usm/installer/pm_apk.sh

#!/bin/bash
# pm_apk.sh - APK package manager implementation for Alpine Linux 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
APK_DEPS="vala meson ninja pkgconf gcc musl-dev glib-dev libsodium-dev json-glib-dev libarchive-dev libgee-dev xz gobject-introspection gobject-introspection-dev"

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

# Get list of missing dependencies
pm_apk_get_missing_deps() {
    local -a missing=()
    
    for pkg in $APK_DEPS; do
        if ! apk info -e "$pkg" &>/dev/null; then
            missing+=("$pkg")
        fi
    done
    
    echo "${missing[*]}"
}

# Install missing dependencies
pm_apk_install_missing_deps() {
    local missing=$(pm_apk_get_missing_deps)
    
    if [[ -z "$missing" ]]; then
        log_info "All dependencies are already installed"
        return 0
    fi
    
    log_step "Installing packages via apk: ${missing}"
    
    local sudo=""
    if ! is_root; then
        sudo=$(get_sudo)
    fi
    
    local apk_opts="--quiet"
    if [[ "$ASSUME_YES" == "true" ]]; then
        apk_opts="--quiet --force"
    fi
    
    if [[ -n "$sudo" ]]; then
        $sudo apk update
        $sudo apk add $apk_opts $missing
    else
        apk update
        apk add $apk_opts $missing
    fi
}