP_API_DIR ?= $(HOME)/src/vpp/build-root/install-vpp_debug-native/vpp/share/vpp/api

.PHONY: all build build-amd64 build-arm64 test proto vpp-binapi lint fixstyle fixstyle-web pkg-deb robot-test clean maglevd-frontend-web

all: build

build: $(GEN_FILES) $(FRONTEND_WEB_DIST)
	mkdir -p build/$(NATIVE_ARCH)
	go build -ldflags "$(LDFLAGS)" -o build/$(NATIVE_ARCH)/maglevd ./cmd/maglevd/
	go build -ldflags "$(LDFLAGS)" -o build/$(NATIVE_ARCH)/maglevc ./cmd/maglevc/
	go build -ldflags "$(LDFLAGS)" -o build/$(NATIVE_ARCH)/maglevd-frontend ./cmd/frontend/

build-amd64: $(GEN_FILES) $(FRONTEND_WEB_DIST)
	mkdir -p build/amd64
	GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o build/amd64/maglevd ./cmd/maglevd/
	GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o build/amd64/maglevc ./cmd/maglevc/
	GOOS=linux GOARCH=amd64 go build -ldflags "$(LDFLAGS)" -o build/amd64/maglevd-frontend ./cmd/frontend/

build-arm64: $(GEN_FILES) $(FRONTEND_WEB_DIST)
	mkdir -p build/arm64
	GOOS=linux GOARCH=arm64 go build -ldflags "$(LDFLAGS)" -o build/arm64/maglevd ./cmd/maglevd/
	GOOS=linux GOARCH=arm64 go build -ldflags "$(LDFLAGS)" -o build/arm64/maglevc ./cmd/maglevc/
	GOOS=linux GOARCH=arm64 go build -ldflags "$(LDFLAGS)" -o build/arm64/maglevd-frontend ./cmd/frontend/

# maglevd-frontend-web rebuilds the SolidJS bundle. The Go binary embeds the
# resulting cmd/frontend/web/dist/ via //go:embed, so a `go build` after
# this target picks up any asset changes automatically.
maglevd-frontend-web: $(FRONTEND_WEB_DIST)

$(FRONTEND_WEB_DIST): $(FRONTEND_WEB_SRC)
	cd cmd/frontend/web && npm install && npm run build

pkg-deb: build-amd64 build-arm64
	debian/build-deb.sh amd64 $(VERSION)
	debian/build-deb.sh arm64 $(VERSION)

test: $(GEN_FILES)
	go test ./...

proto: $(GEN_FILES)

$(GEN_FILES): $(PROTO_FILE)
	protoc \
		--go_out=. --go_opt=module=$(MODULE) \
		--go-grpc_out=. --go-grpc_opt=module=$(MODULE) \
		$(PROTO_FILE)

# vpp-binapi regenerates the Go bindings for VPP API files used by maglevd
# from a local VPP build. The LB plugin ships with upstream VPP; any newer
# messages (e.g. lb_conf_get, lb_as_v2_dump) require a VPP build that has
# them. Override VPP_API_DIR on the command line to point at another tree:
#   make vpp-binapi VPP_API_DIR=/path/to/share/vpp/api
vpp-binapi:
	@command -v binapi-generator >/dev/null 2>&1 || { \
		echo "installing binapi-generator..."; \
		go install go.fd.io/govpp/cmd/binapi-generator@v0.12.0; \
	}
	rm -rf internal/vpp/binapi
	mkdir -p internal/vpp/binapi
	binapi-generator \
		--input=$(VPP_API_DIR) \
		--output-dir=internal/vpp/binapi \
		--import-prefix=$(MODULE)/internal/vpp/binapi \
		--no-source-path-info \
		--no-version-info \
		lb lb_types
	rm -f internal/vpp/binapi/lb/lb_rpc.ba.go

fixstyle: fixstyle-web
	gofmt -w .

fixstyle-web:
	cd cmd/frontend/web && npx prettier --write .

lint:
	golangci-lint run ./...

tests/.venv: tests/requirements.txt
	python3 -m venv tests/.venv
	tests/.venv/bin/pip install -q -r tests/requirements.txt

robot-test: build tests/.venv
	tests/rf-run.sh docker $(TEST)

clean:
	rm -rf build/
	rm -f $(GEN_FILES)