250 lines
9.4 KiB
Python
250 lines
9.4 KiB
Python
# pxy_bots/views.py
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import json
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import logging
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from typing import Any, Dict, Optional
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from telegram import Bot
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from django.http import JsonResponse, HttpResponse
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from django.views.decorators.csrf import csrf_exempt
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from django.core.cache import cache
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from asgiref.sync import sync_to_async
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from .models import TelegramBot
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from .router import pick_db_route, post_json
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from .renderer import render_spec
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logger = logging.getLogger(__name__)
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# ---------------------------
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# Canonical req.v1 builder
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# ---------------------------
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def _pick_photo(sizes):
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if not sizes:
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return None
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sizes = sorted(sizes, key=lambda s: (s.get("width", 0) * s.get("height", 0)), reverse=True)
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top = sizes[0]
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return {
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"type": "photo",
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"file_id": top.get("file_id"),
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"mime": "image/jpeg",
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"size_bytes": None,
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"width": top.get("width"),
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"height": top.get("height"),
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}
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def _extract_media(msg: Dict[str, Any]) -> Optional[Dict[str, Any]]:
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if "photo" in msg:
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return _pick_photo(msg.get("photo") or [])
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if "voice" in msg:
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v = msg["voice"]
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return {"type": "voice", "file_id": v.get("file_id"), "mime": v.get("mime_type"),
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"size_bytes": v.get("file_size"), "duration": v.get("duration")}
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if "audio" in msg:
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a = msg["audio"]
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return {"type": "audio", "file_id": a.get("file_id"), "mime": a.get("mime_type"),
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"size_bytes": a.get("file_size"), "duration": a.get("duration")}
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if "video" in msg:
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v = msg["video"]
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return {"type": "video", "file_id": v.get("file_id"), "mime": v.get("mime_type"),
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"size_bytes": v.get("file_size"), "duration": v.get("duration"),
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"width": v.get("width"), "height": v.get("height")}
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if "video_note" in msg:
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v = msg["video_note"]
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return {"type": "video_note", "file_id": v.get("file_id"), "mime": None,
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"size_bytes": v.get("file_size"), "duration": v.get("duration"),
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"length": v.get("length")}
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if "animation" in msg:
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a = msg["animation"]
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return {"type": "animation", "file_id": a.get("file_id"), "mime": a.get("mime_type"),
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"size_bytes": a.get("file_size")}
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if "document" in msg:
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d = msg["document"]
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return {"type": "document", "file_id": d.get("file_id"), "mime": d.get("mime_type"),
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"size_bytes": d.get("file_size"), "file_name": d.get("file_name")}
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return None
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def build_req_v1(update: Dict[str, Any], bot_name: str) -> Dict[str, Any]:
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"""
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Normalize a Telegram update into our canonical req.v1 envelope.
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Pure function. No network, no state.
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"""
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schema_version = "req.v1"
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update_id = update.get("update_id")
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msg = update.get("message") or update.get("edited_message")
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cbq = update.get("callback_query")
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if msg:
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chat = msg.get("chat") or {}
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user = msg.get("from") or {}
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message_id = msg.get("message_id")
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ts = msg.get("date")
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text = msg.get("text")
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caption = msg.get("caption")
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location = msg.get("location")
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media = _extract_media(msg)
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trigger = "message"
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elif cbq:
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m = cbq.get("message") or {}
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chat = m.get("chat") or {}
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user = cbq.get("from") or {}
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message_id = m.get("message_id")
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ts = m.get("date") or None
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text = None
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caption = None
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location = None
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media = None
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trigger = "callback"
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else:
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chat = {}
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user = update.get("from") or {}
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message_id = None
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ts = None
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text = None
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caption = None
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location = None
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media = None
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trigger = "unknown"
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raw_cmd = None
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if text and isinstance(text, str) and text.startswith("/"):
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raw_cmd = text.split()[0][1:]
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elif caption and isinstance(caption, str) and caption.startswith("/"):
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raw_cmd = caption.split()[0][1:]
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elif cbq and isinstance(cbq.get("data"), str):
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raw_cmd = None # callbacks carry 'data' instead
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# --- NEW: pseudo-commands for media so we can route from Admin ---
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if not raw_cmd:
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if media and isinstance(media, dict):
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mtype = (media.get("type") or "").lower()
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if mtype in {"voice", "audio", "video", "photo", "document", "animation", "video_note"}:
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raw_cmd = f"__{mtype}__"
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elif location:
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raw_cmd = "__location__"
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env = {
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"schema_version": schema_version,
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"bot": {"username": bot_name},
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"chat": {"id": chat.get("id"), "type": chat.get("type")},
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"user": {"id": user.get("id"), "language": user.get("language_code")},
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"command": {
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"name": raw_cmd,
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"version": 1,
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"trigger": ("text_command" if raw_cmd and trigger == "message"
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else ("callback" if trigger == "callback" else trigger)),
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},
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"input": {
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"text": text,
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"caption": caption,
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"args_raw": text or caption,
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"media": media,
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"location": ({"lat": location.get("latitude"), "lon": location.get("longitude")} if location else None),
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},
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"callback": (
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{"id": cbq.get("id"), "data": cbq.get("data"),
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"origin": {"message_id": message_id, "chat_id": chat.get("id")}}
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if cbq else None
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),
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"context": {
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"message_id": message_id,
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"update_id": update_id,
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"ts": ts,
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"idempotency_key": f"tg:{message_id}:{user.get('id')}" if message_id and user.get("id") else None,
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},
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}
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return env
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# ---------------------------
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# Webhook (thin router)
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# ---------------------------
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@csrf_exempt
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async def telegram_webhook(request, bot_name: str):
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try:
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logger.info("Webhook called for bot=%s", bot_name)
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if request.method != "POST":
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return HttpResponse(status=405)
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# Load bot (sync ORM via sync_to_async)
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try:
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bot_instance = await sync_to_async(TelegramBot.objects.get)(
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name=bot_name, is_active=True
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)
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except TelegramBot.DoesNotExist:
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return JsonResponse({"error": f"Bot '{bot_name}' not found."}, status=400)
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# Parse raw payload
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try:
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payload = json.loads(request.body.decode("utf-8") or "{}")
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except json.JSONDecodeError:
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return JsonResponse({"ok": False, "error": "invalid_json"}, status=400)
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# ----- Idempotency / retry guard (drops duplicates for ~90s) -----
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upd_id = payload.get("update_id")
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cbq = payload.get("callback_query") or {}
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cbq_id = cbq.get("id")
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msg = payload.get("message") or {}
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fallback_msg_id = msg.get("message_id")
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fallback_user = (msg.get("from") or {}).get("id")
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dedupe_key = None
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if upd_id is not None:
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dedupe_key = f"tg:update:{upd_id}"
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elif cbq_id:
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dedupe_key = f"tg:cbq:{cbq_id}"
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elif fallback_msg_id and fallback_user:
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dedupe_key = f"tg:msg:{fallback_msg_id}:{fallback_user}"
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if dedupe_key:
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if not cache.add(dedupe_key, "1", timeout=90):
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logger.info("tg.idempotent.skip key=%s", dedupe_key)
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return JsonResponse({"status": "duplicate_skipped"})
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# -----------------------------------------------------------------
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# Build canonical req.v1
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try:
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canon = build_req_v1(payload, bot_name)
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logger.info("tg.canonical env=%s", json.dumps(canon, ensure_ascii=False))
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except Exception as e:
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logger.exception("tg.canonical.failed: %s", e)
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return JsonResponse({"ok": False, "error": "canonical_failed"}, status=400)
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# ----- DB-driven route (Admin) -----
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route = pick_db_route(bot_name, canon)
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if route:
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chat_id = (canon.get("chat") or {}).get("id")
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status, body = await sync_to_async(post_json)(
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route["url"], canon, route.get("timeout", 4), route.get("headers")
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)
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logger.info("tg.routed(db) url=%s status=%s", route["url"], status)
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spec = None
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if isinstance(body, dict) and ("messages" in body or body.get("schema_version") == "render.v1"):
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spec = body
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elif isinstance(body, dict) and "text" in body:
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spec = {"schema_version": "render.v1",
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"messages": [{"type": "text", "text": str(body["text"])}]}
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if spec and chat_id:
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bot = Bot(token=bot_instance.token)
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await render_spec(bot=bot, chat_id=chat_id, spec=spec)
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return JsonResponse({"status": "ok", "routed": True, "status_code": status})
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# Nothing matched → 204 (ack, but no action)
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logger.warning(
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"tg.no_route bot=%s trigger=%s cmd=%s",
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bot_name,
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(canon.get("command") or {}).get("trigger"),
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(canon.get("command") or {}).get("name"),
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)
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return JsonResponse({"status": "no_route"}, status=204)
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except Exception as e:
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logger.exception("Error in webhook: %s", e)
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return JsonResponse({"error": f"Unexpected error: {str(e)}"}, status=500)
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