#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os
import string
import sys
import pathlib


def _sanitize_line(l: str) -> str:
    if '\n' in l and l.startswith('"') and l.endswith('"'):
        return l[1:-1].replace('""', '"')
    return l

def _get_path(basepath: pathlib.Path, deckname: str) -> pathlib.Path:
    for p in basepath.iterdir():
        if p.name == deckname:
            return p
        if p.name.startswith(f'{deckname}.'):
            return p
    p = basepath / deckname
    p.mkdir()
    return p

def process_line(
        *,
        columns: list[str],
        columns_indices: list[int],
        deck_index: int,
        target_dir: pathlib.Path,
) -> None:
    columns = [_sanitize_line(l) for l in columns]
    deckpath = _get_path(target_dir, columns[deck_index])
    columns = [columns[i] for i in columns_indices]
    slug = ''.join(c for c in columns[0].lower() if c in string.ascii_lowercase + string.digits + ' ')
    slug = slug.replace(' ', '-')
    base_filename = deckpath / slug
    for i, c in enumerate(columns):
        with (base_filename.parent / (base_filename.name + f'.{i}.html')).open('w') as fp:
            fp.write(c)
            if not c.endswith('\n'):
                fp.write('\n')


def main(
        *,
        target_column_count: int = 6,
        columns_indices: list[int] = [3, 4],
        deck_index: int = 2,
        sep: str = '\t',
):
    target_dir = pathlib.Path(next(iter(sys.argv[1:] or ['.'])))
    buff = ''
    process_header = True
    for l in sys.stdin.readlines():
        if process_header and l.startswith('#'):
            continue
        else:
            process_header = False
        buff += l
        split_ = buff.split(sep)
        if len(split_) == target_column_count:
            process_line(
                columns=split_,
                columns_indices=columns_indices,
                deck_index=deck_index,
                target_dir=target_dir,
            )
            buff = ''

if __name__ == '__main__':
    main()