Got a start on the main loop, but jq is being vicious currently, so going to come back to it later.

ratatoskr.sh

@@ -219,4 +219,45 @@ while getopts "${args}" i ; do
 done
 
 
+# Main loop
+while : ; do
+   if [[ -n "${since_id}" ]]; then
+        result="$(curl -sS --oauth2-bearer "${oauth_token}" "${instanceURL}/api/va/timelines/${timeline:-home}?since_id=${since_id}")"
+    else
+        result="$(curl -sS --oauth2-bearer "${oauth_token}" "${instanceURL}/api/v1/timelines/${timeline:-home}")"
+    fi
+                                                                                                                                                                
+    # Error checking
+    # Check if the result is a valid JSON
+    if ! echo "$result" | jq '.' >/dev/null 2>&1; then
+        echo "Error: The response from the server was invalid."
+        play_sound error
+        sleep "${interval:-300}"
+        continue
+    fi
+                                                                                                                                                                
+    error=$(echo "$result" | jq -r '.error // "null"' 2> /dev/null)
+    if [[ "${error:-null}" != "null" ]]; then
+        echo "Error fetching ${timeline:-home} timeline: $error"
+        play_sound error
+        sleep "${interval:-300}"
+        continue
+    fi
+                                                                                                                                                                
+   # process the response to get the latest event id
+    latest_id="$(jq -r '.data[0].id' <<< "$result")"
+    if [[ "${since_id}" != "${latest_id}" ]]; then
+        # handle new events
+        events="$(jq -r '.data[] | "\(.account.username): \(.content)"' <<< "$result")"
+        echo -e "$events" | while read -r event; do
+            echo "$event"
+            echo
+        done
+        since_id="$latest_id"
+    fi
+                                                                                                                                                                
+    sleep "${interval:-300}"
+done
+
+
 exit 0