vvzvlad
532 lines
23 KiB
Python
532 lines
23 KiB
Python
import logging
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import os
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import mimetypes
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import asyncio
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import json
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from datetime import datetime
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import time
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from contextlib import asynccontextmanager
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import random
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import magic
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from pyrogram import errors
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from starlette.background import BackgroundTask # imported for background file deletion
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from fastapi import FastAPI, HTTPException, Response
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from fastapi.responses import HTMLResponse, FileResponse
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from telegram_client import TelegramClient
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from config import get_settings
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from rss_generator import generate_channel_rss, generate_channel_html
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from post_parser import PostParser
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from url_signer import verify_media_digest
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logger = logging.getLogger(__name__)
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logger.setLevel(logging.INFO)
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if not logger.handlers:
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handler = logging.StreamHandler()
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handler.setFormatter(logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s'))
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logger.addHandler(handler)
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client = TelegramClient()
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Config = get_settings()
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@asynccontextmanager
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async def lifespan(_: FastAPI):
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# Create cache directory
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base_cache_dir = os.path.abspath("./data/cache")
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os.makedirs(base_cache_dir, exist_ok=True)
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await client.start()
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background_task = asyncio.create_task(cache_media_files()) # Start background task
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yield
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background_task.cancel() # Cleanup
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try:
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await background_task
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except asyncio.CancelledError:
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pass
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await client.stop()
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app = FastAPI( title="Pyrogram Bridge", lifespan=lifespan)
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run("api_server:app", host=Config["api_host"], port=Config["api_port"], reload=True)
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async def find_file_id_in_message(message, file_unique_id: str):
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"""Find file_id by checking all possible media types in message"""
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if message.media == "MessageMediaType.POLL":
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logger.debug(f"Message {message.id} is a poll, skipping media search")
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return None
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if message.photo and message.photo.file_unique_id == file_unique_id:
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return message.photo.file_id
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elif message.video and message.video.file_unique_id == file_unique_id:
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return message.video.file_id
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elif message.animation and message.animation.file_unique_id == file_unique_id:
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return message.animation.file_id
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elif message.video_note and message.video_note.file_unique_id == file_unique_id:
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return message.video_note.file_id
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elif message.audio and message.audio.file_unique_id == file_unique_id:
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return message.audio.file_id
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elif message.voice and message.voice.file_unique_id == file_unique_id:
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return message.voice.file_id
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elif message.sticker and message.sticker.file_unique_id == file_unique_id:
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return message.sticker.file_id
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elif message.web_page and message.web_page.photo and message.web_page.photo.file_unique_id == file_unique_id:
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return message.web_page.photo.file_id
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elif message.document and message.document.file_unique_id == file_unique_id:
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return message.document.file_id
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return None
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def delayed_delete_file(file_path: str, delay: int = 300):
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"""
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Delete temporary file after a delay to ensure complete file delivery.
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Delay is set to 5 minutes by default.
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"""
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time.sleep(delay)
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try:
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os.remove(file_path)
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logger.info(f"Deleted temporary file {file_path} after delay of {delay} seconds")
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except Exception as e:
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logger.error(f"Failed to delete temporary file {file_path}: {str(e)}")
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async def prepare_file_response(file_path: str, delete_after: bool = False):
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"""Prepare file response with proper headers"""
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if not os.path.exists(file_path):
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raise HTTPException(status_code=404, detail="File not found")
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# Try to determine MIME type using python-magic first
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try:
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mime = magic.Magic(mime=True)
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media_type = mime.from_file(file_path)
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except Exception as e:
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logger.warning(f"Failed to determine MIME type using python-magic: {str(e)}")
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media_type = None
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if not media_type: media_type, _ = mimetypes.guess_type(file_path) # Fallback to mimetypes if python-magic failed
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if not media_type: media_type = "application/octet-stream" # Final fallback to octet-stream
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logger.debug(f"Determined media type for {os.path.basename(file_path)}: {media_type}")
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headers = {"Content-Disposition": f"inline; filename={os.path.basename(file_path)}"}
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if delete_after:
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return FileResponse(path=file_path, media_type=media_type, headers=headers, background=BackgroundTask(delayed_delete_file, file_path))
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else:
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return FileResponse(path=file_path, media_type=media_type, headers=headers)
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async def download_media_file(channel: str, post_id: int, file_unique_id: str) -> str:
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"""
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Download media file from Telegram and save to cache
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Returns path to downloaded file
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"""
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base_cache_dir = os.path.abspath("./data/cache")
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# Create nested cache structure
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channel_dir = os.path.join(base_cache_dir, str(channel))
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post_dir = os.path.join(channel_dir, str(post_id))
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os.makedirs(post_dir, exist_ok=True)
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# Convert numeric channel ID to int if needed
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channel_id = channel
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if isinstance(channel, str) and channel.startswith('-100'):
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channel_id = int(channel)
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message = await client.client.get_messages(channel_id, post_id)
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if message.media == "MessageMediaType.POLL":
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return None, False
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# Check if it is a video and if its size exceeds 100 MB
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is_large_video = False
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if message.video:
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try:
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if message.video.file_size > 100 * 1024 * 1024:
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is_large_video = True
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except Exception as e:
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logger.error(f"Failed to get video file size for message {post_id}: {str(e)}")
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if is_large_video:
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# For large video, download without permanent caching; use a temporary file
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temp_file_path = os.path.join(post_dir, f"temp_{file_unique_id}")
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if os.path.exists(temp_file_path):
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logger.info(f"Temporary file {temp_file_path} already exists, serving cached large video")
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return temp_file_path, False
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file_id = await find_file_id_in_message(message, file_unique_id)
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if not file_id:
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logger.error(f"Media with file_unique_id {file_unique_id} not found in message {post_id}")
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raise HTTPException(status_code=404, detail="File not found in message")
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logger.info(f"Downloading large video file {file_unique_id} to temporary path {temp_file_path}")
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file_path = await client.client.download_media(file_id, file_name=temp_file_path)
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logger.info(f"Downloaded large video file {file_unique_id} to temporary path {temp_file_path}")
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return file_path, False
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# Normal caching flow
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cache_path = os.path.join(post_dir, file_unique_id)
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if os.path.exists(cache_path):
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logger.info(f"Found cached media file: {cache_path}")
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# Update access timestamp in media_file_ids.json
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file_ids_path = os.path.join(os.path.abspath("./data"), 'media_file_ids.json')
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try:
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if os.path.exists(file_ids_path):
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with open(file_ids_path, 'r', encoding='utf-8') as f:
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media_files = json.load(f)
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for file_data in media_files:
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if (file_data.get('channel') == channel and
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file_data.get('post_id') == post_id and
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file_data.get('file_unique_id') == file_unique_id):
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file_data['added'] = datetime.now().timestamp()
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break
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with open(file_ids_path, 'w', encoding='utf-8') as f:
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json.dump(media_files, f, ensure_ascii=False, indent=2)
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except Exception as e:
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logger.error(f"Failed to update timestamp for {channel}/{post_id}/{file_unique_id}: {str(e)}")
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return cache_path, False
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file_id = await find_file_id_in_message(message, file_unique_id)
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if not file_id:
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logger.error(f"Media with file_unique_id {file_unique_id} not found in message {post_id}")
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raise HTTPException(status_code=404, detail="File not found in message")
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file_path = await client.client.download_media(file_id, file_name=cache_path)
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logger.info(f"Downloaded media file {file_unique_id} to {cache_path}")
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return file_path, False
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async def remove_old_cached_files(media_files: list, cache_dir: str) -> tuple[list, int]:
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"""
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Remove files that haven't been accessed for more than 20 days
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Returns tuple of (updated media files list, number of removed files)
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"""
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current_time = datetime.now().timestamp()
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updated_media_files = []
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files_removed = 0
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for file_data in media_files:
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try:
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channel = file_data.get('channel')
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post_id = file_data.get('post_id')
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file_unique_id = file_data.get('file_unique_id')
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if not all([channel, post_id, file_unique_id]):
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continue
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last_access_time = file_data.get('added', 0)
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days_since_access = (current_time - last_access_time) / (24 * 3600)
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if days_since_access > 20:
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cache_path = os.path.join(cache_dir, str(channel), str(post_id), file_unique_id)
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if os.path.exists(cache_path):
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try:
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os.remove(cache_path)
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# Попробуем удалить пустые родительские директории
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post_dir = os.path.dirname(cache_path)
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channel_dir = os.path.dirname(post_dir)
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if not os.listdir(post_dir):
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os.rmdir(post_dir)
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if not os.listdir(channel_dir):
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os.rmdir(channel_dir)
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files_removed += 1
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logger.info(f"Removed old cached file: {cache_path}, last access {days_since_access:.1f} days ago")
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except Exception as e:
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logger.error(f"Failed to remove cached file {cache_path}: {str(e)}")
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updated_media_files.append(file_data)
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continue
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updated_media_files.append(file_data)
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except Exception as e:
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logger.error(f"Error processing cache entry {file_data}: {str(e)}")
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continue
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# Additionally, remove temporary files with prefix "temp_" if they are older than a threshold (1 hour)
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temp_threshold = 3600 # 1 hour in seconds
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for root, _, files in os.walk(cache_dir):
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for file in files:
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if file.startswith("temp_"):
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file_path = os.path.join(root, file)
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try:
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file_mod_time = os.path.getmtime(file_path)
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if time.time() - file_mod_time > temp_threshold:
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os.remove(file_path)
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files_removed += 1
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logger.info(f"Removed temporary file: {file_path}")
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except Exception as e:
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logger.error(f"Failed to remove temporary file {file_path}: {str(e)}")
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return updated_media_files, files_removed
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async def download_new_files(media_files: list, cache_dir: str):
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"""
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Download files that are not in cache yet
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"""
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if not media_files:
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logger.info("No media files found for download")
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return
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files_to_download = 0
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for file_data in media_files:
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try:
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channel = file_data.get('channel')
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post_id = file_data.get('post_id')
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file_unique_id = file_data.get('file_unique_id')
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if not all([channel, post_id, file_unique_id]):
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logger.error(f"Invalid file data: {file_data}")
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continue
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channel_dir = os.path.join(cache_dir, str(channel))
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post_dir = os.path.join(channel_dir, str(post_id))
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os.makedirs(post_dir, exist_ok=True)
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cache_path = os.path.join(post_dir, file_unique_id)
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if not os.path.exists(cache_path):
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files_to_download += 1
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logger.debug(f"Background download started for {channel}/{post_id}/{file_unique_id}")
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await download_media_file(channel, post_id, file_unique_id)
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await asyncio.sleep(1) # Delay between downloads
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except Exception as e:
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logger.error(f"Background download failed for {channel}/{post_id}/{file_unique_id}: {str(e)}")
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continue
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if files_to_download == 0:
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logger.info("All media files are already in cache")
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async def cache_media_files():
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"""Background task for cache management: removes old files and downloads new ones"""
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delay = 60
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while True:
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try:
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file_path = os.path.join(os.path.abspath("./data"), 'media_file_ids.json')
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if not os.path.exists(file_path):
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await asyncio.sleep(delay)
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continue
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with open(file_path, 'r', encoding='utf-8') as f:
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media_files = json.load(f)
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cache_dir = os.path.abspath("./data/cache")
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updated_media_files, files_removed = await remove_old_cached_files(media_files, cache_dir)
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if files_removed > 0:
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try:
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with open(file_path, 'w', encoding='utf-8') as f:
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json.dump(updated_media_files, f, ensure_ascii=False, indent=2)
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logger.info(f"Removed {files_removed} old files from cache")
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except Exception as e:
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logger.error(f"Failed to update media_file_ids.json: {str(e)}")
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await download_new_files(updated_media_files, cache_dir)
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await asyncio.sleep(delay) # Check every delay seconds
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except Exception as e:
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logger.error(f"Cache media files error: {str(e)}")
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await asyncio.sleep(delay)
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def calculate_cache_stats():
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"""
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Calculate cache statistics including file count, total size in MB, and time difference in days.
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Returns a dictionary with keys: 'cache_files_count', 'cache_total_size_mb', 'cache_time_diff_days', 'channels'.
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"""
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base_cache_dir = os.path.abspath("./data/cache")
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cache_files_count = 0
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cache_total_size_bytes = 0
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channels_stats = {}
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if os.path.isdir(base_cache_dir):
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# Recursively walk through all subdirectories
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for root, _, files in os.walk(base_cache_dir):
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for f in files:
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if not f.startswith('temp_'): # Skip temporary files
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file_path = os.path.join(root, f)
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file_size = os.path.getsize(file_path)
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cache_files_count += 1
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cache_total_size_bytes += file_size
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# Calculate per-channel statistics
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rel_path = os.path.relpath(root, base_cache_dir)
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channel = rel_path.split(os.sep)[0] # First directory is channel
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if channel not in channels_stats:
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channels_stats[channel] = {
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'files_count': 0,
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'size_mb': 0
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}
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channels_stats[channel]['files_count'] += 1
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channels_stats[channel]['size_mb'] = round(
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channels_stats[channel]['size_mb'] + (file_size / (1024 * 1024)), 2
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)
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cache_total_size_mb = round(cache_total_size_bytes / (1024 * 1024), 2) # rounded size in MB
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else:
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cache_files_count = 0
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cache_total_size_mb = 0
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media_file_ids_path = os.path.join(os.path.abspath("./data"), "media_file_ids.json")
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cache_times = []
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if os.path.exists(media_file_ids_path):
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try:
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with open(media_file_ids_path, "r", encoding="utf-8") as f:
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media_files = json.load(f)
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for entry in media_files:
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if "added" in entry:
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cache_times.append(entry["added"])
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except Exception as e:
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logger.error(f"Error reading media_file_ids.json: {str(e)}")
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if cache_times:
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cache_time_diff_seconds = max(cache_times) - min(cache_times)
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cache_time_diff_days = round(cache_time_diff_seconds / 86400, 2) # rounded to two decimals
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else:
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cache_time_diff_days = 0
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return {
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"cache_files_count": cache_files_count,
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"cache_total_size_mb": cache_total_size_mb,
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"cache_time_diff_days": cache_time_diff_days,
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"channels": channels_stats
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}
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@app.get("/html/{channel}/{post_id}", response_class=HTMLResponse)
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@app.get("/post/html/{channel}/{post_id}", response_class=HTMLResponse)
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@app.get("/html/{channel}/{post_id}/{token}", response_class=HTMLResponse)
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@app.get("/post/html/{channel}/{post_id}/{token}", response_class=HTMLResponse)
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async def get_post_html(channel: str, post_id: int, token: str | None = None):
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if Config["token"]:
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if token != Config["token"]:
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logger.error(f"Invalid token for HTML post: {token}, expected: {Config['token']}")
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raise HTTPException(status_code=403, detail="Invalid token")
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else:
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logger.info(f"Valid token for HTML post: {token}")
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try:
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parser = PostParser(client.client)
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html_content = await parser.get_post(channel, post_id, 'html')
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if not html_content:
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raise HTTPException(status_code=404, detail="Post not found")
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return html_content
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except Exception as e:
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error_message = f"Failed to get HTML post for channel {channel}, post_id {post_id}: {str(e)}"
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logger.error(error_message)
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raise HTTPException(status_code=500, detail=error_message) from e
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@app.get("/json/{channel}/{post_id}")
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@app.get("/post/json/{channel}/{post_id}")
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@app.get("/json/{channel}/{post_id}/{token}")
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@app.get("/post/json/{channel}/{post_id}/{token}")
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async def get_post(channel: str, post_id: int, token: str | None = None):
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if Config["token"]:
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if token != Config["token"]:
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logger.error(f"Invalid token for JSON post: {token}, expected: {Config['token']}")
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raise HTTPException(status_code=403, detail="Invalid token")
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else:
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logger.info(f"Valid token for JSON post: {token}")
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try:
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parser = PostParser(client.client)
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json_content = await parser.get_post(channel, post_id, 'json')
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if not json_content:
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raise HTTPException(status_code=404, detail="Post not found")
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return json_content
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except Exception as e:
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error_message = f"Failed to get JSON post for channel {channel}, post_id {post_id}: {str(e)}"
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logger.error(error_message)
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raise HTTPException(status_code=500, detail=error_message) from e
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@app.get("/health")
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@app.get("/health/{token}")
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async def health_check(token: str | None = None):
|
|
if Config["token"]:
|
|
if token != Config["token"]:
|
|
logger.error(f"Invalid token for health check: {token}, expected: {Config['token']}")
|
|
raise HTTPException(status_code=403, detail="Invalid token")
|
|
else:
|
|
logger.info(f"Valid token for health check: {token}")
|
|
|
|
try:
|
|
me = await client.client.get_me()
|
|
|
|
cache_stats = calculate_cache_stats()
|
|
|
|
return {
|
|
"status": "ok",
|
|
"tg_connected": client.client.is_connected,
|
|
"tg_name": me.username,
|
|
"tg_id": me.id,
|
|
"tg_phone": me.phone_number,
|
|
"tg_first_name": me.first_name,
|
|
"tg_last_name": me.last_name,
|
|
**cache_stats
|
|
}
|
|
except Exception as e:
|
|
error_message = f"Failed to get health check: {str(e)}"
|
|
logger.error(error_message)
|
|
raise HTTPException(status_code=500, detail=error_message) from e
|
|
|
|
@app.get("/media/{channel}/{post_id}/{file_unique_id}/{digest}")
|
|
@app.get("/media/{channel}/{post_id}/{file_unique_id}")
|
|
async def get_media(channel: str, post_id: int, file_unique_id: str, digest: str | None = None):
|
|
try:
|
|
url = f"{channel}/{post_id}/{file_unique_id}"
|
|
if not verify_media_digest(url, digest):
|
|
logger.error(f"Invalid digest for media {url}: {digest}, expected: {digest}")
|
|
#raise HTTPException(status_code=403, detail="Invalid URL signature")
|
|
else:
|
|
logger.info(f"Valid digest for media {url}: {digest}")
|
|
|
|
file_path, delete_after = await download_media_file(channel, post_id, file_unique_id)
|
|
return await prepare_file_response(file_path, delete_after=delete_after)
|
|
except HTTPException:
|
|
raise
|
|
except errors.RPCError as e:
|
|
logger.error(f"Media request RPC error for file_unique_id {file_unique_id} in message {post_id}: {type(e).__name__} - {str(e)}")
|
|
raise HTTPException(status_code=404, detail="File not found in Telegram") from e
|
|
except Exception as e:
|
|
error_message = f"Failed to get media for file_unique_id {file_unique_id} in message {post_id}: {str(e)}"
|
|
logger.error(error_message)
|
|
raise HTTPException(status_code=500, detail=error_message) from e
|
|
|
|
@app.get("/rss/{channel}", response_class=Response)
|
|
@app.get("/rss/{channel}/{token}", response_class=Response)
|
|
async def get_rss_feed(channel: str, token: str | None = None, limit: int = 20, output_type: str = 'rss'):
|
|
if Config["token"]:
|
|
if token != Config["token"]:
|
|
logger.error(f"Invalid token for RSS feed: {token}, expected: {Config['token']}")
|
|
raise HTTPException(status_code=403, detail="Invalid token")
|
|
else:
|
|
logger.info(f"Valid token for RSS feed: {token}")
|
|
|
|
while True:
|
|
try:
|
|
if output_type == 'rss':
|
|
rss_content = await generate_channel_rss(channel, client=client.client, limit=limit)
|
|
return Response(content=rss_content, media_type="application/xml")
|
|
elif output_type == 'html':
|
|
rss_content = await generate_channel_html(channel, client=client.client, limit=limit)
|
|
return Response(content=rss_content, media_type="text/html")
|
|
except ValueError as e:
|
|
error_message = f"Invalid parameters for RSS feed generation: {str(e)}"
|
|
logger.error(error_message)
|
|
raise HTTPException(status_code=400, detail=error_message) from e
|
|
except errors.FloodWait as e:
|
|
wait_time = e.value
|
|
random_additional_wait = random.uniform(0, wait_time * 1.5)
|
|
total_wait_time = wait_time + random_additional_wait
|
|
logger.warning(f"FloodWait detected for channel {channel}, waiting {total_wait_time:.1f} seconds (base: {wait_time}s, random: {random_additional_wait:.1f}s)")
|
|
await asyncio.sleep(total_wait_time)
|
|
logger.info(f"FloodWait finished for channel {channel}, retrying RSS feed generation")
|
|
continue
|
|
except Exception as e:
|
|
error_message = f"Failed to generate RSS feed for channel {channel}: {str(e)}"
|
|
logger.error(error_message)
|
|
raise HTTPException(status_code=500, detail=error_message) from e
|