# 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 TYPE_CHECKING, ClassVar, List, Optional

from asyncpg import Record
from attr import dataclass, field
from yarl import URL

from mautrix.types import ContentURI, SyncToken, UserID
from mautrix.util.async_db import Database

from ..kt.types.bson import Long

fake_db = Database.create("") if TYPE_CHECKING else None


@dataclass
class Puppet:
    db: ClassVar[Database] = fake_db

    ktid: Long = field(converter=Long)
    name: Optional[str]
    photo_id: Optional[str]
    photo_mxc: Optional[ContentURI]
    name_set: bool
    avatar_set: bool
    is_registered: bool

    custom_mxid: Optional[UserID]
    access_token: Optional[str]
    next_batch: Optional[SyncToken]
    base_url: Optional[URL]

    @classmethod
    def _from_row(cls, row: Record) -> Puppet:
        data = {**row}
        base_url = data.pop("base_url", None)
        return cls(**data, base_url=URL(base_url) if base_url else None)

    @classmethod
    def _from_optional_row(cls, row: Optional[Record]) -> Optional[Puppet]:
        return cls._from_row(row) if row is not None else None

    @classmethod
    async def get_by_ktid(cls, ktid: int) -> Optional[Puppet]:
        q = (
            "SELECT ktid, name, photo_id, photo_mxc, name_set, avatar_set, is_registered, "
            "       custom_mxid, access_token, next_batch, base_url "
            "FROM puppet WHERE ktid=$1"
        )
        row = await cls.db.fetchrow(q, ktid)
        return cls._from_optional_row(row)

    @classmethod
    async def get_by_name(cls, name: str) -> Optional[Puppet]:
        q = (
            "SELECT ktid, name, photo_id, photo_mxc, name_set, avatar_set, is_registered, "
            "       custom_mxid, access_token, next_batch, base_url "
            "FROM puppet WHERE name=$1"
        )
        row = await cls.db.fetchrow(q, name)
        return cls._from_optional_row(row)

    @classmethod
    async def get_by_custom_mxid(cls, mxid: UserID) -> Optional[Puppet]:
        q = (
            "SELECT ktid, name, photo_id, photo_mxc, name_set, avatar_set, is_registered, "
            "       custom_mxid, access_token, next_batch, base_url "
            "FROM puppet WHERE custom_mxid=$1"
        )
        row = await cls.db.fetchrow(q, mxid)
        return cls._from_optional_row(row)

    @classmethod
    async def get_all_with_custom_mxid(cls) -> List[Puppet]:
        q = (
            "SELECT ktid, name, photo_id, photo_mxc, name_set, avatar_set, is_registered, "
            "       custom_mxid, access_token, next_batch, base_url "
            "FROM puppet WHERE custom_mxid<>''"
        )
        rows = await cls.db.fetch(q)
        return [cls._from_row(row) for row in rows if row]

    @property
    def _values(self):
        return (
            self.ktid,
            self.name,
            self.photo_id,
            self.photo_mxc,
            self.name_set,
            self.avatar_set,
            self.is_registered,
            self.custom_mxid,
            self.access_token,
            self.next_batch,
            str(self.base_url) if self.base_url else None,
        )

    async def insert(self) -> None:
        q = """
            INSERT INTO puppet (ktid, name, photo_id, photo_mxc, name_set, avatar_set,
                                is_registered, custom_mxid, access_token, next_batch, base_url)
            VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
        """
        await self.db.execute(q, *self._values)

    async def delete(self) -> None:
        q = "DELETE FROM puppet WHERE ktid=$1"
        await self.db.execute(q, self.ktid)

    async def save(self) -> None:
        q = """
            UPDATE puppet SET name=$2, photo_id=$3, photo_mxc=$4, name_set=$5, avatar_set=$6,
                              is_registered=$7, custom_mxid=$8, access_token=$9, next_batch=$10,
                              base_url=$11
            WHERE ktid=$1
        """
        await self.db.execute(q, *self._values)