import os
import json
import re
from langchain.text_splitter import RecursiveCharacterTextSplitter
import copy


def create_folder(folder_path):
    if not os.path.exists(folder_path):
        os.makedirs(folder_path)
        print(f"Folder '{folder_path}' created successfully.")


def shorten_filename(title, max_length=100):
    """Shorten a filename if it exceeds max_length by appending a hash."""
    if len(title) > max_length:
        title = title[:max_length - 9]  # Truncate and add hash
    return title


def ends_with_ending_punctuation(s):
    ending_punctuation = ('.', '?', '!')
    return any(s.endswith(char) for char in ending_punctuation)


def concat(title, content):
    if ends_with_ending_punctuation(title.strip()):
        return title.strip() + " " + content.strip()
    else:
        return title.strip() + ". " + content.strip()


def add_space_before_uppercase(text):
    """Add a space before each uppercase letter, except the first one."""
    return re.sub(r'([a-z])([A-Z])', r'\1 \2', text)


def add_punctuation(text):
    """Ensure sentences and phrases end properly without adding unnecessary punctuation."""
    text = text.strip()
    if text.endswith((',', '.')):
        return text  # If it already ends with a period or comma, don't add another one
    return text + '.'


def find_brief_title(d):
    if isinstance(d, dict):
        # If the key exists at the current level
        if 'briefTitle' in d:
            return d['briefTitle']

        # Recursively search in the dictionary's values
        for key, value in d.items():
            result = find_brief_title(value)
            if result:
                return result

    elif isinstance(d, list):
        # If the value is a list, search in each item
        for item in d:
            result = find_brief_title(item)
            if result:
                return result
    print("Didn't find the title!")
    return None  # Return None if not found


def json_to_sentence(json_data, level=0):
    """Convert JSON data to a meaningful sentence with proper handling of nested structures."""
    if isinstance(json_data, dict):
        sentence_parts = []
        for key, value in json_data.items():
            key = add_space_before_uppercase(key)
            key_formatted = key.replace('_', ' ').capitalize()
            if isinstance(value, (str, int, float, bool)):
                sentence_parts.append(add_punctuation(f"{key_formatted} is {value}"))
            elif isinstance(value, list):
                list_items = ', '.join(
                    json_to_sentence(item, level + 1) if isinstance(item, dict) else str(item)
                    for item in value
                )
                sentence_parts.append(add_punctuation(f"{key_formatted} includes {list_items}"))
            elif isinstance(value, dict):
                sentence_parts.append(add_punctuation(f"{key_formatted} details: {json_to_sentence(value, level + 1)}"))
        return ' '.join(sentence_parts)

    elif isinstance(json_data, list):
        return ', '.join(json_to_sentence(item, level + 1) for item in json_data)

    return str(json_data)


def clean_text(text):
    """Remove extra spaces, newline characters, and fix redundant punctuation."""
    text = re.sub(r'\s+', ' ', text)  # Replace multiple spaces/newlines with a single space
    text = re.sub(r'\.,', ',', text)  # Remove redundant ".,"
    text = re.sub(r'\.(?=\.)', '', text)  # Remove extra periods (e.g., "...")
    text = re.sub(r',\.', '.', text)  # Fix ",."
    return text.strip()  # Remove leading/trailing spaces


import os
import json

text_splitter = RecursiveCharacterTextSplitter(chunk_size=1000, chunk_overlap=200)

# Specify the directory containing the JSON files
folder_path = 'ctg-studies-json'

# Get a list of all files in the folder
files = os.listdir(folder_path)

# Filter only JSON files
json_files = [f for f in files if f.endswith('.json')]

# Loop through each JSON file and read its contents
for json_file in json_files:
    json_file_path = os.path.join(folder_path, json_file)
    print(json_file_path)
    file_name = os.path.basename(json_file_path)

    # Open and read the JSON file
    with open(json_file_path, 'r') as file:
        data = json.load(file)

#   if data["hasResults"] == True:
    formatted_text = json_to_sentence(data)
    if formatted_text is not None:
        cleaned_text = clean_text(formatted_text)
        title = find_brief_title(data)
        if title is not None:
            title = title.replace("/", " ").replace(":", " ")
            title = shorten_filename(title)
            title = re.sub(r'\s+', ' ', title).strip()

        chunk_texts = text_splitter.split_text(cleaned_text)
        saved_text = [
                json.dumps(
                    {
                        "id": '_'.join([file_name.replace(".json", ""), str(i)]),
                        "title": title,
                        "content": re.sub("\s+", " ", chunk_texts[i]),
                        "contents": concat(title, re.sub("\s+", " ", chunk_texts[i])),
                    }, ensure_ascii=False
                ) for i in range(len(chunk_texts))
            ]
        new_folder_path = "new_chunk"
        create_folder(folder_path=new_folder_path)
        with open(new_folder_path + "/{:s}".format(file_name.replace(".json", ".jsonl")), 'w') as f:
            f.write('\n'.join(saved_text))