from PySide6 import QtWidgets
from PySide6.QtCore import QPersistentModelIndex, Qt, QTimer, QModelIndex, QAbstractTableModel, Signal, QEvent, QSize, QByteArray
from PySide6.QtWidgets import (
    QLineEdit,
    QTableView,
    QWidget,
    QVBoxLayout,
    QListWidget,
    QLabel,
    QHBoxLayout,
    QComboBox,
    QTabWidget,
    QHeaderView,
    QMessageBox,
    QTableWidget,
    QTextEdit,
    QStyledItemDelegate,
    QStatusBar
)

from PySide6.QtGui import QIcon, QCloseEvent, QImage, QPixmap, QContextMenuEvent, QGuiApplication, QColor, QBrush
from PySide6.QtSvg import QSvgRenderer
import darkdetect
import threading
import platform
import requests as r
import os
import subprocess
import libtorrent as lt
import time
import sys
import json
import base64
from core.utils.logging.logs import consoleLog, remove_download_log, flush_log_buffer
from core.utils.general.wrappers import run_thread
from core.utils.data.state import state
from core.utils.network.download import download_selected
from core.utils.network.update_checker import check_for_updates
from core.interface.utils.tabhelper import create_tab
from core.interface.utils.searchhelper import return_pressed
from core.interface.dialogs.settings import settings_dialog
from core.interface.assets.base64_icons import settings_black_base64
from core.interface.assets.base64_icons import settings_white_base64
from core.interface.assets.base64_icons import logo_base64
from core.utils.general.shutdown import closehelper


def _is_dark_mode():
    return darkdetect.isDark()


def _theme_colors():
    dark = _is_dark_mode()
    if dark:
        return {
            "text": "rgba(255, 255, 255, 0.9)",
            "border": "rgba(255, 255, 255, 0.06)",
            "selected": "rgba(255, 255, 255, 0.04)",
            "header_text": "rgba(255, 255, 255, 0.5)",
            "header_border": "rgba(255, 255, 255, 0.1)",
            "hover": QColor(255, 255, 255, 15),
        }
    else:
        return {
            "text": "rgba(0, 0, 0, 0.87)",
            "border": "rgba(0, 0, 0, 0.08)",
            "selected": "rgba(0, 0, 0, 0.06)",
            "header_text": "rgba(0, 0, 0, 0.6)",
            "header_border": "rgba(0, 0, 0, 0.12)",
            "hover": QColor(0, 0, 0, 15),
        }


def _table_stylesheet(view_type="QTableWidget"):
    c = _theme_colors()
    dark = _is_dark_mode()
    color_rule = "" if dark else f"color: {c['text']};"
    return f"""
        {view_type} {{
            border: none;
            outline: 0;
            font-size: 13px;
            {color_rule}
        }}
        {view_type}::item {{
            border-bottom: 1px solid {c["border"]};
            padding: 6px 14px;
            {color_rule}
        }}
        {view_type}::item:selected {{
            background: {c["selected"]};
        }}
        QHeaderView {{
            background: transparent;
        }}
        QHeaderView::section {{
            background: transparent;
            color: {c["header_text"]};
            font-weight: normal;
            border: none;
            border-bottom: 1px solid {c["header_border"]};
            padding: 6px 14px;
        }}
        QHeaderView::section:checked {{
            background: transparent;
            color: {c["header_text"]};
            font-weight: normal;
        }}
    """


def _svg_icon(svg_str, size=20):
    app = QtWidgets.QApplication.instance()
    if app:
        if _is_dark_mode():
            color = "white"
        else:
            color = "#555555"
    else:
        color = "white"
    svg = svg_str.replace("{color}", color)
    renderer = QSvgRenderer(QByteArray(svg.encode()))
    pixmap = QPixmap(size, size)
    pixmap.fill(Qt.GlobalColor.transparent)
    from PySide6.QtGui import QPainter
    painter = QPainter(pixmap)
    renderer.render(painter)
    painter.end()
    return QIcon(pixmap)


SVG_PLAY = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><polygon points="6,3 20,12 6,21" fill="{color}"/></svg>'
SVG_PAUSE = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><rect x="5" y="3" width="4" height="18" rx="1" fill="{color}"/><rect x="15" y="3" width="4" height="18" rx="1" fill="{color}"/></svg>'
SVG_FOLDER = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M2 6c0-1.1.9-2 2-2h5l2 2h7c1.1 0 2 .9 2 2v10c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6z" fill="{color}"/></svg>'


def download_update(latest_version):
    new_filename = f"SoftwareManager-dev-{latest_version.replace('-dev', '')}-windows-setup.exe"
    url = f"https://github.com/KeksPirates/SoftwareManager/releases/latest/download/SoftwareManager-dev-{latest_version.replace('-dev', '')}-windows-setup.exe"

    print("Downloading update...", True)
    response = r.get(url, allow_redirects=True)
    with open(new_filename, "wb") as f:
        f.write(response.content)
    if not os.path.exists(new_filename):
        raise FileNotFoundError("Executable not found")
    subprocess.run([new_filename, "/VERYSILENT", "/SUPPRESSMSGBOXES", "/NORESTART", "/SP-"])
    time.sleep(0.5)

    msg = QMessageBox()
    msg.setIcon(QMessageBox.Icon.Information)
    msg.setWindowTitle("New Version")
    msg.setText("New version installed.")
    msg.setInformativeText("Please remove the old exe.")
    msg.setStandardButtons(QMessageBox.StandardButton.Ok)

    sys.exit(0)


def windowCloseHelper():
    QGuiApplication.quit()
    
class MainWindow(QtWidgets.QMainWindow, QWidget):
    log_signal = Signal(str)  # Thread-safe signal for logging
    
    def __init__(self):
        super().__init__()
        MainWindow._instance = self
        self.log_signal.connect(self._on_log_signal)

        pixmap = QPixmap()
        image_data = base64.b64decode(logo_base64)
        pixmap.loadFromData(image_data)
        self.setWindowIcon(QIcon(pixmap))

        if platform.system() == "Windows":
            try:
                import ctypes
                appid = 'SoftwareManager'
                ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(appid)
            except Exception as e:
                consoleLog(f"Could not set app ID: {e}")

        build_info_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "build_info.json")
        if os.path.exists(build_info_path):
            with open(build_info_path, "r") as f:
                build_info = json.load(f)
                state.version = build_info.get("version")

        # Check for updates on Windows
        if state.ignore_updates is False and platform.system() == "Windows":
            result = check_for_updates()
            if result != (None, None):
                assets, latest_version = result

                if assets:
                    msg = QMessageBox()
                    msg.setIcon(QMessageBox.Icon.Information)
                    msg.setWindowTitle("Update Available")
                    msg.setText("A new version is available.")
                    msg.setInformativeText("Press Ok to download the update.")
                    msg.setStandardButtons(QMessageBox.StandardButton.Ok | QMessageBox.StandardButton.Ignore)

                    response = msg.exec_()
                    if response == QMessageBox.StandardButton.Ok:
                        download_update(latest_version)

        self.setWindowTitle("Software Manager")
        self.setGeometry(100, 100, 800, 600)

        self.controls = QWidget()
        self.controlsLayout = QVBoxLayout()

        # Widgets
        self.searchbar = QLineEdit()
        self.searchbar.setPlaceholderText("Search for software...")
        self.searchbar.setClearButtonEnabled(True)
        self.searchbar.setMinimumHeight(30)
        self.searchbar.returnPressed.connect(lambda: run_thread(threading.Thread(target=return_pressed, args=(self,)))) # Triggers data function thread on enter

        self.dlbutton = QtWidgets.QPushButton("Download")
        self.dlbutton.setCursor(Qt.CursorShape.PointingHandCursor)
        self.libraryList = QListWidget()

        self.emptyResults = QLabel("No Results")
        self.emptyResults.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.emptyResults.hide()

        self.download_model = None
        self.downloadList = QTableView()
        self.downloadList.setMouseTracking(True)
        self._hovered_row = -1
        self._tracker_hovered_row = -1
        self._tracker_hovered_table = None
        self.downloadList.viewport().installEventFilter(self)
        self.emptyLibrary = QLabel("No items in library.")
        self.emptyDownload = QLabel("No items in downloads.")
        self.emptyDownload.setAlignment(Qt.AlignmentFlag.AlignCenter)

        self.consoleLog = QTextEdit()
        self.statusbar = QStatusBar()

        flush_log_buffer()

        class TrackerHoverDelegate(QStyledItemDelegate):
            def paint(self, painter, option, index):
                if index.row() == MainWindow._instance._tracker_hovered_row:
                    painter.save()
                    painter.fillRect(option.rect, _theme_colors()["hover"])
                    painter.restore()
                super().paint(painter, option, index)

        self._tracker_hover_delegate = TrackerHoverDelegate(self)

        def create_tracker_table(headers):
            table = QTableWidget()
            table.setColumnCount(len(headers))
            table.setEditTriggers(QtWidgets.QAbstractItemView.EditTrigger.NoEditTriggers)
            table.verticalHeader().setVisible(False)
            table.setHorizontalHeaderLabels(headers)
            table.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectionBehavior.SelectRows)
            table.setSelectionMode(QtWidgets.QAbstractItemView.SelectionMode.ExtendedSelection)

            header = table.horizontalHeader()
            header.setSectionResizeMode(0, QHeaderView.ResizeMode.Stretch) 
            header.setSectionResizeMode(1, QHeaderView.ResizeMode.Fixed)   
            header.resizeSection(1, 500)
            header.setStretchLastSection(False)
            header.setDefaultAlignment(Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter)
            header.setHighlightSections(False)

            table.setShowGrid(False)
            table.setStyleSheet(_table_stylesheet("QTableWidget"))

            table.setMouseTracking(True)
            table.viewport().setMouseTracking(True)
            table.setItemDelegate(self._tracker_hover_delegate)

            return table
            

        self.rutrackerlist = create_tracker_table(["Post Title", "Author", "Seeders", "Leechers"])
        self.uztrackerlist = create_tracker_table(["Post Title", "Author"])
        self.monkruslist = create_tracker_table(["Post Title", "Author"])

        state.tracker_list.update({"rutracker": self.rutrackerlist, "uztracker": self.uztrackerlist, "m0nkrus": self.monkruslist})

        self.rutrackerlist.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
        self.rutrackerlist.viewport().setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)

        self.uztrackerlist.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
        self.uztrackerlist.viewport().setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground) 

        self.monkruslist.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
        self.monkruslist.viewport().setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)

        for tbl in (self.rutrackerlist, self.uztrackerlist, self.monkruslist):
            tbl.viewport().installEventFilter(self)

        container = QWidget()
        containerLayout = QVBoxLayout()
        containerLayout.addWidget(self.searchbar)
        containerLayout.addWidget(state.tracker_list[state.tracker])

        class DownloadModel(QAbstractTableModel):
            def __init__(self):
                super().__init__()
                self.headers = ["Action", "Name", "Status", "Progress", "Speed", "Size", "Total Size"]

            def rowCount(self, parent: QModelIndex | QPersistentModelIndex = QModelIndex()) -> int:
                return len(state.active_downloads)
            
            def columnCount(self, parent: QModelIndex | QPersistentModelIndex = QModelIndex()):
                return len(self.headers)

            def headerData(self, section, orientation, role: int = Qt.ItemDataRole.DisplayRole): 
                if role == Qt.ItemDataRole.DisplayRole and orientation == Qt.Orientation.Horizontal: 
                    return self.headers[section]
                return None

            def data(self, index: QModelIndex | QPersistentModelIndex, role: int = Qt.ItemDataRole.DisplayRole): 
                if role == Qt.ItemDataRole.DisplayRole: 
                    col = index.column()

                    if index.row() >= len(state.active_downloads) or index.row() < 0:
                        return None
                    
                    magnet_link = list(state.active_downloads.keys())[index.row()] 
                    magnetdl = state.active_downloads[magnet_link]
                    
                    status = magnetdl.status()
                    
                    if col == 0:
                        pass
                    elif col == 1:
                        return status.name if status.has_metadata else "Fetching metadata..."
                    elif col == 2:
                        if status.state == lt.torrent_status.downloading:
                            return "Downloading"
                        elif status.state == lt.torrent_status.seeding:
                            return "Seeding"
                        elif status.paused:
                            is_auto = bool(magnetdl.flags() & lt.torrent_flags.auto_managed)
                            return "Queued" if is_auto else "Paused"
                        else:
                            return "Queued"
                    elif col == 3:
                        return f"{status.progress * 100:.1f}%"
                    elif col == 4:
                        down_kb = status.download_rate / 1024
                        up_kb = status.upload_rate / 1024
                        down_text = f"{down_kb / 1024:.1f} MB/s" if down_kb > 1024 else f"{down_kb:.1f} kB/s"
                        up_text = f"{up_kb / 1024:.1f} MB/s" if up_kb > 1024 else f"{up_kb:.1f} kB/s"
                        return f"↓ {down_text} ↑ {up_text}"
                    elif col == 5:
                        downloaded_mb = status.total_wanted_done / (1024 * 1024)
                        if downloaded_mb > 1024:
                            return f"{downloaded_mb / 1024:.2f} GB"
                        else:
                            return f"{downloaded_mb:.1f} MB"
                    elif col == 6:
                        total_mb = status.total_wanted / (1024 * 1024)
                        if total_mb > 1024:
                            return f"{total_mb / 1024:.2f} GB"
                        else:
                            return f"{total_mb:.1f} MB"
                    elif col == 7:
                        if status.download_rate > 0:
                            bytes_left = status.total_wanted - status.total_wanted_done
                            eta_seconds = bytes_left / status.download_rate
                            
                            if eta_seconds < 60:
                                return f"{int(eta_seconds)}s"
                            elif eta_seconds < 3600:
                                minutes = int(eta_seconds / 60)
                                seconds = int(eta_seconds % 60)
                                return f"{minutes}m {seconds}s"
                            else:
                                hours = int(eta_seconds / 3600)
                                minutes = int((eta_seconds % 3600) / 60)
                                return f"{hours}h {minutes}m"
                        else:
                            return "∞" if status.paused else "Stalled"
                
                if role == Qt.ItemDataRole.UserRole and index.column() == 0: 
                    magnet_link = list(state.active_downloads.keys())[index.row()] 
                    magnetdl = state.active_downloads[magnet_link]
                    return magnetdl.status().paused
                
                return None

            def toggle_pause_resume(self, row):

                if row >= len(state.active_downloads) or row < 0:
                    return
                    
                magnet_link = list(state.active_downloads.keys())[row] 
                magnetdl = state.active_downloads[magnet_link]
                status = magnetdl.status()
                
                if status.state == lt.torrent_status.seeding: 
                    save_path = magnetdl.save_path()
                    if save_path and os.path.exists(save_path):
                        if platform.system() == "Windows":
                            os.startfile(os.path.normpath(save_path))
                        elif platform.system() == "Linux":
                            subprocess.Popen(["xdg-open", save_path])
                        elif platform.system() == "Darwin":
                            subprocess.Popen(["open", save_path])
                    return
                
                is_paused = bool(magnetdl.flags() & lt.torrent_flags.paused)
                if is_paused:
                    magnetdl.set_flags(lt.torrent_flags.auto_managed)
                    magnetdl.resume()
                    consoleLog(f"Resumed download: {status.name}", True)
                else:
                    magnetdl.unset_flags(lt.torrent_flags.auto_managed)
                    magnetdl.pause()
                    consoleLog(f"Paused download: {status.name}", True)
                
                idx = self.index(row, 0)
                self.dataChanged.emit(idx, idx, [Qt.ItemDataRole.DisplayRole, Qt.ItemDataRole.UserRole])

        class HoverRowDelegate(QStyledItemDelegate):
            def paint(self, painter, option, index):
                if index.row() == MainWindow._instance._hovered_row:
                    painter.save()
                    painter.fillRect(option.rect, _theme_colors()["hover"])
                    painter.restore()
                super().paint(painter, option, index)

        class PauseResumeDelegate(QStyledItemDelegate):
            clicked = Signal(int)

            def paint(self, painter, option, index):
                if index.row() == MainWindow._instance._hovered_row:
                    painter.save()
                    painter.fillRect(option.rect, _theme_colors()["hover"])
                    painter.restore()
                super().paint(painter, option, index)

            def setEditorData(self, editor, index):
                button = editor.findChild(QtWidgets.QPushButton)
                
                magnet_link = list(state.active_downloads.keys())[index.row()] 
                magnetdl = state.active_downloads[magnet_link]
                status = magnetdl.status()

                if button:
                    if status.state == lt.torrent_status.seeding: 
                        button.setIcon(_svg_icon(SVG_FOLDER, 18))
                        button.setText("")
                    else:
                        is_user_paused = status.paused and not bool(magnetdl.flags() & lt.torrent_flags.auto_managed)
                        button.setIcon(_svg_icon(SVG_PLAY if is_user_paused else SVG_PAUSE, 18))
                        button.setText("")

            def createEditor(self, parent, option, index):
                magnet_link = list(state.active_downloads.keys())[index.row()] 
                magnetdl = state.active_downloads[magnet_link]
                status = magnetdl.status()

                widget = QWidget(parent)
                widget.setStyleSheet("border: none; background: transparent;")
                layout = QHBoxLayout(widget)
                layout.setContentsMargins(0, 0, 0, 0)
                if status.state == lt.torrent_status.seeding: 
                    btnPause = QtWidgets.QPushButton()
                    btnPause.setIcon(_svg_icon(SVG_FOLDER, 18))
                else:
                    btnPause = QtWidgets.QPushButton()
                    is_user_paused = status.paused and not bool(magnetdl.flags() & lt.torrent_flags.auto_managed)
                    btnPause.setIcon(_svg_icon(SVG_PLAY if is_user_paused else SVG_PAUSE, 18))
                btnPause.setIconSize(QSize(18, 18))
                btnPause.setFixedSize(30, 30)
                btnPause.setCursor(Qt.CursorShape.PointingHandCursor)
                btnPause.setStyleSheet("""
                    QPushButton {
                        border: none;
                        background: transparent;
                        padding: 0px;
                    }
                """)
                btnPause.clicked.connect(lambda: self.clicked.emit(index.row()))
                layout.addStretch()
                layout.addWidget(btnPause)
                layout.addStretch()
                widget.setLayout(layout)
                return widget
            def editorEvent(self, event, model, option, index):
                return False

        self.download_model = DownloadModel()
        self.downloadList.setModel(self.download_model)
        self.downloadList.horizontalHeader().setStretchLastSection(False)
        self.downloadList.horizontalHeader().setSectionResizeMode(0, QHeaderView.ResizeMode.Fixed)
        self.downloadList.horizontalHeader().resizeSection(0, 70)
        self.downloadList.horizontalHeader().setSectionResizeMode(1, QHeaderView.ResizeMode.Stretch)
        self.downloadList.horizontalHeader().setSectionResizeMode(2, QHeaderView.ResizeMode.ResizeToContents)
        self.downloadList.horizontalHeader().setSectionResizeMode(3, QHeaderView.ResizeMode.ResizeToContents)
        self.downloadList.horizontalHeader().setSectionResizeMode(4, QHeaderView.ResizeMode.ResizeToContents)
        self.downloadList.horizontalHeader().setSectionResizeMode(5, QHeaderView.ResizeMode.ResizeToContents)
        self.downloadList.horizontalHeader().setSectionResizeMode(6, QHeaderView.ResizeMode.ResizeToContents)
        self.downloadList.horizontalHeader().setMinimumSectionSize(60)
        self.downloadList.verticalHeader().setDefaultSectionSize(40)
        self.downloadList.setSelectionBehavior(QTableView.SelectionBehavior.SelectRows)
        self.downloadList.setSelectionMode(QtWidgets.QAbstractItemView.SelectionMode.ExtendedSelection)
        self.downloadList.verticalHeader().setVisible(False)
        self.downloadList.horizontalHeader().setDefaultAlignment(Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter)
        self.downloadList.horizontalHeader().setHighlightSections(False)
        self.downloadList.setMouseTracking(True)
        self.downloadList.setShowGrid(False)
        self.downloadList.setStyleSheet(_table_stylesheet("QTableView"))
        self.downloadList.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
        self.downloadList.viewport().setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)

        download_model = self.download_model

        def on_pause_resume_clicked(row):
            download_model.toggle_pause_resume(row)

        self.downloadList.viewport().setMouseTracking(True)
        hover_delegate = HoverRowDelegate(self.downloadList)
        self.downloadList.setItemDelegate(hover_delegate)

        delegate = PauseResumeDelegate(self.downloadList)
        self.downloadList.setItemDelegateForColumn(0, delegate)
        delegate.clicked.connect(on_pause_resume_clicked)

        # download button triggers
        self.dlbutton.clicked.connect(lambda: run_thread(threading.Thread(target=download_selected, args=(state.tracker_list[state.tracker].selectedItems(), state.posts, state.post_titles))))

        container.setLayout(containerLayout)
        self.setCentralWidget(container)

        # Tabs
        self.tabs = QTabWidget()
        self.tabs.setStyleSheet("""
            QTabBar::tab {
                font-size: 11px;
                padding: 2px 8px;
                height: 25px;
            }
            QTabWidget::pane {
                margin-top: -20px;
            }
        """)

        self.horizontal_layout = QHBoxLayout()
        self.horizontal_layout.addWidget(self.emptyResults, stretch=3)
        self.tracker_widget = state.tracker_list[state.tracker]
        self.horizontal_layout.addWidget(self.tracker_widget)

        self.tab1 = create_tab("Search", self.searchbar, state.tracker_list[state.tracker], self.tabs, self.dlbutton, self.horizontal_layout)
        # self.tab2 = create_tab("Library", self.emptyLibrary, self.libraryList, self.tabs, None, None)
        self.tab3 = create_tab("Downloads", self.emptyDownload, self.downloadList, self.tabs, None, None)

        if state.image_path is not None and os.path.exists(state.image_path):
            self.image = QImage(state.image_path)
            self.image = self.image.scaledToWidth(300, Qt.TransformationMode.SmoothTransformation)
            self.pixmap = QPixmap.fromImage(self.image)
            self.overlay_label = QLabel(self)
            self.overlay_label.setPixmap(self.pixmap)
            self.overlay_label.adjustSize()
            self.overlay_label.raise_()

            # offset_x = -1350
            # offset_y = -550
            x = self.width() - self.overlay_label.width() # - offset_x
            y = self.height() - self.overlay_label.height() # - offset_y
            self.overlay_label.move(x, y)
        
        # temporarily disabled
        # state.image_changed.connect(self.update_image_overlay)

        
        self.corner_widget = QWidget()
        self.corner_layout = QHBoxLayout(self.corner_widget)
        self.corner_layout.setContentsMargins(0, 0, 0, 0)


        self.tracker_list = QComboBox()
        self.tracker_list.addItems(["rutracker", "uztracker", "m0nkrus"])
        self.tracker_list.setCursor(Qt.CursorShape.PointingHandCursor)
        self.tracker_list.activated.connect(self.set_tracker)
        self.corner_layout.addWidget(self.tracker_list)

        self.settings_btn = QtWidgets.QToolButton()
        self.settings_btn.setIconSize(QSize(21, 21))
        self.settings_btn.setStyleSheet("background: transparent;")

        if darkdetect.isDark():
            settings_white_pixmap = QPixmap()
            settings_white = base64.b64decode(settings_white_base64)
            settings_white_pixmap.loadFromData(settings_white)
            self.settings_btn.setIcon(QIcon(settings_white_pixmap))
        else:
            settings_black_pixmap = QPixmap()
            settings_black = base64.b64decode(settings_black_base64)
            settings_black_pixmap.loadFromData(settings_black)
            self.settings_btn.setIcon(QIcon(settings_black_pixmap))

        self.settings_btn.setToolTip("Settings")
        self.settings_btn.setCursor(Qt.CursorShape.PointingHandCursor)
        self.settings_btn.clicked.connect(lambda: settings_dialog(self))
        
        self.corner_layout.addWidget(self.settings_btn)

        self.tab_wrapper = QWidget()
        self.tab_layout = QVBoxLayout()
        self.tab_layout.setContentsMargins(0, 0, 0, 0)
        self.tab_layout.setSpacing(0)
        

        self.tab_bar_layout = QHBoxLayout()
        self.tab_bar_layout.setContentsMargins(0, 0, 0, 0)
        self.tab_bar_layout.setSpacing(0)

        self.tab_bar_layout.addWidget(self.tabs.tabBar(), stretch=0)
        self.tab_bar_layout.addStretch()
        self.tab_bar_layout.addWidget(self.corner_widget, stretch=0)

        self.tab_layout.addLayout(self.tab_bar_layout)
        self.tab_layout.addWidget(self.tabs)
        

        self.tab_wrapper.setLayout(self.tab_layout)
        

        containerLayout.addWidget(self.tab_wrapper)
        containerLayout.setAlignment(Qt.AlignmentFlag.AlignTop)

        self.consoleLog.setReadOnly(True)
        self.consoleLog.setFixedHeight(150)
        self.consoleLog.setStyleSheet("margin-bottom: 0px; background: transparent;")
        containerLayout.addWidget(self.consoleLog)

        self.statusbar.show()
        self.statusbar.setStyleSheet("background: transparent; border: none; padding-right: 1px; padding-left: 6px; padding-bottom: 1px; margin-top: -8px")

        self.version = QLabel(f"Version: {state.version}")
        self.statusbar.addPermanentWidget(self.version, Qt.AlignmentFlag.AlignLeft)

        self.speed_label = QLabel("\u2193 0.0 kB/s  \u2191 0.0 kB/s")
        self.speed_label.setStyleSheet("padding-right: 6px;")
        self.statusbar.addPermanentWidget(self.speed_label)

        self.setStatusBar(self.statusbar)

        self.download_timer = QTimer()
        self.download_timer.timeout.connect(self.download_list_update)
        self.download_timer.start(500)

        self.active_timer = QTimer()
        self.active_timer.timeout.connect(self.show_empty_downloads)
        self.active_timer.start(500)

        self.context_menu = QtWidgets.QMenu(self)
        self.context_menu.addAction("Open Containing Folder", self.openFolderAction)
        self.context_menu.addAction("Copy Magnet URI", self.copyMagnetURIAction)
        self.context_menu.addAction("Cancel Download", self.cancelDownloadAction)
        self.context_menu.addAction("Delete File", self.deleteFileAction)

    @staticmethod
    def add_log(text):
        if MainWindow._instance:
            MainWindow._instance.log_signal.emit(text)
    
    def _on_log_signal(self, text):
        if hasattr(self, 'consoleLog'):
            self.consoleLog.append(text)
            self.consoleLog.verticalScrollBar().setValue(
                self.consoleLog.verticalScrollBar().maximum()
            )

    def update_image_overlay(self, new_image_path):
        self.image = QImage(new_image_path)
        self.pixmap = QPixmap.fromImage(self.image)

        self.overlay_label.setPixmap(self.pixmap)
        self.overlay_label.adjustSize()

    def download_list_update(self):
        if self.download_model:
            row_count = self.download_model.rowCount()
            if row_count > 0:
                top_left = self.download_model.index(0, 0)
                bottom_right = self.download_model.index(row_count - 1, self.download_model.columnCount() - 1)
                self.download_model.dataChanged.emit(top_left, bottom_right, [Qt.ItemDataRole.DisplayRole, Qt.ItemDataRole.UserRole])

            if not hasattr(self, '_last_dl_row_count'):
                self._last_dl_row_count = 0
            if row_count != self._last_dl_row_count:

                for row in range(row_count, self._last_dl_row_count):
                    idx = self.download_model.index(row, 0)
                    self.downloadList.closePersistentEditor(idx)
                self._last_dl_row_count = row_count
                self.download_model.layoutAboutToBeChanged.emit()
                self.download_model.layoutChanged.emit()
                for row in range(row_count):
                    idx = self.download_model.index(row, 0)
                    self.downloadList.closePersistentEditor(idx)
                    self.downloadList.openPersistentEditor(idx)
            else:

                delegate = self.downloadList.itemDelegateForColumn(0)
                for row in range(row_count):
                    idx = self.download_model.index(row, 0)
                    editor = self.downloadList.indexWidget(idx)
                    if editor and delegate:
                        delegate.setEditorData(editor, idx)
        self._update_speed_label()

    def _update_speed_label(self):
        total_down = 0
        total_up = 0
        for handle in state.active_downloads.values():
            try:
                s = handle.status()
                total_down += s.download_rate
                total_up += s.upload_rate
            except Exception:
                pass
        down_kb = total_down / 1024
        up_kb = total_up / 1024
        down_text = f"{down_kb / 1024:.1f} MB/s" if down_kb > 1024 else f"{down_kb:.1f} kB/s"
        up_text = f"{up_kb / 1024:.1f} MB/s" if up_kb > 1024 else f"{up_kb:.1f} kB/s"
        self.speed_label.setText(f"↓ {down_text}  ↑ {up_text}")
        

    def mousePressEvent(self, event):
        self.rutrackerlist.clearSelection()
        self.uztrackerlist.clearSelection()
        self.monkruslist.clearSelection()
        self.downloadList.clearSelection()
        super().mousePressEvent(event)

    def changeEvent(self, event):
        super().changeEvent(event)

    def closeEvent(self, event: QCloseEvent):
        closehelper()
        event.accept()
        from core.utils.general.shutdown import force_exit
        force_exit()

    def eventFilter(self, obj, event):
        try:
            for tbl in (self.rutrackerlist, self.uztrackerlist, self.monkruslist):
                if obj == tbl.viewport():
                    if event.type() == QEvent.Type.MouseMove:
                        pos = event.position().toPoint() if hasattr(event, 'position') else event.pos()
                        idx = tbl.indexAt(pos)
                        new_row = idx.row() if idx.isValid() else -1
                        if new_row != self._tracker_hovered_row or tbl is not self._tracker_hovered_table:
                            self._tracker_hovered_row = new_row
                            self._tracker_hovered_table = tbl
                            tbl.viewport().update()
                    elif event.type() == QEvent.Type.Leave:
                        self._tracker_hovered_row = -1
                        self._tracker_hovered_table = None
                        tbl.viewport().update()
                    break
            if obj == self.downloadList.viewport():
                if event.type() == QEvent.Type.MouseMove:
                    pos = event.position().toPoint() if hasattr(event, 'position') else event.pos()
                    idx = self.downloadList.indexAt(pos)
                    new_row = idx.row() if idx.isValid() else -1
                    if new_row != self._hovered_row:
                        old_row = self._hovered_row
                        self._hovered_row = new_row
                        self._invalidate_hover_row(old_row)
                        self._invalidate_hover_row(new_row)
                elif event.type() == QEvent.Type.Leave:
                    old_row = self._hovered_row
                    self._hovered_row = -1
                    self._invalidate_hover_row(old_row)
        except RuntimeError:
            pass
        return super().eventFilter(obj, event)

    def _invalidate_hover_row(self, row):
        if row >= 0 and self.download_model:
            self.downloadList.viewport().update()

    def set_tracker(self, _):
        old_tracker = state.tracker
        state.tracker = self.tracker_list.currentText()

        old_widget = state.tracker_list[old_tracker]
        self.horizontal_layout.removeWidget(old_widget)
        old_widget.setParent(None)

        tracker_widget = state.tracker_list[state.tracker]
        self.horizontal_layout.addWidget(tracker_widget)

    def show_empty_results(self, show: bool):
        if show:
            state.tracker_list[state.tracker].hide()
            self.emptyResults.show()
        else:
            state.tracker_list[state.tracker].show()
            self.emptyResults.hide()

    def show_empty_downloads(self):
        if len(state.active_downloads) > 0:
            self.emptyDownload.hide()
            self.downloadList.show()
        else:
            self.emptyDownload.show()
            self.downloadList.hide()

    # thank you claude
    def resizeEvent(self, event):
        super().resizeEvent(event)
        table_width = state.tracker_list[state.tracker].viewport().width()
        state.tracker_list[state.tracker].setColumnWidth(1, int(table_width * 0.3))

    def contextMenuEvent(self, event: QContextMenuEvent):
        if self.downloadList.underMouse():
            pos = self.downloadList.viewport().mapFromGlobal(event.globalPos())
            index = self.downloadList.indexAt(pos)
            
            if index.isValid():
                row = index.row()
                self._context_menu_row = row
                self.context_menu.exec(event.globalPos())
        else:
            super().contextMenuEvent(event)

    def openFolderAction(self):
        if not hasattr(self, '_context_menu_row'):
            return
        
        row = self._context_menu_row
        if row < 0 or row >= len(state.active_downloads):
            return
        
        magnet_link = list(state.active_downloads.keys())[row] 
        magnetdl = state.active_downloads[magnet_link]

        download_path = magnetdl.save_path()
        
        if download_path and os.path.exists(download_path):
            if platform.system() == "Windows":
                os.startfile(os.path.normpath(download_path))
            elif platform.system() == "Linux":
                subprocess.Popen(["xdg-open", download_path])
            elif platform.system() == "Darwin":
                subprocess.Popen(["open", download_path])

    def copyMagnetURIAction(self):
        if not hasattr(self, '_context_menu_row'):
            return
        
        row = self._context_menu_row
        if row < 0 or row >= len(state.active_downloads):
            return
        
        magnet_link = list(state.active_downloads.keys())[row] 
        
        clipboard = QtWidgets.QApplication.clipboard()
        clipboard.setText(magnet_link)

    def cancelDownloadAction(self):
        if not hasattr(self, '_context_menu_row'):
            return
        
        row = self._context_menu_row
        if row < 0 or row >= len(state.active_downloads):
            return
        
        magnet_link = list(state.active_downloads.keys())[row] 
        magnetdl = state.active_downloads[magnet_link]

        confirm = QMessageBox.question(self, "Cancel Download", f"Are you sure you want to cancel the download of '{magnetdl.status().name}'?", QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No)
        if confirm == QMessageBox.StandardButton.Yes:
            del state.active_downloads[magnet_link]
            remove_download_log(magnet_link)
            consoleLog(f"Cancelled download: {magnetdl.status().name}", True)

    def deleteFileAction(self):
        if not hasattr(self, '_context_menu_row'):
            return
        
        row = self._context_menu_row
        if row < 0 or row >= len(state.active_downloads):
            return
        
        magnet_link = list(state.active_downloads.keys())[row]
        magnetdl = state.active_downloads[magnet_link]
        status = magnetdl.status()
        save_path = status.save_path
        torrent_name = status.name
        download_path = os.path.join(save_path, torrent_name)
        
        confirm = QMessageBox.question(self, "Delete Files", f"Are you sure you want to delete the downloaded files of '{magnetdl.status().name}'? This action cannot be undone.", QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No)
        if confirm == QMessageBox.StandardButton.Yes:
            if download_path and os.path.exists(download_path):
                try:
                    if os.path.isfile(download_path):
                        remove_download_log(magnet_link)
                        os.remove(download_path)
                        del state.active_downloads[magnet_link]
                        consoleLog(f"Deleted files for: {magnetdl.status().name}", True)
                    else:
                        import shutil
                        del state.active_downloads[magnet_link]
                        remove_download_log(magnet_link)
                        shutil.rmtree(download_path)
                        consoleLog(f"Deleted files for: {magnetdl.status().name}", True)
                except Exception as e:
                    consoleLog(f"Error deleting files: {e}", True)