# Volt Build System
# Usage: just <recipe>

# Default recipe - show help
default:
    @just --list

# ============================================================================
# BUILD TARGETS
# ============================================================================

# Build all components (debug)
build:
    cargo build --workspace

# Build all components (release, optimized)
release:
    cargo build --workspace --release

# Build only the VMM
build-vmm:
    cargo build -p volt-vmm

# Build only Stellarium
build-stellarium:
    cargo build -p stellarium

# ============================================================================
# TESTING
# ============================================================================

# Run all unit tests
test:
    cargo test --workspace

# Run tests with verbose output
test-verbose:
    cargo test --workspace -- --nocapture

# Run integration tests (requires KVM)
test-integration:
    cargo test --workspace --test '*' -- --ignored

# Run a specific test
test-one name:
    cargo test --workspace {{name}} -- --nocapture

# ============================================================================
# CODE QUALITY
# ============================================================================

# Run clippy linter
lint:
    cargo clippy --workspace --all-targets -- -D warnings

# Run rustfmt
fmt:
    cargo fmt --all

# Check formatting without modifying
fmt-check:
    cargo fmt --all -- --check

# Run all checks (fmt + lint + test)
check: fmt-check lint test

# ============================================================================
# DOCUMENTATION
# ============================================================================

# Build documentation
doc:
    cargo doc --workspace --no-deps

# Build and open documentation
doc-open:
    cargo doc --workspace --no-deps --open

# ============================================================================
# KERNEL & ROOTFS
# ============================================================================

# Build microVM kernel
build-kernel:
    ./scripts/build-kernel.sh

# Build test rootfs
build-rootfs:
    ./scripts/build-rootfs.sh

# Build all VM assets (kernel + rootfs)
build-assets: build-kernel build-rootfs

# ============================================================================
# RUNNING
# ============================================================================

# Run a test VM
run-vm:
    ./scripts/run-vm.sh

# Run VMM in debug mode
run-debug kernel rootfs:
    RUST_LOG=debug cargo run -- \
        --kernel {{kernel}} \
        --rootfs {{rootfs}} \
        --memory 128 \
        --cpus 1

# ============================================================================
# DEVELOPMENT
# ============================================================================

# Watch for changes and rebuild
watch:
    cargo watch -x 'build --workspace'

# Watch and run tests
watch-test:
    cargo watch -x 'test --workspace'

# Clean build artifacts
clean:
    cargo clean
    rm -rf kernels/*.vmlinux
    rm -rf images/*.img

# Show dependency tree
deps:
    cargo tree --workspace

# Update dependencies
update:
    cargo update

# ============================================================================
# CI/CD
# ============================================================================

# Full CI check (what CI runs)
ci: fmt-check lint test
    @echo "✓ All CI checks passed"

# Build release artifacts
dist: release
    mkdir -p dist
    cp target/release/volt-vmm dist/
    cp target/release/stellarium dist/
    @echo "Release artifacts in dist/"

# ============================================================================
# UTILITIES
# ============================================================================

# Show project stats
stats:
    @echo "Lines of Rust code:"
    @find . -name "*.rs" -not -path "./target/*" | xargs wc -l | tail -1
    @echo ""
    @echo "Crate sizes:"
    @du -sh target/release/volt-vmm 2>/dev/null || echo "  (not built)"
    @du -sh target/release/stellarium 2>/dev/null || echo "  (not built)"

# Check if KVM is available
check-kvm:
    @test -e /dev/kvm && echo "✓ KVM available" || echo "✗ KVM not available"
    @test -r /dev/kvm && echo "✓ KVM readable" || echo "✗ KVM not readable"
    @test -w /dev/kvm && echo "✓ KVM writable" || echo "✗ KVM not writable"