toggle focus between firefox chatgpt tab and most recent used application/tab

toggle-chatgpt.sh

#!/usr/bin/bash

# required programms: kdotool, ydotool, firefox
# - chatgpt needs to be open/pinned to the first tab of firefox
# - Make sure the chatgpt tab is renamed to include "chatgpt" in the title
#   - Use something like https://github.com/Lazyuki/ReTitle to do this (e.g. $0 - chatgpt)

command -v kdotool >/dev/null 2>&1 || { echo "DEBUG: Missing kdotool."; exit 1; }
command -v ydotool >/dev/null 2>&1 || { echo "DEBUG: Missing ydotool."; exit 1; }

check_firefox_window() {
    kdotool search --class "firefox" --limit 1
}

ACTIVE_WINDOW=$(kdotool getactivewindow)
LAST_WINDOW_FILE="/tmp/last_focused_window"
LAST_WINDOW=$(cat "$LAST_WINDOW_FILE" 2>/dev/null || echo "")

FIREFOX_WINDOW=$(check_firefox_window)
if [ -z "$FIREFOX_WINDOW" ]; then
    echo "DEBUG: Starting Firefox..."
    firefox &
    for _ in {1..10}; do
        FIREFOX_WINDOW=$(check_firefox_window)
        [ -n "$FIREFOX_WINDOW" ] && sleep 0.2 && break
        sleep 0.5
    done
    [ -z "$FIREFOX_WINDOW" ] && { echo "DEBUG: Firefox did not start."; exit 1; }
fi

CHATGPT_TAB=$(kdotool getwindowname "$FIREFOX_WINDOW" | grep -i "chatgpt")
CTRL="29"
TAB="15"
ALT="100"

if [ "$ACTIVE_WINDOW" == "$FIREFOX_WINDOW" ] && [ -n "$CHATGPT_TAB" ]; then
    echo "DEBUG: Inside Firefox on ChatGPT tab."
    if [ "$LAST_WINDOW" == "$FIREFOX_WINDOW" ]; then
        echo "DEBUG: Switching to previous Firefox tab."
        ydotool key ${CTRL}:1 ${TAB}:1 ${TAB}:0 ${CTRL}:0
    else
        echo "DEBUG: Switching to previous application."
        ydotool key ${ALT}:1 ${TAB}:1 ${TAB}:0 ${ALT}:0
    fi
elif [ "$ACTIVE_WINDOW" == "$FIREFOX_WINDOW" ]; then
    echo "DEBUG: Switching to ChatGPT tab."
    ydotool key ${ALT}:1 2:1 2:0 ${ALT}:0
else
    echo "DEBUG: Switching to Firefox and ChatGPT tab."
    kdotool windowactivate "$FIREFOX_WINDOW"
    ydotool key ${ALT}:1 2:1 2:0 ${ALT}:0
fi

echo "$ACTIVE_WINDOW" > "$LAST_WINDOW_FILE" || { echo "DEBUG: Failed to write $LAST_WINDOW_FILE."; exit 1; }

Tested on Arch KDE Plasma6 Wayland