import gradio as gr
import datetime
from typing import Dict, List, Any, Union, Optional, Callable
import matplotlib.pyplot as plt
import numpy as np

from utils.logging import get_logger
from utils.error_handling import handle_ui_exceptions, ValidationError, safe_get
from utils.config import UI_COLORS, UI_SIZES

# Initialize logger
logger = get_logger(__name__)

@handle_ui_exceptions
def create_card(title: str, content: str, icon: str = None, color: str = "blue") -> gr.Group:
    """
    Create a card component with title and content
    
    Args:
        title: Card title
        content: Card content
        icon: Icon emoji
        color: Card color
        
    Returns:
        Gradio Group component
        
    Raises:
        ValidationError: If required parameters are missing or invalid
    """
    if not title:
        logger.warning("Creating card with empty title")
        title = "Untitled"
    
    logger.debug(f"Creating card: {title}")
    
    with gr.Group(elem_classes=["card", f"card-{color}"]) as card:
        with gr.Row():
            if icon:
                gr.Markdown(f"## {icon} {title}")
            else:
                gr.Markdown(f"## {title}")
        gr.Markdown(content)
    
    return card

@handle_ui_exceptions
def create_stat_card(title: str, value: Union[int, str], icon: str = None, color: str = "blue") -> gr.Group:
    """
    Create a statistics card component
    
    Args:
        title: Card title
        value: Statistic value
        icon: Icon emoji
        color: Card color
        
    Returns:
        Gradio Group component
        
    Raises:
        ValidationError: If required parameters are missing or invalid
    """
    if not title:
        logger.warning("Creating stat card with empty title")
        title = "Untitled"
    
    logger.debug(f"Creating stat card: {title} = {value}")
    
    with gr.Group(elem_classes=["stat-card", f"card-{color}"]) as card:
        with gr.Row():
            if icon:
                gr.Markdown(f"### {icon} {title}")
            else:
                gr.Markdown(f"### {title}")
        gr.Markdown(f"## {value}")
    
    return card

@handle_ui_exceptions
def create_progress_ring(value: float, max_value: float = 100, size: int = 100, 
                        color: str = "blue", label: str = None) -> gr.HTML:
    """
    Create a CSS-based circular progress indicator
    
    Args:
        value: Current value
        max_value: Maximum value
        size: Size of the ring in pixels
        color: Color of the progress ring
        label: Optional label to display in the center
        
    Returns:
        Gradio HTML component with the progress ring
        
    Raises:
        ValidationError: If parameters are invalid
    """
    # Validate inputs
    if not isinstance(value, (int, float)):
        logger.warning(f"Invalid value for progress ring: {value}, using 0")
        value = 0
        
    if not isinstance(max_value, (int, float)) or max_value <= 0:
        logger.warning(f"Invalid max_value for progress ring: {max_value}, using 100")
        max_value = 100
        
    if not isinstance(size, int) or size <= 0:
        logger.warning(f"Invalid size for progress ring: {size}, using 100")
        size = 100
    
    logger.debug(f"Creating progress ring: {value}/{max_value} ({color})")
    
    # Calculate percentage
    percentage = min(100, max(0, (value / max_value) * 100))
    
    # Define colors based on the color parameter
    ring_color = UI_COLORS.get(color, UI_COLORS["blue"])
    
    # Create the HTML/CSS for the progress ring
    html = f"""
    <div class="progress-ring-container" style="width: {size}px; height: {size}px;">
        <div class="progress-ring" style="width: {size}px; height: {size}px;">
            <div class="progress-ring-circle" 
                 style="width: {size}px; height: {size}px; 
                        background: conic-gradient({ring_color} {percentage}%, #e0e0e0 0);">                 
            </div>
            <div class="progress-ring-inner" style="width: {size-20}px; height: {size-20}px;">
                <div class="progress-ring-value">{int(percentage)}%</div>
                {f'<div class="progress-ring-label">{label}</div>' if label else ''}
            </div>
        </div>
    </div>
    <style>
        .progress-ring-container {{
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }}
        .progress-ring {{
            position: relative;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
        }}
        .progress-ring-circle {{
            border-radius: 50%;
            position: absolute;
            mask: radial-gradient(transparent 55%, black 56%);
            -webkit-mask: radial-gradient(transparent 55%, black 56%);
        }}
        .progress-ring-inner {{
            background: white;
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 2;
        }}
        .progress-ring-value {{
            font-size: {size/4}px;
            font-weight: bold;
            color: {ring_color};
        }}
        .progress-ring-label {{
            font-size: {size/8}px;
            color: #666;
            margin-top: 5px;
        }}
    </style>
    """
    
    return gr.HTML(html)

@handle_ui_exceptions
def create_activity_item(activity: Dict[str, Any]) -> gr.Group:
    """
    Create an activity feed item
    
    Args:
        activity: Activity data
        
    Returns:
        Gradio Group component
        
    Raises:
        ValidationError: If activity data is invalid
    """
    if not activity:
        logger.warning("Creating activity item with empty data")
        activity = {"type": "unknown", "timestamp": get_timestamp()}
    
    logger.debug(f"Creating activity item: {safe_get(activity, 'type', 'unknown')}")
    
    # Format timestamp
    try:
        timestamp = datetime.datetime.fromisoformat(safe_get(activity, "timestamp", ""))
        formatted_time = timestamp.strftime("%b %d, %H:%M")
    except (ValueError, TypeError) as e:
        logger.warning(f"Error formatting timestamp: {str(e)}")
        formatted_time = "Unknown time"
    
    # Get activity type icon
    activity_icons = {
        "task_created": "📝",
        "task_completed": "✅",
        "note_created": "📄",
        "note_updated": "📝",
        "goal_created": "🎯",
        "goal_completed": "🏆",
        "app_opened": "🚀"
    }
    
    icon = activity_icons.get(safe_get(activity, "type", ""), "🔔")
    
    # Get activity message
    activity_messages = {
        "task_created": "created task",
        "task_completed": "completed task",
        "note_created": "created note",
        "note_updated": "updated note",
        "goal_created": "set goal",
        "goal_completed": "achieved goal",
        "app_opened": "opened the app"
    }
    
    message = activity_messages.get(safe_get(activity, "type", ""), "performed action")
    title = safe_get(activity, "title", "")
    
    # Create the activity item
    with gr.Group(elem_classes=["activity-item"]) as item:
        with gr.Row():
            gr.Markdown(f"{icon} **{formatted_time}** - You {message}")
            if title:
                gr.Markdown(f"**{title}**")
    
    return item

def get_timestamp() -> str:
    """
    Get current timestamp in ISO format
    
    Returns:
        Current timestamp as ISO formatted string
    """
    return datetime.datetime.now().isoformat()

@handle_ui_exceptions
def create_deadline_item(task: Dict[str, Any]) -> gr.Group:
    """
    Create a deadline tracker item
    
    Args:
        task: Task data with deadline
        
    Returns:
        Gradio Group component
        
    Raises:
        ValidationError: If task data is invalid
    """
    if not task:
        logger.warning("Creating deadline item with empty task data")
        task = {"title": "Untitled Task"}
    
    logger.debug(f"Creating deadline item for task: {safe_get(task, 'title', 'Untitled')}")
    
    # Format deadline
    try:
        deadline = datetime.datetime.fromisoformat(safe_get(task, "deadline", ""))
        today = datetime.datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
        days_left = (deadline.date() - today.date()).days
        
        if days_left < 0:
            status = "overdue"
            status_text = "Overdue"
        elif days_left == 0:
            status = "today"
            status_text = "Today"
        elif days_left == 1:
            status = "tomorrow"
            status_text = "Tomorrow"
        elif days_left < 7:
            status = "soon"
            status_text = f"{days_left} days left"
        else:
            status = "future"
            status_text = f"{days_left} days left"
            
        formatted_date = deadline.strftime("%b %d")
    except (ValueError, TypeError) as e:
        logger.warning(f"Error formatting deadline: {str(e)}")
        status = "unknown"
        status_text = "No deadline"
        formatted_date = "Unknown"
        days_left = 0
    
    # Create the deadline item
    with gr.Group(elem_classes=["deadline-item", f"deadline-{status}"]) as item:
        with gr.Row():
            gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
        with gr.Row():
            gr.Markdown(f"📅 {formatted_date} - {status_text}")
    
    return item

@handle_ui_exceptions
def create_kanban_board(tasks: List[Dict[str, Any]], on_card_click: Callable = None) -> gr.Group:
    """
    Create a Kanban board view for tasks
    
    Args:
        tasks: List of tasks
        on_card_click: Callback function when a card is clicked
        
    Returns:
        Gradio Group component with the Kanban board
        
    Raises:
        ValidationError: If tasks data is invalid
    """
    if not isinstance(tasks, list):
        logger.warning(f"Invalid tasks data for Kanban board: {type(tasks)}, using empty list")
        tasks = []
    
    logger.debug(f"Creating Kanban board with {len(tasks)} tasks")
    
    # Group tasks by status
    todo_tasks = [task for task in tasks if safe_get(task, "status", "") == "todo"]
    in_progress_tasks = [task for task in tasks if safe_get(task, "status", "") == "in_progress"]
    done_tasks = [task for task in tasks if safe_get(task, "status", "") == "done"]
    
    logger.debug(f"Task distribution: {len(todo_tasks)} todo, {len(in_progress_tasks)} in progress, {len(done_tasks)} done")
    
    # Create the Kanban board
    with gr.Group(elem_classes=["kanban-board"]) as board:
        with gr.Row():
            # To Do column
            with gr.Column(elem_classes=["kanban-column", "kanban-todo"]):
                gr.Markdown("### 📋 To Do")
                for task in todo_tasks:
                    with gr.Group(elem_classes=["kanban-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                        if safe_get(task, "description", ""):
                            gr.Markdown(task["description"])
                        with gr.Row():
                            if safe_get(task, "priority", ""):
                                priority_labels = {"high": "🔴 High", "medium": "🟠 Medium", "low": "🟢 Low"}
                                gr.Markdown(priority_labels.get(task["priority"], task["priority"]))
                            if safe_get(task, "deadline", ""):
                                try:
                                    deadline = datetime.datetime.fromisoformat(task["deadline"])
                                    gr.Markdown(f"📅 {deadline.strftime('%b %d')}")
                                except (ValueError, TypeError) as e:
                                    logger.warning(f"Error formatting deadline: {str(e)}")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
            
            # In Progress column
            with gr.Column(elem_classes=["kanban-column", "kanban-in-progress"]):
                gr.Markdown("### 🔄 In Progress")
                for task in in_progress_tasks:
                    with gr.Group(elem_classes=["kanban-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                        if safe_get(task, "description", ""):
                            gr.Markdown(task["description"])
                        with gr.Row():
                            if safe_get(task, "priority", ""):
                                priority_labels = {"high": "🔴 High", "medium": "🟠 Medium", "low": "🟢 Low"}
                                gr.Markdown(priority_labels.get(task["priority"], task["priority"]))
                            if safe_get(task, "deadline", ""):
                                try:
                                    deadline = datetime.datetime.fromisoformat(task["deadline"])
                                    gr.Markdown(f"📅 {deadline.strftime('%b %d')}")
                                except (ValueError, TypeError) as e:
                                    logger.warning(f"Error formatting deadline: {str(e)}")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
            
            # Done column
            with gr.Column(elem_classes=["kanban-column", "kanban-done"]):
                gr.Markdown("### ✅ Done")
                for task in done_tasks:
                    with gr.Group(elem_classes=["kanban-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                        if safe_get(task, "description", ""):
                            gr.Markdown(task["description"])
                        with gr.Row():
                            if safe_get(task, "completed_at", ""):
                                try:
                                    completed_at = datetime.datetime.fromisoformat(task["completed_at"])
                                    gr.Markdown(f"✅ {completed_at.strftime('%b %d')}")
                                except (ValueError, TypeError) as e:
                                    logger.warning(f"Error formatting completion date: {str(e)}")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
    
    return board

@handle_ui_exceptions
def create_priority_matrix(tasks: List[Dict[str, Any]], on_card_click: Callable = None) -> gr.Group:
    """
    Create an Eisenhower Matrix (Priority Matrix) for tasks
    
    Args:
        tasks: List of tasks
        on_card_click: Callback function when a card is clicked
        
    Returns:
        Gradio Group component with the Priority Matrix
        
    Raises:
        ValidationError: If tasks data is invalid
    """
    if not isinstance(tasks, list):
        logger.warning(f"Invalid tasks data for Priority Matrix: {type(tasks)}, using empty list")
        tasks = []
    
    logger.debug(f"Creating Priority Matrix with {len(tasks)} tasks")
    
    # Group tasks by urgency and importance
    urgent_important = []
    urgent_not_important = []
    not_urgent_important = []
    not_urgent_not_important = []
    
    for task in tasks:
        if safe_get(task, "completed", False):
            continue
            
        urgency = safe_get(task, "urgency", "low")
        importance = safe_get(task, "importance", "low")
        
        if urgency in ["high", "urgent"] and importance in ["high", "important"]:
            urgent_important.append(task)
        elif urgency in ["high", "urgent"] and importance in ["low", "not important"]:
            urgent_not_important.append(task)
        elif urgency in ["low", "not urgent"] and importance in ["high", "important"]:
            not_urgent_important.append(task)
        else:
            not_urgent_not_important.append(task)
    
    # Create the Priority Matrix
    with gr.Group(elem_classes=["priority-matrix"]) as matrix:
        with gr.Row():
            # Urgent & Important
            with gr.Column(elem_classes=["matrix-quadrant", "urgent-important"]):
                gr.Markdown("### 🔴 Do First")
                gr.Markdown("Urgent & Important")
                for task in urgent_important:
                    with gr.Group(elem_classes=["matrix-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
            
            # Urgent & Not Important
            with gr.Column(elem_classes=["matrix-quadrant", "urgent-not-important"]):
                gr.Markdown("### 🟠 Delegate")
                gr.Markdown("Urgent & Not Important")
                for task in urgent_not_important:
                    with gr.Group(elem_classes=["matrix-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
        
        with gr.Row():
            # Not Urgent & Important
            with gr.Column(elem_classes=["matrix-quadrant", "not-urgent-important"]):
                gr.Markdown("### 🟡 Schedule")
                gr.Markdown("Not Urgent & Important")
                for task in not_urgent_important:
                    with gr.Group(elem_classes=["matrix-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
            
            # Not Urgent & Not Important
            with gr.Column(elem_classes=["matrix-quadrant", "not-urgent-not-important"]):
                gr.Markdown("### 🟢 Eliminate")
                gr.Markdown("Not Urgent & Not Important")
                for task in not_urgent_not_important:
                    with gr.Group(elem_classes=["matrix-card"]) as card:
                        gr.Markdown(f"**{safe_get(task, 'title', 'Untitled Task')}**")
                    
                    # Add click event if callback provided
                    if on_card_click:
                        card.click(lambda t=task: on_card_click(t), inputs=[], outputs=[])
    
    return matrix

@handle_ui_exceptions
def create_streak_counter(days: int) -> gr.Group:
    """
    Create a streak counter component
    
    Args:
        days: Number of consecutive days
        
    Returns:
        Gradio Group component with the streak counter
        
    Raises:
        ValidationError: If days is not a non-negative integer
    """
    if not isinstance(days, int) or days < 0:
        logger.warning(f"Invalid days value for streak counter: {days}, using 0")
        days = 0
    
    logger.debug(f"Creating streak counter: {days} days")
    
    with gr.Group(elem_classes=["streak-counter"]) as streak:
        gr.Markdown(f"### 🔥 {days} Day Streak")
        
        # Create a visual representation of the streak
        if days > 0:
            # Create a row of fire emojis
            emoji_count = min(days, 7)  # Limit to 7 emojis
            emoji_row = "🔥" * emoji_count
            gr.Markdown(emoji_row)
            
            # Add a motivational message based on streak length
            if days == 1:
                gr.Markdown("Great start! Keep it going tomorrow.")
            elif days < 3:
                gr.Markdown("You're building momentum!")
            elif days < 7:
                gr.Markdown("Impressive consistency!")
            elif days < 14:
                gr.Markdown("You're on fire this week!")
            elif days < 30:
                gr.Markdown("Amazing dedication!")
            else:
                gr.Markdown("Incredible commitment! You're unstoppable!")
        else:
            gr.Markdown("Start your streak today!")
    
    return streak

@handle_ui_exceptions
def create_weather_widget(weather_data: Dict[str, Any]) -> gr.Group:
    """
    Create a weather widget
    
    Args:
        weather_data: Weather information
        
    Returns:
        Gradio Group component with the weather widget
        
    Raises:
        ValidationError: If weather_data is invalid
    """
    if not isinstance(weather_data, dict):
        logger.warning(f"Invalid weather data: {type(weather_data)}, using empty dict")
        weather_data = {}
    
    logger.debug(f"Creating weather widget for location: {safe_get(weather_data, 'location', 'Unknown')}")
    
    # Weather condition icons
    weather_icons = {
        "Sunny": "☀️",
        "Clear": "☀️",
        "Partly Cloudy": "⛅",
        "Cloudy": "☁️",
        "Overcast": "☁️",
        "Rain": "🌧️",
        "Showers": "🌦️",
        "Thunderstorm": "⛈️",
        "Snow": "❄️",
        "Fog": "🌫️"
    }
    
    condition = safe_get(weather_data, "condition", "Unknown")
    icon = weather_icons.get(condition, "🌡️")
    
    with gr.Group(elem_classes=["weather-widget"]) as widget:
        gr.Markdown(f"### {icon} Weather - {safe_get(weather_data, 'location', 'Unknown')}")
        gr.Markdown(f"**{safe_get(weather_data, 'temperature', 0)}°C** - {condition}")
        gr.Markdown(f"Humidity: {safe_get(weather_data, 'humidity', 0)}% | Wind: {safe_get(weather_data, 'wind_speed', 0)} km/h")
        
        # Add forecast if available
        if "forecast" in weather_data and weather_data["forecast"]:
            gr.Markdown("**Forecast:**")
            forecast_text = ""
            for day in weather_data["forecast"][:3]:  # Show up to 3 days
                day_icon = weather_icons.get(safe_get(day, "condition", "Unknown"), "🌡️")
                forecast_text += f"{safe_get(day, 'day', 'Day')}: {day_icon} {safe_get(day, 'high', 0)}°C/{safe_get(day, 'low', 0)}°C "  
            gr.Markdown(forecast_text)
    
    return widget