"""This is the main module to be run. Contains the program itself.
"""

from PySide2.QtGui import QPainter, QBrush
from PySide2.QtWidgets import QApplication, QGraphicsScene, QGraphicsView, QGraphicsWidget, QGraphicsLinearLayout
from PySide2.QtCore import Qt
import sys

from graphic_components import board


class SudokuWindow(QGraphicsView):
    """The main window that shows the Sudoku Board and the Menu Board.
    """

    def __init__(self):
        super().__init__()

        # Set up the Scene to manage the GraphicItems
        self.scene = QGraphicsScene(0, 0, 500, 600, self)
        self.setScene(self.scene)
        self.setSceneRect(self.scene.sceneRect())

        # Add the Boards to the form with a vertical layout
        self.form = QGraphicsWidget()
        self.layout = QGraphicsLinearLayout(Qt.Vertical)
        self.gameboard = board.GameBoard(400, 400)
        self.menuboard = board.MenuBoard(400, 80)
        self.layout.addItem(self.gameboard)
        self.layout.addItem(self.menuboard)
        self.layout.setSpacing(50)
        self.layout.setContentsMargins(50, 50, 50, 0)
        self.form.setLayout(self.layout)
        self.scene.addItem(self.form)

        # Setting the view
        self.setBackgroundBrush(QBrush(Qt.black))
        self.setRenderHint(QPainter.Antialiasing)
        self.fitInView(self.scene.sceneRect(), Qt.KeepAspectRatio)
        self.show()

        # Cross-Board signal connections
        self.gameboard.gridDrawn.connect(lambda: self.menuboard.show_children(True))
        self.gameboard.newGameSelected.connect(self.menuboard.set_difficulty_text)
        self.gameboard.sudokuDone.connect(self.menuboard.finish_the_game)
        self.menuboard.diff_display.menuClicked.connect(self.gameboard.game_unfocus)
        self.menuboard.diff_display.notFocus.connect(lambda: self.gameboard.refocus_timer.start(10))
        self.menuboard.diff_display.difficultySelected.connect(self.gameboard.new_game)

    def resizeEvent(self, event):
        """Reimplemented from QGraphicsView. Resize and maintain the board aspect ratio.
        """
        self.fitInView(self.scene.sceneRect(), Qt.KeepAspectRatio)
        super().resizeEvent(event)


if __name__ == "__main__":
    app = 0
    app = QApplication(sys.argv)

    ex = SudokuWindow()
    sys.exit(app.exec_())