Add Bluesky support

README.md

@@ -1,7 +1,7 @@
 # I Hope This Email Finds You
 
-Posts to Mastodon completions to the sentence "I hope this email finds you." All content is sourced from Google Books, based on searches for phrases that satrt with "finds you."
+Posts to Mastodon and Bluesky completions to the sentence "I hope this email finds you." All content is sourced from Google Books, based on searches for phrases that start with "finds you."
 
 ## Use
 
-Enter your Google API key into `finds_you.py`, then plug various phrases into the script. It will populate `finds_you.txt` as it goes. Edit all the cruft out of the lines of text, remote duplicates, etc. Then enter your Mastodon server and API key into `post.sh`. Create a cron job that will run `post.sh` periodically. Congratulations, you have a goofy Mastodon bot.
+Enter your Google API key into `finds_you.py`, then plug various phrases into the script. It will populate `finds_you.txt` as it goes. Edit all the cruft out of the lines of text, remote duplicates, etc. Then enter your Mastodon / Mastodon server and auth info into `post.sh`. Create a cron job that will run `post.sh` periodically. Congratulations, you have a goofy bot.

post.sh

@@ -8,6 +8,15 @@ MASTODON_SERVER="https://mastodon.social"
 # Your Mastodon account's access token
 MASTODON_TOKEN="TOKEN_HERE"
 
+# URL of your Bluesky server, without a trailing slash
+BLUESKY_SERVER="https://bsky.social"
+
+# Your Bluesky account's username
+BLUESKY_USERNAME="USERNAME_HERE"
+
+# Your Bluesky account's password
+BLUESKY_PASSWORD="PASSWORD_HERE"
+
 # Define a failure function
 function exit_error {
     printf '%s\n' "$1" >&2
@@ -57,3 +66,24 @@ fi
 
 # Log this to the post history
 echo -n "$ENTRY" | md5sum | cut -d ' ' -f 1 >> post_history.txt
+
+# Create an authentication session on Bluesky
+ACCESS_JWT=$(curl -X POST $BLUESKY_SERVER/xrpc/com.atproto.server.createSession \
+    -H "Content-Type: application/json" \
+    -d '{"identifier": "'"$BLUESKY_USERNAME"'", "password": "'"$BLUESKY_PASSWORD"'"}' \
+    | jq -r '.accessJwt')
+RESULT=$?
+if [ "$RESULT" -ne 0 ]; then
+    exit_error "Could not authenticate to Bluesky"
+fi
+
+# Post the message to Bluesky
+curl -X POST $BLUESKY_SERVER/xrpc/com.atproto.repo.createRecord \
+    -H "Authorization: Bearer $ACCESS_JWT" \
+    -H "Content-Type: application/json" \
+    -d "{\"repo\": \"$BLUESKY_USERNAME\", \"collection\": \"app.bsky.feed.post\", \"record\": {\"text\": \"$POST\", \"createdAt\": \"$(date -u +%Y-%m-%dT%H:%M:%SZ)\"}}"
+
+RESULT=$?
+if [ "$RESULT" -ne 0 ]; then
+    exit_error "Posting message to Bluesky failed"
+fi