# Fenris Makefile
# Spec: §10.1-10.6

SHELL := /bin/bash
PYTHON := python3
VENV_DIR := /opt/fenris
BIN_DIR := /usr/local/bin
LIBEXEC_DIR := /usr/libexec/fenris
UNIT_DIR := /etc/systemd/system
POLKIT_DIR := /usr/share/polkit-1/actions
CONF_DIR := /etc/fenris
DATA_DIR := /var/lib/fenris

# Placement manifest
MANIFEST := manifest.txt

.PHONY: help install upgrade uninstall purge update-deps test lint

help:
	@echo "Fenris NVMe endurance monitor"
	@echo ""
	@echo "Targets:"
	@echo "  install    - Install Fenris (builds wheel, installs to /opt/fenris)"
	@echo "  upgrade    - Upgrade Fenris (reinstall wheel, sync units)"
	@echo "  uninstall  - Uninstall Fenris (preserves config and store)"
	@echo "  purge      - Remove everything including config and store"
	@echo "  test       - Run tests"
	@echo "  lint       - Run linter"
	@echo "  update-deps - Update dependency pins"

# ─── Build ──────────────────────────────────────────────────────────────────

dist/fenris-*.whl: pyproject.toml src/fenris/*.py
	@mkdir -p dist
	$(PYTHON) -m build --wheel -o dist

# ─── Install ────────────────────────────────────────────────────────────────

install: dist/fenris-*.whl
	@echo "=== Verifying prerequisites ==="
	@$(PYTHON) --version 2>/dev/null || (echo "Error: python3 not found"; exit 1)
	@smartctl --version 2>/dev/null | head -1 || (echo "Error: smartctl not found"; exit 1)
	
	@echo "=== Creating directories ==="
	@sudo mkdir -p $(LIBEXEC_DIR)
	@sudo mkdir -p $(CONF_DIR)
	@sudo mkdir -p $(DATA_DIR)
	@sudo mkdir -p $(POLKIT_DIR)
	
	@echo "=== Creating data directory ==="
	@sudo install -d -o root -g fenris -m 2750 $(DATA_DIR) 2>/dev/null || 		sudo groupadd -f fenris && 		sudo install -d -o root -g fenris -m 2750 $(DATA_DIR)
	
	@echo "=== Installing venv ==="
	@sudo rm -rf $(VENV_DIR)
	@sudo $(PYTHON) -m venv $(VENV_DIR)
	@sudo $(VENV_DIR)/bin/pip install --upgrade pip
	@sudo $(VENV_DIR)/bin/pip install dist/fenris-*.whl
	
	@echo "=== Installing wrapper ==="
	@sudo install -m 0755 scripts/fenris $(BIN_DIR)/fenris
	
	@echo "=== Installing helpers ==="
	@sudo install -m 0755 src/fenris/monitor.py $(LIBEXEC_DIR)/fenris-monitor
	@sudo install -m 0755 src/fenris/collect.py $(LIBEXEC_DIR)/fenris-collect
	
	@echo "=== Installing systemd units ==="
	@sudo install -m 0644 units/fenris-collect.timer $(UNIT_DIR)/
	@sudo install -m 0644 units/fenris-collect.service $(UNIT_DIR)/
	@sudo systemctl daemon-reload
	
	@echo "=== Installing polkit policy ==="
	@sudo install -m 0644 polkit/com.bongbetic.fenris.monitor.policy $(POLKIT_DIR)/
	
	@echo "=== Creating manifest ==="
	@echo "# Fenris placement manifest - do not edit" > $(MANIFEST)
	@echo "# Generated by install target" >> $(MANIFEST)
	@echo "$(BIN_DIR)/fenris" >> $(MANIFEST)
	@echo "$(LIBEXEC_DIR)/fenris-monitor" >> $(MANIFEST)
	@echo "$(LIBEXEC_DIR)/fenris-collect" >> $(MANIFEST)
	@echo "$(UNIT_DIR)/fenris-collect.timer" >> $(MANIFEST)
	@echo "$(UNIT_DIR)/fenris-collect.service" >> $(MANIFEST)
	@echo "$(POLKIT_DIR)/com.bongbetic.fenris.monitor.policy" >> $(MANIFEST)
	@echo "$(VENV_DIR)" >> $(MANIFEST)
	@echo "$(DATA_DIR)" >> $(MANIFEST)
	
	@echo "=== Install complete ==="
	@echo "Units installed but NOT enabled or started."
	@echo "To start monitoring: fenris monitor resume"

# ─── Upgrade ────────────────────────────────────────────────────────────────

upgrade: dist/fenris-*.whl
	@echo "=== Upgrading Fenris ==="
	@echo "=== Installing new wheel ==="
	@sudo $(VENV_DIR)/bin/pip install dist/fenris-*.whl
	
	@echo "=== Syncing units ==="
	@sudo install -m 0644 units/fenris-collect.timer $(UNIT_DIR)/
	@sudo install -m 0644 units/fenris-collect.service $(UNIT_DIR)/
	@sudo install -m 0644 polkit/com.bongbetic.fenris.monitor.policy $(POLKIT_DIR)/
	@sudo install -m 0755 scripts/fenris $(BIN_DIR)/fenris
	@sudo install -m 0755 src/fenris/monitor.py $(LIBEXEC_DIR)/fenris-monitor
	@sudo install -m 0755 src/fenris/collect.py $(LIBEXEC_DIR)/fenris-collect
	@sudo systemctl daemon-reload
	
	# Restart timer only if active and contents changed
	@if systemctl is-active --quiet fenris-collect.timer; then 		echo "=== Restarting timer (active) ==="; 		sudo systemctl restart fenris-collect.timer; 	fi
	
	@echo "=== Upgrade complete ==="

# ─── Uninstall ──────────────────────────────────────────────────────────────

uninstall:
	@echo "=== Uninstalling Fenris ==="
	
	# Sanctioned disable first (§10.4)
	@if [ -x $(LIBEXEC_DIR)/fenris-monitor ]; then 		echo "=== Performing sanctioned disable ==="; 		sudo $(LIBEXEC_DIR)/fenris-monitor disable --now || true; 	fi
	
	# Stop and disable units
	@echo "=== Stopping units ==="
	@sudo systemctl stop fenris-collect.timer 2>/dev/null || true
	@sudo systemctl disable fenris-collect.timer 2>/dev/null || true
	@sudo systemctl daemon-reload
	
	# Remove installed files (preserving /etc/fenris and /var/lib/fenris)
	@echo "=== Removing files ==="
	@-rm -f $(BIN_DIR)/fenris
	@-rm -f $(LIBEXEC_DIR)/fenris-monitor
	@-rm -f $(LIBEXEC_DIR)/fenris-collect
	@-rmdir $(LIBEXEC_DIR) 2>/dev/null || true
	@-rm -f $(UNIT_DIR)/fenris-collect.timer
	@-rm -f $(UNIT_DIR)/fenris-collect.service
	@-rm -f $(POLKIT_DIR)/com.bongbetic.fenris.monitor.policy
	@sudo rm -rf $(VENV_DIR)
	@-rm -f $(MANIFEST)
	
	@echo "=== Uninstall complete ==="
	@echo "Config preserved at $(CONF_DIR)"
	@echo "Store preserved at $(DATA_DIR)"

# ─── Purge ──────────────────────────────────────────────────────────────────

purge: uninstall
	@echo "=== Purging Fenris ==="
	@-sudo rm -rf $(CONF_DIR)
	@-sudo rm -rf $(DATA_DIR)
	@echo "=== Purge complete ==="

# ─── Test ───────────────────────────────────────────────────────────────────

test:
	$(PYTHON) -m pytest tests/ -v

# ─── Lint ───────────────────────────────────────────────────────────────────

lint:
	$(PYTHON) -m ruff check src/ tests/

# ─── Dependencies ───────────────────────────────────────────────────────────

update-deps:
	$(PYTHON) -m pip compile pyproject.toml -o requirements.txt