def create_documents(size):
# create document, add first page image and return document id
content_type = request.headers['Content-Type']
if content_type != "image/tiff" and content_type != 'image/jpeg' and content_type != 'application/pdf':
logging.error('Content-Type is not a valid image format')
return Response(status=415)
if 'type' in request.args:
logging.info("Form type specified")
form_type = request.args['type']
else:
# ocr form to detect application type
image_as_bytes = io.BytesIO(request.data)
form_type = recognise(image_as_bytes)
cursor = connect(cursor_factory=psycopg2.extras.DictCursor)
try:
cursor.execute('select max(document_id)+1 from documents')
next_doc_id = cursor.fetchone()
if next_doc_id[0] is None:
next_doc_id[0] = 1
cursor.execute("insert into documents (document_id, form_type, content_type, page, size, image) "
"values ( %(document_id)s, %(form_type)s, %(content_type)s, %(page)s, %(size)s, "
"%(image)s ) returning document_id",
{
"document_id": next_doc_id[0],
"form_type": form_type,
"content_type": content_type,
"page": "1",
"size": size,
"image": psycopg2.Binary(request.data)
})
res = cursor.fetchone()
document_id = res[0]
complete(cursor)
except:
rollback(cursor)
raise
return Response(json.dumps({"id": document_id, "form_type": form_type}), status=201, mimetype='application/json')
def change_image(doc_id, page_no, size):
# replace an existing page image
content_type = request.headers['Content-Type']
if content_type != "image/tiff" and content_type != 'image/jpeg' and content_type != 'application/pdf':
logging.error('Content-Type is not a valid image format')
return Response(status=415)
cursor = connect(cursor_factory=psycopg2.extras.DictCursor)
try:
if page_no == 1:
# ocr form to detect application type
bytes = io.BytesIO(request.data)
form_type = recognise(bytes)
# TODO: if form_type is different to the original type, need to consider updating any page 2,3 etc... TEST reallocate on multi-page form
else:
cursor.execute('select form_type from documents where document_id=%(doc_id)s and page = 1',
{"doc_id": doc_id})
row = cursor.fetchone()
if row is None:
return Response(status=404)
form_type = row['form_type']
cursor.execute("update documents set form_type=%(form_type)s, content_type=%(content_type)s, "
"size=%(size)s , image=%(image)s where document_id=%(doc_id)s and page=%(page)s",
{
"doc_id": doc_id,
"form_type": form_type,
"content_type": content_type,
"page": page_no,
"size": size,
"image": psycopg2.Binary(request.data)
})
rowcount = cursor.rowcount
complete(cursor)
except:
rollback(cursor)
raise
if rowcount == 0:
return Response(status=404)
return Response(status=200)
def scan_image(self, file):
filename = os.path.join(dir_, "ocr_test/" + file)
file_bytes = open(filename, 'rb')
return recognise(file_bytes)
def scan_image(self, file):
filename = os.path.join(dir_, "ocr_test/" + file)
file_bytes = open(filename, 'rb')
return recognise(file_bytes)
