"""
Bulk Email Marketing Tab

This module contains the BulkEmailMarketingTab class, which provides a placeholder
interface for bulk email marketing functionality (coming soon).
"""

import logging
from typing import Optional, Dict, Any

from PySide6.QtWidgets import (
    QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton, 
    QFrame, QTextBrowser
)
from PySide6.QtCore import Qt, Signal
from PySide6.QtGui import QFont, QPixmap, QIcon

from llmtoolkit.app.core.event_bus import EventBus
from llmtoolkit.app.ui.theme_manager import ThemeManager


class BulkEmailMarketingTab(QWidget):
    """
    Placeholder interface for bulk email marketing functionality (coming soon).
    """
    
    def __init__(self, event_bus: EventBus, theme_manager: ThemeManager = None, parent=None):
        """
        Initialize the bulk email marketing tab.
        
        Args:
            event_bus: Application event bus
            theme_manager: Theme manager for consistent styling
            parent: Parent widget
        """
        super().__init__(parent)
        
        self.logger = logging.getLogger("gguf_loader.ui.bulk_email_marketing_tab")
        self.event_bus = event_bus
        self.theme_manager = theme_manager
        
        # Initialize UI
        self._init_ui()
        
        # Subscribe to theme changes
        if self.theme_manager:
            self.theme_manager.theme_changed.connect(self._on_theme_changed)
        
        # Apply initial theme
        self._apply_theme()
        
        self.logger.info("BulkEmailMarketingTab initialized")
    
    def _init_ui(self):
        """Initialize UI components with coming soon message."""
        # Create main layout
        main_layout = QVBoxLayout(self)
        main_layout.setContentsMargins(20, 20, 20, 20)
        main_layout.setSpacing(15)
        
        # Create centered content
        content_frame = QFrame()
        content_frame.setObjectName("coming_soon_frame")
        content_layout = QVBoxLayout(content_frame)
        content_layout.setContentsMargins(30, 30, 30, 30)
        content_layout.setSpacing(20)
        content_layout.setAlignment(Qt.AlignCenter)
        
        # Add icon
        icon_label = QLabel()
        icon_label.setAlignment(Qt.AlignCenter)
        icon_label.setText("📧")
        icon_font = QFont()
        icon_font.setPointSize(48)
        icon_label.setFont(icon_font)
        content_layout.addWidget(icon_label)
        
        # Add title
        title_label = QLabel("Bulk Email Marketing")
        title_label.setAlignment(Qt.AlignCenter)
        title_font = QFont()
        title_font.setPointSize(24)
        title_font.setBold(True)
        title_label.setFont(title_font)
        content_layout.addWidget(title_label)
        
        # Add coming soon label
        coming_soon_label = QLabel("Coming Soon!")
        coming_soon_label.setAlignment(Qt.AlignCenter)
        coming_soon_font = QFont()
        coming_soon_font.setPointSize(18)
        coming_soon_font.setBold(True)
        coming_soon_label.setFont(coming_soon_font)
        coming_soon_label.setObjectName("coming_soon_label")
        content_layout.addWidget(coming_soon_label)
        
        # Add description
        description_browser = QTextBrowser()
        description_browser.setReadOnly(True)
        description_browser.setOpenExternalLinks(True)
        description_browser.setFrameStyle(QFrame.NoFrame)
        # Ensure proper styling in dark mode
        if self.theme_manager and self.theme_manager.is_dark_mode():
            description_browser.setStyleSheet("""
                QTextBrowser { 
                    background-color: #1e1e1e; 
                    color: #ffffff; 
                    border: none; 
                }
            """)
        description_browser.setHtml("""
        <div style="text-align: center; font-size: 14px; line-height: 1.6;">
            <p>Our bulk email marketing feature is currently under development.</p>
            <p>Soon you'll be able to:</p>
            <ul style="text-align: left; display: inline-block;">
                <li>Create and manage email campaigns</li>
                <li>Design beautiful email templates with AI assistance</li>
                <li>Segment your audience for targeted messaging</li>
                <li>Track open rates, click-through rates, and conversions</li>
                <li>Automate follow-up sequences</li>
                <li>Comply with email marketing regulations</li>
            </ul>
            <p>We're working hard to bring you these features soon!</p>
        </div>
        """)
        content_layout.addWidget(description_browser)
        
        # Add notify me button
        notify_button = QPushButton("Notify Me When Available")
        notify_button.setMinimumHeight(40)
        notify_button.setMinimumWidth(200)
        notify_button.clicked.connect(self._on_notify_clicked)
        content_layout.addWidget(notify_button, 0, Qt.AlignCenter)
        
        # Add to main layout
        main_layout.addWidget(content_frame, 1)
    
    def _on_notify_clicked(self):
        """Handle notify button click."""
        from PySide6.QtWidgets import QMessageBox
        
        QMessageBox.information(
            self,
            "Feature Notification",
            "Thank you for your interest!\n\n"
            "We'll notify you when the Bulk Email Marketing feature becomes available."
        )
    
    def _on_theme_changed(self):
        """Handle theme change event."""
        self._apply_theme()
    
    def _apply_theme(self):
        """Apply theme-based styling to all components."""
        if not self.theme_manager:
            return
        
        # Get theme colors
        is_dark = self.theme_manager.is_dark_mode()
        bg_color = self.theme_manager.get_color("background")
        text_color = self.theme_manager.get_color("text")
        accent_color = self.theme_manager.get_color("primary")
        border_color = self.theme_manager.get_color("border")
        
        # Apply theme to frame
        frame_style = f"""
            QFrame#coming_soon_frame {{
                background-color: {bg_color};
                border: 1px solid {border_color};
                border-radius: 10px;
            }}
        """
        
        # Apply theme to coming soon label
        coming_soon_style = f"""
            QLabel#coming_soon_label {{
                color: {accent_color};
            }}
        """
        
        # Apply styles
        for widget in self.findChildren(QFrame, "coming_soon_frame"):
            widget.setStyleSheet(frame_style)
        
        for widget in self.findChildren(QLabel, "coming_soon_label"):
            widget.setStyleSheet(coming_soon_style)