#!/usr/bin/env bash
# synergy-fleet: Manage Synergy KVM across t520 (server), bazina (levy_horni), penguin (levy_dolni), and boxC (pravy)
set -euo pipefail

cmd="${1:-status}"

ssh_penguin() {
    local remote_cmd="$1"
    if ssh -o ConnectTimeout=2 kof@192.168.1.105 "$remote_cmd" 2>/dev/null; then
        return 0
    elif ssh -o ConnectTimeout=2 -p 2205 kof@boxC "$remote_cmd" 2>/dev/null; then
        return 0
    fi
    return 1
}

case "$cmd" in
    start)
        echo "== Starting Synergy Server on t520 (Center) =="
        systemctl --user start synergy-server
        sleep 1

        echo "== Starting Synergy Client on bazina (Left-Top) =="
        ssh -o ConnectTimeout=3 bazina "systemctl --user start synergy-client" 2>/dev/null || echo "Warning: Could not start on bazina"

        echo "== Starting Synergy Client on boxC (Right) =="
        ssh -o ConnectTimeout=3 boxC "systemctl --user start synergy-client" 2>/dev/null || echo "Warning: Could not start on boxC"

        echo "== Starting Synergy Client on penguin (Left-Bottom) =="
        ssh_penguin "systemctl --user start synergy-client" || echo "Notice: penguin is offline / sleep or SSH port not forwarded"

        echo ""
        "$0" status
        ;;

    stop)
        echo "== Stopping Synergy across fleet =="
        systemctl --user stop synergy-server 2>/dev/null || true
        ssh -o ConnectTimeout=3 bazina "systemctl --user stop synergy-client" 2>/dev/null || true
        ssh -o ConnectTimeout=3 boxC "systemctl --user stop synergy-client" 2>/dev/null || true
        ssh_penguin "systemctl --user stop synergy-client" 2>/dev/null || true
        echo "All Synergy services stopped."
        ;;

    restart)
        "$0" stop
        sleep 1
        "$0" start
        ;;

    status)
        echo "== Fleet Synergy KVM Status =="
        echo -n "t520 (Server / Center): "
        systemctl --user is-active synergy-server 2>/dev/null || echo "inactive"

        echo -n "bazina (Client / Left-Top): "
        ssh -o ConnectTimeout=2 bazina "systemctl --user is-active synergy-client 2>/dev/null" || echo "unreachable"

        echo -n "penguin (Client / Left-Bottom): "
        ssh_penguin "systemctl --user is-active synergy-client 2>/dev/null" || echo "offline / SSH closed"

        echo -n "boxC (Client / Right): "
        ssh -o ConnectTimeout=2 boxC "systemctl --user is-active synergy-client 2>/dev/null" || echo "unreachable"

        if systemctl --user is-active synergy-server >/dev/null 2>&1; then
            echo ""
            echo "-- Active Client Connections to t520:24800 --"
            ss -tnp 2>/dev/null | grep ":24800" || echo "No clients currently connected to port 24800"
        fi
        ;;

    enable)
        echo "== Enabling Synergy autostart across fleet =="
        systemctl --user enable synergy-server
        ssh bazina "systemctl --user enable synergy-client" 2>/dev/null || true
        ssh boxC "systemctl --user enable synergy-client" 2>/dev/null || true
        ssh -o ConnectTimeout=3 kof@192.168.1.105 "systemctl --user enable synergy-client" 2>/dev/null || true
        echo "Autostart enabled on login."
        ;;

    disable)
        echo "== Disabling Synergy autostart across fleet =="
        systemctl --user disable synergy-server 2>/dev/null || true
        ssh bazina "systemctl --user disable synergy-client 2>/dev/null" || true
        ssh boxC "systemctl --user disable synergy-client 2>/dev/null" || true
        ssh -o ConnectTimeout=3 kof@192.168.1.105 "systemctl --user disable synergy-client 2>/dev/null" || true
        echo "Autostart disabled."
        ;;

    *)
        echo "Usage: synergy-fleet <start|stop|restart|status|enable|disable>"
        exit 1
        ;;
esac