.PHONY: deploy clean help check-nas all

NAS_HOST=phoenix
NAS_PATH=/srv/netboot
SCRIPT_DIR=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))

# Source files that trigger a rebuild
BUILD_SOURCES := $(SCRIPT_DIR)/build-image.sh \
                 $(wildcard $(SCRIPT_DIR)/initramfs/*) \
                 $(wildcard $(SCRIPT_DIR)/initramfs/*/*) \
                 $(wildcard $(SCRIPT_DIR)/files/*) \
                 $(wildcard $(SCRIPT_DIR)/secrets/*.yaml)

# Build artifact (used as target for dependency tracking)
BUILD_ARTIFACT := $(SCRIPT_DIR)/http/filesystem.squashfs

help:
	@echo "Netboot image build and deployment"
	@echo ""
	@echo "Targets:"
	@echo "  make build      - Build the netboot image (kernel, initramfs, squashfs)"
	@echo "  make deploy     - Sync built artifacts to NAS ($(NAS_HOST))"
	@echo "  make all        - Build and deploy in one step"
	@echo "  make check-nas  - Verify NAS is reachable"
	@echo "  make clean      - Remove build artifacts"
	@echo ""
	@echo "Configuration:"
	@echo "  NAS_HOST=$(NAS_HOST)"
	@echo "  NAS_PATH=$(NAS_PATH)"
	@echo ""

check-nas:
	@echo "Checking NAS connectivity..."
	@ping -c 1 $(NAS_HOST) > /dev/null 2>&1 && echo "✓ NAS is reachable" || (echo "✗ Cannot reach $(NAS_HOST)"; exit 1)

# Build depends on source files - only rebuilds if sources changed
$(BUILD_ARTIFACT): $(BUILD_SOURCES)
	@echo "Building netboot image..."
	@echo "This will take 15-30 minutes..."
	sudo $(SCRIPT_DIR)/build-image.sh
	@echo ""
	@echo "Build complete!"
	@echo "Artifacts ready in $(SCRIPT_DIR)/http/"
	@du -sh $(SCRIPT_DIR)/http/*

build: $(BUILD_ARTIFACT)

deploy: check-nas
	@echo "Deploying to NAS ($(NAS_HOST):$(NAS_PATH))..."
	@echo "Syncing http/ directory..."
	rsync -avz --delete $(SCRIPT_DIR)/http/ $(NAS_HOST):$(NAS_PATH)/http/
	@echo "Syncing tftp/ directory (iPXE bootloader)..."
	rsync -avz $(SCRIPT_DIR)/tftp/ $(NAS_HOST):$(NAS_PATH)/tftp/
	@echo ""
	@echo "✓ Deployment complete!"
	@echo "Images are now live on $(NAS_HOST)"
	@ssh $(NAS_HOST) "ls -lh $(NAS_PATH)/http/ | grep -E '(vmlinuz|initrd|squashfs)'"

all: build deploy
	@echo ""
	@echo "✓ Build and deployment complete!"

clean:
	@echo "Cleaning build artifacts..."
	@if [ -d "$(SCRIPT_DIR)/build/rootfs" ]; then \
		echo "Unmounting any stray mounts from $(SCRIPT_DIR)/build/rootfs..."; \
		mount | grep "$(SCRIPT_DIR)/build/rootfs" | awk '{print $$3}' | while read mount; do \
			echo "  Unmounting $$mount"; \
			sudo umount -l "$$mount" 2>/dev/null || true; \
		done; \
	fi
	@echo "Removing build directories..."
	sudo rm -rf $(SCRIPT_DIR)/build/rootfs
	sudo rm -rf $(SCRIPT_DIR)/images
	@echo "✓ Cleaned!"

.DEFAULT_GOAL := help