Initial commit

.env.example

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+REDDIT_USER_AGENT="Reddit Mastodon Crossposter"
+REDDIT_AUTH_URL=""
+REDDIT_AUTH_TOKEN=""
+REDDIT_REFRESH_TOKEN=""
+REDDIT_CLIENT_ID=""
+REDDIT_CLIENT_SECRET=""
+MASTODON_URL=""
+MASTODON_EMAIL=""
+MASTODON_PASSWORD=""
+MASTODON_USER_ID=""
+MASTODON_APP_NAME=""
+MASTODON_USER_SECRET="usercred.secret"
+MASTODON_CLIENT_SECRET="clientcred.secret"

.gitignore

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+.vscode
+.env
+usercred.secret
+clientcred.secret
+post_toots.sh

README.md

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+# Reddit Mastodon Crossposter
+
+## Usage
+
+1. Install conda env with `conda env create -f environment.yml`.
+
+2. Initialize PRAW with e.g. `reddit.py` (please refer to the [PRAW docs](https://praw.readthedocs.io)).
+
+3. Initialize Mastodon.py with e.g. `masto.py` (please refer to the [Mastodon.py docs](https://mastodonpy.readthedocs.io)).
+
+4. Set all `.env` variables if there are any remaining.
+
+5. Create an `post_toots.sh` and make it executable:
+
+    ```sh
+    #!/bin/bash
+
+    conda activate reddit
+    python "/absolute/path/to/script.py"
+    conda deactivate
+    ```
+
+6. Open the a (user) cronjob editor with `crontab -e` and add the line `0 * * * * /absolute/path/to/post_toots.sh > /dev/null 2>&1`. This cronjob runs hourly and the command outputs are not mailed to the user. Alternatively, `2>&1` can be ommited for debugging purposes if the error outputs should be mailed to the user.

environment.yml

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+name: reddit
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - praw
+  - pip:
+    - mastodon-py==1.5.2
+    - python-dotenv==0.21.0
+    - wget==3.2

masto.py

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+"""Initialize Mastodon.py, login the account and register an application"""
+
+from dotenv import load_dotenv
+from mastodon import Mastodon
+from os import getenv
+
+# load .env
+load_dotenv()
+
+# register application
+Mastodon.create_app(
+    getenv("MASTODON_APP_NAME"),
+    api_base_url = str(getenv("MASTODON_URL")),
+    to_file = getenv("MASTODON_CLIENT_SECRET")
+)
+
+# login
+mastodon = Mastodon(
+    client_id = getenv("MASTODON_CLIENT_SECRET"),
+    api_base_url = getenv("MASTODON_URL")
+)
+mastodon.log_in(
+    getenv("MASTODON_USERNAME"),
+    getenv("MASTODON_PASSWORD"),
+    to_file = getenv("MASTODON_USER_SECRET")
+)
+
+# test toot
+mastodon.toot("Hello World")

reddit.py

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+"""Initialize PRAW"""
+
+import praw
+from dotenv import load_dotenv
+from os import getenv
+
+# load .env
+load_dotenv()
+
+# initialize reddit
+reddit = praw.Reddit(
+    client_id = getenv("REDDIT_CLIENT_ID"),
+    client_secret = getenv("REDDIT_CLIENT_SECRET"),
+    redirect_uri = "http://localhost:8080",         # does not matter what is here
+    user_agent = getenv("REDDIT_USER_AGENT")
+)
+
+# get auth URL
+# print(reddit.auth.url(scopes=["identity", "read"], state="...", duration="permanent"))
+
+# get refresh token
+# print(reddit.auth.authorize(getenv("REDDIT_AUTH_TOKEN")))
+# print(reddit.user.me())

script.py

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+"""Main script to toot a new post"""
+
+import praw, wget
+from dotenv import load_dotenv
+from mastodon import Mastodon
+from os import getenv, remove
+from os.path import getsize
+
+# load .env
+load_dotenv()
+
+# initialize reddit
+reddit = praw.Reddit(
+    client_id = getenv("REDDIT_CLIENT_ID"),
+    client_secret = getenv("REDDIT_CLIENT_SECRET"),
+    redirect_uri = "http://localhost:8080",         # does not matter what is here
+    user_agent = getenv("REDDIT_USER_AGENT")
+)
+
+# initialize mastodon
+mastodon = Mastodon(
+    access_token = getenv("MASTODON_USER_SECRET"),
+    api_base_url = getenv("MASTODON_URL")
+)
+
+# get recent posts to check for duplicates
+last_posts = mastodon.account_statuses(getenv("MASTODON_USER_ID"), limit=15)
+
+for submission in reddit.subreddit("ich_iel").top(time_filter="day", limit=10):
+    # skip post if it is a stickied post
+    if (submission.stickied):
+        continue
+    
+    # check if the post has been posted before
+    already_posted = False
+    for posted_submission in last_posts:
+        if submission.permalink in posted_submission["content"]:
+            already_posted = True
+            break
+    if already_posted:
+        continue
+    
+    # check if text only
+    if submission.is_self:
+        status_text = submission.title + "\n\ngeposted von u/" + submission.author.name + "\n" + submission.permalink + "\n\n" + submission.selftext
+        mastodon.status_post(status_text, visibility="unlisted")
+    # check if reddit video
+    elif "v.redd.it" in submission.url:
+        url = submission.media["reddit_video"]["fallback_url"]
+        url = url.split("?")[0]
+        filename = wget.download(url)
+        print()
+        
+        # check if video file is small enough for the server (10MB)
+        if getsize(filename) < 10*1000000:
+            media = mastodon.media_post(filename)
+            status_text = submission.title + "\n\ngeposted von u/" + submission.author.name + "\nhttps://reddit.com" + submission.permalink
+            mastodon.status_post(status_text, media_ids=media["id"], visibility="unlisted")
+        else:
+            status_text = submission.title + "\n\nGeposteter Videolink: " + url + "\n\ngeposted von u/" + submission.author.name + "\n" + submission.permalink + "\n\n" + submission.selftext
+            mastodon.status_post(status_text, visibility="unlisted")
+        remove(filename)
+    else:
+        filename = wget.download(submission.url)
+        print()
+        media = mastodon.media_post(filename)
+        status_text = submission.title + "\n\ngeposted von u/" + submission.author.name + "\nhttps://reddit.com" + submission.permalink
+        mastodon.status_post(status_text, media_ids=media["id"], visibility="unlisted")
+        remove(filename)
+    break
+