import discord
import json

ENCODING = "utf-8"


class BaseModule:
    _client = None

    def __init__(self, client):
        self._client = client

    async def load(self):
        raise NotImplementedError

    async def save(self, save_to_file=True):
        raise NotImplementedError

    async def handle_message(self, message) -> bool:
        raise NotImplementedError

    async def load_history(self, channel):
        messages = [
            {
                "id": message.id,
                "content": message.content,
                "date": message.created_at.strftime("%d/%m %H:%M:%S"),
            }
            async for message in channel.history(limit=10)
        ]
        return json.dumps(messages, ensure_ascii=False)

    async def get_guild_name(self, guildId) -> str:
        guild = await self._client.fetch_guild(guildId)
        return "[Server={0}]".format(guild.name)

    async def get_channel_name(self, channel) -> str:
        if isinstance(channel, discord.DMChannel):
            dm_channel = await self._client.fetch_channel(channel.id)
            return "[DM={0}]".format(dm_channel.recipient.name)
        else:
            return "[Server={0}] => [Channel={1}]".format(
                channel.guild.name, channel.name
            )