Add additional db model metadata fields and model downloading function

app/database/models.py

@@ -1,5 +1,6 @@
 from sqlalchemy import (
     Column,
+    Integer,
     Text,
     DateTime,
 )
@@ -20,7 +21,7 @@ def to_dict(obj):
 
 class Model(Base):
     """
-    SQLAlchemy model representing a model file in the system.
+    sqlalchemy model representing a model file in the system.
 
     This class defines the database schema for storing information about model files,
     including their type, path, hash, and when they were added to the system.
@@ -28,7 +29,11 @@ class Model(Base):
     Attributes:
         type (Text): The type of the model, this is the name of the folder in the models folder (primary key)
         path (Text): The file path of the model relative to the type folder (primary key)
-        hash (Text): A sha256 hash of the model file
+        file_name (Text): The name of the model file
+        file_size (Integer): The size of the model file in bytes
+        hash (Text): A hash of the model file
+        hash_algorithm (Text): The algorithm used to generate the hash
+        source_url (Text): The URL of the model file
         date_added (DateTime): Timestamp of when the model was added to the system
     """
 
@@ -36,7 +41,11 @@ class Model(Base):
 
     type = Column(Text, primary_key=True)
     path = Column(Text, primary_key=True)
+    file_name = Column(Text)
+    file_size = Column(Integer)
     hash = Column(Text)
+    hash_algorithm = Column(Text)
+    source_url = Column(Text)
     date_added = Column(DateTime, server_default=func.now())
 
     def to_dict(self):