#!/bin/bash
# pvmzup - Proxmox VM Backup Tool
# Part of pvmzync package

set -e

VERSION="1.0.0"
ZYNCLIB="/usr/lib/pvmzync/zynclib"

# Check if library exists
if [[ ! -f "$ZYNCLIB" ]]; then
    echo "Error: zynclib not found. Please install pvmzync-common package." >&2
    exit 1
fi

# Source the library
source "$ZYNCLIB"

# Default configuration
export SSH_DATA_DIR="${SSH_DATA_DIR:-/var/run/pvmzync/ssh}"
export RUNDIR="${RUNDIR:-/var/run/pvmzync}"
export ZFS_ANALYZER="${ZFS_ANALYZER:-/usr/lib/pvmzync/zynalyz}"

show_usage() {
    cat <<EOF
pvmzup - Proxmox VM Backup Tool v${VERSION}

Usage: pvmzup [OPTIONS] <vmid> <backup_host>

Options:
    -h, --help              Show this help
    -v, --version           Show version
    -n, --dry-run           Show what would be done
    -o, --org               Organization/client name
    -s, --source-pool       Source ZFS pool (default: rpool)
    -d, --dest-pool         Destination ZFS pool (default: backup)
    --retention             Keep last N backups (default: 7)
    
Examples:
    # Backup VM 100 to backup server
    pvmzup 100 backup-server
    
    # Backup with organization name
    pvmzup -o client1 100 backup-server:22

During backup, send USR1 signal to see progress:
    kill -USR1 \$(pidof pvmzup)

EOF
}

# TODO: Implement actual backup logic
# This is a stub that will be completed based on your requirements

main() {
    if [[ $# -eq 0 ]]; then
        show_usage
        exit 1
    fi
    
    case "$1" in
        -h|--help)
            show_usage
            exit 0
            ;;
        -v|--version)
            echo "pvmzup version ${VERSION}"
            exit 0
            ;;
        *)
            echo "Backup functionality to be implemented"
            echo "VMID: $1"
            exit 1
            ;;
    esac
}

main "$@"
