# Check dependencies for Ubuntu uBlue ComposeFS Alternative
check_dependencies() {
    local deps=(
        "mount"      # Filesystem mounting
        "umount"     # Filesystem unmounting
        "findmnt"    # Mount point detection
        "losetup"    # Loop device management
        "sha256sum"  # Hash generation
        "jq"         # JSON processing
        "tar"        # Archive operations
        "mksquashfs" # SquashFS creation
        "unsquashfs" # SquashFS extraction
        "nproc"      # CPU core detection
        "du"         # Disk usage
        "stat"       # File status
        "modprobe"   # Kernel module loading
        "mountpoint" # Mount point checking
    )
    local missing=()
    
    for dep in "${deps[@]}"; do
        if ! command -v "$dep" &> /dev/null; then
            missing+=("$dep")
        fi
    done
    
    if [[ ${#missing[@]} -gt 0 ]]; then
        log_error "Missing required dependencies: ${missing[*]}" "composefs-alternative"
        log_error "Please install the missing packages (squashfs-tools, jq, coreutils, util-linux)" "composefs-alternative"
        exit 1
    fi
    
    log_info "All dependencies are available" "composefs-alternative"
}

# Check kernel modules
check_kernel_modules() {
    local modules=("squashfs" "overlay")
    local missing_modules=()
    
    for module in "${modules[@]}"; do
        if ! modprobe -n "$module" >/dev/null 2>&1; then
            missing_modules+=("$module")
        fi
    done
    
    if [[ ${#missing_modules[@]} -gt 0 ]]; then
        log_warning "Missing kernel modules: ${missing_modules[*]}" "composefs-alternative"
        log_warning "Some features may not work correctly" "composefs-alternative"
        return 1
    fi
    
    log_info "All required kernel modules are available" "composefs-alternative"
    return 0
}