# Foodster. Run `make` for the target list.

COMPOSE ?= podman compose
BIN     := foodster
PKG     := ./cmd/foodster
STATIC  := cmd/foodster/static

# What `make image` last built. push reads it rather than re-deriving the tag:
# sorting tags by date is ambiguous when two point at the same commit, and
# re-deriving is what let a parallel make push the wrong one.
TAGFILE := .release-tag

# Vendored Datastar client. Bump, run `make vendor`, commit the result.
DATASTAR_VERSION ?= v1.0.3
SEED             ?= seeds/testi.json

# Registry coordinates, shared password and TZ live here. Gitignored.
ifneq (,$(wildcard .env))
include .env
export
endif

# Generated templ output is excluded — it is not ours to format.
GOFILES = $(shell find . -name '*.go' -not -name '*_templ.go' 2>/dev/null)

.DEFAULT_GOAL := help
.PHONY: help generate build run seed test smoke check lint fix icons vendor image push release up down logs clean

help: ## Show this help
	@grep -hE '^[a-zA-Z_-]+:.*## ' $(MAKEFILE_LIST) \
		| awk -F':.*## ' '{printf "  \033[1m%-9s\033[0m %s\n", $$1, $$2}'

generate: ## Generate Go from .templ files
	go tool templ generate

build: generate ## Build ./foodster
	CGO_ENABLED=0 go build -trimpath \
		-ldflags="-s -w -X main.version=dev" -o $(BIN) $(PKG)

run: generate ## Run locally on :8080 (database in ./data)
	FOODSTER_PASSWORD=$${FOODSTER_PASSWORD:-dev} go run $(PKG)

seed: ## Import a dish bundle (SEED=seeds/testi.json)
	go run $(PKG) -import $(SEED)

test: generate ## Run unit tests
	go test ./...

smoke: generate ## End-to-end check: auth, static assets, bundle import
	./scripts/smoke.sh

# Sub-makes rather than prerequisites: these must run in order even under
# `make -j`, and a parallel run vets generated code that is being rewritten.
check: ## Everything that must pass before a commit
	@$(MAKE) --no-print-directory lint
	@$(MAKE) --no-print-directory test
	@$(MAKE) --no-print-directory smoke
	@echo "check: all passed"

icons: ## Rasterise home-screen PNGs from assets/icon.svg and optimise them
	rsvg-convert -w 180 -h 180 assets/icon.svg -o $(STATIC)/apple-touch-icon.png
	rsvg-convert -w 192 -h 192 assets/icon.svg -o $(STATIC)/icon-192.png
	rsvg-convert -w 512 -h 512 assets/icon.svg -o $(STATIC)/icon-512.png
	# oxipng -o max alone loses to optipng on the 512; --zopfli wins at every
	# size. Slow, but these are three tiny files built by hand.
	oxipng -o max --zopfli --quiet \
		$(STATIC)/apple-touch-icon.png $(STATIC)/icon-192.png $(STATIC)/icon-512.png
	@ls -l $(STATIC)/*.png

vendor: ## Re-download the Datastar client (DATASTAR_VERSION=v1.0.3)
	curl -sSfL -o $(STATIC)/datastar.js \
		"https://cdn.jsdelivr.net/gh/starfederation/datastar@$(DATASTAR_VERSION)/bundles/datastar.js"
	@head -1 $(STATIC)/datastar.js

lint: generate ## go vet, gofmt check, golangci-lint when installed
	go vet ./...
	@bad=$$(gofmt -l $(GOFILES) 2>/dev/null); \
	if [ -n "$$bad" ]; then echo "gofmt needed:"; echo "$$bad"; exit 1; fi
	@if command -v golangci-lint >/dev/null 2>&1; then golangci-lint run; \
	else echo "golangci-lint not installed - skipped"; fi

fix: ## Format Go and templ sources, tidy go.mod
	@if [ -n "$(GOFILES)" ]; then gofmt -w $(GOFILES); fi
	go tool templ fmt .
	go mod tidy

image: ## Build and tag an image as vYYYYMMDD-N. Creates a git tag.
	@test -n "$(FOODSTER_REPO)" || { echo "set FOODSTER_REPO in .env"; exit 1; }
	@# A release tag must point into main, or the tag records a commit that
	@# was never released.
	@branch=$$(git symbolic-ref --short HEAD); \
	if [ "$$branch" != "main" ]; then \
		echo "releases are cut from main, not $$branch:"; \
		echo "  git switch main && git merge --ff-only dev"; \
		exit 1; \
	fi
	@day=$$(date +%Y%m%d); \
	tag="v$$day-$$(( $$(git tag -l "v$$day-*" | wc -l) + 1 ))"; \
	echo "==> $$tag"; \
	git tag "$$tag"; \
	podman build --platform linux/amd64 --build-arg VERSION="$$tag" \
		-t "$(FOODSTER_REPO):$$tag" -t "$(FOODSTER_REPO):latest" . ; \
	echo "$$tag" > $(TAGFILE)

# Pushing reported success while uploading the previous release once, because
# nothing compared what was built against what arrived. So afterwards, ask the
# registry what it actually serves for each tag and fail if it is not the
# image we just built.
push: ## Push the newest tag and :latest, then verify the registry
	@test -n "$(FOODSTER_REPO)" || { echo "set FOODSTER_REPO in .env"; exit 1; }
	@test -f $(TAGFILE) || { echo "nothing built - run make image"; exit 1; }; \
	tag=$$(cat $(TAGFILE)); \
	built=$$(podman image inspect "$(FOODSTER_REPO):$$tag" --format '{{.Id}}' 2>/dev/null) || \
		{ echo "no local image tagged $$tag - run make image"; exit 1; }; \
	podman push "$(FOODSTER_REPO):$$tag"; \
	podman push "$(FOODSTER_REPO):latest"; \
	echo "==> verifying $$tag"; \
	for ref in "$$tag" latest; do \
		podman pull -q "$(FOODSTER_REPO):$$ref" >/dev/null 2>&1 || \
			{ echo "  FAIL  $$ref is not in the registry"; exit 1; }; \
		served=$$(podman image inspect "$(FOODSTER_REPO):$$ref" --format '{{.Id}}'); \
		if [ "$$served" != "$$built" ]; then \
			echo "  FAIL  $$ref serves $$served"; \
			echo "        expected $$built"; \
			exit 1; \
		fi; \
		echo "  ok    $$ref"; \
	done

# Sub-makes, not prerequisites. Under `make -j` — and -j16 is the default on
# at least one machine here — these run concurrently, so push resolves the
# newest tag and uploads :latest before image has finished building and
# tagging. That silently ships the previous release a second time.
release: ## Build, tag and push in one go
	@$(MAKE) --no-print-directory image
	@$(MAKE) --no-print-directory push

up: ## Start the stack
	@mkdir -p data   # or the engine creates it root-owned and the app cannot write
	$(COMPOSE) up -d

down: ## Stop the stack
	$(COMPOSE) down

logs: ## Follow app logs
	$(COMPOSE) logs -f app

clean: ## Remove the binary and generated templates
	rm -f $(BIN)
	find . -name '*_templ.go' -delete