import traceback

import cv2
from PySide6.QtCore import QObject, QRunnable, QThreadPool, Signal
from PySide6.QtGui import QImage
from PySide6.QtWidgets import QMessageBox


# DetectionTaskSignals: class definition for ScanSlicer behavior.
class DetectionTaskSignals(QObject):
    status = Signal(str)
    finished = Signal(object, object, object)
    failed = Signal(str)


# DetectionTask: class definition for ScanSlicer behavior.
class DetectionTask(QRunnable):
    # __init__: function definition for ScanSlicer behavior.
    def __init__(self, autoslicer):
        super().__init__()
        self.autoslicer = autoslicer
        self.signals = DetectionTaskSignals()

    # run: function definition for ScanSlicer behavior.
    def run(self):
        try:
            boxes, filter_preview_image = self.autoslicer.autodetect_slices(
                self.signals.status.emit,
                preview_filter_output=True,
            )
            normal_preview_image = cv2.cvtColor(self.autoslicer.image, cv2.COLOR_BGR2RGB)
            self.signals.finished.emit(boxes, filter_preview_image, normal_preview_image)
        except Exception as exc:
            details = f"{exc}\n\n{traceback.format_exc()}"
            self.signals.failed.emit(details)


# AutotuneTaskSignals: class definition for ScanSlicer behavior.
class AutotuneTaskSignals(QObject):
    status = Signal(str)
    finished = Signal(object)
    failed = Signal(str)


# AutotuneTask: class definition for ScanSlicer behavior.
class AutotuneTask(QRunnable):
    # __init__: function definition for ScanSlicer behavior.
    def __init__(self, autoslicer, profile_name):
        super().__init__()
        self.autoslicer = autoslicer
        self.profile_name = profile_name
        self.signals = AutotuneTaskSignals()

    # run: function definition for ScanSlicer behavior.
    def run(self):
        try:
            result = self.autoslicer.autotune_for_current_image(
                self.signals.status.emit,
                profile_name=self.profile_name,
            )
            self.signals.finished.emit(result)
        except Exception as exc:
            details = f"{exc}\n\n{traceback.format_exc()}"
            self.signals.failed.emit(details)


# rgb_array_to_qimage: function definition for ScanSlicer behavior.
def rgb_array_to_qimage(image):
    h, w, c = image.shape
    bytes_per_line = c * w
    return QImage(image.data, w, h, bytes_per_line, QImage.Format_RGB888).copy()