import pysmu
from device_worker import DeviceWorker

class MultiLogger:
    """
    Verwaltet eine Session und mehrere DeviceWorker.
    Session wird EINMAL im Hauptthread gestartet – wie beim Single-Logger.
    """
    def __init__(self, outdir="./logs", filter_window_size=10, interval=0.1):
        self.sess = pysmu.Session()
        self.sess.add_all()
        self.devices = list(self.sess.devices)
        self.workers = [DeviceWorker(dev, outdir, filter_window_size, interval)
                        for dev in self.devices]

    def set_default_modes(self):
        for w in self.workers:
            try:
                w.set_mode("A", pysmu.Mode.SIMV)
                w.set_mode("B", pysmu.Mode.HI_Z)
            except Exception as e:
                print(f"[{w.serial}] Mode-Set-Fehler: {e}")

    # Session zentral steuern:
    def start_session(self):
        # WICHTIG: im Hauptthread aufrufen (vor den GUI-Events)
        self.sess.start(0)

    def end_session(self):
        self.sess.end()

    # Helfer:
    def start_all(self):
        for w in self.workers: w.start()

    def stop_all(self):
        for w in self.workers: w.stop()

    def shutdown(self):
        for w in self.workers: w.shutdown()
        # Session am Ende schließen
        self.end_session()