"""Display management module for PygStormGames.

Handles text display, navigation, and information presentation including:
- Text display with navigation
- Instructions display
- Credits display
- Donation link handling
"""

import os
import webbrowser
import pyglet
from pyglet.window import key
import pyperclip
import wx

class Display:
    """Handles display and text navigation systems."""
    
    def __init__(self, game):
        """Initialize display system.
    
        Args:
            game (PygStormGames): Reference to main game object
        """
        self.game = game
        self.window = pyglet.window.Window(800, 600, caption=game.gameTitle)
        self.displayedInstructions = False
        self.currentText = []
        self.currentIndex = 0
        self.gameTitle = game.gameTitle
        
    def display_text(self, text, speech):
        """Display and navigate text with speech output.
    
        Args:
            text (list): List of text lines to display
            speech (Speech): Speech system for audio output
        """
        # Stop bgm if present.
        self.game.sound.pause_bgm()
        # Store original text with blank lines for copying
        self.originalText = text.copy()
    
        # Create navigation text by filtering out blank lines
        self.navText = [line for line in text if line.strip()]
    
        # Add instructions at start
        if not self.displayedInstructions:
            instructions = ("Press space to read the whole text. Use up and down arrows to navigate "
                        "the text line by line. Press c to copy the current line to the clipboard "
                        "or t to copy the entire text. Press enter or escape when you are done reading.")
            self.navText.insert(0, instructions)
            self.displayedInstructions = True
    
        # Add end marker
        self.navText.append("End of text.")
    
        self.currentIndex = 0
        speech.speak(self.navText[self.currentIndex])
    
        validKeys = [
            pyglet.window.key.ESCAPE, 
            pyglet.window.key.RETURN,
            pyglet.window.key.SPACE,
            pyglet.window.key.UP,
            pyglet.window.key.DOWN,
            pyglet.window.key.W,
            pyglet.window.key.S,
            pyglet.window.key.C,
            pyglet.window.key.T
        ]
    
        while True:
            key, _ = self.game.wait(validKeys)
        
            if key in (pyglet.window.key.ESCAPE, pyglet.window.key.RETURN):
                break
            
            if key in (pyglet.window.key.DOWN, pyglet.window.key.S) and self.currentIndex < len(self.navText) - 1:
                self.currentIndex += 1
                speech.speak(self.navText[self.currentIndex])
            
            if key in (pyglet.window.key.UP, pyglet.window.key.W) and self.currentIndex > 0:
                self.currentIndex -= 1
                speech.speak(self.navText[self.currentIndex])
            
            if key == pyglet.window.key.SPACE:
                speech.speak('\n'.join(self.originalText[1:-1]))
            
            if key == pyglet.window.key.C:
                try:
                    pyperclip.copy(self.navText[self.currentIndex])
                    speech.speak("Copied " + self.navText[self.currentIndex] + " to the clipboard.")
                except:
                    speech.speak("Failed to copy the text to the clipboard.")
                
            if key == pyglet.window.key.T:
                try:
                    pyperclip.copy(''.join(self.originalText[2:-1]))
                    speech.speak("Copied entire message to the clipboard.")
                except:
                    speech.speak("Failed to copy the text to the clipboard.")

    def instructions(self, speech):
        """Display game instructions from file.
        
        Args:
            speech (Speech): Speech system for audio output
        """
        try:
            with open('files/instructions.txt', 'r') as f:
                info = f.readlines()
        except:
            info = ["Instructions file is missing."]
            
        self.display_text(info, speech)

    def credits(self, speech):
        """Display game credits from file.
        
        Args:
            speech (Speech): Speech system for audio output
        """
        try:
            with open('files/credits.txt', 'r') as f:
                info = f.readlines()
            # Add the header
            info.insert(0, f"{self.gameTitle}: brought to you by Storm Dragon")
        except:
            info = ["Credits file is missing."]
            
        self.display_text(info, speech)

    def messagebox(self, text):
        """Display a simple message box with text.
    
        Shows a message that can be repeated until the user chooses to continue.
        
        Args:
            text (str): Message to display
        """
        text = text + "\nPress any key to repeat or enter to continue."
        while True:
            # Speak the text
            self.game.speech.speak(text)
        
            # Wait for any key
            key, _ = self.game.wait()
        
            # Exit if enter/escape pressed
            if key in (pyglet.window.key.RETURN, pyglet.window.key.ESCAPE):
                break

    def get_input(self, prompt="Enter text:", defaultText=""):
        """Display a dialog box for text input.

        Args:
            prompt (str): Prompt text to display
            defaultText (str): Initial text in input box
    
        Returns:
            str: User input text, or None if cancelled
        """
        app = wx.App(False)
        dialog = wx.TextEntryDialog(None, prompt, "Input", defaultText)
        dialog.SetValue(defaultText)
    
        # Bring dialog to front and give it focus
        dialog.Raise()
        dialog.SetFocus()
    
        if dialog.ShowModal() == wx.ID_OK:
            userInput = dialog.GetValue()
        else:
            userInput = None
        dialog.Destroy()
    
        # Return focus to game window
        self.window.activate()
    
        return userInput

    def donate(self, speech):
        """Open the donation webpage."""
        speech.speak("Opening donation page. Press space or enter to continue.")
        webbrowser.open('https://ko-fi.com/stormux')
        validKeys = [
            pyglet.window.key.ESCAPE, 
            pyglet.window.key.RETURN,
            pyglet.window.key.SPACE
            ]
        key, _ = self.game.wait(validKeys)