import logging
from typing import List

from pluralkit.bot import utils, embeds, help
from pluralkit.bot.commands import *

logger = logging.getLogger("pluralkit.commands")


@command(cmd="message", usage="<id>", description="Shows information about a proxied message. Requires the message ID.",
         category="Message commands", system_required=False)
async def message_info(ctx: CommandContext, args: List[str]):
    if len(args) == 0:
        return embeds.error("You must pass a message ID.", help=help.message_lookup)

    try:
        mid = int(args[0])
    except ValueError:
        return embeds.error("You must pass a valid number as a message ID.", help=help.message_lookup)

    # Find the message in the DB
    message = await db.get_message(ctx.conn, str(mid))
    if not message:
        raise embeds.error("Message with ID '{}' not found.".format(args[0]))

    # Get the original sender of the messages
    try:
        original_sender = await ctx.client.get_user_info(str(message.sender))
    except discord.NotFound:
        # Account was since deleted - rare but we're handling it anyway
        original_sender = None

    embed = discord.Embed()
    embed.timestamp = discord.utils.snowflake_time(str(mid))
    embed.colour = discord.Colour.blue()

    if message.system_name:
        system_value = "{} (`{}`)".format(message.system_name, message.system_hid)
    else:
        system_value = "`{}`".format(message.system_hid)
    embed.add_field(name="System", value=system_value)

    embed.add_field(name="Member", value="{} (`{}`)".format(message.name, message.hid))

    if original_sender:
        sender_name = "{}#{}".format(original_sender.name, original_sender.discriminator)
    else:
        sender_name = "(deleted account {})".format(message.sender)

    embed.add_field(name="Sent by", value=sender_name)

    if message.content: # Content can be empty string if there's an attachment
        embed.add_field(name="Content", value=message.content, inline=False)

    embed.set_author(name=message.name, icon_url=message.avatar_url or discord.Embed.Empty)

    return embed