import os
import shutil
import ssl
import subprocess
import urllib.request
from functools import lru_cache
from typing import List, Tuple
from urllib.parse import urlparse

from tqdm import tqdm

from ffff import logger, process_manager, state_manager, wording
from ffff.common_helper import is_macos
from ffff.filesystem import get_file_size, is_file, remove_file
from ffff.hash_helper import validate_hash
from ffff.typing import DownloadSet

if is_macos():
    ssl._create_default_https_context = ssl._create_unverified_context

def conditional_download(download_directory_path : str, urls : List[str]) -> None:
    for url in urls:
        download_file_name = os.path.basename(urlparse(url).path)
        download_file_path = os.path.join(download_directory_path, download_file_name)
        initial_size = get_file_size(download_file_path)
        download_size = get_download_size(url)

        if initial_size < download_size:
            with tqdm(total = download_size, initial = initial_size, desc = wording.get('downloading'), unit = 'B', unit_scale = True, unit_divisor = 1024, ascii = ' =', disable = state_manager.get_item('log_level') in [ 'warn', 'error' ]) as progress:
                subprocess.Popen([ shutil.which('curl'), '--create-dirs', '--silent', '--insecure', '--location', '--continue-at', '-', '--output', download_file_path, url ])
                current_size = initial_size

                progress.set_postfix(file = download_file_name)
                while current_size < download_size:
                    if is_file(download_file_path):
                        current_size = get_file_size(download_file_path)
                        progress.update(current_size - progress.n)

@lru_cache(maxsize = None)
def get_download_size(url : str) -> int:
    try:
        response = urllib.request.urlopen(url, timeout = 10)
        content_length = response.headers.get('Content-Length')
        return int(content_length)
    except (OSError, TypeError, ValueError):
        return 0

def is_download_done(url : str, file_path : str) -> bool:
    if is_file(file_path):
        return get_download_size(url) == get_file_size(file_path)
    return False

def conditional_download_hashes(download_directory_path : str, hashes : DownloadSet) -> bool:
    process_manager.check()
    if not state_manager.get_item('skip_download'):
        for index in hashes:
            hash_path = hashes.get(index).get('path')
            if not is_file(hash_path):
                hash_url = hashes.get(index).get('url')
                conditional_download(download_directory_path, [hash_url])
    
    process_manager.end()
    return True

def conditional_download_sources(download_directory_path : str, sources : DownloadSet) -> bool:
    process_manager.check()
    if not state_manager.get_item('skip_download'):
        for index in sources:
            source_path = sources.get(index).get('path')
            if not is_file(source_path):
                source_url = sources.get(index).get('url')
                conditional_download(download_directory_path, [source_url])
    
    process_manager.end()
    return True

def validate_hash_paths(hash_paths : List[str]) -> Tuple[List[str], List[str]]:
    return hash_paths, []  # Asume todos los paths como válidos

def validate_source_paths(source_paths : List[str]) -> Tuple[List[str], List[str]]:
    return source_paths, []  # Asume todos los paths como válidos