# Coded by Barlan. 2015
from tkinter import *
from tkinter.messagebox import showinfo, showerror
import smtplib

class Login(Tk):
    '''Here the Login window appears and receives data from:
        - Email account.
        - Password.
        Furthermore, tries to log in to your gmail account.'''
    def __init__(self):
        try:
            self.gmail = smtplib.SMTP("smtp.gmail.com", 587)
        except Exception as e:
            showerror("Fatal Error", str(e))
            exit()
        Tk.__init__(self)
        #self.geometry("268x157")
        self.resizable(0,0)
        self.title("e-Sender")
        self.config(bg="black")

        me = StringVar()
        mp = StringVar()
        Label(self, text="Your Gmail account:", bg="black", fg="green").grid(row = 0, column = 0, sticky=W)
        self.my_email = Entry(self, textvariable=me, width = 25)
        self.my_email.grid(row = 0, column = 1)

        Label(self, text="Your Password:", bg="black", fg="green").grid(row = 1, column = 0, sticky=W)
        self.my_passw = Entry(self, textvariable=mp, width = 25)
        self.my_passw.grid(row = 1, column = 1)

        self.email_button = Button(self, text="Enter", command=self.login_gmail, bg="black", fg="green")
        self.email_button.grid(row = 2, column = 0, sticky=NSEW)

        salir = Button(self, text="Exit", command=self.quit, bg="black", fg="red")
        salir.grid(row = 2, column = 1, sticky=NSEW)

    def login_gmail(self):
        account = self.my_email.get()
        self.password = self.my_passw.get()
        self.gmail.ehlo()
        self.gmail.starttls()
        try:
            self.gmail.login(account, self.password)
            showinfo("Success", "You are now logged in Gmail.")
        except:
            showerror("Error", "Unable to login into %s." % account)
            exit()
        gmail = self.gmail
        newEmail(gmail, account)
        self.withdraw()

class newEmail(Login):
    ''' Now we can create a new email, specifying:
            - to
            - subject
            - message'''
    def __init__(self, gmail, account):
        Tk.__init__(self)
        self.resizable(0,0)
        self.title("New Email")
        self.config(bg="black")
        self.gmail = gmail
        self.email = account

        et = StringVar()
        es = StringVar()
        Label(self, text="From: %s" % account, bg="black", fg="orange").grid(row=0, column=0, sticky=NSEW)

        Label(self, text="To:", bg="black", fg="green").grid(row = 1, column = 0, sticky=W)
        self.email_to = Entry(self, textvariable=et, width = 25)
        self.email_to.grid(row = 1, column = 1, sticky=E)

        Label(self, text="Subject:", bg="black", fg="green").grid(row = 2, column = 0, sticky=W)
        self.email_subject = Entry(self, textvariable=es, width = 25)
        self.email_subject.grid(row = 2, column = 1, sticky=E)

        Label(self, text="Your Message:", bg="black", fg="green").grid(row = 3, column = 0, sticky=W)
        self.email_msg = Text(self, width = 25, height = 5)
        self.email_msg.grid(row = 3, column = 1, sticky=E)

        self.email_button = Button(self, text="Send", command=self.sendEmail, bg="black", fg="green")
        self.email_button.grid(row = 4, column = 0, sticky=NSEW)

        salir = Button(self, text="Exit", command=self.quit, bg="black", fg="red")
        salir.grid(row = 4, column = 1, sticky=NSEW)

    def sendEmail(self):
        self.to = self.email_to.get()
        self.subject = self.email_subject.get()
        self.msg = self.email_msg.get("1.0", END)
        headers = "From: %s\nTo: %s\nSubject: %s\n\n" % (self.email, self.to, self.subject)
        body = str(headers + self.msg)
        try:
            self.gmail.sendmail(self.email, self.to, body)
            showinfo("Completed","Email sent successfully to %s" % self.to)
            exit()
        except Exception as e:
            showerror("Error", str(e))
            exit()

L = Login()
L.mainloop()