#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#  signup.py
#  
#  Copyright 2014 l3li3l@torguard.tg
#  
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#  
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#  
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.
#  
#  
import webapp2
import re

form = """
<!DOCTYPE html>

<html>
  <head>
    <title>Sign Up</title>
    <style type="text/css">
      .label {text-align: right}
      .error {color: red}
    </style>

  </head>

  <body>
    <h2>Signup</h2>
    <form method="post">
      <table>
        <tr>
          <td class="label">
            Username
          </td>
          <td>
            <input type="text" name="username" value="%(username)s">
          </td>
          <td class="error">
            <div> %(error0)s </div>
          </td>
        </tr>

        <tr>
          <td class="label">
            Password
          </td>
          <td>
            <input type="password" name="password" value="%(password)s">
          </td>
          <td class="error">
            <div> %(error1)s </div>
          </td>
        </tr>

        <tr>
          <td class="label">
            Verify Password
          </td>
          <td>
            <input type="password" name="verify" value="%(verify)s">
          </td>
          <td class="error">
            <div> %(error2)s </div>
          </td>
        </tr>

        <tr>
          <td class="label">
            Email (optional)
          </td>
          <td>
            <input type="text" name="email" value="%(email)s">
          </td>
          <td class="error">
            <div> %(error3)s </div>
          </td>
        </tr>
      </table>

      <input type="submit">
    </form>
  </body>

</html>
"""
class MainPage(webapp2.RequestHandler):
	
	error0 = "That&#39;s not a valid username."
	error1 = "That&#39;s not a valid password."
	error2 = "Your passwords didn't match."
	error3 = "That&#39;s not a valid email."
	
	c = ""
	d = ""
	e = ""
	f = ""
	
	def write_form(self, username = "", 
						password = "", 
						verify = "", 
						email = "", 
						error0 = "", 
						error1 = "", 
						error2 = "", 
						error3 = ""):
							
		self.response.out.write(form % {"username": username,
										"password": password,
										"verify": verify,
										"email": email,
										"error0": error0,
										"error1": error1,
										"error2": error2,
										"error3": error3
										})
		
		
	def get(self):
		self.write_form()
		
	def post(self):
		
		
		usrusr = self.valid_usr(self.request.get('username'))
		usrpass = self.valid_pass(self.request.get('password'))
		usrverify = self.usr_verify(self.request.get('password'), self.request.get('verify'))
		usremail = self.valid_email(self.request.get('email'))
		
		if usrusr == 0:
			self.c = self.error0
		if usrpass == 0:
			self.d = self.error1
		if usrverify == 0:
			self.e = self.error2
		if usremail == 0:
			self.f = self.error3
		
		if usrusr+usrpass+usrverify+usremail < 4:
			self.write_form(self.request.get('username'),"","",self.request.get('email'), self.c, self.d, self.e, self.f)
			
		else:
			self.redirect('/welcome?username=%s' % self.request.get('username'))
			
		

	def valid_usr(self, username):
		if re.match(r"^[a-zA-Z0-9_-]{3,20}$", username):
			return 1
		else:
			return 0
		
	def valid_pass(self, password):
		if re.match(r"^.{3,20}$", password):
			return 1
		else:
			return 0
	
	def usr_verify(self, password, verify):
		if password == verify:
			return 1
		else:
			return 0
	
	def valid_email(self, email):
		if email == "":
			return 1
		if re.match(r"^[\S]+@[\S]+\.[\S]+$", email):
			return 1
		else:
			return 0
		
			
class WelcomeHandler(webapp2.RequestHandler):
	def get(self):
		username = self.request.get("username")
		self.response.out.write("Welcome, %s!" % username) 


application = webapp2.WSGIApplication([('/', MainPage),
										('/welcome', WelcomeHandler)],debug=True)