import os
import requests
import json
from PyPDF2 import PdfReader

base_path = os.path.join("data", "config_files")
THEME_CONTEXT_PATH = os.path.join(base_path, "theme_context.json")

with open(THEME_CONTEXT_PATH, "r", encoding="utf-8") as f:
    themes = json.load(f)


def delete_file(file_path):
    try:
        os.remove(file_path)
        print(f"Deleted file: {file_path}")
    except OSError as e:
        print(f"Error deleting file {file_path}: {e}")



def delete_all_files_in_directory(directory_path):
    try:
        for filename in os.listdir(directory_path):
            file_path = os.path.join(directory_path, filename)
            if os.path.isfile(file_path):
                os.remove(file_path)
                print(f"Deleted file: {file_path}")
    except OSError as e:
        print(f"Error deleting files in {directory_path}: {e}")


def format_questions_text(questions_dict,key):
    """Format questions as text with dashes."""
    formatted_text = ""
    for question in questions_dict[key]:
        formatted_text += f"- {question['question']}\n"
    return formatted_text.strip()



def format_theme_text(theme_id):
    """Format questions as text with dashes."""
    formatted_text = "" 
    matching_themes = [t for t in themes if t["id"] == theme_id]
    current_theme = matching_themes[0]
    formatted_text += f"- {current_theme['id']}\n"
    formatted_text += f"- {current_theme['theme']}\n"
    formatted_text += f"- {current_theme['context']}\n"
    
    return formatted_text.strip()



def download_pdf_and_extract_text(url: str) -> str:
    # Create a temporary file path
    temp_file_path = 'temp.pdf'
    
    # Download the PDF from the URL
    response = requests.get(url)
    response.raise_for_status()  # Raise an error for bad responses
    with open(temp_file_path, 'wb') as f:
        f.write(response.content)

    # Load the PDF
    reader = PdfReader(temp_file_path)

    # Extract text from all pages and combine into one text
    combined_text = "\n\n".join(page.extract_text() for page in reader.pages if page.extract_text())

    # Delete the temporary file
    os.remove(temp_file_path)

    return combined_text


def format_qna_json_text(json_data):
    """
    Format a list of Q&A JSON data into a text string with dashes.
    
    Parameters:
    - json_data (list): A list of Q&A dictionaries with 'question' and 'answer' keys.
    
    Returns:
    - str: A formatted text string.
    """
    formatted_text = ""
    
    # Check if input is a list of Q&A dictionaries
    if isinstance(json_data, list):
        for item in json_data:
            if 'question' in item and 'answer' in item:
                formatted_text += f"- Question: {item['question']}\n"
                formatted_text += f"  Answer: {item['answer']}\n"
            else:
                formatted_text += "- Incomplete Q&A entry\n"
    
    return formatted_text.strip()

# Example usage: