import re
import os
from random import randrange

def new_upload(output_file):
    """
    Extracts 1 to 3 sentences from input_file and writes them to output_file.
    """
    num_sentences = randrange(1, 4)
    input_file = '../HP1.txt'
    index_file = '../read_index.txt'

    def read_sentences(file_path, start_index, num_sentences):
        sentences = []
        with open(file_path, 'r') as file:
            text = file.read()
            sentences = re.split(r'(?<!\w\.\w.)(?<![A-Z][a-z]\.)(?<=\.|\?)\s', text)
        return sentences[start_index:start_index + num_sentences], start_index + num_sentences

    def write_sentences(sentences, output_path):
        with open(output_path, 'w') as file:
            for sentence in sentences:
                file.write(sentence + ' ')

    def read_index(index_file):
        if not os.path.exists(index_file):
            return 0
        with open(index_file, 'r') as file:
            return int(file.read().strip())

    def write_index(index_file, index):
        with open(index_file, 'w') as file:
            file.write(str(index))

    # Read the current index
    start_index = read_index(index_file)

    # Read 1 to 3 sentences from the input file
    sentences, new_index = read_sentences(input_file, start_index, num_sentences)

    # Write the sentences to the output file
    write_sentences(sentences, output_file)

    # Write the new index back to the index file
    write_index(index_file, new_index)

    print(f"Successfully wrote {len(sentences)} sentence(s) to {output_file}.")