Files
pyrogram-bridge/api_server.py
T

786 lines
35 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# flake8: noqa
# pylint: disable=broad-exception-raised, raise-missing-from, too-many-arguments, redefined-outer-name, wrong-import-position
# pylance: disable=reportMissingImports, reportMissingModuleSource, reportGeneralTypeIssues
# type: ignore
import logging
import os
import mimetypes
from typing import List
import json
from datetime import datetime
import time
from contextlib import asynccontextmanager
import random
import asyncio
import uvloop
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.background import BackgroundTask
import json_repair
import magic
from pyrogram import errors
from fastapi import FastAPI, HTTPException, Response, Request
from fastapi.responses import HTMLResponse, FileResponse
from telegram_client import TelegramClient
from config import get_settings
from rss_generator import generate_channel_rss, generate_channel_html
from post_parser import PostParser
from url_signer import verify_media_digest, generate_media_digest
# Define custom exception for zero-size files
class ZeroSizeFileError(Exception):
"""Custom exception for zero-size files found or downloaded."""
class RequestLoggingMiddleware(BaseHTTPMiddleware):
async def dispatch(self, request: Request, call_next):
# Log request details
logger.info(f"Request: {request.method} {request.url}")
logger.info(f"Headers: {dict(request.headers)}")
logger.info(f"Query params: {dict(request.query_params)}")
try:
response = await call_next(request)
# Log response details
logger.info(f"Response status: {response.status_code}")
return response
except Exception as e:
logger.error(f"Request processing error: {str(e)}")
raise
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
if not logger.handlers:
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s'))
logger.addHandler(handler)
client = TelegramClient()
Config = get_settings()
@asynccontextmanager
async def lifespan(_: FastAPI):
base_cache_dir = os.path.abspath("./data/cache")
os.makedirs(base_cache_dir, exist_ok=True) # Create cache directory
await client.start()
background_task = asyncio.create_task(cache_media_files()) # Start background task
yield
background_task.cancel() # Cleanup
try:
await background_task
except asyncio.CancelledError:
pass
await client.stop()
app = FastAPI(title="Pyrogram Bridge", lifespan=lifespan)
app.add_middleware(RequestLoggingMiddleware)
def mask_sensitive_value(input_str: str) -> str:
"""Mask middle part of sensitive value, showing only first and last 4 characters"""
if not input_str or len(input_str) < 8:
return '***'
visible_chars = 4
return f"{input_str[:visible_chars]}{'*' * (len(input_str) - visible_chars * 2)}{input_str[-visible_chars:]}"
if __name__ == "__main__":
import uvicorn
logger.info("Starting server with configuration:")
for key, value in Config.items():
if any(sensitive in key.lower() for sensitive in ['token', 'tg_api_id', 'tg_api_hash']):
logger.info(f" {key}: {mask_sensitive_value(str(value))}")
else:
logger.info(f" {key}: {value}")
# Log uvloop status
logger.info(" uvloop: enabled (asyncio speedup active)")
uvicorn.run(
"api_server:app",
host=Config["api_host"],
port=Config["api_port"],
reload=True,
loop="uvloop"
)
async def find_file_id_in_message(message, file_unique_id: str):
"""Find file_id by checking all possible media types in message"""
if message.media == "MessageMediaType.POLL":
logger.debug(f"Message {message.id} is a poll, skipping media search")
return None
media_found = []
if message.photo:
media_found.append(f"photo ({message.photo.file_unique_id})")
if message.photo.file_unique_id == file_unique_id:
return message.photo.file_id
if message.video:
media_found.append(f"video ({message.video.file_unique_id})")
if message.video.file_unique_id == file_unique_id:
return message.video.file_id
if message.animation:
media_found.append(f"animation ({message.animation.file_unique_id})")
if message.animation.file_unique_id == file_unique_id:
return message.animation.file_id
if message.video_note:
media_found.append(f"video_note ({message.video_note.file_unique_id})")
if message.video_note.file_unique_id == file_unique_id:
return message.video_note.file_id
if message.audio:
media_found.append(f"audio ({message.audio.file_unique_id})")
if message.audio.file_unique_id == file_unique_id:
return message.audio.file_id
if message.voice:
media_found.append(f"voice ({message.voice.file_unique_id})")
if message.voice.file_unique_id == file_unique_id:
return message.voice.file_id
if message.sticker:
media_found.append(f"sticker ({message.sticker.file_unique_id})")
if message.sticker.file_unique_id == file_unique_id:
return message.sticker.file_id
if message.web_page and message.web_page.photo:
media_found.append(f"web_page.photo ({message.web_page.photo.file_unique_id})")
if message.web_page.photo.file_unique_id == file_unique_id:
return message.web_page.photo.file_id
if message.document:
media_found.append(f"document ({message.document.file_unique_id})")
if message.document.file_unique_id == file_unique_id:
return message.document.file_id
# If we reached here, the file_unique_id was not found
logger.warning(f"Could not find media with file_unique_id '{file_unique_id}' in message {message.id} (channel: {message.chat.id}). Found media: {', '.join(media_found) or 'None'}")
return None
def delayed_delete_file(file_path: str, delay: int = 300):
"""
Delete temporary file after a delay to ensure complete file delivery.
Delay is set to 5 minutes by default.
"""
time.sleep(delay)
try:
os.remove(file_path)
logger.info(f"Deleted temporary file {file_path} after delay of {delay} seconds")
except Exception as e:
logger.error(f"Failed to delete temporary file {file_path}: {str(e)}")
async def prepare_file_response(file_path: str, delete_after: bool = False):
"""Prepare file response with proper headers"""
if not os.path.exists(file_path): raise HTTPException(status_code=404, detail="File not found")
try:
mime = magic.Magic(mime=True) # Try to determine MIME type using python-magic first
media_type = mime.from_file(file_path)
except Exception as e:
logger.warning(f"Failed to determine MIME type using python-magic: {str(e)}")
media_type = None
if not media_type: media_type, _ = mimetypes.guess_type(file_path) # Fallback to mimetypes if python-magic failed
if not media_type: media_type = "application/octet-stream" # Final fallback to octet-stream
logger.debug(f"Determined media type for {os.path.basename(file_path)}: {media_type}")
headers = {"Content-Disposition": f"inline; filename={os.path.basename(file_path)}"}
if delete_after:
return FileResponse(path=file_path, media_type=media_type, headers=headers, background=BackgroundTask(delayed_delete_file, file_path))
else:
return FileResponse(path=file_path, media_type=media_type, headers=headers)
async def download_media_file(channel: str, post_id: int, file_unique_id: str) -> str:
"""
Download media file from Telegram and save to cache
Returns path to downloaded file
"""
base_cache_dir = os.path.abspath("./data/cache")
# Create nested cache structure
channel_dir = os.path.join(base_cache_dir, str(channel))
post_dir = os.path.join(channel_dir, str(post_id))
os.makedirs(post_dir, exist_ok=True)
# Convert numeric channel ID to int if needed
channel_id = channel
if isinstance(channel, str) and channel.startswith('-100'):
channel_id = int(channel)
message = await client.client.get_messages(channel_id, post_id)
if message.media == "MessageMediaType.POLL":
return None, False
# Check if it is a video and if its size exceeds 100 MB
is_large_video = False
if message.video:
try:
if message.video.file_size > 100 * 1024 * 1024:
is_large_video = True
except Exception as e:
logger.error(f"Failed to get video file size for message {post_id}: {str(e)}")
if is_large_video:
# For large video, download without permanent caching; use a temporary file
temp_file_path = os.path.join(post_dir, f"temp_{file_unique_id}")
if os.path.exists(temp_file_path):
logger.info(f"Temporary file {temp_file_path} already exists, serving cached large video")
return temp_file_path, False
file_id = await find_file_id_in_message(message, file_unique_id)
if not file_id:
logger.error(f"Media with file_unique_id {file_unique_id} not found in message {post_id}")
raise HTTPException(status_code=404, detail="File not found in message")
logger.info(f"Downloading large video file {file_unique_id} to temporary path {temp_file_path}")
file_path = await client.client.download_media(file_id, file_name=temp_file_path)
logger.info(f"Downloaded large video file {file_unique_id} to temporary path {temp_file_path}")
return file_path, False
# Normal caching flow
cache_path = os.path.join(post_dir, file_unique_id)
if os.path.exists(cache_path):
# Check if the cached file is zero size
if os.path.getsize(cache_path) == 0:
logger.warning(f"zero_size_cache_found: Found zero-size cached file: {cache_path}. Deleting and attempting redownload.")
try:
os.remove(cache_path)
logger.info(f"Removed zero-size cached file: {cache_path}")
except OSError as e:
logger.error(f"cleanup_error: Failed to remove zero-size cached file {cache_path}: {e}")
# Do not raise error here, proceed to download below
else:
# File exists and is not zero size, update timestamp and return
logger.info(f"Found cached media file: {cache_path}")
# Update access timestamp in media_file_ids.json
file_ids_path = os.path.join(os.path.abspath("./data"), 'media_file_ids.json')
try:
if os.path.exists(file_ids_path):
with open(file_ids_path, 'r', encoding='utf-8') as f:
media_files = json.load(f)
for file_data in media_files:
if (file_data.get('channel') == str(channel) and # Ensure channel is string for comparison
file_data.get('post_id') == post_id and
file_data.get('file_unique_id') == file_unique_id):
file_data['added'] = datetime.now().timestamp()
break
with open(file_ids_path, 'w', encoding='utf-8') as f:
json.dump(media_files, f, ensure_ascii=False, indent=2)
except Exception as e:
logger.error(f"Failed to update timestamp for {channel}/{post_id}/{file_unique_id}: {str(e)}")
return cache_path, False
file_id = await find_file_id_in_message(message, file_unique_id)
if not file_id:
error_message = f"Media with file_unique_id {file_unique_id} not found in message {post_id} for channel {channel}"
logger.error(error_message)
# Attempt to remove the invalid entry from media_file_ids.json
file_ids_path = os.path.join(os.path.abspath("./data"), 'media_file_ids.json')
try:
if os.path.exists(file_ids_path):
with open(file_ids_path, 'r', encoding='utf-8') as f:
media_files = json.load(f)
initial_count = len(media_files)
media_files_updated = [
f_data for f_data in media_files
if not (
f_data.get('channel') == str(channel) and
f_data.get('post_id') == post_id and
f_data.get('file_unique_id') == file_unique_id
)
]
if len(media_files_updated) < initial_count:
with open(file_ids_path, 'w', encoding='utf-8') as f:
json.dump(media_files_updated, f, ensure_ascii=False, indent=2)
logger.info(f"Removed invalid entry for {channel}/{post_id}/{file_unique_id} from media_file_ids.json")
else:
logger.warning(f"Entry for {channel}/{post_id}/{file_unique_id} not found in media_file_ids.json for removal")
except Exception as e:
logger.error(f"Failed to remove entry for {channel}/{post_id}/{file_unique_id} from media_file_ids.json: {str(e)}")
raise HTTPException(status_code=404, detail="File not found in message")
file_path = await client.client.download_media(file_id, file_name=cache_path)
# Check if the downloaded file exists and has a size greater than zero
if not file_path or not os.path.exists(file_path) or os.path.getsize(file_path) == 0:
logger.error(f"download_failed_zero_size: Downloaded file {file_unique_id} for {channel}/{post_id} is zero size or missing.")
# Attempt to clean up the invalid file
if file_path and os.path.exists(file_path):
try:
os.remove(file_path)
logger.info(f"Removed zero-size file: {file_path}")
except OSError as e:
logger.error(f"cleanup_error: Failed to remove zero-size file {file_path}: {e}")
# Raise an error to indicate download failure
# Raise specific error
raise ZeroSizeFileError(f"Downloaded file {file_unique_id} for {channel}/{post_id} is zero size or missing after download attempt.")
logger.info(f"Downloaded media file {file_unique_id} to {cache_path}")
return file_path, False
async def remove_old_cached_files(media_files: list, cache_dir: str) -> tuple[list, int]:
"""
Remove files that haven't been accessed for more than 20 days
Returns tuple of (updated media files list, number of removed files)
"""
current_time = datetime.now().timestamp()
updated_media_files = []
files_removed = 0
for file_data in media_files:
try:
channel = file_data.get('channel')
post_id = file_data.get('post_id')
file_unique_id = file_data.get('file_unique_id')
if not all([channel, post_id, file_unique_id]):
continue
last_access_time = file_data.get('added', 0)
days_since_access = (current_time - last_access_time) / (24 * 3600)
if days_since_access > 20:
cache_path = os.path.join(cache_dir, str(channel), str(post_id), file_unique_id)
if os.path.exists(cache_path):
try:
os.remove(cache_path)
# try to remove empty parent directories
post_dir = os.path.dirname(cache_path)
channel_dir = os.path.dirname(post_dir)
if not os.listdir(post_dir):
os.rmdir(post_dir)
if not os.listdir(channel_dir):
os.rmdir(channel_dir)
files_removed += 1
logger.info(f"Removed old cached file: {cache_path}, last access {days_since_access:.1f} days ago")
except Exception as e:
logger.error(f"Failed to remove cached file {cache_path}: {str(e)}")
updated_media_files.append(file_data)
continue
updated_media_files.append(file_data)
except Exception as e:
logger.error(f"Error processing cache entry {file_data}: {str(e)}")
continue
# Additionally, remove temporary files with prefix "temp_" if they are older than a threshold (1 hour)
temp_threshold = 3600 # 1 hour in seconds
for root, _, files in os.walk(cache_dir):
for file in files:
if file.startswith("temp_"):
file_path = os.path.join(root, file)
try:
file_mod_time = os.path.getmtime(file_path)
if time.time() - file_mod_time > temp_threshold:
# Get channel/post/file_id from path
rel_path = os.path.relpath(os.path.dirname(file_path), cache_dir)
channel, post_id = rel_path.split(os.sep)
file_unique_id = file[5:] # Remove 'temp_' prefix
# Remove file
os.remove(file_path)
files_removed += 1
logger.info(f"Removed temporary file: {file_path}")
# Also remove entry from media_file_ids.json if exists
updated_media_files = [
f for f in updated_media_files
if not (f.get('channel') == channel and
f.get('post_id') == int(post_id) and
f.get('file_unique_id') == file_unique_id)
]
except Exception as e:
logger.error(f"Failed to remove temporary file {file_path}: {str(e)}")
return updated_media_files, files_removed
async def download_new_files(media_files: list, cache_dir: str):
"""
Download files that are not in cache yet
"""
if not media_files:
logger.info("No media files found for download")
return
files_to_download = 0
for file_data in media_files:
try:
channel = file_data.get('channel')
post_id = file_data.get('post_id')
file_unique_id = file_data.get('file_unique_id')
if not all([channel, post_id, file_unique_id]):
logger.error(f"Invalid file data: {file_data}")
continue
channel_dir = os.path.join(cache_dir, str(channel))
post_dir = os.path.join(channel_dir, str(post_id))
os.makedirs(post_dir, exist_ok=True)
# Skip if temp file exists (large videos)
temp_path = os.path.join(post_dir, f"temp_{file_unique_id}")
if os.path.exists(temp_path):
continue
cache_path = os.path.join(post_dir, file_unique_id)
if not os.path.exists(cache_path):
files_to_download += 1
logger.debug(f"Background download started for {channel}/{post_id}/{file_unique_id}")
await download_media_file(channel, post_id, file_unique_id)
await asyncio.sleep(1) # Delay between downloads
except Exception as e:
logger.error(f"Background download failed for {channel}/{post_id}/{file_unique_id}: {str(e)}")
continue
if files_to_download == 0:
logger.info("All media files are already in cache")
def fix_corrupted_json(file_path: str) -> list:
"""
Attempt to fix corrupted JSON file using json-repair library
Returns list of valid entries
"""
try:
with open(file_path, 'r', encoding='utf-8') as f:
content = f.read()
# Try to repair and parse the JSON
fixed_data = json_repair.loads(content)
# Validate entries
valid_entries = []
for entry in fixed_data:
if isinstance(entry, dict) and all(key in entry for key in ['channel', 'post_id', 'file_unique_id']):
valid_entries.append(entry)
logger.info(f"Fixed JSON file: {file_path}, found {len(valid_entries)} valid entries")
return valid_entries
except Exception as e:
logger.error(f"Failed to fix JSON file {file_path}: {str(e)}")
return []
async def cache_media_files():
"""Background task for cache management: removes old files and downloads new ones"""
delay = 60
while True:
try:
file_path = os.path.join(os.path.abspath("./data"), 'media_file_ids.json')
if not os.path.exists(file_path):
await asyncio.sleep(delay)
continue
try:
with open(file_path, 'r', encoding='utf-8') as f:
media_files = json.load(f)
except json.JSONDecodeError:
logger.error(f"JSON decode error in {file_path}, attempting to fix")
media_files = fix_corrupted_json(file_path)
if media_files:
with open(file_path, 'w', encoding='utf-8') as f:
json.dump(media_files, f, ensure_ascii=False, indent=2)
else:
logger.error("Failed to fix JSON file, skipping cache update")
await asyncio.sleep(delay)
continue
cache_dir = os.path.abspath("./data/cache")
updated_media_files, files_removed = await remove_old_cached_files(media_files, cache_dir)
if files_removed > 0:
try:
with open(file_path, 'w', encoding='utf-8') as f:
json.dump(updated_media_files, f, ensure_ascii=False, indent=2)
logger.info(f"Removed {files_removed} old files from cache")
except Exception as e:
logger.error(f"Failed to update media_file_ids.json: {str(e)}")
await download_new_files(updated_media_files, cache_dir)
await asyncio.sleep(delay) # Check every delay seconds
except Exception as e:
logger.error(f"Cache media files error: {str(e)}")
await asyncio.sleep(delay)
def calculate_cache_stats():
"""
Calculate cache statistics including file count, total size in MB, and time difference in days.
Returns a dictionary with keys: 'cache_files_count', 'cache_total_size_mb', 'cache_time_diff_days', 'channels'.
"""
base_cache_dir = os.path.abspath("./data/cache")
cache_files_count = 0
cache_total_size_bytes = 0
channels_stats = {}
if os.path.isdir(base_cache_dir):
# Recursively walk through all subdirectories
for root, _, files in os.walk(base_cache_dir):
for f in files:
file_path = os.path.join(root, f)
file_size = os.path.getsize(file_path)
cache_files_count += 1
cache_total_size_bytes += file_size
# Calculate per-channel statistics
rel_path = os.path.relpath(root, base_cache_dir)
channel = rel_path.split(os.sep, maxsplit=1)[0] # First directory is channel
if channel not in channels_stats:
channels_stats[channel] = {
'files_count': 0,
'size_mb': 0
}
channels_stats[channel]['files_count'] += 1
channels_stats[channel]['size_mb'] = round(
channels_stats[channel]['size_mb'] + (file_size / (1024 * 1024)), 2
)
cache_total_size_mb = round(cache_total_size_bytes / (1024 * 1024), 2) # rounded size in MB
else:
cache_files_count = 0
cache_total_size_mb = 0
media_file_ids_path = os.path.join(os.path.abspath("./data"), "media_file_ids.json")
cache_times = []
if os.path.exists(media_file_ids_path):
try:
with open(media_file_ids_path, "r", encoding="utf-8") as f:
media_files = json.load(f)
for entry in media_files:
if "added" in entry:
cache_times.append(entry["added"])
except Exception as e:
logger.error(f"Error reading media_file_ids.json: {str(e)}")
if cache_times:
cache_time_diff_seconds = max(cache_times) - min(cache_times)
cache_time_diff_days = round(cache_time_diff_seconds / 86400, 2) # rounded to two decimals
else:
cache_time_diff_days = 0
return {
"cache_files_count": cache_files_count,
"cache_total_size_mb": cache_total_size_mb,
"cache_time_diff_days": cache_time_diff_days,
"channels": channels_stats
}
@app.get("/html/{channel}/{post_id}", response_class=HTMLResponse)
@app.get("/post/html/{channel}/{post_id}", response_class=HTMLResponse)
@app.get("/html/{channel}/{post_id}/{token}", response_class=HTMLResponse)
@app.get("/post/html/{channel}/{post_id}/{token}", response_class=HTMLResponse)
async def get_post_html(channel: str, post_id: int, token: str | None = None, debug: bool = False, request: Request = None):
if Config["token"] and request and request.client.host not in ["127.0.0.1", "localhost"]:
if token != Config["token"]:
logger.error(f"Invalid token for HTML post: {token}, expected: {Config['token']}")
raise HTTPException(status_code=403, detail="Invalid token")
else:
logger.info(f"Valid token for HTML post: {token}")
try:
parser = PostParser(client.client)
html_content = await parser.get_post(channel, post_id, 'html', debug)
if not html_content:
raise HTTPException(status_code=404, detail="Post not found")
return html_content
except Exception as e:
error_message = f"Failed to get HTML post for channel {channel}, post_id {post_id}: {str(e)}"
logger.error(error_message)
raise HTTPException(status_code=500, detail=error_message) from e
@app.get("/json/{channel}/{post_id}")
@app.get("/post/json/{channel}/{post_id}")
@app.get("/json/{channel}/{post_id}/{token}")
@app.get("/post/json/{channel}/{post_id}/{token}")
async def get_post(channel: str, post_id: int, token: str | None = None, debug: bool = False, request: Request = None):
if Config["token"] and request and request.client.host not in ["127.0.0.1", "localhost"]:
if token != Config["token"]:
logger.error(f"Invalid token for JSON post: {token}, expected: {Config['token']}")
raise HTTPException(status_code=403, detail="Invalid token")
else:
logger.info(f"Valid token for JSON post: {token}")
try:
parser = PostParser(client.client)
json_content = await parser.get_post(channel, post_id, 'json', debug)
if not json_content:
raise HTTPException(status_code=404, detail="Post not found")
return json_content
except Exception as e:
error_message = f"Failed to get JSON post for channel {channel}, post_id {post_id}: {str(e)}"
logger.error(error_message)
raise HTTPException(status_code=500, detail=error_message) from e
@app.get("/health")
@app.get("/health/{token}")
async def health_check(token: str | None = None, request: Request = None):
if Config["token"] and request and request.client.host not in ["127.0.0.1", "localhost"]:
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()
config_info = {}
for config_key, config_value in Config.items():
if any(sensitive in config_key.lower() for sensitive in ['token', 'tg_api_id', 'tg_api_hash']):
config_info[config_key] = mask_sensitive_value(str(config_value)) if config_value else None
else:
config_info[config_key] = config_value
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,
"config": config_info,
**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):
expected_digest = generate_media_digest(url)
logger.error(f"Invalid digest for media {url}: {digest}, expected: {expected_digest}")
raise HTTPException(status_code=403, detail="Invalid URL signature")
else:
logger.info(f"Valid digest for media {url}: {digest}")
# Convert numeric channel ID to int if needed
channel_id = channel
if isinstance(channel, str) and channel.startswith('-100'):
channel_id = int(channel)
try: # Wrap the download and prepare call
file_path, delete_after = await download_media_file(channel_id, post_id, file_unique_id)
return await prepare_file_response(file_path, delete_after=delete_after)
except ZeroSizeFileError as e: # Catch zero-size file errors
logger.warning(f"zero_size_file_encountered: {str(e)}. Instructing client to retry.")
return Response(
status_code=503, # Service Unavailable
content="File processing resulted in zero size, please try again in 10 seconds.",
headers={"Retry-After": "10"}
)
except HTTPException:
raise
except errors.RPCError as e:
logger.error(f"Media request RPC error for {channel}/{post_id}/{file_unique_id}: {type(e).__name__} - {str(e)}")
raise HTTPException(status_code=404, detail="File not found in Telegram") from e
except ZeroSizeFileError as e: # Catch zero-size file errors FROM DOWNLOAD
error_message = f"Failed to obtain valid media file for {channel}/{post_id}/{file_unique_id} after download attempt: {str(e)}"
logger.error(error_message)
raise HTTPException(status_code=500, detail=error_message) from e
except Exception as e:
error_message = f"Failed to get media for {channel}/{post_id}/{file_unique_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 = 50,
output_type: str = 'rss',
exclude_flags: str | None = None,
exclude_text: str | None = None,
merge_seconds: int = 5,
request: Request = None
):
if Config["token"] and request and request.client.host not in ["127.0.0.1", "localhost"]:
if token != Config["token"]:
logger.error(f"invalid_token_error: token {token}, expected {Config['token']}")
raise HTTPException(status_code=403, detail="Invalid token")
while True:
try:
if output_type == 'rss':
rss_content = await generate_channel_rss(channel,
client=client.client,
limit=limit,
exclude_flags=exclude_flags,
exclude_text=exclude_text,
merge_seconds=merge_seconds)
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,
exclude_flags=exclude_flags,
exclude_text=exclude_text,
merge_seconds=merge_seconds)
return Response(content=rss_content, media_type="text/html")
except ValueError as e:
error_message = f"invalid_parameters_error: {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 * 2.5)
total_wait_time = wait_time + random_additional_wait
if total_wait_time > 190: total_wait_time = 190
logger.warning(f"flood_wait_error: channel {channel}, retry after {total_wait_time:.1f} seconds (base: {wait_time}s, random: {random_additional_wait:.1f}s)")
return Response(
status_code=429,
headers={"Retry-After": str(int(total_wait_time))},
content="Too many requests, please try again later"
)
except Exception as e:
error_message = f"rss_generation_error: channel {channel}, error {str(e)}"
logger.error(error_message)
raise HTTPException(status_code=500, detail=error_message) from e
@app.get("/flags", response_model=List[str])
@app.get("/flags/{token}", response_model=List[str])
async def get_available_flags(token: str | None = None, request: Request = None):
"""Returns a list of all possible flags that can be assigned to posts."""
if Config["token"] and request and request.client.host not in ["127.0.0.1", "localhost"]:
if token != Config["token"]:
logger.error(f"Invalid token for flags endpoint: {token}, expected: {Config['token']}")
raise HTTPException(status_code=403, detail="Invalid token")
else:
logger.info(f"Valid token for flags endpoint: {token}")
try:
flags = PostParser.get_all_possible_flags()
return flags
except Exception as e:
error_message = f"Failed to get flags list: {str(e)}"
logger.error(error_message)
raise HTTPException(status_code=500, detail=error_message) from e