try:
    import time
    import requests
    import praw
    import os
    import json
except ImportError:
    print("Please install the required python modules with pip install -r requirements.txt or pip3 install -r requirements.txt!")
    exit()
current_time = time.strftime("%H-%M-%S")
current_path = os.path.dirname(os.path.realpath(__file__))

subreddit_name = "r/memes"

nswf = False

def debugging_message(message : str):
    print("["+current_time+"][DEBUG] "+message)

if not os.path.isfile(current_path+"/used-posts.json"):
    with open(current_path+"/used-posts.json", "w") as used_posts_file:
        json.dump({"ids": []}, used_posts_file)

reddit = praw.Reddit(client_id="TB3qNrAO2cnRkpmI-Vd8hg",
                     client_secret="AO61coSKJ8O8KLlHAqP6W-nvufdgUw",
                     user_agent="Meme of the day"
)

with open(current_path+"/used-posts.json", "r") as used_posts_file:
    used_posts = json.load(used_posts_file)

debugging_message("Getting a post from r/"+subreddit_name)
subreddit = reddit.subreddit(subreddit_name)
hot_post = subreddit.hot()
for post in hot_post:
    try:
        if post.id not in used_posts['ids']:
            if post.url.endswith(".png") or post.url.endswith(".jpg"):
                debugging_message("Found a new post: "+post.title+" ("+post.id+")")
                print(post.url)
                with open(current_path+"/used-posts.json", "w") as used_posts_file:
                    used_posts['ids'].append(post.id)
                    json.dump(used_posts, used_posts_file)
                debugging_message("Saving post to file")
                with open(current_path+'/wallpaper.png', "wb") as file:
                    file.write(requests.get(post.url).content)
                debugging_message("Saving post to file done")
    except:
        debugging_message("Error while getting post skipping and continuing")
        with open(current_path+"/used-posts.json", "w") as used_posts_file:
            used_posts['ids'].append(post.id)
            json.dump(used_posts, used_posts_file)