# novox/hq ADR 0006 — the control plane, in Go.
#
# The image the bundle pins holds the program and nothing else, so the build is static and the
# container is built FROM scratch. That is not a size optimisation: this image is fetched by
# digest and run on a machine where no mesh exists to check anything, and everything in it is
# something a person would have to audit.

VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo development)
LDFLAGS := -s -w -X main.version=$(VERSION)

# Where `make check` raises PostgreSQL. A high port and a throwaway container: nothing here
# touches a database anybody else is using. Override PG_PORT if this one is taken -- the first
# port chosen was already serving something that had been up for six days.
PG_PORT      ?= 55532
PG_CONTAINER ?= mesh-control-check
PG_IMAGE     ?= postgres:17-alpine
export MESH_TEST_POSTGRES ?= postgres://postgres:check@127.0.0.1:$(PG_PORT)/postgres?sslmode=disable

.PHONY: build image check test vet fmt postgres postgres-stop clean

build:
	CGO_ENABLED=0 go build -trimpath -ldflags '$(LDFLAGS)' -o build/mesh-control ./cmd/mesh-control

IMAGE ?= mesh-control:$(VERSION)

image:
	docker build --build-arg VERSION=$(VERSION) -t $(IMAGE) .
	@echo
	@docker image inspect $(IMAGE) --format 'built {{.RepoTags}}  {{.Size}} bytes'

# The whole gate. Raises a database, runs everything against it, and takes it down again --
# including when the tests fail, which is why the teardown is not conditional.
check: fmt vet postgres
	@go test ./... ; status=$$? ; $(MAKE) postgres-stop ; exit $$status

# Without a database the live tests skip rather than fail, so this is the honest subset and not
# the gate.
test:
	go test ./...

vet:
	go vet ./...

fmt:
	@unformatted=$$(gofmt -l . 2>/dev/null) ; \
	if [ -n "$$unformatted" ] ; then echo "not gofmt'd:" ; echo "$$unformatted" ; exit 1 ; fi

postgres:
	@docker rm -f $(PG_CONTAINER) >/dev/null 2>&1 || true
	@docker run -d --name $(PG_CONTAINER) -e POSTGRES_PASSWORD=check \
		-p 127.0.0.1:$(PG_PORT):5432 $(PG_IMAGE) >/dev/null
	@printf 'waiting for postgres'
	@for i in $$(seq 1 60) ; do \
		if docker exec $(PG_CONTAINER) pg_isready -U postgres >/dev/null 2>&1 ; then \
			echo ' — ready' ; exit 0 ; fi ; \
		printf '.' ; sleep 1 ; \
	done ; \
	echo ' — never came up' ; docker logs $(PG_CONTAINER) | tail -20 ; exit 1

postgres-stop:
	@docker rm -f $(PG_CONTAINER) >/dev/null 2>&1 || true

clean:
	rm -rf build/