wayvnc/examples/event-watcher

#!/bin/bash
#
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WAYVNCCTL=${WAYVNCCTL:-wayvncctl}

connection_count_now() {
    echo "Total clients: $1"
}

while IFS= read -r EVT; do
    case "$(jq -r '.method' <<<"$EVT")" in
        client-*onnected)
            count=$(jq -r '.params.connection_count' <<<"$EVT")
            connection_count_now "$count"
            ;;
        wayvnc-shutdown)
            echo "wayvncctl is no longer running"
            connection_count_now 0
            ;;
        wayvnc-startup)
            echo "Ready to receive wayvnc events"
            ;;
    esac
done < <("$WAYVNCCTL" --wait --reconnect --json event-receive)