Activity Defaults Changer

#!/bin/bash
# SPDX-License-Identifier: MIT
# SPDX-FileCopyrightText: 2018 Oded Arbel <[email protected]>
# SPDX-FileCopyrightText: 2025 Vasil Tsalta <[email protected]>

function readconf {
  kreadconfig6 --file ~/.config/kdeglobals --group General --key BrowserApplication
  kreadconfig6 --file ~/.config/kdeglobals --group General --key MailApplication
}

function writeconf {
  kwriteconfig6 --file ~/.config/kdeglobals --group General --key BrowserApplication "$1"
  # Additional configuration changes to support GNOME and others
  # as discussed in the comments
  xdg-settings set default-web-browser “$1”
  xdg-mime default "$1" x-scheme-handler/https
  xdg-mime default "$1" x-scheme-handler/http
  xdg-mime default "$1" text/html
  kwriteconfig6 --file ~/.config/kdeglobals --group General --key MailApplication "$2"
  xdg-mime default "$2" x-scheme-handler/mailto
}

service=org.kde.ActivityManager
interface=$service.Activities
path=/ActivityManager/Activities
signal=CurrentActivityChanged
dbus-monitor --profile "type=signal,path=$path,interface=$interface,member=$signal" |
  while read type timestamp serial sender destination path interface member; do
    [ "$member" == "$signal" ] || continue
    curact=$(qdbus $service $path $interface.CurrentActivity)
    name="$(qdbus $service $path $interface.ActivityName $curact)"
    echo "Switched to activity $name"
    echo "Previous browser was $(readconf)"
    case "$name" in
    Home)
      writeconf Firefox.desktop KMail.desktop
      plasma-apply-lookandfeel -a org.nobara41.desktop
      ;;
    Work)
      writeconf Edge.desktop Sedna.desktop
      plasma-apply-lookandfeel -a org.kde.breezeclassic.desktop
      ;;
    *) # default in case a new activity is created
      writeconf Firefox.desktop KMail.desktop
      plasma-apply-lookandfeel -a org.nobara41.desktop
      ;;
    esac
    browser=$(kreadconfig6 --file ~/.config/kdeglobals --group General --key BrowserApplication)
    mail=$(kreadconfig6 --file ~/.config/kdeglobals --group General --key MailApplication)
    notify-send -a Activities -i preferences-desktop-activities ... "Activity is $name\nBrowser is $browser\nMail Client is $mail"
  done