#!/usr/bin/python3

import datetime

class Seen(dict):
    def __init__(self, *args, **kargs):
        super().__init__(self, *args, **kargs)
        self.__oldName = {}

    def __getitem__(self, nick):
        if not nick in self.keys():
            if nick in self.__oldName.keys():
                return self[self.__oldName[nick]]

        return super().__getitem__(nick)

    def __setitem__(self, nick, msg):
        super().__setitem__(nick, {'time':datetime.datetime.now(), 'msg':msg})

    def change(self, old, new):
        if old in super().keys():
            super().__setitem__(new, super().__getitem__(old))
            super().__delitem__(old)
            self.__oldName[old] = new

if __name__ == "__main__":
    s = Seen()
    s['narthollis'] = 'test'
    assert s['narthollis']['msg'] == 'test'
    print('Test 1 Passed')

    s.change('narthollis', 'narth')
    assert s['narthollis']['msg'] == 'test'
    assert s['narth']['msg'] == 'test'
    print('Test 2 Passed')

    s.change('narth', 'nartho][is')
    assert s['narthollis']['msg'] == 'test'
    assert s['narth']['msg'] == 'test'
    assert s['nartho][is']['msg'] == 'test'
    print('Test 3 Passed')

    s['bob'] = 'test 2'
    assert s['narthollis']['msg'] == 'test'
    assert s['narth']['msg'] == 'test'
    assert s['nartho][is']['msg'] == 'test'
    assert s['bob']['msg'] == 'test 2'
    print('Test 4 Passed')

    s.change('bob', 'bobett')
    assert s['narthollis']['msg'] == 'test'
    assert s['narth']['msg'] == 'test'
    assert s['nartho][is']['msg'] == 'test'
    assert s['bob']['msg'] == 'test 2'
    assert s['bobett']['msg'] == 'test 2'
    print('Test 5 Passed')