load image either from json or form data

deepface/api/src/modules/core/routes.py

@@ -1,31 +1,86 @@
+# built-in dependencies
+from typing import Union
+
+# 3rd party dependencies
 from flask import Blueprint, request
+import numpy as np
+
+# project dependencies
 from deepface import DeepFace
 from deepface.api.src.modules.core import service
+from deepface.commons import image_utils
 from deepface.commons.logger import Logger
 
 logger = Logger()
 
 blueprint = Blueprint("routes", __name__)
 
+# pylint: disable=no-else-return, broad-except
+
 
 @blueprint.route("/")
 def home():
     return f"<h1>Welcome to DeepFace API v{DeepFace.__version__}!</h1>"
 
 
+def extract_image_from_request(img_key: str) -> Union[str, np.ndarray]:
+    """
+    Extracts an image from the request either from json or a multipart/form-data file.
+
+    Args:
+        img_key (str): The key used to retrieve the image data
+            from the request (e.g., 'img1').
+
+    Returns:
+        img (str or np.ndarray): Given image detail (base64 encoded string, image path or url)
+            or the decoded image as a numpy array.
+    """
+
+    # Check if the request is multipart/form-data (file input)
+    if request.files:
+        # request.files is instance of werkzeug.datastructures.ImmutableMultiDict
+        # file is instance of werkzeug.datastructures.FileStorage
+        file = request.files.get(img_key)
+
+        if file is None:
+            raise ValueError(f"Request form data doesn't have {img_key}")
+
+        if file.filename == "":
+            raise ValueError(f"No file uploaded for '{img_key}'")
+
+        img = image_utils.load_image_from_file_storage(file)
+
+        return img
+    # Check if the request is coming as base64, file path or url from json or form data
+    elif request.is_json or request.form:
+        input_args = request.get_json() or request.form.to_dict()
+
+        if input_args is None:
+            raise ValueError("empty input set passed")
+
+        # this can be base64 encoded image, and image path or url
+        img = input_args.get(img_key)
+
+        if not img:
+            raise ValueError(f"'{img_key}' not found in either json or form data request")
+
+        return img
+
+    # If neither JSON nor file input is present
+    raise ValueError(f"'{img_key}' not found in request in either json or form data")
+
+
 @blueprint.route("/represent", methods=["POST"])
 def represent():
-    input_args = request.get_json()
+    input_args = request.get_json() or request.form.to_dict()
 
-    if input_args is None:
-        return {"message": "empty input set passed"}
-
-    img_path = input_args.get("img") or input_args.get("img_path")
-    if img_path is None:
-        return {"message": "you must pass img_path input"}
+    try:
+        img = extract_image_from_request("img")
+    except Exception as err:
+        return {"exception": str(err)}, 400
 
     obj = service.represent(
-        img_path=img_path,
+        img_path=img,
         model_name=input_args.get("model_name", "VGG-Face"),
         detector_backend=input_args.get("detector_backend", "opencv"),
         enforce_detection=input_args.get("enforce_detection", True),
@@ -41,23 +96,21 @@ def represent():
 
 @blueprint.route("/verify", methods=["POST"])
 def verify():
-    input_args = request.get_json()
+    input_args = request.get_json() or request.form.to_dict()
 
-    if input_args is None:
-        return {"message": "empty input set passed"}
+    try:
+        img1 = extract_image_from_request("img1")
+    except Exception as err:
+        return {"exception": str(err)}, 400
 
-    img1_path = input_args.get("img1") or input_args.get("img1_path")
-    img2_path = input_args.get("img2") or input_args.get("img2_path")
-
-    if img1_path is None:
-        return {"message": "you must pass img1_path input"}
-
-    if img2_path is None:
-        return {"message": "you must pass img2_path input"}
+    try:
+        img2 = extract_image_from_request("img2")
+    except Exception as err:
+        return {"exception": str(err)}, 400
 
     verification = service.verify(
-        img1_path=img1_path,
-        img2_path=img2_path,
+        img1_path=img1,
+        img2_path=img2,
         model_name=input_args.get("model_name", "VGG-Face"),
         detector_backend=input_args.get("detector_backend", "opencv"),
         distance_metric=input_args.get("distance_metric", "cosine"),
@@ -73,18 +126,31 @@ def verify():
 
 @blueprint.route("/analyze", methods=["POST"])
 def analyze():
-    input_args = request.get_json()
+    input_args = request.get_json() or request.form.to_dict()
 
-    if input_args is None:
-        return {"message": "empty input set passed"}
+    try:
+        img = extract_image_from_request("img")
+    except Exception as err:
+        return {"exception": str(err)}, 400
 
-    img_path = input_args.get("img") or input_args.get("img_path")
-    if img_path is None:
-        return {"message": "you must pass img_path input"}
+    actions = input_args.get("actions", ["age", "gender", "emotion", "race"])
+    # actions is the only argument instance of list or tuple
+    # if request is form data, input args can either be text or file
+    if isinstance(actions, str):
+        actions = (
+            actions.replace("[", "")
+            .replace("]", "")
+            .replace("(", "")
+            .replace(")", "")
+            .replace('"', "")
+            .replace("'", "")
+            .replace(" ", "")
+            .split(",")
+        )
 
     demographies = service.analyze(
-        img_path=img_path,
-        actions=input_args.get("actions", ["age", "gender", "emotion", "race"]),
+        img_path=img,
+        actions=actions,
         detector_backend=input_args.get("detector_backend", "opencv"),
         enforce_detection=input_args.get("enforce_detection", True),
         align=input_args.get("align", True),