# -*- coding: utf-8 -*-
# This Email class is for an agent wishing to send an email to any mail server
import smtplib  # simple mail transfer protocol library
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import datetime

class EmailService:
    # method1: GET a model number of a device by XML read
    def sendEmail(self, fromaddr, recipients, username, password, subject, text, mailServer):
        try:
            # agent snippet to send notification to a building operator
            self.fromaddr = fromaddr
            self.recipients = recipients
            self.username = username
            self.password = password
            self.msg = MIMEMultipart()
            self.msg['From'] = self.fromaddr
            self.msg['To'] = ",".join(self.recipients)
            self.msg['Subject'] = subject
            self.text = text
            self.msg.attach(MIMEText(self.text))
            self.server = smtplib.SMTP(mailServer)
            self.server.ehlo()
            self.server.starttls()
            self.server.ehlo()
            self.server.login(self.username, self.password)
            self.server.sendmail(self.fromaddr, self.recipients, self.msg.as_string())
            self.server.quit()
            print("Email is sent successfully")
        except:
            EmailService
            print('Error: Connection with SMTP server failed')

# This main method will not be executed when this class is used as a module
def main():
    # create an object with initialized data from DeviceDiscovery Agent
    # requirements for instantiation1. model, 2.type, 3.api, 4. address
    params = {"grid_energy_import": 10, "grid_electricity_bill": 40, "grid_avg_power":300, "solar_energy_generation": 20,
              "solar_electricity_bill": 80, "solar_avg_power": 1200, "load_energy_consumption": 30,
              "load_electricity_bill": 120, "load_avg_power": 1300}
    sendText = "Dear Sisaengtham School,\n " \
               "\n" \
               "\tHere is your energy report for {date},\n" \
               "\n" \
               "\t1. Grid: Energy Imported={grid_energy_import} kWh, Electricity Bill={grid_electricity_bill} Baht, Average Power={grid_avg_power} W\n" \
               "\t2. Solar: Energy Generated={solar_energy_generation} kWh, Bill Saving from Solar={solar_electricity_bill} Baht, Average Power={solar_avg_power} W\n"\
               "\t3. Load: Energy Consumed={load_energy_consumption} kWh, Actual Bill if Without Solar={load_electricity_bill} Baht, Average Power={load_avg_power} W\n"\
               "\n" \
               "Best Regard,\n" \
               "PEA HiVE Development Team,\n" \
               "email: peahive@gmail.com,\n" \
               "FB: facebook.som/peahiveplatform,\n" \
               "Line: @peahive" \
        .format(date=datetime.datetime.now().date(), grid_energy_import=params['grid_energy_import'], grid_electricity_bill=params['grid_electricity_bill'],
                grid_avg_power=params['grid_avg_power'], solar_energy_generation=params['solar_energy_generation'],
                solar_electricity_bill=params['solar_electricity_bill'], solar_avg_power=params['solar_avg_power'],
                load_energy_consumption=params['load_energy_consumption'],
                load_electricity_bill=params['load_electricity_bill'], load_avg_power=params['load_avg_power'],)
    print(sendText)
    email = EmailService()
    email.sendEmail(fromaddr='from email', recipients=['receiver email 1', 'receiver email 2'], username='youremail@gmail.com', password='your application password',
                    subject='your email subject', text=sendText, mailServer='smtp.gmail.com:587')

if __name__ == "__main__": main()