# /// script
# requires-python = "==3.12"
# dependencies = [
#     "PyMuPDF>=1.26.0",
#     "datasets>=3.5.0",
# ]
# ///
import os
import gc
import re
import string
import json
import logging
import shutil
from datetime import datetime
from tqdm import tqdm

import fitz
from datasets import Dataset, load_dataset


output_path = os.path.join(".","data")

def remove(path):
    """ param <path> could either be relative or absolute. """
    if os.path.isfile(path) or os.path.islink(path):
        os.remove(path)  # remove the file
    elif os.path.isdir(path):
        shutil.rmtree(path)  # remove dir and all contains
    else:
        raise ValueError("file {} is not a file or dir.".format(path))

def reorganize_data(output_path: str, shard_size: str = "5"):
    """ Loads the temporary data folders in the data path and creates 5GB shards for each year, deletes temporary files
    """
    folders = os.listdir(output_path)
    temp_folders = [i for i in folders if "_t" in i]
    if len(temp_folders) == 0:
        print("DATA ORGANIZED")
        return
    print("REORGANIZING DATA...")
    for t_fold in tqdm(temp_folders):
        #load all separate parquets into 1 ds
        data_path = os.path.join(output_path,t_fold)
        data_set = load_dataset(data_path, split = "train")
        #save it to appropriately size chunks
        year_str = t_fold[:-2]
        new_data_path = os.path.join(output_path,year_str)
        try:
            data_set.save_to_disk(new_data_path, max_shard_size="5GB")
        except BaseException as e:
            print(f"temporarty_folder: {t_fold} could not be processed")
            print("Lowering max shard size to 3GB")
            #remove folder and try again
            remove(new_data_path)
            try:
                data_set.save_to_disk(new_data_path, max_shard_size="3GB")
            except BaseException as e:
                print(f"temporarty_folder: {t_fold} could not be processed")
                print("Lowering max shard size to 1GB")
                #remove folder and try again
                remove(new_data_path)
                try:
                    data_set.save_to_disk(new_data_path, max_shard_size="1GB")
                except BaseException as e:
                    print(f"temporarty_folder: {t_fold} could not be processed")
                    #print("Lowering max shard size to 1GB")
                    #remove folder and try again
                    remove(new_data_path)
                    continue
        #delete temp_folder
        try :
            remove(data_path)
        except PermissionError as e:
            print(f"{e}")
        data_set.cleanup_cache_files()

def main():
    reorganize_data(output_path)

if __name__ == "__main__":
    main()