from math import ceil
from random import randint
from unittest import TestCase
from unittest.mock import MagicMock, patch

from modules import chankeep


class TestChanKeep(TestCase):
    def setUp(self):
        self.net = "testnet"
        self.num = 1
        self.chanlimit = 100
        chankeep.main.initConf()
        chankeep.main.r = MagicMock()
        chankeep.main.g = MagicMock()
        chankeep.main.g.pipeline = MagicMock()
        chankeep.main.config["ChanKeep"]["Provision"] = False
        chankeep.getAverageChanlimit = MagicMock()
        chankeep.getAverageChanlimit.return_value = self.chanlimit

        self.listinfo = self.generate_listinfo()
        self.chan_name_list = [x[0] for x in self.listinfo]
        self.chan_member_list = [x[1] for x in self.listinfo]

    def generate_listinfo(self, ranges=None):
        """
        Create a fake listinfo.
        Where #channel has 192 users, and #channel2 has 188 users.
        listinfo = [["#channel", 192], ["#channel2", 188]]
        """
        if not ranges:
            ranges = [[100, 5, 10], [400, 100, 200], [2, 500, 1000]]
        listinfo = []
        for channum, min, max in ranges:
            for i in range(channum):
                chan_name = f"#num-{channum}-{i}"
                chan_users = randint(min, max)
                listinfo.append([chan_name, chan_users])
        return listinfo

    def percent_diff(self, a, b):
        return (abs(b - a) / a) * 100.0

    def test_alt_listinfo(self):
        # We're looking for a perc of 1000-1100
        # And a sigrelay of 2
        # We only want those 10 big channels
        instances = 1
        chanlimit = 5
        max_chans = instances * chanlimit
        listinfo = self.generate_listinfo(
            ranges=[[1000, 1, 2], [200, 400, 800], [10, 1000, 2000]]
        )
        # listinfo_num = [x[1] for x in listinfo]

        listlength = len(listinfo)
        cumul = 0
        try:
            cumul += sum(int(i[1]) for i in listinfo)
        except TypeError:
            return
        mean = round(cumul / listlength, 2)
        siglength = 0
        insiglength = 0
        sigcumul = 0
        insigcumul = 0
        for i in listinfo:
            if int(i[1]) > mean:
                siglength += 1
                sigcumul += int(i[1])
            elif int(i[1]) < mean:
                insiglength += 1
                insigcumul += int(i[1])

        sigrelay = ceil(siglength / chanlimit)
        relay = ceil(listlength / chanlimit)
        print(
            (
                f"len:{listlength} cumul:{cumul} mean:{mean} "
                f"siglength:{siglength} insiglength:{insiglength} "
                f"sigrelay:{sigrelay} relay:{relay} sigcumul:{sigcumul} "
                f"insigcumul:{insigcumul}"
            )
        )
        # We want a return between 1000 and 1100

        # list_insig = [x for x in listinfo_num if x < mean]
        list_sig = [x for x in listinfo if x[1] > mean]
        chosen = sorted(list_sig, reverse=True, key=lambda x: x[1])[:max_chans]
        self.assertEqual(len(chosen), 5)

    @patch("modules.chankeep.keepChannels")
    def test__initialList(self, keepchannels):
        chankeep._initialList(self.net, self.num, self.listinfo)
        net, passed_list, mean, sigrelay, relay = keepchannels.call_args_list[0][0]
        self.assertEqual(net, self.net)
        self.assertEqual(passed_list, self.listinfo)
        # self.assertEqual(chanlimit, self.chanlimit)
        # print(net, mean, sigrelay, relay)

    @patch("modules.chankeep.getChanFree")
    def test_empty_chan_allocate(self, getchanfree):
        getchanfree.return_value = ({1: 600}, 600)  # pretend we have 600 channels free
        eca = chankeep.emptyChanAllocate(self.net, self.chan_name_list)
        self.assertEqual(len(eca), 1)
        num = list(eca.keys())[0]
        chans = eca[list(eca.keys())[0]]
        self.assertEqual(num, self.num)
        self.assertCountEqual(chans, self.chan_name_list)

        getchanfree.return_value = ({1: 100}, 10)
        eca = chankeep.emptyChanAllocate(self.net, self.chan_name_list)
        self.assertEqual(len(eca), 1)
        num = list(eca.keys())[0]
        chans = eca[list(eca.keys())[0]]
        self.assertEqual(num, self.num)
        self.assertEqual(len(chans), 100)
        # self.assertCountEqual(chans, self.chan_name_list)