#!/usr/bin/env python

### STEP 2

import requests
import re
import math

url = "http://jobs.mythic-beasts.com/ukaig6ua6yieHo4o"

r1 = requests.get(url)

# This is inelegant, but meh, it works and regexes are inherently cursed anyway. Especially regexes for scraping HTML.
# It's not like this is being used for a job application or anything.
vals = re.search(r"<p>(&minus; )?(\d+)<i>x</i><sup>2</sup> (&minus;)?\+? (\d+)<i>x</i> (&minus;)?\+? (\d+) = 0\.</p>", r1.text).groups()

a = int(vals[1])
if vals[0] != None:
    a *= -1
b = int(vals[3])
if vals[2] != None:
    b *= -1
c = int(vals[5])
if vals[4] != None:
    c *= -1

x0 = (-b + math.sqrt(b**2 - 4*a*c))/(2*a)
x1 = (-b - math.sqrt(b**2 - 4*a*c))/(2*a)
secret = re.search(r'value="([0-9a-z]{64})"/>', r1.text).groups()[0]

r2 = requests.post(url, data = {'x0': x0, 'x1': x1, 'secret': secret, 'submit': "Submit"})

### STEP 3

import dns.resolver
import smtplib

password = re.search(r'password ([0-9a-z]{64})', r2.text).groups()[0]

rdata = dns.resolver.resolve('_submission._tcp.jobs.mythic-beasts.com', 'SRV')[0]

from_email = "step-3@jobs.mythic-beasts.com"
to_email = "Katherina Walshe-Grey <hiring@katherina.rocks>"
message = """\
From: step-3@jobs.mythic-beasts.com
To: Katherina Walshe-Grey <hiring@katherina.rocks>
Date: whenever Now is. please don't make me script this.
Subject: Hello, me!

this is a fun little challenge. don't know if anyone is actually reading these, but if so, thank you! greatly enjoying myself!"""

with smtplib.SMTP(rdata.target, rdata.port) as server:
    server.login("step-3@jobs.mythic-beasts.com", password)
    server.sendmail(from_email, to_email, message)