import os
import argparse
from dataclasses import dataclass, field
from typing import List


@dataclass
class Options:
    # can be changed
    jrnl_fname: str = f"{os.path.expanduser('~')}/documents/records/todo.md"
    todo_block_title: str = "todotxt"
    dryrun: bool = False
    taskwarrior_log_completed: bool = True
    taskwarrior_add_incomplete: bool = True
    taskwarrior_fill_today: bool = True

    # can not yet be changed
    taskwarrior_overrides: List = field(
        default_factory=lambda: [
            "rc.context=none",
            "rc.verbose=nothing",
            "rc.hooks=0",
        ]
    )
    regex_task_completed: str = r"(?:x|\[x\])"
    regex_task_incomplete: str = r"\[ \]"


def init():
    opt = Options()
    parse_cmdline_args(opt)
    if opt.dryrun:
        dryrun_show_options(opt)
    return opt


def dryrun_show_options(options):
    print(options)


def parse_cmdline_args(options):
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "-n", "--dryrun", help="only simulate and print changes", action="store_true"
    )
    parser.add_argument("-f", "--file", help="the jrnl file to ingest")
    parser.add_argument("-b", "--blocktitle", help="the title of entries to parse")
    parser.add_argument(
        "-L",
        "--nologging",
        help="don't log done todo items to taskwarrior",
        action="store_true",
    )
    parser.add_argument(
        "-I",
        "--noincomplete",
        help="don't add incomplete todo items to taskwarrior",
        action="store_true",
    )
    parser.add_argument(
        "-T",
        "--nofilltoday",
        help="don't add today's todo items as entry to file",
        action="store_true",
    )
    args = parser.parse_args()

    if args.dryrun:
        options.dryrun = True
    if args.nologging:
        options.taskwarrior_log_completed = False
    if args.noincomplete:
        options.taskwarrior_add_incomplete = False
    if args.nofilltoday:
        options.taskwarrior_fill_today = False
    if args.file:
        options.jrnl_fname = args.file
    if args.blocktitle:
        options.todo_block_title = args.blocktitle

    return options