142 lines
5.6 KiB
Python
142 lines
5.6 KiB
Python
import os
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import asyncio
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import logging
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from datetime import datetime, timezone
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from typing import Optional, List
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from telethon import TelegramClient
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from db.models import TargetChannel
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from db.repository import Repository
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from core.queue import RedisQueue
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from core.metrics import TARGET_ACTIVITY_TOTAL, QUEUE_POSTS_GAUGE, REDIS_QUEUE_SIZE_GAUGE
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from core.proxy import get_telegram_proxy
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from core.error_logger import log_exception
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logger = logging.getLogger(__name__)
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SESSION_DIR = os.getenv("SESSION_DIR", "/app/sessions" if os.path.exists("/app") else "/projects/telegram-bots/copykar/sessions")
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class PublisherService:
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def __init__(
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self,
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repo: Repository,
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queue: RedisQueue,
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client: Optional[TelegramClient] = None,
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api_id: Optional[int] = None,
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api_hash: Optional[str] = None,
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bot_token: Optional[str] = None,
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session_name: Optional[str] = None,
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):
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self.repo = repo
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self.queue = queue
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self.client = client
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self.api_id = api_id or int(os.getenv("API_ID", "0"))
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self.api_hash = api_hash or os.getenv("API_HASH", "")
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self.bot_token = bot_token or os.getenv("BOT_TOKEN")
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self.session_name = session_name or os.path.join(SESSION_DIR, "publisher.session")
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os.makedirs(os.path.dirname(self.session_name), exist_ok=True)
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if not self.client:
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self.client = TelegramClient(self.session_name, self.api_id, self.api_hash, proxy=get_telegram_proxy())
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self._running = False
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self._task: Optional[asyncio.Task] = None
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async def start(self):
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logger.info("Starting Paced Target Publisher Service...")
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if not self.client.is_connected():
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if self.bot_token:
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await self.client.start(bot_token=self.bot_token)
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else:
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await self.client.start()
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logger.info("Paced Target Publisher Service connected.")
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self._running = True
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self._task = asyncio.create_task(self._publisher_loop())
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def _is_in_sleep_window(self, target: TargetChannel, current_hour: int) -> bool:
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if not target.is_sleep_enabled:
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return False
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start = target.sleep_start_hour
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end = target.sleep_end_hour
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if start == end:
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return False
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if start < end:
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return start <= current_hour < end
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else:
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# Overnight sleep (e.g. 23:00 to 08:00)
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return current_hour >= start or current_hour < end
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async def _publisher_loop(self):
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while self._running:
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try:
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await self._process_all_target_queues()
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except Exception as e:
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logger.error(f"Error in target publisher loop: {e}", exc_info=True)
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await asyncio.sleep(15)
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async def _process_all_target_queues(self):
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targets = await self.repo.get_active_targets()
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now = datetime.now(timezone.utc)
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current_hour_local = (now.hour + 3) % 24 # UTC+3:30 approx hour
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total_queued = 0
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for target in targets:
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qsize = await self.queue.get_target_queue_size(target.id)
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total_queued += qsize
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QUEUE_POSTS_GAUGE.labels(status=f"target_{target.id}").set(qsize)
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if qsize == 0:
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continue
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# 1. Check Sleep Window
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if self._is_in_sleep_window(target, current_hour_local):
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logger.debug(f"Target #{target.id} ({target.title}) in sleep window ({target.sleep_start_hour}:00-{target.sleep_end_hour}:00). Skipping.")
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continue
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# 2. Check Cooldown Interval
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if target.last_post_time:
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last_post = target.last_post_time
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if last_post.tzinfo is None:
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last_post = last_post.replace(tzinfo=timezone.utc)
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diff_minutes = (now - last_post).total_seconds() / 60.0
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if diff_minutes < target.post_interval_min:
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continue
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# 3. Pop next post payload for this target
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payload = await self.queue.pop_target_post(target.id)
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if not payload:
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continue
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post_id = payload.get("post_id")
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text = payload.get("text", "")
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media_path = payload.get("media_path")
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try:
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if media_path and os.path.exists(media_path):
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await self.client.send_file(
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target.channel_id,
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file=media_path,
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caption=text,
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parse_mode="html"
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)
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else:
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await self.client.send_message(
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target.channel_id,
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text,
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parse_mode="html"
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)
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# Record publication in database
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await self.repo.record_post_published_to_target(post_id, target.id, target.title or "Target")
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await self.repo.update_target_last_post(target.id)
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TARGET_ACTIVITY_TOTAL.labels(channel_id=str(target.channel_id), title=target.title or '').inc()
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logger.info(f"Published post ID {post_id} to Target {target.title} ({target.channel_id})")
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except Exception as e:
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await log_exception("publisher.publish", e, {"post_id": post_id, "target_id": target.id, "channel_id": target.channel_id})
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REDIS_QUEUE_SIZE_GAUGE.set(total_queued)
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async def stop(self):
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self._running = False
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if self._task:
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self._task.cancel()
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logger.info("Publisher Service stopped.")
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