# matrix-appservice-kakaotalk - A Matrix-KakaoTalk puppeting bridge.
# Copyright (C) 2022 Tulir Asokan, Andrew Ferrazzutti
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations

from typing import NamedTuple

from mautrix.appservice import IntentAPI
from mautrix.types import MessageEventContent, RelationType, RoomID
from mautrix.util.logging import TraceLogger

from ..kt.types.bson import Long
from ..kt.types.chat.attachment.reply import ReplyAttachment

from ..kt.client.types import TO_MSGTYPE_MAP

from .. import puppet as pu
from ..db import Message as DBMessage


class SendParams(NamedTuple):
    text: str
    # TODO Mentions
    reply_to: ReplyAttachment


async def matrix_to_kakaotalk(
    content: MessageEventContent, room_id: RoomID, log: TraceLogger, intent: IntentAPI
) -> SendParams:
    # NOTE By design, this *throws* if user intent can't be matched (i.e. if a reply can't be created)
    # TODO Mentions
    if content.relates_to.rel_type == RelationType.REPLY:
        message = await DBMessage.get_by_mxid(content.relates_to.event_id, room_id)
        if not message:
            raise ValueError(
                f"Couldn't find reply target {content.relates_to.event_id}"
                " to bridge text message reply metadata to KakaoTalk"
            )
        try:
            mx_event = await intent.get_event(room_id, message.mxid)
        except:
            log.exception(f"Failed to find Matrix event for reply target {message.mxid}")
            raise
        kt_sender = pu.Puppet.get_id_from_mxid(mx_event.sender)
        if kt_sender is None:
            raise ValueError(
                f"Found no KakaoTalk user ID for reply target sender {mx_event.sender}"
            )
        content.trim_reply_fallback()
        reply_to = ReplyAttachment(
            # TODO
            #mentions=[],
            # TODO What are reply URLs for?
            #urls=[],
            # TODO Set this for emoticon reply, but must first support those
            attach_only=False,
            # TODO If replying with media works, must set type AND all attachment properties
            #      But then, the reply object must be an intersection of a ReplyAttachment and something else
            #attach_type=TO_MSGTYPE_MAP.get(content.msgtype),
            src_logId=message.ktid,
            # TODO
            src_mentions=[],
            # TODO Check if source message needs to be formatted
            src_message=mx_event.content.body,
            src_type=TO_MSGTYPE_MAP[mx_event.content.msgtype],
            src_userId=Long(kt_sender),
        )
    else:
        reply_to = None
    return SendParams(text=content.body, reply_to=reply_to)