usm/installer/pm_apt.sh

#!/bin/bash
# pm_apt.sh - APT package manager implementation for Debian/Ubuntu systems
# 
# To add a new package manager, create a file named pm_<name>.sh with:
#   - pm_<name>_detect: Returns 0 if this PM is available, 1 otherwise
#   - pm_<name>_get_missing_deps: Prints space-separated list of missing packages
#   - pm_<name>_install_missing_deps: Installs the missing packages

# Package names required by USM
APT_DEPS="valac meson ninja-build pkg-config gcc libglib2.0-dev libsodium-dev libjson-glib-dev libarchive-dev libgee-0.8-dev xz-utils gobject-introspection"

# Check if this package manager is available
pm_apt_detect() {
    command -v apt-get &>/dev/null
}

# Get list of missing dependencies
pm_apt_get_missing_deps() {
    local -a missing=()
    
    for pkg in $APT_DEPS; do
        if ! dpkg -l "$pkg" 2>/dev/null | grep -q "^ii"; then
            missing+=("$pkg")
        fi
    done
    
    echo "${missing[*]}"
}

# Install missing dependencies
pm_apt_install_missing_deps() {
    local missing=$(pm_apt_get_missing_deps)
    
    if [[ -z "$missing" ]]; then
        log_info "All dependencies are already installed"
        return 0
    fi
    
    log_step "Installing packages via apt: ${missing}"
    
    local sudo=""
    if ! is_root; then
        sudo=$(get_sudo)
    fi
    
    local apt_opts="-y -qq"
    if [[ "$ASSUME_YES" == "true" ]]; then
        apt_opts="-y -qq --allow-downgrades --allow-remove-essential --allow-change-held-packages"
    fi
    
    if [[ -n "$sudo" ]]; then
        DEBIAN_FRONTEND=noninteractive $sudo apt-get update -qq
        DEBIAN_FRONTEND=noninteractive $sudo apt-get install $apt_opts $missing
    else
        DEBIAN_FRONTEND=noninteractive apt-get update -qq
        DEBIAN_FRONTEND=noninteractive apt-get install $apt_opts $missing
    fi
}