from dataclasses import dataclass
from datetime import datetime


@dataclass
class WatchGuild:
    '''WatchGuild represents a Discord guild as stored in the database.

    Attributes:
        id: Guild ID as given by Discord
        name: Name of the guild at the time of adding the bot
    '''
    id: int
    name: str
    join_date: datetime


@dataclass
class WatchChannel:
    '''WatchChannel represents a Discord channel being watched for new messages

    Attributes:
        id: Channel ID as given by Discord
        name: Name of the channel at the time of registration
        register_date: Datetime object when the channel was registered
        guild: WatchGuild object of which the channel belongs to
    '''
    id: int
    name: str
    register_date: datetime
    guild: WatchGuild


@dataclass
class WatchUser:
    '''WatchUser represents a Discord user who has sent a message in a watched channel.
    Attributes:
        id: User ID as given by Discord
        name: Nickname in the server at the time of latest message recorded
    '''
    id: int
    name: str


@dataclass
class WatchMessage:
    '''WatchMessage represents a Discord message sent in a watched channel.

    Attributes:
        id: Message ID as given by Discord.
        contents: Raw contents of the message.
        published_date: Datetime object representing when the message was sent.
        author: WatchUser who sent the message.
        channel: WatchChannel in which the message was sent.
        guild: WatchGuild in which the message was sent.
    '''
    id: int
    contents: str
    published_date: datetime
    author: WatchUser
    channel: WatchChannel
    guild: WatchGuild