import sys
import pysmu
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import pyqtSignal, QObject
from GUI import MainWindow
from DeviceController import DeviceController

class ControllerSignals(QObject):
    started = pyqtSignal(str)   # serial
    stopped = pyqtSignal(str)
    error   = pyqtSignal(str, str)  # serial, msg

signals = ControllerSignals()

def main():
    # 1) Geräte einsammeln (pysmu nur hier benutzen)
    sess = pysmu.Session()
    sess.add_all()

    controllers = {dev.serial: DeviceController(sess, dev) for dev in sess.devices}
    serials = list(controllers.keys())
    print("Gefundene Geräte:", serials)

    # Optional: Modi setzen
    for serial in serials:
        c = controllers[serial]
        c.set_mode("A", pysmu.Mode.SIMV)  # CH A z. B.
        c.set_mode("B", pysmu.Mode.HI_Z)  # CH B z. B.

    # 2) GUI erstellen
    app = QApplication(sys.argv)
    win = MainWindow()

    # Kleine Helfer, damit die ListItem-Buttons nur Controller.start/stop aufrufen
    def make_on_start(ctrl, widget):
        def _start(checked=False):
            try:
                ctrl.start()             # startet Worker-Threads, blockiert nicht
                widget.set_running(True)
            except Exception as e:
                print(f"Fehler beim Start {ctrl.dev.serial}: {e}")
        return _start

    def make_on_stop(ctrl, widget):
        def _stop(checked=False):
            try:
                ctrl.stop()
                widget.set_running(False)
            except Exception as e:
                print(f"Fehler beim Stop {ctrl.dev.serial}: {e}")
        return _stop

    # 3) Liste befüllen (auf der INSTANZ, nicht auf der Klasse!)
    for i, serial in enumerate(serials):
        ctrl = controllers[serial]
        placeholder = lambda checked=False: None
        widget = win.add_list_item(
            text=serial, 
            index=i,
            on_start = make_on_start(ctrl, placeholder),  # placeholder siehe unten
            on_stop = make_on_stop(ctrl, placeholder),
        )

        widget.btn_start.clicked.disconnect()
        widget.btn_stop.clicked.disconnect()
        widget.btn_start.clicked.connect(make_on_start(ctrl, widget))
        widget.btn_stop.clicked.connect(make_on_stop(ctrl, widget))
            
    # 4) Start
    win.show()
    sys.exit(app.exec_())

if __name__ == "__main__":
    main()


# # Beispiel: Gerät 1 starten, Gerät 2 später starten/stoppen

# c1 = controllers[serials[0]]
# c1.set_mode(0, MODE.HI_Z)  # CH A Hi-Z
# c1.set_mode(1, MODE.HI_Z)  # CH B Hi-Z
# c1.start()

# time.sleep(2.0)

# if len(serials) > 1:
#     c2 = controllers[serials[1]]
#     c2.set_mode(0, MODE.HI_Z)
#     c2.set_mode(1, MODE.HI_Z)
#     c2.start()
#     time.sleep(3.0)
#     c2.stop()  # nur Gerät 2 stoppen

# # sauber beenden (Strg+C-Handling etc. weglassen der Kürze halber)
# for c in controllers.values():
#     c.stop()
# for c in controllers.values():
#     c.shutdown()