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feat(TelegramAdapter): improve file handling and metadata extraction for messages

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shiyu
2025-09-26 19:40:58 +08:00
parent f3d9220569
commit 738f3c9718
1 changed files with 50 additions and 32 deletions
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82
services/adapters/telegram.py
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@@ -74,33 +74,32 @@ class TelegramAdapter:
for message in messages:
if not message:
continue
media = message.document or message.video or message.photo
if not media:
continue
filename = None
size = 0
if message.photo:
photo_size = message.photo.sizes[-1]
size = photo_size.size if hasattr(photo_size, 'size') else 0
filename = f"photo_{message.id}.jpg"
file_meta = message.file
if not file_meta:
continue
elif message.document or message.video:
size = media.size
if hasattr(media, 'attributes'):
for attr in media.attributes:
if hasattr(attr, 'file_name') and attr.file_name:
filename = attr.file_name
break
filename = file_meta.name
if not filename:
if message.text and '.' in message.text and len(message.text) < 256 and '\n' not in message.text:
filename = message.text
if not filename:
filename = f"unknown_{message.id}"
else:
filename = f"unknown_{message.id}"
size = file_meta.size
if size is None:
# 兼容缺失 size 的情况
if hasattr(media, "size") and media.size is not None:
size = media.size
elif message.photo and getattr(message.photo, "sizes", None):
photo_size = message.photo.sizes[-1]
size = getattr(photo_size, "size", 0) or 0
else:
size = 0
entries.append({
"name": f"{message.id}_{filename}",
@@ -246,13 +245,27 @@ class TelegramAdapter:
if not message or not media:
raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
if message.photo:
photo_size = media.sizes[-1]
file_size = photo_size.size if hasattr(photo_size, 'size') else 0
mime_type = "image/jpeg"
else:
file_size = media.size
mime_type = media.mime_type or "application/octet-stream"
file_meta = message.file
file_size = file_meta.size if file_meta and file_meta.size is not None else None
if file_size is None:
if hasattr(media, "size") and media.size is not None:
file_size = media.size
elif message.photo and getattr(message.photo, "sizes", None):
photo_size = message.photo.sizes[-1]
file_size = getattr(photo_size, "size", 0) or 0
else:
file_size = 0
mime_type = None
if file_meta and getattr(file_meta, "mime_type", None):
mime_type = file_meta.mime_type
if not mime_type:
if hasattr(media, "mime_type") and media.mime_type:
mime_type = media.mime_type
elif message.photo:
mime_type = "image/jpeg"
else:
mime_type = "application/octet-stream"
start = 0
end = file_size - 1
@@ -321,11 +334,16 @@ class TelegramAdapter:
if not message or not media:
raise FileNotFoundError(f"在频道 {self.chat_id} 中未找到消息ID为 {message_id} 的文件")
if message.photo:
photo_size = media.sizes[-1]
size = photo_size.size if hasattr(photo_size, 'size') else 0
else:
size = media.size
file_meta = message.file
size = file_meta.size if file_meta and file_meta.size is not None else None
if size is None:
if hasattr(media, "size") and media.size is not None:
size = media.size
elif message.photo and getattr(message.photo, "sizes", None):
photo_size = message.photo.sizes[-1]
size = getattr(photo_size, "size", 0) or 0
else:
size = 0
return {
"name": rel,
@@ -339,4 +357,4 @@ class TelegramAdapter:
await client.disconnect()
def ADAPTER_FACTORY(rec: StorageAdapter) -> TelegramAdapter:
return TelegramAdapter(rec)
return TelegramAdapter(rec)