#!/usr/bin/env python3
"""Test the textgenerator module."""

from shutil import rmtree
import os
import httmock
import bbarchivist.textgenerator as bt


def setup_module(module):
    """
    Create necessary files.
    """
    if not os.path.exists("temp_textgenerator"):
        os.mkdir("temp_textgenerator")
    os.chdir("temp_textgenerator")


def teardown_module(module):
    """
    Delete necessary files.
    """
    os.chdir("..")
    rmtree("temp_textgenerator", ignore_errors=True)


def cl_good_mock(url, request):
    """
    HTTMock mock for content_length.
    """
    headers = {'content-length': '525600'}
    return httmock.response(status_code=200,
                            headers=headers)


class TestClassTextGenerator:
    """
    Test text generation and storage.
    """
    @classmethod
    def setup_class(cls):
        """
        Create necessary links.
        """
        deb, cor, rad = bt.url_gen("10.1.1000", "10.2.2000", "10.3.3000")
        cls.deb = deb
        cls.cor = cor
        cls.rad = rad

    def test_generator_debrick_length(self):
        """
        Test length of debrick dict.
        """
        assert len(self.deb.values()) == 5

    def test_generator_core_length(self):
        """
        Test length of core dict.
        """
        assert len(self.cor.values()) == 5

    def test_generator_radio_length(self):
        """
        Test length of radio dict.
        """
        assert len(self.rad.values()) == 7

    def test_write_links(self):
        """
        Test writing URLs to file.
        """
        bt.write_links("10.3.3000", "10.1.1000", "10.2.2000",
                       self.deb, self.cor, self.rad,
                       True, False, None, False, None)
        with open("10.3.3000.txt", 'rb') as file:
            data = file.read()
            data = data.replace(b"\r", b"")
            assert len(data) == 2848

    def test_write_links_unavailable(self):
        """
        Test writing URLs, to file, if file existence not guaranteed.
        """
        bt.write_links("10.3.3000", "10.1.1000", "10.2.2000",
                       self.deb, self.cor, self.rad,
                       False, False, None, False, None)
        with open("10.3.3000.txt", 'rb') as file:
            data = file.read()
            data = data.replace(b"\r", b"")
            assert len(data) == 2878

    def test_write_links_withapps(self):
        """
        Test writing URLs to file, including "apps".
        """
        apps = ["http://APP#1.bar", "http://APP#2.bar", "http://APP#3.bar"]
        with httmock.HTTMock(cl_good_mock):
            bt.write_links("10.3.3000", "10.1.1000", "10.2.2000",
                           self.deb, self.cor, self.rad,
                           True, True, apps, True, "10.4.4.4000")
        with open("TEMPFILE.txt", 'rb') as file:
            data = file.read()
            data = data.replace(b"\r", b"")
            assert len(data) == 3060
