#all the imports

file = load_image_file() # load file into memory

file_type, hash, size = analyze_image() #analyze the image including e.g virus scans, other malicious data content

meta_data = None #this will be metadata specific to the filetype

if is_animated(file_type):
    meta_data = get_video_meta_data(file) # returns a VideoMetaData model object
elif is_image(file_type):
    meta_data = get_image_meta_data(file) # returns a ImageMetaData model object
else:
    meta_data = get_generic_meta_data(file) #returns a generic MetaData object, which the other metadata objects inherit from

meta_data.save()

file_obj = File(
    hash_sha1=hash,
    file_size=size,
    file_meta=meta_data
)

file_obj.save()