save/load data from gist

community-threads-grabber/main.py

@@ -2,20 +2,63 @@ import praw
 import os
 from datetime import datetime
 import json
+import requests
 
 client_id = os.environ["REDDIT_CLIENT_ID"]
 client_secret = os.environ["REDDIT_CLIENT_SECRET"]
 reddit_pass = os.environ["REDDIT_PASSWORD"]
 username = os.environ["REDDIT_USERNAME"]
+token = os.environ["GITHUB_TOKEN"]
+gist_id = os.environ["GIST_ID"]
+sub = "developersIndia"
+
+
+def get_gist_content(gist_id):
+    token = os.environ["GITHUB_TOKEN"]
+    headers = {
+        "Authorization": f"token {token}",
+        "Accept": "application/vnd.github.v3+json",
+    }
+    response = requests.get(f"https://api.github.com/gists/{gist_id}", headers=headers)
+    gist = response.json()
+    filename = list(gist["files"].keys())[0]
+    return gist["files"][filename]["content"]
+
+
+def update_gist(gist_id, filename, content, description=""):
+    token = os.environ["GITHUB_TOKEN"]
+    headers = {
+        "Authorization": f"token {token}",
+        "Accept": "application/vnd.github.v3+json",
+    }
+    data = {"description": description, "files": {filename: {"content": content}}}
+    response = requests.patch(
+        f"https://api.github.com/gists/{gist_id}", headers=headers, json=data
+    )
+    return response.json()
 
 
 def get_collection(reddit):
-    collection = reddit.subreddit("developersIndia").collections(
+    collection = reddit.subreddit(sub).collections(
         permalink="https://reddit.com/r/developersIndia/collection/958aef35-f9cb-414d-ab33-08bc639e47de"
     )
     return collection
 
 
+def update_wiki(reddit, wikipage, posts):
+    wiki_header = """# A collection of good discussions started by community members"""
+    content = wiki_header + "\n\n"
+    # given a wiki link, update the wiki page with new markdown
+    wikipage = reddit.subreddit(sub).wiki[wikipage]
+
+    for post in posts:
+        formatted_date = datetime.strptime(post['created_at'], '%Y-%m-%dT%H:%M:%S').strftime('%d-%m-%Y')
+        content += f"- `{formatted_date}` [{post['title']}]({post['url']})\n\n"
+    
+    wikipage.edit(content=content)
+    print("Wiki updated successfully!")
+
+
 def main():
     reddit = praw.Reddit(
         client_id=client_id,
@@ -27,22 +70,64 @@ def main():
 
     collection = get_collection(reddit)
 
-    print(f"Last updated: {datetime.utcfromtimestamp(collection.last_update_utc)}")
+    saved_collection_posts = json.loads(get_gist_content(gist_id))
+    saved_collection_ids = [post["id"] for post in saved_collection_posts["posts"]]
+
+    print(f"Database was last updated on {saved_collection_posts['collection_last_updated']}")
+    print(f"Collection was last updated on {datetime.utcfromtimestamp(collection.last_update_utc).isoformat()}")
+
+    if (
+        saved_collection_posts["collection_last_updated"]
+        != datetime.utcfromtimestamp(collection.last_update_utc).isoformat()
+    ):
+        print("Collection was updated, getting new posts data...")
+
+        # given 2 lists find non-common elements
+        db_posts = set(saved_collection_ids)
+        collection_posts = []
+        for submission in collection:
+            collection_posts.append(submission.id)
+        collection_posts = set(collection_posts)
+
+        new_posts = list(collection_posts - db_posts)
+        deleted_posts = list(db_posts - collection_posts)
+
+        print(f"Found {len(new_posts)} new posts!")
+        print(f"Found {len(deleted_posts)} deleted posts!")
 
         posts = []
+        # load the saved collection posts data
+        for submission_id in saved_collection_posts["posts"]:
+            if submission_id["id"] in deleted_posts:
+                continue
+            post = {
+                "title": submission_id["title"],
+                "url": submission_id["url"],
+                "id": submission_id["id"],
+                "num_comments": submission_id["num_comments"],
+                "created_at": submission_id["created_at"],
+                "flair_text": submission_id["flair_text"],
+            }
+            posts.append(post)
 
-    for submission_id in collection.sorted_links:
+        # get the new posts data
+        for submission_id in new_posts:
             submission = reddit.submission(submission_id)
             post = {
                 "title": submission.title,
                 "url": submission.url,
                 "id": submission.id,
                 "num_comments": submission.num_comments,
-            "created_at": datetime.utcfromtimestamp(submission.created_utc).isoformat(),
+                "created_at": datetime.utcfromtimestamp(
+                    submission.created_utc
+                ).isoformat(),
                 "flair_text": submission.link_flair_text,
             }
             posts.append(post)
 
+        # sort the posts by created_at
+        posts = sorted(posts, key=lambda k: k["created_at"])
+
         collection_json = {
             "collection_last_updated": datetime.utcfromtimestamp(
                 collection.last_update_utc
@@ -50,8 +135,11 @@ def main():
             "posts": posts,
         }
 
-    with open("collection.json", "w") as f:
+        update_gist(gist_id, "collection.json", json.dumps(collection_json, indent=4))
-        json.dump(collection_json, f, indent=4)
+        print("Internal database updated successfully!")
+        update_wiki(reddit, "community-threads", posts)
+    else:
+        print("Collection Saved data is up to date!")
 
 
 if __name__ == "__main__":