BINARY := rtsp-streamer
PKG := ./cmd/rtsp-streamer
BINDIR := bin

# Build metadata baked into the binary (see `rtsp-streamer version`).
VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
COMMIT  ?= $(shell git rev-parse --short HEAD 2>/dev/null || echo none)
DATE    ?= $(shell date -u +%Y-%m-%dT%H:%M:%SZ)
LDFLAGS := -s -w \
	-X main.version=$(VERSION) \
	-X main.commit=$(COMMIT) \
	-X main.date=$(DATE)

# Install location. Override with `make install PREFIX=/opt`.
PREFIX ?= /usr/local
DESTBIN := $(PREFIX)/bin/$(BINARY)

# Use sudo automatically when not already root, so `make install` /
# `make deploy` work whether or not you prefix them with sudo.
SUDO := $(shell [ "$$(id -u)" -eq 0 ] || echo sudo)

# The kiosk session unit restarted by `make deploy`.
KIOSK_UNIT ?= getty@tty1

.PHONY: all build pi pi32 test vet clean run-tui install deploy uninstall

all: build

## build: compile for the host platform (native arch)
build:
	go build -ldflags '$(LDFLAGS)' -o $(BINDIR)/$(BINARY) $(PKG)

## pi: cross-compile for Raspberry Pi 4 running a 64-bit OS (arm64)
pi:
	GOOS=linux GOARCH=arm64 go build -ldflags '$(LDFLAGS)' -o $(BINDIR)/$(BINARY)-arm64 $(PKG)

## pi32: cross-compile for a 32-bit Pi OS (armv7)
pi32:
	GOOS=linux GOARCH=arm GOARM=7 go build -ldflags '$(LDFLAGS)' -o $(BINDIR)/$(BINARY)-armv7 $(PKG)

## install: build for this machine and copy the binary to $(PREFIX)/bin
## (auto-sudo). This is the location the running daemon uses.
install: build
	$(SUDO) install -m 0755 $(BINDIR)/$(BINARY) $(DESTBIN)
	@echo "installed -> $(DESTBIN)"

## deploy: install, then restart the kiosk session so the wall picks it up
deploy: install
	$(SUDO) systemctl restart $(KIOSK_UNIT)
	@echo "restarted $(KIOSK_UNIT); run 'rtsp-streamer status' to check"

## uninstall: remove the installed binary
uninstall:
	$(SUDO) rm -f $(DESTBIN)
	@echo "removed $(DESTBIN)"

## test: run unit tests
test:
	go test ./...

## vet: run go vet
vet:
	go vet ./...

## run-tui: launch the configurator against a scratch config
run-tui: build
	RTSP_STREAMER_CONFIG=/tmp/rtsp-streamer.yaml $(BINDIR)/$(BINARY) tui

## clean: remove build artifacts
clean:
	rm -rf $(BINDIR)