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agessaman
295d757914
The two commands carried near-identical copies of fetch-until-short, split-at-a-natural-break and two-part send. modules/joke_text.py now holds them as plain functions (a mixin module under modules/commands would be loaded as a plugin and recorded as a failure). Each command keeps its public method names, its emoji, its own split points (joke also splits on newlines) and its own pause: joke still waits 2 s between the two parts, dadjoke does not. Lengths stay counted in characters against 130, as before.
89 lines
3.2 KiB
Python
89 lines
3.2 KiB
Python
"""Length handling shared by the joke-style commands (joke, dadjoke).
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Both fetch a joke from an API, retry for a short one unless long jokes are
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allowed, and split a long one into two messages at a natural break. Lengths are
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counted in characters against a fixed limit, as these commands always have.
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"""
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from __future__ import annotations
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import asyncio
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from collections.abc import Awaitable, Callable, Sequence
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from typing import Any, Optional
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JOKE_CHAR_LIMIT = 130
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MAX_FETCH_ATTEMPTS = 5
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async def fetch_fitting_joke(
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fetch: Callable[[], Awaitable[Optional[dict[str, Any]]]],
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format_joke: Callable[[dict[str, Any]], str],
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*,
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allow_long: bool,
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logger: Any,
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label: str,
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) -> Optional[dict[str, Any]]:
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"""Fetch jokes until one fits ``JOKE_CHAR_LIMIT`` (or any, when long ones are allowed).
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Returns None when a fetch fails; after ``MAX_FETCH_ATTEMPTS`` long jokes,
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returns the last one anyway.
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"""
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joke_data = None
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for _attempt in range(MAX_FETCH_ATTEMPTS):
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joke_data = await fetch()
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if joke_data is None:
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return None
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joke_text = format_joke(joke_data)
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if len(joke_text) <= JOKE_CHAR_LIMIT or allow_long:
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return joke_data
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logger.debug(f"{label.capitalize()} too long ({len(joke_text)} chars), fetching another...")
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logger.warning(f"Could not get short {label} after {MAX_FETCH_ATTEMPTS} attempts")
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return joke_data
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def split_joke_text(joke_text: str, emoji: str, split_points: Sequence[str]) -> list[str]:
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"""Split ``joke_text`` (which starts with ``"<emoji> "``) into two parts.
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Splits after the first of ``split_points`` found, else at the first space
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from the middle; both parts get the emoji prefix back.
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"""
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prefix = f"{emoji} "
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clean_joke = joke_text[len(emoji) + 1:] if joke_text.startswith(prefix) else joke_text
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for split_point in split_points:
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if split_point in clean_joke:
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parts = clean_joke.split(split_point, 1)
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if len(parts) == 2:
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return [f"{prefix}{parts[0]}{split_point}", f"{prefix}{parts[1]}"]
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mid_point = len(clean_joke) // 2
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for i in range(mid_point, len(clean_joke)):
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if clean_joke[i] == ' ':
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mid_point = i
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break
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return [f"{prefix}{clean_joke[:mid_point]}", f"{prefix}{clean_joke[mid_point + 1:]}"]
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async def send_joke(
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send: Callable[..., Awaitable[Any]],
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message: Any,
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joke_text: str,
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split: Callable[[str], list[str]],
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*,
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pause_seconds: float = 0.0,
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) -> None:
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"""Send a joke, as two messages when it is long and splits cleanly.
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The per-user rate limit applies to the first message only. A joke that
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does not split into two parts within the limit goes out whole.
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"""
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if len(joke_text) <= JOKE_CHAR_LIMIT:
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await send(message, joke_text)
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return
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parts = split(joke_text)
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if len(parts) == 2 and len(parts[0]) <= JOKE_CHAR_LIMIT and len(parts[1]) <= JOKE_CHAR_LIMIT:
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await send(message, parts[0])
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if pause_seconds:
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await asyncio.sleep(pause_seconds)
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await send(message, parts[1], skip_user_rate_limit=True)
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else:
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await send(message, joke_text)
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