Teknium
80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
"""Sticker description cache for Telegram.
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Stickers are described via the vision tool once and cached by file_unique_id
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(``~/.hermes/sticker_cache.json``) so the same image is never re-analyzed.
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"""
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import contextlib
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import json
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import os
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import tempfile
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import time
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from typing import Optional
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from hermes_cli.config import get_hermes_home
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CACHE_PATH = get_hermes_home() / "sticker_cache.json"
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# Kept concise to save tokens.
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STICKER_VISION_PROMPT = (
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"Describe this sticker in 1-2 sentences. Focus on what it depicts -- "
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"character, action, emotion. Be concise and objective."
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)
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def _load_cache() -> dict:
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try:
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return json.loads(CACHE_PATH.read_text(encoding="utf-8"))
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except (FileNotFoundError, json.JSONDecodeError, OSError):
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return {}
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def _save_cache(cache: dict) -> None:
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"""Write the cache atomically (temp file + fsync + replace)."""
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CACHE_PATH.parent.mkdir(parents=True, exist_ok=True)
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fd, tmp_path = tempfile.mkstemp(dir=str(CACHE_PATH.parent), suffix=".tmp")
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try:
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with os.fdopen(fd, "w", encoding="utf-8") as f:
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json.dump(cache, f, indent=2, ensure_ascii=False)
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f.flush()
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os.fsync(f.fileno())
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os.replace(tmp_path, str(CACHE_PATH))
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except BaseException:
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with contextlib.suppress(OSError):
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os.unlink(tmp_path)
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raise
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def get_cached_description(file_unique_id: str) -> Optional[dict]:
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"""Return ``{description, emoji, set_name, cached_at}`` or None."""
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return _load_cache().get(file_unique_id)
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def cache_sticker_description(file_unique_id: str, description: str, emoji: str = "", set_name: str = "") -> None:
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"""Store a vision-generated description under Telegram's stable sticker id."""
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cache = _load_cache()
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cache[file_unique_id] = {"description": description, "emoji": emoji, "set_name": set_name, "cached_at": time.time()}
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_save_cache(cache)
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def build_sticker_injection(description: str, emoji: str = "", set_name: str = "") -> str:
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"""Warm-style injection text, e.g.
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``[The user sent a sticker 😀 from "MyPack"~ It shows: "A cat waving" (=^.w.^=)]``.
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``set_name`` is only shown together with an emoji.
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"""
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context = f" {emoji}" if emoji else ""
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if set_name and emoji:
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context += f" from \"{set_name}\""
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return f"[The user sent a sticker{context}~ It shows: \"{description}\" (=^.w.^=)]"
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def build_animated_sticker_injection(emoji: str = "") -> str:
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"""Injection text for animated/video stickers we can't analyze."""
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if emoji:
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return (
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f"[The user sent an animated sticker {emoji}~ "
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f"I can't see animated ones yet, but the emoji suggests: {emoji}]"
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)
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return "[The user sent an animated sticker~ I can't see animated ones yet]"
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