"""
Base dialogs for YTSage application.
Contains basic utility dialogs like LogWindow and AboutDialog.
"""

from datetime import datetime

from PySide6.QtCore import Qt, QThread, QTimer, Signal
from PySide6.QtWidgets import (
    QDialog,
    QDialogButtonBox,
    QHBoxLayout,
    QLabel,
    QMessageBox,
    QPushButton,
    QSizePolicy,
    QTextEdit,
    QVBoxLayout,
    QWidget,
)

from src.core.ytsage_ffmpeg import get_ffmpeg_path
from src.core.ytsage_utils import _version_cache, check_ffmpeg, get_ffmpeg_version, get_ytdlp_version, refresh_version_cache
from src.core.ytsage_yt_dlp import check_ytdlp_installed, get_yt_dlp_path


class LogWindow(QDialog):
    def __init__(self, parent=None) -> None:
        super().__init__(parent)
        self.setWindowTitle("yt-dlp Log")
        self.setMinimumSize(700, 500)

        layout = QVBoxLayout(self)

        self.log_text = QTextEdit()
        self.log_text.setReadOnly(True)
        self.log_text.setStyleSheet(
            """
            QTextEdit {
                background-color: #2b2b2b;
                color: #ffffff;
                font-family: Consolas, monospace;
                font-size: 12px;
                border: 2px solid #3d3d3d;
                border-radius: 4px;
            }
        """
        )

        layout.addWidget(self.log_text)

    def append_log(self, message) -> None:
        self.log_text.append(message)
        # Auto-scroll to bottom
        scrollbar = self.log_text.verticalScrollBar()
        scrollbar.setValue(scrollbar.maximum())


class AboutDialog(QDialog):
    def __init__(self, parent=None) -> None:
        super().__init__(parent)
        self._parent = parent  # Store parent to access version etc.
        self.setWindowTitle("About YTSage")
        self.setMinimumSize(460, 420)  # Slightly increased to accommodate paths
        self.resize(460, 440)  # Slightly increased initial size
        self.setMaximumSize(500, 480)  # Reasonable maximum size

        # Set window flags to make dialog independent of parent movement
        self.setWindowFlags(Qt.WindowType.Dialog | Qt.WindowType.WindowCloseButtonHint)

        layout = QVBoxLayout(self)
        layout.setSpacing(15)  # Reduced spacing
        layout.setContentsMargins(20, 20, 20, 20)  # Reduced margins
        layout.setSizeConstraint(QVBoxLayout.SizeConstraint.SetMinAndMaxSize)

        # App Information Section
        app_info_widget = self._create_app_info_section()
        layout.addWidget(app_info_widget)

        # Separator - subtle and compact
        separator = QWidget()
        separator.setFixedHeight(1)
        separator.setStyleSheet("background-color: #2a2a2a; margin: 8px 20px;")
        layout.addWidget(separator)

        # System Information Section
        system_info_widget = self._create_system_info_section()
        layout.addWidget(system_info_widget)

        # Close Button - compact positioning
        layout.addSpacing(10)  # Reduced space before button
        button_layout = QHBoxLayout()
        button_box = QDialogButtonBox(QDialogButtonBox.StandardButton.Ok)
        button_box.accepted.connect(self.accept)

        # Center the button
        button_layout.addStretch()
        button_layout.addWidget(button_box)
        button_layout.addStretch()
        layout.addLayout(button_layout)

        # Apply overall styling - improved consistency
        self.setStyleSheet(
            """
            QDialog { 
                background-color: #15181b; 
                color: #ffffff; 
            }
            QLabel { 
                color: #cccccc; 
            }
            QPushButton {
                padding: 10px 30px;
                background-color: #c90000;
                border: none;
                border-radius: 6px;
                color: white;
                font-weight: bold;
                font-size: 12px;
                min-width: 80px;
            }
            QPushButton:hover { 
                background-color: #a50000; 
            }
            QPushButton:pressed { 
                background-color: #800000; 
            }
            QGroupBox {
                font-weight: bold;
                border: 1px solid #333333;
                border-radius: 8px;
                margin-top: 12px;
                padding-top: 12px;
                background-color: #15181b;
            }
            QGroupBox::title {
                subcontrol-origin: margin;
                left: 15px;
                padding: 0 10px 0 10px;
                color: #ffffff;
                font-size: 14px;
            }
        """
        )

    def _create_app_info_section(self) -> QWidget:
        """Create the application information section - compact version"""
        widget = QWidget()
        layout = QVBoxLayout(widget)
        layout.setSpacing(6)  # Reduced spacing

        # Title and Version - more compact
        title_label = QLabel(
            "<span style='color: #c90000; font-size: 28px; font-weight: 300; letter-spacing: 2px;'>YTSage</span>"
        )
        title_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        layout.addWidget(title_label)

        version_label = QLabel(
            f"<span style='color: #cccccc; font-size: 13px; font-weight: normal;'>Version {getattr(self._parent, 'version', '4.9.0b')}</span>"
        )
        version_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        layout.addWidget(version_label)

        # Description - more compact
        description_label = QLabel("Modern YouTube downloader with a clean PySide6 interface.")
        description_label.setWordWrap(True)
        description_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        description_label.setStyleSheet("color: #ffffff; font-size: 11px; margin: 6px 0;")
        layout.addWidget(description_label)

        # Author and Links - compact single line
        info_layout = QHBoxLayout()
        info_layout.setSpacing(15)

        author_label = QLabel(
            "By: <a href='https://github.com/oop7/' style='color: #c90000; text-decoration: none; font-size: 10px;'>oop7</a>"
        )
        author_label.setOpenExternalLinks(True)
        info_layout.addWidget(author_label)

        repo_label = QLabel(
            "GitHub: <a href='https://github.com/oop7/YTSage/' style='color: #c90000; text-decoration: none; font-size: 10px;'>YTSage</a>"
        )
        repo_label.setOpenExternalLinks(True)
        info_layout.addWidget(repo_label)

        # Center the info layout
        info_container = QHBoxLayout()
        info_container.addStretch()
        info_container.addLayout(info_layout)
        info_container.addStretch()

        layout.addLayout(info_container)

        return widget

    def _create_system_info_section(self) -> QWidget:
        """Create the system information section with compact design"""
        # Create main container with compact styling
        container = QWidget()
        container.setStyleSheet(
            """
            QWidget {
                border: 1px solid #333333;
                border-radius: 8px;
                background-color: #15181b;
                margin-top: 5px;
            }
        """
        )

        main_layout = QVBoxLayout(container)
        main_layout.setSpacing(8)  # Compact spacing
        main_layout.setContentsMargins(15, 10, 15, 10)

        # Create header with title and refresh button on same line
        header_layout = QHBoxLayout()
        header_layout.setContentsMargins(0, 0, 0, 5)

        # System Information title
        title_label = QLabel("System Information")
        title_label.setStyleSheet(
            """
            QLabel {
                color: #ffffff;
                font-size: 14px;
                font-weight: bold;
                padding: 0px;
                margin: 0px;
            }
        """
        )
        header_layout.addWidget(title_label)

        # Add stretch to push refresh button to the right
        header_layout.addStretch()

        # Create refresh button
        self.refresh_btn = QPushButton("🔄")
        self.refresh_btn.setFixedSize(16, 16)
        self.refresh_btn.setStyleSheet(
            """
            QPushButton {
                padding: 0px;
                background-color: transparent;
                border: none;
                color: #cccccc;
                font-size: 10px;
                font-weight: normal;
                margin: 0px;
            }
            QPushButton:hover {
                color: #ffffff;
                background-color: rgba(255, 255, 255, 0.1);
                border-radius: 8px;
            }
            QPushButton:pressed {
                color: #c90000;
                background-color: rgba(201, 0, 0, 0.1);
            }
        """
        )
        self.refresh_btn.clicked.connect(self.refresh_version_info)
        header_layout.addWidget(self.refresh_btn)

        main_layout.addLayout(header_layout)

        # Compact status grid layout
        self.status_container = QVBoxLayout()
        self.status_container.setSpacing(6)  # Tight spacing
        self.status_container.setContentsMargins(0, 0, 0, 0)

        main_layout.addLayout(self.status_container)

        # Show loading message initially
        self._show_loading_message()

        # Populate system information asynchronously
        QTimer.singleShot(100, self.update_system_info)

        return container

    def _show_loading_message(self) -> None:
        """Show a compact loading message while system information is being gathered."""
        loading_label = QLabel("🔄 Loading system information...")
        loading_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
        loading_label.setStyleSheet(
            """
            QLabel {
                color: #cccccc;
                font-size: 11px;
                font-style: italic;
                padding: 10px;
            }
        """
        )

        self.status_container.addWidget(loading_label)

    def _create_status_item(self, icon, name, status_text, version_text, path_text=None, cache_status="") -> QWidget:
        """Create a compact status item widget"""
        item_widget = QWidget()
        # Adjust height based on whether we have path info
        item_height = 50 if path_text else 35
        item_widget.setMaximumHeight(item_height)
        item_widget.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Fixed)

        # Main layout
        item_layout = QVBoxLayout(item_widget)
        item_layout.setContentsMargins(8, 4, 8, 4)
        item_layout.setSpacing(2)

        # First row: Icon, name, status, version
        first_row = QHBoxLayout()
        first_row.setSpacing(8)

        # Icon and name - compact
        name_label = QLabel(f"{icon} <b>{name}</b>")
        name_label.setStyleSheet("font-size: 12px; color: #ffffff; font-weight: bold;")
        name_label.setMinimumWidth(80)
        first_row.addWidget(name_label)

        # Status - compact
        status_label = QLabel(status_text)
        status_label.setStyleSheet("font-size: 11px; font-weight: bold;")
        status_label.setMinimumWidth(70)
        first_row.addWidget(status_label)

        # Version info - improved readability
        version_info = version_text
        if cache_status:
            version_info += cache_status

        version_label = QLabel(version_info)
        version_label.setStyleSheet("font-size: 11px; color: #cccccc;")  # Increased from 10px
        version_label.setWordWrap(False)
        first_row.addWidget(version_label)

        # Add stretch to push everything left
        first_row.addStretch()

        item_layout.addLayout(first_row)

        # Second row: Path (if provided)
        if path_text:
            path_label = QLabel(f"📁 {path_text}")
            path_label.setStyleSheet("font-size: 10px; color: #aaaaaa; margin-left: 12px;")  # Increased from 9px, better color
            path_label.setWordWrap(False)
            # Truncate very long paths
            if len(str(path_text)) > 60:
                truncated_path = "..." + str(path_text)[-57:]
                path_label.setText(f"📁 {truncated_path}")
            item_layout.addWidget(path_label)

        # Subtle background with minimal border
        item_widget.setStyleSheet(
            """
            QWidget {
                background-color: rgba(45, 45, 45, 0.3);
                border: 1px solid #2a2a2a;
                border-radius: 4px;
                margin: 1px;
            }
            QWidget:hover {
                background-color: rgba(60, 60, 60, 0.4);
            }
        """
        )

        return item_widget

    def update_system_info(self) -> None:
        """Update the system information display with compact layout."""
        # Clear existing items
        for i in reversed(range(self.status_container.count())):
            child = self.status_container.itemAt(i).widget()
            if child:
                child.deleteLater()

        # yt-dlp Status - compact version with path
        ytdlp_found = check_ytdlp_installed()
        ytdlp_status_text = (
            "<span style='color: #4CAF50;'>✓ Detected</span>" if ytdlp_found else "<span style='color: #F44336;'>✗ Missing</span>"
        )
        ytdlp_version = get_ytdlp_version()

        # Get yt-dlp path
        ytdlp_path = get_yt_dlp_path() if ytdlp_found else None
        ytdlp_path_text = ytdlp_path if ytdlp_path and ytdlp_path != "yt-dlp" else None

        # Simplified cache status
        ytdlp_cache = _version_cache.get("ytdlp", {})
        last_check = ytdlp_cache.get("last_check", 0)
        cache_status = ""
        if last_check > 0:
            cache_time = datetime.fromtimestamp(last_check).strftime("%H:%M")
            cache_status = f" <span style='color: #888; font-size: 10px;'>({cache_time})</span>"  # Increased from 9px

        ytdlp_item = self._create_status_item(
            "🎥",
            "yt-dlp",
            ytdlp_status_text,
            ytdlp_version + cache_status,
            ytdlp_path_text,
        )
        self.status_container.addWidget(ytdlp_item)

        # FFmpeg Status - compact version with path
        ffmpeg_found = check_ffmpeg()
        ffmpeg_status_text = (
            "<span style='color: #4CAF50;'>✓ Detected</span>"
            if ffmpeg_found
            else "<span style='color: #F44336;'>✗ Missing</span>"
        )
        ffmpeg_version = get_ffmpeg_version() if ffmpeg_found else "Not Available"

        # Get FFmpeg path
        ffmpeg_path_text = None
        if ffmpeg_found:
            ffmpeg_path = get_ffmpeg_path()
            ffmpeg_path_text = ffmpeg_path if ffmpeg_path else None

        # Simplified cache status for FFmpeg
        ffmpeg_cache = _version_cache.get("ffmpeg", {})
        last_check = ffmpeg_cache.get("last_check", 0)
        cache_status = ""
        if last_check > 0 and ffmpeg_found:
            cache_time = datetime.fromtimestamp(last_check).strftime("%H:%M")
            cache_status = f" <span style='color: #888; font-size: 10px;'>({cache_time})</span>"  # Increased from 9px

        ffmpeg_item = self._create_status_item(
            "🎬",
            "FFmpeg",
            ffmpeg_status_text,
            ffmpeg_version + cache_status,
            ffmpeg_path_text,
        )
        self.status_container.addWidget(ffmpeg_item)

    def refresh_version_info(self) -> None:
        """Refresh version information manually."""
        self.refresh_btn.setText("🔄 Refreshing...")
        self.refresh_btn.setEnabled(False)

        # Perform refresh in a separate thread to avoid blocking UI
        class RefreshThread(QThread):
            finished = Signal(bool)

            def run(self):
                success = refresh_version_cache(force=True)
                self.finished.emit(success)

        self.refresh_thread = RefreshThread()
        self.refresh_thread.finished.connect(self.on_refresh_finished)
        self.refresh_thread.start()

    def on_refresh_finished(self, success) -> None:
        """Handle refresh completion."""
        self.refresh_btn.setText("🔄 Refresh")
        self.refresh_btn.setEnabled(True)

        if success:
            self.update_system_info()
        else:
            # Show error message with proper styling
            msg_box = QMessageBox(self)
            msg_box.setIcon(QMessageBox.Icon.Warning)
            msg_box.setWindowTitle("Refresh Failed")
            msg_box.setText("Failed to refresh version information.")
            msg_box.setWindowIcon(self.windowIcon())
            msg_box.setStyleSheet(
                """
                QMessageBox {
                    background-color: #15181b;
                    color: #ffffff;
                }
                QMessageBox QLabel {
                    color: #ffffff;
                }
                QMessageBox QPushButton {
                    padding: 8px 15px;
                    background-color: #c90000;
                    border: none;
                    border-radius: 4px;
                    color: white;
                    font-weight: bold;
                    min-width: 80px;
                }
                QMessageBox QPushButton:hover {
                    background-color: #a50000;
                }
            """
            )
            msg_box.exec()