mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
77 lines
No EOL
3.1 KiB
Python
77 lines
No EOL
3.1 KiB
Python
from message_system_db_manager import DatabaseManager
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from message_system_db_model import MessageAttachment, Attachment, P2PMessage
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import json
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import hashlib
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import os
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class DatabaseManagerAttachments(DatabaseManager):
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def __init__(self, db_file=None):
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if not db_file:
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script_dir = os.path.dirname(os.path.abspath(__file__))
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db_path = os.path.join(script_dir, 'freedata-messages.db')
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db_file = 'sqlite:///' + db_path
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super().__init__(db_file)
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def add_attachment(self, session, message, attachment_data):
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hash_sha512 = hashlib.sha512(attachment_data['data'].encode()).hexdigest()
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existing_attachment = session.query(Attachment).filter_by(hash_sha512=hash_sha512).first()
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if not existing_attachment:
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attachment = Attachment(
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name=attachment_data['name'],
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data_type=attachment_data['type'],
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data=attachment_data['data'],
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checksum_crc32=attachment_data.get('checksum_crc32', ''),
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hash_sha512=hash_sha512
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)
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session.add(attachment)
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session.flush() # Ensure the attachment is persisted and has an ID
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self.log(f"Added attachment to database: {attachment.name}")
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else:
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attachment = existing_attachment
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self.log(f"Attachment {attachment.name} already exists in database")
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# Link the message and the attachment through MessageAttachment
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link = MessageAttachment(message=message, attachment=attachment)
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session.add(link)
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self.log(f"Linked message with attachment: {attachment.name}")
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return attachment
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def get_attachments_by_message_id(self, message_id):
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session = self.get_thread_scoped_session()
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try:
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# Fetch the message by its ID
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message = session.query(P2PMessage).filter_by(id=message_id).first()
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if message:
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# Navigate through the association to get attachments
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attachments = [ma.attachment.to_dict() for ma in message.message_attachments]
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return attachments
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else:
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return []
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except Exception as e:
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self.log(f"Error fetching attachments for message ID {message_id}: {e}", isWarning=True)
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return []
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finally:
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session.remove()
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def get_attachments_by_message_id_json(self, message_id):
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attachments = self.get_attachments_by_message_id(message_id)
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return json.dumps(attachments)
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def get_attachment_by_sha512(self, hash_sha512):
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session = self.get_thread_scoped_session()
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try:
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attachment = session.query(Attachment).filter_by(hash_sha512=hash_sha512).first()
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if attachment:
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return attachment.to_dict()
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else:
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self.log(f"No attachment found with SHA-512 hash: {hash_sha512}")
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return None
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except Exception as e:
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self.log(f"Error fetching attachment with SHA-512 hash {hash_sha512}: {e}", isWarning=True)
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return None
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finally:
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session.remove() |