from __future__ import annotations

from pathlib import Path

from PySide6.QtWidgets import (
    QDialog,
    QDialogButtonBox,
    QCheckBox,
    QDoubleSpinBox,
    QFileDialog,
    QFormLayout,
    QHBoxLayout,
    QLineEdit,
    QPushButton,
    QWidget,
)

try:
    from .localization import localize_dialog_buttons
    from .models import BackgroundImage
except ImportError:
    from localization import localize_dialog_buttons
    from models import BackgroundImage


class BackgroundDialog(QDialog):
    def __init__(self, background: BackgroundImage, parent=None) -> None:  # noqa: ANN001
        super().__init__(parent)
        self.setWindowTitle("Подложка")
        self.setMinimumWidth(460)

        self.path = QLineEdit(background.path)
        self.path.setPlaceholderText("PNG или JPEG")
        browse = QPushButton("Выбрать")
        browse.clicked.connect(self._browse)
        path_row = QWidget()
        path_layout = QHBoxLayout(path_row)
        path_layout.setContentsMargins(0, 0, 0, 0)
        path_layout.addWidget(self.path, 1)
        path_layout.addWidget(browse)

        self.offset_x = self._spin(-100000.0, 100000.0, background.offset_x, "")
        self.offset_y = self._spin(-100000.0, 100000.0, background.offset_y, "")
        self.scale_x = self._spin(1.0, 10000.0, background.scale_x_percent, " %")
        self.scale_y = self._spin(1.0, 10000.0, background.scale_y_percent, " %")
        self.opacity = self._spin(0.0, 100.0, background.opacity_percent, " %")
        self.visible = QCheckBox("Показывать подложку")
        self.visible.setChecked(background.visible)
        reset_scale = QPushButton("100%")
        reset_scale.clicked.connect(self._reset_scale)
        scale_row = QWidget()
        scale_layout = QHBoxLayout(scale_row)
        scale_layout.setContentsMargins(0, 0, 0, 0)
        scale_layout.addWidget(self.scale_x, 1)
        scale_layout.addWidget(self.scale_y, 1)
        scale_layout.addWidget(reset_scale)

        form = QFormLayout(self)
        form.addRow("Изображение", path_row)
        form.addRow("Смещение центра X", self.offset_x)
        form.addRow("Смещение центра Y", self.offset_y)
        form.addRow("Масштаб X / Y", scale_row)
        form.addRow("Прозрачность", self.opacity)
        form.addRow("", self.visible)
        buttons = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        localize_dialog_buttons(buttons)
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)
        form.addRow(buttons)

    def background(self) -> BackgroundImage:
        return BackgroundImage(
            path=self.path.text().strip(),
            offset_x=self.offset_x.value(),
            offset_y=self.offset_y.value(),
            scale_x_percent=self.scale_x.value(),
            scale_y_percent=self.scale_y.value(),
            opacity_percent=self.opacity.value(),
            visible=self.visible.isChecked(),
        )

    def _reset_scale(self) -> None:
        self.scale_x.setValue(100.0)
        self.scale_y.setValue(100.0)

    def _browse(self) -> None:
        start = self.path.text().strip()
        start_path = Path(start).parent if start else Path.home()
        selected, _ = QFileDialog.getOpenFileName(
            self,
            "Выбрать подложку",
            str(start_path),
            "Изображения (*.png *.jpg *.jpeg);;Все файлы (*.*)",
        )
        if selected:
            self.path.setText(selected)

    @staticmethod
    def _spin(minimum: float, maximum: float, value: float, suffix: str) -> QDoubleSpinBox:
        spin = QDoubleSpinBox()
        spin.setRange(minimum, maximum)
        spin.setDecimals(2)
        spin.setSingleStep(1.0)
        spin.setValue(value)
        spin.setSuffix(suffix)
        return spin