"""
MOSAICX Display Module - Terminal User Interface Components

================================================================================
MOSAICX: Medical cOmputational Suite for Advanced Intelligent eXtraction
================================================================================

Overview:
---------
This module provides sophisticated terminal display capabilities for the MOSAICX
application, leveraging modern Python libraries to create visually appealing and
informative command-line interfaces. It serves as the primary presentation layer
for user interactions and system feedback.

Core Functionality:
------------------
• Branded application banners with gradient styling
• Institutional attribution and contact information display  
• Status messages with semantic color coding
• Progress indicators and loading animations
• Interactive console elements with Rich library integration

Architecture:
------------
The module follows a functional design pattern, exposing utility functions for
different display scenarios while maintaining a centralized console instance for
consistent styling across the application.

Usage Examples:
--------------
Display main application banner:
    >>> from mosaicx.display import show_main_banner
    >>> show_main_banner()

Custom styled console output:
    >>> from mosaicx.display import console, styled_message
    >>> console.print("Processing complete", style="bold green")
    >>> styled_message("Warning: Check configuration", "warning")

Dependencies:
------------
External Libraries:
    • cfonts (^1.0.0): ASCII art text generation and styling
    • rich (^13.0.0): Advanced terminal formatting, tables, and progress bars

Standard Library:
    • typing: Type hint support for better code documentation

Module Metadata:
---------------
Author:        Lalith Kumar Shiyam Sundar, PhD
Email:         Lalith.shiyam@med.uni-muenchen.de  
Institution:   DIGIT-X Lab, LMU Radiology | LMU University Hospital
License:       AGPL-3.0 (GNU Affero General Public License v3.0)
Version:       1.0.0
Created:       2025-09-18
Last Modified: 2025-09-18

Copyright Notice:
----------------
© 2025 DIGIT-X Lab, LMU Radiology | LMU University Hospital
This software is distributed under the AGPL-3.0 license.
See LICENSE file for full terms and conditions.
"""

from typing import Optional, Dict, Any

try:
    from cfonts import say  # type: ignore[import-not-found]
except ModuleNotFoundError:  # pragma: no cover - optional dependency
    say = None  # type: ignore[assignment]
from rich.console import Console
from rich.text import Text
from rich.align import Align
from rich.panel import Panel

# Import constants from centralized constants module
from .constants import (
    APPLICATION_NAME,
    APPLICATION_FULL_NAME,
    APPLICATION_VERSION as __version__,
    AUTHOR_NAME as __author__,
    AUTHOR_EMAIL as __email__,
    INSTITUTION_NAME as __institution__,
    INSTITUTION_SHORT,
    LICENSE_TYPE as __license__,
    COPYRIGHT_NOTICE as __copyright__,
    MOSAICX_COLORS,
    BANNER_STYLE,
    BANNER_COLORS
)

# Global console instance for consistent styling
console = Console()

# Export list for public API
__all__ = [
    "console", 
    "show_main_banner", 
    "styled_message", 
    "MOSAICX_COLORS",
    "__version__",
    "__author__"
]


def show_main_banner() -> None:
    """
    Display the main MOSAICX application banner with institutional branding.
    
    This function creates a visually appealing startup banner featuring:
    - Large ASCII art title using cfonts
    - Full application name expansion
    - Institutional attribution
    - Development status teaser
    """
    # Clear screen space for banner
    console.print("\n")
    
    if say is not None:
        # Main MOSAICX banner with gradient colors
        say(
            APPLICATION_NAME,
            colors=BANNER_COLORS,
            align="center",
            font=BANNER_STYLE,
            space=False,
        )
    else:
        console.rule(f" [bold]{APPLICATION_NAME}[/bold] ", style=MOSAICX_COLORS["accent"])

    # Application name expansion
    expansion = Text(
        APPLICATION_FULL_NAME,
        style=MOSAICX_COLORS["secondary"],
        justify="center",
    )
    console.print(Align.center(expansion))
    console.print()

    # Institutional attribution
    origin = Text(
        INSTITUTION_SHORT + " @ " + __institution__, 
        style=MOSAICX_COLORS["primary"]
    )
    console.print(Align.center(origin))
    console.print()

    # Development status capabilities
    capabilities = Text(
        "LLMS for Intelligent Structuring • Summarization • Classification", 
        style=MOSAICX_COLORS["secondary"]
    )
    console.print(Align.center(capabilities))
    
    # Add spacing after banner
    console.print("\n")


def styled_message(message: str, style: str = "info", center: bool = False) -> None:
    """
    Display a styled message using predefined color scheme.
    
    Args:
        message (str): The message text to display
        style (str): Style type from MOSAICX_COLORS or Rich style string
        center (bool): Whether to center the message
        
    Example:
        >>> styled_message("Processing complete", "success")
        >>> styled_message("Warning: Check configuration", "warning", center=True)
    """
    # Use predefined colors if available, otherwise use the style directly
    display_style = MOSAICX_COLORS.get(style, style)
    
    if center:
        text = Text(message, style=display_style, justify="center")
        console.print(Align.center(text))
    else:
        console.print(message, style=display_style)


def create_panel(
    content: str, 
    title: Optional[str] = None, 
    style: str = "info"
) -> Panel:
    """
    Create a styled panel for important information display.
    
    Args:
        content (str): Panel content text
        title (str, optional): Panel title
        style (str): Style from MOSAICX_COLORS
        
    Returns:
        Panel: Rich Panel object for display
        
    Example:
        >>> panel = create_panel("System ready", "Status", "success")
        >>> console.print(panel)
    """
    panel_style = MOSAICX_COLORS.get(style, style)
    return Panel(
        content,
        title=title,
        border_style=panel_style,
        title_align="left"
    )


# Initialize banner display when module is imported directly
if __name__ == "__main__":
    show_main_banner()
