#! /usr/bin/env python

import copy
import time
import torrenttracker

class TorrentManager:
    torrents = []
    next_torrents = []
    last_time = 0
    def __init__(self, torrents):
        self.torrents = torrents

    def start(self):
        for torrent in self.torrents:
            torrent.getTracker().start()

    def resetNextTorrents(self):
        self.last_time = int(time.time())
        self.next_torrents = copy.copy(self.torrents)

    def getNextTorrent(self):
        if not any(self.next_torrents):
            self.resetNextTorrents()
        minTorrent = self.next_torrents[0]
        for torrent in self.next_torrents:
            if (torrent.getTracker().getInterval()
                    < minTorrent.getTracker().getInterval()):
                minTorrent = torrent
        return minTorrent

    def getNextTime(self):
        torrent = self.getNextTorrent()
        t = max(torrent.getTracker().getInterval() - (int(time.time()) - self.last_time), 0)
        return {'time': t, 'torrent': torrent}

    def updateTorrent(self, torrent = None):
        if torrent == None:
            torrent = self.getNextTorrent()
        torrent.getTracker().interval(0, 0, 0)
        self.next_torrents.remove(torrent)