From e0bf3836fd5080aec30c62b23c5f9af4f9ce2bca Mon Sep 17 00:00:00 2001
From: 5okin <cse45517@uniwa.gr>
Date: Sun, 24 Jan 2021 17:33:14 +0000
Subject: [PATCH] Upload files to 'server/app/services'

---
 server/app/services/data_process.py    | 28 ++++++++++++++++++
 server/app/services/database_handle.py | 28 ++++++++++++++++++
 server/app/services/weather_mail.py    | 40 ++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 server/app/services/data_process.py
 create mode 100644 server/app/services/database_handle.py
 create mode 100644 server/app/services/weather_mail.py

diff --git a/server/app/services/data_process.py b/server/app/services/data_process.py
new file mode 100644
index 0000000..f1d9b02
--- /dev/null
+++ b/server/app/services/data_process.py
@@ -0,0 +1,28 @@
+import time
+from datetime import datetime
+from .weather_mail import send_mail
+
+
+def percentage(old, new, operator, percent):
+    '''Check if numbers are within range'''
+
+    if operator == '+':
+        return bool(round((old + old * percent / 100.0), 1) == new)
+    elif operator == '-':
+        return bool(round((old - old * percent / 100.0)) == new)
+
+
+def process(data):
+    '''Check incoming data for +40% temp and -50% ground humidity'''
+
+    if len(data) > 0:
+        latest_measurement = data[len(data)-1]
+
+        for measurement in data:
+            if measurement != data[len(data)-1]:
+                tdelta = datetime.strptime(latest_measurement['time'], '%H:%M:%S') - datetime.strptime(measurement['time'], '%H:%M:%S')
+                if tdelta.seconds < 300:
+                    if percentage(measurement['temperature'], latest_measurement['temperature'], '+', 40) and percentage(measurement['air-humidity'], latest_measurement['air-humidity'], '-', 50):
+                        send_mail(measurement['temperature'], latest_measurement['temperature'], measurement['air-humidity'], latest_measurement['air-humidity'])
+                else:
+                    data.remove(measurement)
diff --git a/server/app/services/database_handle.py b/server/app/services/database_handle.py
new file mode 100644
index 0000000..ccc7d8c
--- /dev/null
+++ b/server/app/services/database_handle.py
@@ -0,0 +1,28 @@
+import json
+import os
+from flask_pymongo import PyMongo
+from influxdb import InfluxDBClient
+from app import app
+
+
+#Connect to db using environment variables
+CLIENT = InfluxDBClient('influxdb', 8086, os.environ['INFLUXDB_USERNAME'], os.environ['INFLUXDB_PASSWORD'], os.environ['INFLUXDB_DATABASE'])
+
+
+def send_data(data):
+    '''Send a single json object to the database'''
+
+    data_to_send = []
+    add_db_info = {}
+
+    add_db_info['measurement'] = "Rpi_data"
+    add_db_info['fields'] = data
+
+    data_to_send.append(add_db_info)
+
+    print(f'Send to DB: {data_to_send}', flush=True)
+
+    try:
+        CLIENT.write_points(data_to_send)
+    except:
+        print("Failed to send to database")
diff --git a/server/app/services/weather_mail.py b/server/app/services/weather_mail.py
new file mode 100644
index 0000000..70a7ba0
--- /dev/null
+++ b/server/app/services/weather_mail.py
@@ -0,0 +1,40 @@
+import os
+import smtplib
+from email.message import EmailMessage
+
+
+EMAIL_ADDRESS = os.environ['MAILUSER']
+EMAIL_PASSWORD= os.environ['MAILPASS']
+
+def send_mail(measurment_temp, latest_measurment_temp, measurment_hum, latest_measurment_hum):
+    '''Handles email compose and connection to SMTP'''
+
+    print(f"Email send: {measurment_temp} and {latest_measurment_temp}", flush=True)
+
+    message = f"""The temperature went from {measurment_temp} to {latest_measurment_temp}
+                in five minutes, thats a 40% increase! And the air humidity went from 
+                {measurment_hum} to {latest_measurment_hum} in five minutes, thats a 50% 
+                drop!
+                """
+
+    msg = EmailMessage()
+    msg['Subject'] = 'Weather Staion Report'
+    msg['From'] = EMAIL_ADDRESS
+    msg['To'] = 'nkoutsolelos@gmail.com'
+
+    msg.set_content('This email was send automaticly from the weather server')
+
+    msg.add_alternative(f"""\
+    <!DOCTYPE html>
+    <html>
+        <body>
+            <h1 style="color:SlateGray;">Weather is off the charts !!!!</h1>
+            <p>{message}</p>
+        </body>
+    </html>
+    """, subtype='html')
+
+
+    with smtplib.SMTP_SSL('smtp.gmail.com', 465) as smtp:
+        smtp.login(EMAIL_ADDRESS, EMAIL_PASSWORD)
+        smtp.send_message(msg)