#!/usr/bin/env python
"""Magni."""
import argparse
import asyncio
import concurrent.futures
import http.server
import json
import os
import random
import secrets
import socketserver
import sys
import typing
import bs4
import cv2 # type:ignore
import jinja2
import requests
class Argparser: # pylint: disable=too-few-public-methods
"""Argparser class."""
def __init__(self):
self.parser = argparse.ArgumentParser()
self.parser.add_argument(
"--url",
"-u",
type=str,
help="the url to the page containing the images",
default="",
)
self.parser.add_argument(
"--method",
"-m",
type=str,
help="the method to use. either fsrcnn or espcn",
default="espcn",
)
self.parser.add_argument(
"--port",
"-p",
type=int,
help="the port to serve the images over",
default=8086,
)
self.parser.add_argument(
"--headers",
type=str,
help="a file containing the headers for the GET requests",
default="",
)
self.args = self.parser.parse_args()
def get_headers(url: str) -> typing.Dict[str, str]:
"""Sets the ncessary headers."""
headers: typing.Dict = {}
if argparser.args.headers != "":
with open(argparser.args.headers, "r") as headers_file:
headers = json.load(headers_file)
else:
headers = {
"Accept": "image/avif,image/webp,*/*",
"Accept-Language": "en-US,en;q=0.5",
"Accept-Encoding": "gzip, deflate, br",
"DNT": "1",
"Connection": "keep-alive",
"Sec-Fetch-Dest": "image",
"Sec-Fetch-Mode": "no-cors",
"Sec-Fetch-Site": "cross-site",
"Sec-GPC": "1",
"Pragma": "no-cache",
"Cache-Control": "no-cache",
"TE": "trailers",
"Referer": url,
"User-Agent": get_user_agent(),
}
return headers
def get_model_path() -> str:
"""Get the model path."""
model_path: str = ""
if "MAGNI_MODEL_PATH" in os.environ and os.environ["MAGNI_MODEL_PATH"]:
model_path = os.environ["MAGNI_MODEL_PATH"]
else:
model_path = "./models"
if not os.path.exists(model_path):
os.makedirs(model_path)
return model_path
def get_image_path() -> str:
"""Get the image path."""
image_path: str = ""
if "MAGNI_IMAGE_PATH" in os.environ and os.environ["MAGNI_IMAGE_PATH"]:
image_path = os.environ["MAGNI_IMAGE_PATH"]
else:
image_path = "./images"
if not os.path.exists(image_path):
os.makedirs(image_path)
return image_path
# TODO-both models are garbage. should train models specifically
# for black and white pics.
def espcn_superscaler(img):
"""ESPCN superscaler."""
superres = cv2.dnn_superres.DnnSuperResImpl_create()
path = get_model_path() + "/" + "ESPCN_x3.pb"
superres.readModel(path)
superres.setModel("espcn", 3)
result = superres.upsample(img)
return result
def fsrcnn_superscaler(img):
"""FSRCNN superscaler"""
superres = cv2.dnn_superres.DnnSuperResImpl_create()
path = get_model_path() + "/" + "FSRCNN_x3.pb"
superres.readModel(path)
superres.setModel("fsrcnn", 3)
result = superres.upsample(img)
return result
# flake8: noqa: E501
def get_user_agent() -> str:
"""Returns a random user agent."""
user_agent: str = ""
if "MAGNI_USER_AGENT" in os.environ and os.environ["MAGNI_USER_AGENT"]:
user_agent = os.environ["MAGNI_USER_AGENT"]
else:
user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36"
return user_agent
def get_proxies() -> typing.Dict:
"""Get the proxy env vars."""
http_proxy: typing.Optional[str] = None
if "HTTP_PROXY" in os.environ and os.environ["HTTP_PROXY"] != "":
http_proxy = os.environ["HTTP_PROXY"]
https_proxy: typing.Optional[str] = None
if "HTTPS_PROXY" in os.environ and os.environ["HTTPS_PROXY"] != "":
https_proxy = os.environ["HTTPS_PROXY"]
no_proxy: typing.Optional[str] = None
if "NO_PROXY" in os.environ and os.environ["NO_PROXY"] != "":
no_proxy = os.environ["NO_PROXY"]
return {"http": http_proxy, "https": https_proxy, "no_proxy": no_proxy}
def single_get(url: str) -> requests.Response:
"""A simple get."""
return requests.get(
url,
allow_redirects=True,
timeout=10,
proxies=get_proxies(),
headers=get_headers(url),
)
def multi_get(urls: list) -> list:
"""Async get."""
with concurrent.futures.ThreadPoolExecutor(max_workers=16) as pool:
response_list = list(pool.map(single_get, urls))
return response_list
def single_get_tag(url_tag_pair: list) -> typing.Tuple[requests.Response, str]:
"""A simple get with a tag."""
return (
requests.get(
url_tag_pair[0],
allow_redirects=True,
timeout=10,
proxies=get_proxies(),
headers=get_headers(url_tag_pair[0]),
),
url_tag_pair[1],
)
def multi_get_tag(
urls: typing.List[typing.Tuple[str, str]],
) -> typing.Optional[typing.List[typing.Tuple[requests.Response, str]]]:
"""Async get with a tag."""
with concurrent.futures.ThreadPoolExecutor(max_workers=16) as pool:
response_list = list(pool.map(single_get_tag, urls))
return response_list
# flake8: noqa: E501
async def model_downloader() -> typing.Optional[typing.List[typing.Tuple[str, str]]]:
"""Download the models."""
down_list = [
"https://github.com/fannymonori/TF-ESPCN/raw/master/export/ESPCN_x3.pb",
"https://github.com/fannymonori/TF-ESPCN/raw/master/export/ESPCN_x2.pb",
"https://github.com/fannymonori/TF-ESPCN/raw/master/export/ESPCN_x4.pb",
"https://github.com/Saafke/FSRCNN_Tensorflow/raw/master/models/FSRCNN_x4.pb",
"https://github.com/Saafke/FSRCNN_Tensorflow/raw/master/models/FSRCNN_x3.pb",
"https://github.com/Saafke/FSRCNN_Tensorflow/raw/master/models/FSRCNN_x2.pb",
]
url_list: typing.List[str] = []
for model in down_list:
if (
os.path.exists(get_model_path() + "/" + model[model.rfind("/") + 1 :])
is False
):
url_list.append(model)
url_tag_list: typing.List[typing.Tuple[str, str]] = []
for url in url_list:
url_tag_list.append((url, url[url.rfind("/") + 1 :]))
response_list: typing.Optional[
typing.List[typing.Tuple[requests.Response, str]]
] = multi_get_tag(url_tag_list)
model_path: str = os.getcwd()
if "MAGNI_MODEL_PATH" in os.environ and os.environ["MAGNI_MODEL_PATH"] != "":
model_path = os.environ["MAGNI_MODEL_PATH"]
if response_list is None:
return None
for response, name in response_list:
with open(model_path + "/" + name, mode="b+w") as downed:
downed.write(response.content)
return url_tag_list
async def download_all_images() -> typing.Optional[typing.List[str]]:
"""Sniffs images."""
response = requests.get(argparser.args.url, timeout=10, allow_redirects=True)
if response.content is None:
return None
soup = bs4.BeautifulSoup(response.content, "lxml")
search_results = soup.findAll("img")
image_url_list: typing.List[typing.Tuple[str, str]] = [
(result["src"], result["src"][result["src"].rfind("/") + 1 :])
for result in search_results
]
print(image_url_list)
response_list: typing.Optional[
typing.List[typing.Tuple[requests.Response, str]]
] = multi_get_tag(image_url_list)
print(response_list)
if response_list is None:
return None
image_name_list: typing.List[str] = []
for response, name in response_list:
image_name_list.append(name)
with open(get_image_path() + "/" + name, "w+b") as image:
image.write(response.content)
return image_name_list
def superres_images(image_list: typing.List[str]) -> None:
"""Superscales the images."""
for image in image_list:
img = cv2.imread(get_image_path() + "/" + image)
if argparser.args.method == "espcn":
result = espcn_superscaler(img)
elif argparser.args.method == "fsrcnn":
result = fsrcnn_superscaler(img)
cv2.imwrite(get_image_path() + "/" + image, result)
async def handle_downloads() -> typing.Optional[typing.List[str]]:
"""Download the models and the images."""
_, image_name_list = await asyncio.gather(model_downloader(), download_all_images())
return image_name_list
def fill_jinja_template(image_name_list: typing.List[str]) -> None:
"""Fills the jinja template."""
environment = jinja2.Environment(
autoescape=True,
loader=jinja2.FileSystemLoader(os.getcwd()),
)
template = environment.get_template(os.path.join("template.jinja2"))
temp_head = template.render({"image_list": image_name_list})
with open(
get_image_path() + "/" + "index.html", encoding="utf-8", mode="w"
) as out_file:
out_file.write(temp_head)
class MagniHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
"""We want to server our own index.html from an arbitrary location."""
def __init__(self, *args, **kwargs):
super().__init__(*args, directory=get_image_path(), **kwargs)
# TODO-add graceful shutdown
def serve(port: int) -> None:
"""Startup a simple http file server."""
handler = MagniHTTPRequestHandler
print(f"now servering on 127.0.0.1:{repr(port)}")
with socketserver.TCPServer(("", port), handler) as httpd:
httpd.serve_forever()
def main() -> None:
"""Entry point."""
image_name_list = asyncio.run(handle_downloads())
if image_name_list is not None:
superres_images(image_name_list)
print("finished superresing images.")
else:
print("failed to download all images.", file=sys.stderr)
sys.exit(1)
fill_jinja_template(image_name_list)
serve(argparser.args.port)
argparser = Argparser()
if __name__ == "__main__":
main()
