From 52ca4fb40c6c90a4a3e83f239d96625ebfce85dc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miro=20Kri=C5=A1tofi=C4=87?= <miro.kristof@gmail.com>
Date: Sun, 5 Jan 2020 08:39:07 +0100
Subject: [PATCH] #12 Started implementing email notifications

EmailSender class was created which sends the image to the given receiver. The class constructor receives the camera number and data from the camera in byte format, saves the image to temp folder and sends an email with the image as attachment.
Until a better solution is found, the email is sent from newly created gmail account and through gmail's SMTP server.
---
 server/app.py                 |  6 ++++
 server/modules/EmailSender.py | 55 +++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 server/modules/EmailSender.py

diff --git a/server/app.py b/server/app.py
index bbf187e..f594251 100644
--- a/server/app.py
+++ b/server/app.py
@@ -1,5 +1,6 @@
 from flask import Flask, render_template, Response, jsonify
 from modules.Detector import Detector
+from modules.EmailSender import EmailSender
 import socket, sys, signal
 
 # FLASK CONFIG
@@ -36,10 +37,15 @@ def receive_signal(signal_number, frame):
 
 def rec(sock, camera_num):
     global face_detected
+    email_sent = False
     while True:
         data, addr = sock.recvfrom(65535)
         if(detector.find_faces(data)):
             face_detected[camera_num] = True
+            if(email_sent == False):
+                sender = EmailSender(camera_num, data)
+                sender.send_email('kristoficmiro0@gmail.com')
+                email_sent = True
         else:
             face_detected[camera_num] = False
         yield (b'--frame\r\n'
diff --git a/server/modules/EmailSender.py b/server/modules/EmailSender.py
new file mode 100644
index 0000000..41116e8
--- /dev/null
+++ b/server/modules/EmailSender.py
@@ -0,0 +1,55 @@
+import cv2
+import numpy as np
+import smtplib
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from email.mime.base import MIMEBase
+from email import encoders
+from datetime import datetime
+
+class EmailSender(object):
+
+    def __init__(self, camera_num, img_data):
+        self.data = img_data
+        self.camera_num = camera_num
+
+    def send_email(self, receiver_mail):
+        filename = 'face.jpg'
+        path = '/tmp/' + filename
+        sender = "sissurvailance@gmail.com"
+        receiver = receiver_mail
+        nparr = np.fromstring(self.data, np.uint8)
+        img_np = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
+        cv2.imwrite(path, img_np)
+
+        now = datetime.now()
+        date_and_time = now.strftime("%d.%m.%Y. %H:%M:%S")
+
+        msg = MIMEMultipart()
+        msg['From'] = sender
+        msg['To'] = receiver
+        msg['Subject'] = "Face detected"
+        body = f"At {date_and_time}, camera #{self.camera_num} detected a face. Find attached image with the detected face."
+        msg.attach(MIMEText(body, 'plain'))
+
+        attachment = open("/tmp/face.jpg", "rb")
+        p = MIMEBase('application', 'octet-stream')
+        p.set_payload((attachment).read())
+        encoders.encode_base64(p)
+        p.add_header('Content-Disposition', "attachment; filename= %s" % filename)
+        msg.attach(p)
+
+        username = "sissurvailance@gmail.com"
+        password = "fw#22xCz"
+
+        try:
+            smtpObj = smtplib.SMTP('smtp.gmail.com', 587)
+            smtpObj.ehlo()
+            smtpObj.starttls()
+            smtpObj.login(username, password)
+            text = msg.as_string()
+            smtpObj.sendmail(sender, receiver, text)
+            smtpObj.quit()
+            print(f"Email sent to {receiver}.")
+        except Exception as e:
+            print("Unable to send the email.")