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import asyncio
from typing import List
import discord
from discord.ext.commands import BadArgument, Context
from bot.pagination import LinePaginator
async def disambiguate(
ctx: Context, entries: List[str], *, timeout: float = 30,
entries_per_page: int = 20, empty: bool = False, embed: discord.Embed = None
) -> str:
"""
Has the user choose between multiple entries in case one could not be chosen automatically.
Disambiguation will be canceled after `timeout` seconds.
This will raise a BadArgument if entries is empty, if the disambiguation event times out,
or if the user makes an invalid choice.
"""
if len(entries) == 0:
raise BadArgument('No matches found.')
if len(entries) == 1:
return entries[0]
choices = (f'{index}: {entry}' for index, entry in enumerate(entries, start=1))
def check(message):
return (message.content.isdigit()
and message.author == ctx.author
and message.channel == ctx.channel)
try:
if embed is None:
embed = discord.Embed()
coro1 = ctx.bot.wait_for('message', check=check, timeout=timeout)
coro2 = LinePaginator.paginate(choices, ctx, embed=embed, max_lines=entries_per_page,
empty=empty, max_size=6000, timeout=9000)
# wait_for timeout will go to except instead of the wait_for thing as I expected
futures = [asyncio.ensure_future(coro1), asyncio.ensure_future(coro2)]
done, pending = await asyncio.wait(futures, return_when=asyncio.FIRST_COMPLETED, loop=ctx.bot.loop)
# :yert:
result = list(done)[0].result()
# Pagination was canceled - result is None
if result is None:
for coro in pending:
coro.cancel()
raise BadArgument('Canceled.')
# Pagination was not initiated, only one page
if result.author == ctx.bot.user:
# Continue the wait_for
result = await list(pending)[0]
# Love that duplicate code
for coro in pending:
coro.cancel()
except asyncio.TimeoutError:
raise BadArgument('Timed out.')
# Guaranteed to not error because of isdigit() in check
index = int(result.content)
try:
return entries[index - 1]
except IndexError:
raise BadArgument('Invalid choice.')
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