from PySide6.QtWidgets import (
    QGraphicsRectItem, QGraphicsSimpleTextItem, QGraphicsItem
)
from PySide6.QtGui import QBrush, QColor, QFont, QFontMetricsF


class KeyItem(QGraphicsRectItem):
    def __init__(self, label):
        super().__init__()
        self.label = label
        self.text = QGraphicsSimpleTextItem(label, self)
        self.text.setFlag(QGraphicsItem.ItemIgnoresTransformations, True)

        self.setBrush(QBrush(QColor("lightgray")))

        self.scale_factor = 1.0
        self.width = 0
        self.height = 0

    def set_geometry(self, x, y, width, height):
        self.width = width
        self.height = height

        self.setRect(0, 0, width, height)
        self.setPos(x, y)
        self.setTransformOriginPoint(width / 2, height / 2)

        self.update_label_font()

    def update_label_font(self):
        # Dynamically size font
        font_size = min(self.width, self.height) * 0.4
        font = QFont()
        font.setPointSizeF(font_size)
        self.text.setFont(font)

        # Use font metrics for accurate bounding
        metrics = QFontMetricsF(font)
        text_rect = metrics.boundingRect(self.label)

        text_x = (self.width - text_rect.width()) / 2
        text_y = (self.height - text_rect.height()) / 2 # + metrics.ascent() - text_rect.height()

        self.text.setPos(text_x, text_y)

    def set_scale_factor(self, scale):
        self.scale_factor = scale
        self.setZValue(scale)
        self.setScale(scale)

    def mousePressEvent(self, q_mouse_event):
        print(self.label, "was clicked")