Random Anime Wallpaper API using Reddit /r/Animewallpaper/

random_anime_wallpaper.py

# MIT License
# 
# Copyright (c) 2019 Null
# 
# 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.

# Note that if you use this with `download=true` parameter, you might want to
# clean the /static folder periodically.

import requests
import xml.etree.ElementTree
import re
import random
import time
import hashlib
import os.path
import copy
from flask import Flask
from flask import request
from flask import jsonify

app = Flask(__name__)

URL_BASE_PATH = "http://127.0.0.1:5000/"
# See https://github.com/reddit-archive/reddit/wiki/API for UserAgent format
USER_AGENT = "python-backend:tech.harrynull.os_random_anime_wallpaper:1.0.0 (by /u/Harry_Null)"
CACHE_VALID_TIME = 60 * 10 # 10mins

RE_EXTRACT_IMG = re.compile(r'<span><a href="(.*?)">\[link\]</a>')
FEED_URL = "https://www.reddit.com/r/Animewallpaper/search.rss?q=flair_name%3A%22Desktop%22&restrict_sr=1"

def entry_to_dictionary(entry):
    return {
        "source": entry.find("{http://www.w3.org/2005/Atom}link").attrib["href"],
        "title":entry.find("{http://www.w3.org/2005/Atom}title").text,
        "img": RE_EXTRACT_IMG.search(entry.find("{http://www.w3.org/2005/Atom}content").text).groups(0)[0] 
    }

    
last_fetch_time = 0
cached_results = None

def fetch_feed():
    global last_fetch_time
    global cached_results
    
    if time.time() - last_fetch_time <= CACHE_VALID_TIME and cached_results:
        return cached_results
    
    results = []
    e = xml.etree.ElementTree.fromstring(requests.get(FEED_URL, headers={"User-Agent":USER_AGENT}).text.strip())
    for entry in e.findall("{http://www.w3.org/2005/Atom}entry"):
        try:
            results.append(entry_to_dictionary(entry))
        except:
            pass
            
    cached_results = results
    last_fetch_time = time.time()
    
    return results

def download_img(src):
    ext = src.split(".")[-1]
    name = "static/" + hashlib.sha1(src.encode()).hexdigest() + "." + ext
    if os.path.isfile(name):
        return name
    print("Downloading ",src, " to ",name)
    with open(name, 'wb') as f:
        f.write(requests.get(src).content)
    return name
    
@app.route("/random_anime_wallpaper")
def random_anime_wallpaper():
    res = fetch_feed()
    selected = copy.deepcopy(res[random.randint(0, len(res))])
    if request.args.get('download', False):
        selected["img_src"] = selected["img"]
        selected["img"] = URL_BASE_PATH + download_img(selected["img"])
    return jsonify(selected)
    
@app.route("/anime_wallpapers")
def all_anime_wallpapers():
    return jsonify(fetch_feed())

How do I use it??

@Infinibyte-Github Please refer to https://github.com/harrynull/random_anime_wallpaper
A demo can be found at https://harrynull.tech

Thanks man!