from PySide6.QtWidgets import (QWidget, QListWidget, QStyledItemDelegate, 
                              QApplication, QVBoxLayout, QMenu, QListWidgetItem,
                              QStyle)
from PySide6.QtCore import Qt, QSize, QRect, QPoint
from PySide6.QtGui import (QPainter, QPainterPath, QColor, QLinearGradient, 
                          QPen, QFont, QIcon)


class CardItemDelegate(QStyledItemDelegate):
    def __init__(self, parent=None):
        super().__init__(parent)

    def paint(self, painter: QPainter, option, index):
        painter.setRenderHint(QPainter.RenderHint.Antialiasing)
        painter.save()

        # 获取数据
        data = index.data(Qt.ItemDataRole.UserRole)

        # 绘制卡片背景
        rect = option.rect
        rect.adjust(8, 4, -8, -4)

        # 创建圆角路径
        path = QPainterPath()
        path.addRoundedRect(rect, 8, 8)

        # 绘制阴影
        shadow_color = QColor(0, 0, 0, 30)
        for i in range(5):
            shadow_rect = rect.adjusted(0, i, 0, i)
            shadow_path = QPainterPath()
            shadow_path.addRoundedRect(shadow_rect, 8, 8)
            painter.fillPath(shadow_path, shadow_color)

        # 绘制卡片背景
        gradient = QLinearGradient(rect.topLeft(), rect.bottomLeft())
        if data.activated:
            gradient.setColorAt(0, QColor(40, 70, 45))
            gradient.setColorAt(1, QColor(45, 80, 50))
            painter.fillPath(path, gradient)
            painter.setPen(QPen(QColor(60, 180, 90), 2))
        elif option.state & QStyle.State_Selected:
            gradient.setColorAt(0, QColor(45, 45, 55))
            gradient.setColorAt(1, QColor(55, 55, 65))
            painter.fillPath(path, gradient)
            painter.setPen(QPen(QColor(70, 130, 180), 2))
        else:
            painter.fillPath(path, QColor(35, 35, 40))
            painter.setPen(QPen(QColor(60, 60, 65)))

        painter.drawPath(path)

        # 设置字体
        name_font = QFont("Microsoft YaHei", 10)
        name_font.setBold(True)
        normal_font = QFont("Microsoft YaHei", 9)

        # 计算文本区域
        padding = 15
        name_rect = rect.adjusted(padding, padding, -padding, 0)
        name_rect.setHeight(25)

        date_rect = QRect(name_rect)
        date_rect.translate(0, name_rect.height())

        desc_rect = QRect(date_rect)
        desc_rect.translate(0, date_rect.height())
        desc_rect.setHeight(40)

        # 绘制文本
        painter.setFont(name_font)
        painter.setPen(Qt.GlobalColor.white)
        painter.drawText(name_rect, Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter, data.name)

        painter.setFont(normal_font)
        painter.setPen(QColor(180, 180, 180))
        painter.drawText(date_rect, Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter, data.date)

        painter.setPen(QColor(160, 160, 160))
        painter.drawText(desc_rect, Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignTop | Qt.TextFlag.TextWordWrap,
                        data.description)

        painter.restore()

    def sizeHint(self, option, index):
        return QSize(380, 130)