make it work

main.py

@@ -0,0 +1,50 @@
+from urllib.request import urlopen
+from json import load, dump
+from os.path import expanduser
+from os import mkdir
+from random import choice
+from time import time_ns
+
+posted_path = expanduser("~/.binkbot.sent")
+bink = expanduser("~/.bink")
+
+try:
+    mkdir(bink)
+except FileExistsError:
+    pass
+
+try:
+    with open(posted_path, "r") as f:
+        posted = load(f)
+except FileNotFoundError:
+    posted = []
+    with open(posted_path, "w") as f:
+        dump(posted, f)
+
+all_photos = load(urlopen("https://helixnebula.space/photos.json"))
+
+photos = [
+    (placecode, filename)
+    for placecode, place in all_photos.items()
+    for filename in place["photos"]
+]
+
+def in_posted(obj):
+    return obj not in posted
+
+filtered = [photo for photo in filter(in_posted, photos)]
+
+if not filtered:
+    posted = []
+else:
+    photos = filtered
+
+random_photo = choice(photos)
+posted.append(random_photo)
+with open(posted_path, "w") as f:
+    dump(posted, f)
+
+with open(f"{bink}/{time_ns()}", "w") as f:
+    post = f"""daily random photo from ~nebula:
+https://helixnebula.space/{random_photo[0]}/{random_photo[1]}"""
+    f.write(post)