add alt text generation using ollama llava (local ai)

this might get removed later, if performance on my server is too bad!

memes.sh

@@ -6,7 +6,7 @@ ACCESS_TOKEN="my_bot_token" # Mastodon Access Token
 SUBREDDIT="memes" # Subreddit (must be Image Only, like r/memes)
 
 # Fetch the JSON feed
-json=$(curl -H 'User-Agent: Mozilla/5.0' "https://dhusch.de/rss-bridge/?action=display&bridge=RedditBridge&context=single&r=$SUBREDDIT&f=&score=&d=hot&search=&format=Json" 2>/dev/null)
+json=$(curl -H 'User-Agent: Mozilla/5.0' "https://bridge.easter.fr/?action=display&bridge=RedditBridge&context=single&r=$SUBREDDIT&f=&score=&d=hot&search=&format=Json" 2>/dev/null)
 
 # extract the first item
 item=$(echo "$json" | jq '.items[0]')
@@ -15,13 +15,11 @@ item=$(echo "$json" | jq '.items[0]')
 title=$(echo "$item" | jq -r '.title')
 url=$(echo "$item" | jq -r '.url')
 
-# Make sure to stop if the RSS-Bridge is offline or the extraction failed
-if [ "$url" == "null" ]; then
+if [ "$url" == "null" ] || [ -z "$url" ]; then # Make sure there is no null posting. Happens when RSS-Bridge gets no Content from Reddit
 exit 1
 INSTANCE_URL="https://failed.dhusch.de" # am not sure if the exit actually works. But don't want the Bot to do anything.
 fi
 
-
 tags=$(echo "$item" | jq -r '.tags') # Needed for NSFW check
 
 # extract the image URL from the content_html
@@ -37,9 +35,18 @@ if [ $(du -m /tmp/$filename | awk '{print $1}') -gt 8 ]; then # Check if the fil
     mv /tmp/ff.$filename /tmp/$filename
 fi
 
+ffmpeg -i /tmp/$filename /tmp/meme.gen.png
+
+alt=$(ollama run llava "Describe the meme. do not use more than 1000 characters /tmp/meme.gen.png")
+ollama stop llava
+alt=$(echo $alt | sed 's/"//g' | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+echo $alt
+rm /tmp/meme.gen.png
+
 # Upload the image and get the media ID
 MEDIA_ID=$(curl -X POST -H "Authorization: Bearer $ACCESS_TOKEN" \
              -F "file=@/tmp/$filename" \
+             -F "description=AI generated Alt Text: $alt" \
              "$INSTANCE_URL/api/v1/media" \
              | jq -r '.id')