from PySide6.QtWidgets import (
    QApplication, QWidget, QVBoxLayout, QListWidget, QListWidgetItem,
    QLabel, QHBoxLayout
)
from PySide6.QtGui import QPixmap, QIcon
from PySide6.QtCore import Qt, QSize
import sys

def make_thumbnail(image_path: str, size: QSize) -> QPixmap:
    pixmap = QPixmap(image_path)

    if pixmap.isNull():
        pixmap = QPixmap("media/empty_guitar_h.jpg")  # pusta miniatura, gdy nie uda się wczytać

    # dopasuj tak, aby całkowicie wypełnić prostokąt (cover)
    scaled = pixmap.scaled(
        size,
        Qt.AspectRatioMode.KeepAspectRatioByExpanding,
        Qt.TransformationMode.SmoothTransformation
    )

    # wytnij nadmiar, żeby miało dokładnie żądany rozmiar
    x = (scaled.width() - size.width()) // 2
    y = (scaled.height() - size.height()) // 2
    cropped = scaled.copy(x, y, size.width(), size.height())

    return cropped


class ThumbnailItemWidget(QWidget):
    def __init__(self, image_path: str, text: str = "", parent=None):
        super().__init__(parent)

        layout = QHBoxLayout(self)
        layout.setContentsMargins(6, 6, 6, 6)
        layout.setAlignment(Qt.AlignmentFlag.AlignCenter)

        # miniatura
        pixmap = make_thumbnail(image_path, QSize(180, 160))
        self.icon_label = QLabel()
        self.icon_label.setPixmap(pixmap)

        # podpis
        self.text_label = QLabel(text)
        self.text_label.setStyleSheet("font-size: 12pt;")
        self.text_label.setAlignment(Qt.AlignmentFlag.AlignCenter)

        # ustawiamy pionowy layout dla ikony i tekstu
        vbox = QVBoxLayout()
        vbox.setContentsMargins(0, 0, 0, 0)
        vbox.setAlignment(Qt.AlignmentFlag.AlignCenter)
        vbox.addWidget(self.icon_label)
        vbox.addWidget(self.text_label)

        layout.addLayout(vbox)


class ThumbnailListWidget(QWidget):
    def __init__(self):
        super().__init__()
        layout = QVBoxLayout(self)
        layout.setContentsMargins(0, 0, 0, 0)

        self.list_widget = QListWidget()
        # self.list_widget.setIconSize(QSize(100, 100))
        self.list_widget.setSpacing(2)

        layout.addWidget(self.list_widget)

        self.list_widget.itemPressed.connect(self.on_item_pressed)

    def add_thumbnail(self, image_path: str, text: str):
        item = QListWidgetItem()
        item.setSizeHint(QSize(192, 192))  # rozmiar „wiersza”

        print(f"Adding thumbnail: {image_path} with text: {text}")
        widget = ThumbnailItemWidget(image_path, text)
        self.list_widget.addItem(item)
        self.list_widget.setItemWidget(item, widget)

    def on_item_pressed(self, item: QListWidgetItem):
        row = self.list_widget.row(item)
        print(f"Kliknięto miniaturę w wierszu: {row}")