# This file is part of python-cinema-club-bot
# contributed in 2024 by Mikhail Kirillov (~w96k) <w96k@runbox.com>

# To the extent possible under law, the author(s) have dedicated all copyright
# and related and neighboring rights to this software to the public domain
# worldwide. This software is distributed without any warranty.

# You should have received a copy of the CC0 Public Domain Dedication along
# with this software. If not, see:
# <http://creativecommons.org/publicdomain/zero/1.0/>

from telegram import Update, error
from telegram.ext import ContextTypes
from datetime import datetime

from utils import context_init, normalize_username
from predicates import is_past, has_finished_movie, has_event_without_movie
from strings import EVENT_ARGS_NOT_PROVIDED, EVENT_INVALID_DATETIME, \
    EVENT_CREATED, EVENT_EDITED, EVENT_CANT_BE_IN_PAST, \
    EVENT_WHERE_NOT_PROVIDED, EVENT_MOVIE_NOT_CHOOSEN, EVENTS_LIST, \
    EVENT_FINISHED, NO_EVENTS, EVENTS_LIST_PLANNING, EVENTS_LIST_MOVIE_SET


async def create_event(
        update: Update,
        context: ContextTypes.DEFAULT_TYPE
) -> None:
    context_init(context)
    users = context.chat_data["users"]
    events = context.chat_data["events"]
    movies = context.chat_data["movies"]

    last_movie = movies[-1] if movies != [] else None

    if last_movie is None:
        raise error.TelegramError(EVENT_MOVIE_NOT_CHOOSEN)

    if has_finished_movie(context):
        raise error.TelegramError(EVENT_FINISHED)

    if context.args == []:
        raise error.TelegramError(EVENT_ARGS_NOT_PROVIDED)

    argument_when = context.args[0]

    try:
        event_when = datetime.strptime(argument_when, "%d.%m.%Y/%H:%M")
    except ValueError:
        raise error.TelegramError(EVENT_INVALID_DATETIME)

    if is_past(event_when):
        raise error.TelegramError(
            EVENT_CANT_BE_IN_PAST.format(
                when=event_when,
                today=datetime.today(),
            )
        )

    arguments_where = context.args[1:]

    if arguments_where == [] and events == []:
        raise error.TelegramError(EVENT_WHERE_NOT_PROVIDED)

    old_when = events[-2]["when"] if len(events) >= 2 else None
    old_where = events[-2]["where"] if len(events) >= 2 else None

    event_where = " ".join(arguments_where) if arguments_where != [] else old_where

    event_dict = dict(
        when=event_when,
        where=event_where,
        movie=last_movie["title"],
        user=last_movie["user"]
    )

    events[-1] = event_dict

    await update.message.reply_text(
        EVENT_EDITED.format(
            old_when=old_when,
            old_where=old_where,
            when=event_when,
            where=event_where,
            movie=event_dict["movie"],
        )
    )


async def list_events(
        update: Update,
        context: ContextTypes.DEFAULT_TYPE
) -> None:
    context_init(context)

    users = context.chat_data["users"]
    events = context.chat_data["events"]
    last_event = events[-1] if events != [] else None

    if last_event and last_event["movie"] is None:
        last_event["user"] = normalize_username(users[0])

    events_formatted: str = ""

    for event in events:
        event_status = "FINISHED" \
            if is_past(event["when"]) else "PLANNED"

        if event["movie"] is None:
            breakpoint()
            event_status = "PLANNING"
            events_formatted += EVENTS_LIST_PLANNING.format(
                user=event["user"],
                status=event_status
            )
        elif event["when"] is None or event["where"] is None:
            event_status = "PLANNING"
            events_formatted += EVENTS_LIST_MOVIE_SET.format(
                user=event["user"],
                movie=event["movie"],
                status=event_status
            )
        else:
            events_formatted += EVENTS_LIST.format(
                movie=event["movie"],
                user=event["user"],
                when=event["when"],
                where=event["where"],
                status=event_status
            )

    if events_formatted == "":
        events_formatted = NO_EVENTS

    await update.message.reply_text(events_formatted)