addded new code and reqs

Signed-off-by: Ebbe Baß <ebbe@ping-mee.de>

requirements.txt

@@ -0,0 +1,2 @@
+praw==7.5.0
+requests==2.27.1

save-image.py

@@ -1,8 +1,12 @@
+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__))
 
@@ -13,6 +17,10 @@ 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"