feat($message): send warning email when detecting face

Author: johnnymillergh

home_guardian/message/email.py

@@ -73,10 +73,10 @@ def send_email(
         message: MIMEMultipart = build_message(
             subject, receiver, template_name, render_dict, picture_path
         )
-        logger.info(f"Sending email. receiver: {receiver}")
+        logger.debug(f"Sending email. receiver: {receiver}")
         try:
             smtp.sendmail(_sender, [receiver], message.as_string())
-            logger.info(
+            logger.debug(
                 f"Sent email successfully. Receiver: {receiver}, subject: {subject}, template_name: {template_name}"
             )
         except smtplib.SMTPException:

home_guardian/opencv/face_detection.py

@@ -8,11 +8,13 @@
 from home_guardian.common.debounce_throttle import throttle
 from home_guardian.configuration.thread_pool_configuration import executor
 from home_guardian.function_collection import get_data_dir, get_resources_dir
+from home_guardian.message.email import send_email
 from home_guardian.repository.detected_face_repository import save
+from home_guardian.repository.model.detected_face import DetectedFace
 
-detected_face_dir = f"{get_data_dir()}/detection"
-os.makedirs(detected_face_dir, exist_ok=True)
-logger.warning(f"Made the directory, detected_face_dir: {detected_face_dir}")
+_detected_face_dir = f"{get_data_dir()}/detection"
+os.makedirs(_detected_face_dir, exist_ok=True)
+logger.warning(f"Made the directory, _detected_face_dir: {_detected_face_dir}")
 
 
 def detect_and_take_photo() -> None:
@@ -36,7 +38,7 @@ def detect_and_take_photo() -> None:
     cv2.destroyAllWindows()
 
 
-@throttle(2)
+@throttle(3)
 def save_capture(frame) -> None:
     logger.debug(f"type of frame: {type(frame)}")
     executor.submit(async_save_capture, frame)
@@ -45,13 +47,26 @@ def save_capture(frame) -> None:
 @logger.catch
 def async_save_capture(frame) -> None:
     picture_path = (
-        f"{get_data_dir()}/detection"
+        f"{_detected_face_dir}"
         f"/detected_face_{datetime.datetime.now().__str__().replace(':', '_')}.jpeg"
     )
     cv2.imwrite(picture_path, frame)
-    detected_face = save(picture_path)
+    detected_face: DetectedFace = save(picture_path)
     logger.info(
         "Saved picture, picture_path: {}, detected_face: {}",
         picture_path,
         detected_face,
     )
+    render_dict: dict = {
+        "subject": "Detected face",
+        "content": "Attention, detected face, please take actions if necessary.",
+        "warning_time": datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
+        "content_id": f"detected_face_{detected_face}",
+    }
+    send_email(
+        render_dict["subject"],
+        "security_warning.html",
+        render_dict,
+        detected_face.picture_path,
+    )
+    logger.info("Sent `security_warning` successfully")