"""
MIT License

Copyright (c) 2021 TheHamkerCat

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
from PIL import Image, ImageDraw, ImageFont, ImageFilter
from random import randint
import speedtest
import aiohttp


def generate_captcha():
    # Generate one letter
    def gen_letter():
        return chr(randint(65, 90))

    def rndColor():
        return (randint(64, 255), randint(64, 255), randint(64, 255))

    def rndColor2():
        return (randint(32, 127), randint(32, 127), randint(32, 127))

    # Generate a 4 letter word
    def gen_wrong_answer():
        word = ""
        for _ in range(4):
            word += gen_letter()
        return word

    # Generate 8 wrong captcha answers
    wrong_answers = []
    for _ in range(8):
        wrong_answers.append(gen_wrong_answer())

    width = 80 * 4
    height = 100
    correct_answer = ""
    font = ImageFont.truetype("assets/arial.ttf", 55)
    file = f"assets/{randint(1000, 9999)}.jpg"
    image = Image.new('RGB', (width, height), (255, 255, 255))
    draw = ImageDraw.Draw(image)

    # Draw random points on image
    for x in range(width):
        for y in range(height):
            draw.point((x, y), fill=rndColor())

    for t in range(4):
        letter = gen_letter()
        correct_answer += letter
        draw.text(
            (60 * t + 50, 15),
            letter,
            font=font,
            fill=rndColor2()
        )
    image = image.filter(ImageFilter.BLUR)
    image.save(file, 'jpeg')
    return [file, correct_answer, wrong_answers]


async def test_speedtest():
    def speed_convert(size):
        power = 2 ** 10
        zero = 0
        units = {0: "", 1: "Kb/s", 2: "Mb/s", 3: "Gb/s", 4: "Tb/s"}
        while size > power:
            size /= power
            zero += 1
        return f"{round(size, 2)} {units[zero]}"
    speed = speedtest.Speedtest()
    info = speed.get_best_server()
    download = speed.download()
    upload = speed.upload()
    return [speed_convert(download), speed_convert(upload), info]


async def file_size_from_url(url: str) -> int:
    async with aiohttp.ClientSession() as session:
        async with session.head(url) as resp:
            size = int(resp.headers['content-length'])
    return size


async def get_http_status_code(url: str) -> int:
    async with aiohttp.ClientSession() as session:
        async with session.head(url) as resp:
            return resp.status