# Standard libraries
import base64
import io
import json
import os
import re
import tempfile
import time
from os import getenv
from typing import Any
from typing import Dict
from typing import IO
from typing import List
from typing import Optional
from typing import Tuple
from typing import Union

# Third-party libraries
import streamlit as st


from var_app import __version__

# Au début du fichier, après les imports
st.set_page_config(
    page_title=f"DEMORRHA - (v{__version__})",
    page_icon="👹",
    layout="wide",
    initial_sidebar_state="collapsed"
)


LANGUAGES_EMOJI = {
    "Afrikaans": "🇿🇦", "Arabic": "🇸🇦", "Armenian": "🇦🇲", "Azerbaijani": "🇦🇿", "Belarusian": "🇧🇾", 
    "Bosnian": "🇧🇦", "Bulgarian": "🇧🇬", "Catalan": "🇪🇸", "Chinese": "🇨🇳", "Croatian": "🇭🇷", 
    "Czech": "🇨🇿", "Danish": "🇩🇰", "Dutch": "🇳🇱", "English": "🇬🇧", "Estonian": "🇪🇪", 
    "Finnish": "🇫🇮", "French": "🇫🇷", "Galician": "🇪🇸", "German": "🇩🇪", "Greek": "🇬🇷", 
    "Hebrew": "🇮🇱", "Hindi": "🇮🇳", "Hungarian": "🇭🇺", "Icelandic": "🇮🇸", "Indonesian": "🇮🇩", 
    "Italian": "🇮🇹", "Japanese": "🇯🇵", "Kannada": "🇮🇳", "Kazakh": "🇰🇿", "Korean": "🇰🇷", 
    "Latvian": "🇱🇻", "Lithuanian": "🇱🇹", "Macedonian": "🇲🇰", "Malay": "🇲🇾", "Marathi": "🇮🇳", 
    "Maori": "🇳🇿", "Nepali": "🇳🇵", "Norwegian": "🇳🇴", "Persian": "🇮🇷", "Polish": "🇵🇱", 
    "Portuguese": "🇵🇹", "Romanian": "🇷🇴", "Russian": "🇷🇺", "Serbian": "🇷🇸", "Slovak": "🇸🇰", 
    "Slovenian": "🇸🇮", "Spanish": "🇪🇸", "Swahili": "🇰🇪", "Swedish": "🇸🇪", "Tagalog": "🇵🇭", 
    "Tamil": "🇮🇳", "Thai": "🇹🇭", "Turkish": "🇹🇷", "Ukrainian": "🇺🇦", "Urdu": "🇵🇰", 
    "Vietnamese": "🇻🇳", "Welsh": "🏴󠁧󠁢󠁷󠁬󠁳󠁿"
}


def load_ui_language(file_path: Optional[str] = "ui_lang_support.json") -> Dict[str, Any]:
    """
    Charge les traductions de l'interface utilisateur à partir d'un fichier JSON.

    Args:
        file_path (Optional[str]): Chemin vers le fichier JSON contenant les traductions.

    Returns:
        Dict[str, Any]: Un dictionnaire contenant les traductions de l'interface utilisateur.
    """
    try:
        with open(file_path, 'r', encoding='utf-8') as file:
            return json.load(file)
    except FileNotFoundError:
        print(f"{get_translation('erreur_fichier_non_trouve')} {file_path}")
        return {}
    except json.JSONDecodeError:
        print(f"{get_translation('erreur_lecture_fichier')} JSON decoding error")
        return {}
    except IOError as e:
        print(f"{get_translation('erreur_lecture_fichier')} {e}")
        return {}


def get_translation(key: str) -> str:
    """
    Obtient la traduction pour une clé donnée basée sur la langue d'interface sélectionnée.
    """
    lang = st.session_state.get('interface_language', 'English')
    return translations.get(lang, {}).get(key, key)

# Dictionary to store translations
translations = load_ui_language()


def language_selection_page():
    # Fonction de rappel pour mettre à jour la langue temporaire lorsque la sélection change
    def update_temp_language():
        st.session_state['temp_interface_language'] = st.session_state['language_selector']
    
    # Initialiser la langue temporaire si elle n'existe pas
    if 'temp_interface_language' not in st.session_state:
        st.session_state['temp_interface_language'] = st.session_state.get('interface_language', 'English')
    
    # Titre basé sur la langue temporaire
    st.title(translations[st.session_state['temp_interface_language']].get('selection_de_la_langue', 'Language Selection'))
    
    # Sélecteur de langue avec un callback pour mettre à jour la langue temporaire
    selected_language = st.selectbox(
        translations[st.session_state['temp_interface_language']].get('choix_selection_langue', 'Choose the interface language'),
        options=list(translations.keys()),
        index=list(translations.keys()).index(st.session_state['temp_interface_language']),
        format_func=lambda lang: f"{LANGUAGES_EMOJI.get(lang, '')} {lang}",
        key='language_selector',
        on_change=update_temp_language
    )
    
    # Afficher les instructions basées sur la langue temporaire
    st.write(translations[st.session_state['temp_interface_language']].get('instruction_selection_langue', 'Please select a language.'))
    
    # Bouton de confirmation avec traduction
    if st.button(translations[st.session_state['temp_interface_language']].get('confirmer', 'Confirm')):
        st.session_state.interface_language = selected_language
        st.session_state.init_launch_app = False
        st.rerun()


def main():
    if 'init_launch_app' not in st.session_state:
        st.session_state.init_launch_app = True
    
    if 'interface_language' not in st.session_state:
        st.session_state.interface_language = 'English'

    if st.session_state.init_launch_app:
        language_selection_page()
    else:
        st.switch_page("pages/main.py")

# Point d'entrée de l'application
if __name__ == "__main__":
    main()