"""Dialogue Decalage du contenu."""

from PyQt6.QtWidgets import (QDialog, QVBoxLayout, QHBoxLayout, QLabel,
                              QGroupBox, QDoubleSpinBox, QCheckBox,
                              QDialogButtonBox)
from app.engine.pdf_utils import mm_to_pt


class TrimShiftDialog(QDialog):
    def __init__(self, total_pages=1, parent=None):
        super().__init__(parent)
        self.setWindowTitle("Decalage du contenu")
        self.setMinimumWidth(420)
        self._total_pages = total_pages
        self._setup_ui()

    def _setup_ui(self):
        layout = QVBoxLayout(self)

        # Decalage pages impaires
        grp_odd = QGroupBox("Decalage pages impaires (mm)")
        ol = QHBoxLayout(grp_odd)
        ol.addWidget(QLabel("X :"))
        self.spin_x = QDoubleSpinBox()
        self.spin_x.setRange(-200, 200)
        self.spin_x.setSuffix(" mm")
        ol.addWidget(self.spin_x)
        ol.addWidget(QLabel("Y :"))
        self.spin_y = QDoubleSpinBox()
        self.spin_y.setRange(-200, 200)
        self.spin_y.setSuffix(" mm")
        ol.addWidget(self.spin_y)
        layout.addWidget(grp_odd)

        # Pages paires differentes
        self.chk_different = QCheckBox("Decalage different pour pages paires")
        layout.addWidget(self.chk_different)

        grp_even = QGroupBox("Decalage pages paires (mm)")
        el = QHBoxLayout(grp_even)
        el.addWidget(QLabel("X :"))
        self.spin_x_even = QDoubleSpinBox()
        self.spin_x_even.setRange(-200, 200)
        self.spin_x_even.setSuffix(" mm")
        self.spin_x_even.setEnabled(False)
        el.addWidget(self.spin_x_even)
        el.addWidget(QLabel("Y :"))
        self.spin_y_even = QDoubleSpinBox()
        self.spin_y_even.setRange(-200, 200)
        self.spin_y_even.setSuffix(" mm")
        self.spin_y_even.setEnabled(False)
        el.addWidget(self.spin_y_even)
        layout.addWidget(grp_even)

        self.chk_different.toggled.connect(self.spin_x_even.setEnabled)
        self.chk_different.toggled.connect(self.spin_y_even.setEnabled)

        # Chasse (creep)
        grp_creep = QGroupBox("Compensation de chasse (livrets)")
        cl = QHBoxLayout(grp_creep)
        cl.addWidget(QLabel("Chasse max :"))
        self.spin_creep = QDoubleSpinBox()
        self.spin_creep.setRange(0, 20)
        self.spin_creep.setSuffix(" mm")
        self.spin_creep.setToolTip("Decalage progressif pour compenser l'epaisseur du papier")
        cl.addWidget(self.spin_creep)
        layout.addWidget(grp_creep)

        buttons = QDialogButtonBox(
            QDialogButtonBox.StandardButton.Ok | QDialogButtonBox.StandardButton.Cancel
        )
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)
        layout.addWidget(buttons)

    def get_settings(self):
        return {
            "shift_x": mm_to_pt(self.spin_x.value()),
            "shift_y": mm_to_pt(self.spin_y.value()),
            "shift_x_even": mm_to_pt(self.spin_x_even.value()) if self.chk_different.isChecked() else None,
            "shift_y_even": mm_to_pt(self.spin_y_even.value()) if self.chk_different.isChecked() else None,
            "creep": mm_to_pt(self.spin_creep.value()),
            "creep_pages": self._total_pages,
        }