#!/usr/bin/env python3
"""load links from a gemini file and output the latest date for each one"""

import sys
import socket
import ssl
import fileinput
from dateutil.parser import parse

DEFAULT = parse('1970-01-01').date()

def getnewestdate(url):
    """load the url, and find the newest date listed in a link"""
    # TODO: outsource to pre-installed cli program?
    hostname = url.split('/')[2]
    try:
     s = socket.create_connection((hostname, 1965),timeout=2)
    except:
     return DEFAULT
    context = ssl.SSLContext()
    context.check_hostname = False
    context.verify_mode = ssl.CERT_NONE
    s = context.wrap_socket(s, server_hostname = hostname)
    s.sendall((url + '\r\n').encode("UTF-8"))
    fp = s.makefile("rb")
    header = fp.readline()
    header = header.decode("UTF-8").strip()
    # TODO: something special if status is not 2x
    return gnd(fp)
def gnd(fp):
    for line in fp:
     if type(line) != str:
       line=line.decode('UTF-8')
     if line.strip()[0:2] == '=>':
      try:
        desc =getdesc(line)
        desc=desc.replace(':',' :') #quirk for parse on drew's capsule
        date = parse(desc,fuzzy=True).date()
        # todo: read lots of these and compare them
        return date
      except:
        pass
    return DEFAULT

def replaceDateIfNewer(desc, newestdate):
    try:
     tup = parse(desc, fuzzy_with_tokens=True)
     date = tup[0].date()
    except:
        return f'{newestdate} - {desc}'
    if newestdate > date:
        return str(newestdate) + ' '.join(tup[1])
    return desc

def main():
    for line in fileinput.input(): #stdin or file from argv
        if line[0:2] == '=>':
            # plz don't use multiple spaces.
            url = line.split(' ')[1]
            desc = getdesc(line)
            olddate = gnd(url)
            newestdate = getnewestdate(url)
            desc = replaceDateIfNewer(desc, newestdate)
            print(f'=> {url} {desc}')
        else:
            print(line.rstrip())

def getdesc(line):
  return ' '.join(line.split(' ')[2:]).strip()

if __name__ == '__main__':
  main()