debian: Remove config files when user uninstalls app

scripts/debian-add-repo.sh

@@ -1,8 +1,10 @@
 #!/usr/bin/env bash
 
+# This script runs when user install the debian package
+
 # Install apt repository source list if it does not exist
-if ! grep ^ /etc/apt/sources.list /etc/apt/sources.list.d/* | grep zulip; then
-  sudo apt-key adv --keyserver pool.sks-keyservers.net --recv 69AD12704E71A4803DCA3A682424BE5AE9BD10D9
-  echo "deb https://dl.bintray.com/zulip/debian/ stable main" | \
-  sudo tee -a /etc/apt/sources.list.d/zulip.list
+if ! grep ^ /etc/apt/sources.list /etc/apt/sources.list.d/* | grep zulip.list; then
+    sudo apt-key adv --keyserver pool.sks-keyservers.net --recv 69AD12704E71A4803DCA3A682424BE5AE9BD10D9
+    echo "deb https://dl.bintray.com/zulip/debian/ stable main" | \
+    sudo tee -a /etc/apt/sources.list.d/zulip.list;
 fi

scripts/debian-uninstaller.sh

@@ -1,4 +1,24 @@
 #!/usr/bin/env bash
 
-sudo apt-key del 69AD12704E71A4803DCA3A682424BE5AE9BD10D9
-sudo rm /etc/apt/sources.list.d/zulip.list
+# This script runs when user uninstall the debian package.
+# It will remove all the config files and anything which was added by the app.
+
+# Remove apt repository source list when user uninstalls Zulip app
+if grep ^ /etc/apt/sources.list /etc/apt/sources.list.d/* | grep zulip.list; then
+	sudo apt-key del 69AD12704E71A4803DCA3A682424BE5AE9BD10D9;
+	sudo rm /etc/apt/sources.list.d/zulip.list;
+fi
+
+# Get the root user
+if [ $SUDO_USER ];
+	then getSudoUser=$SUDO_USER;
+	else getSudoUser=`whoami`;
+fi
+
+# Get the path for Zulip's desktop entry which is created by auto-launch script
+getDesktopEntry=/home/$getSudoUser/.config/autostart/zulip.desktop;
+
+# Remove desktop entry if exists
+if [ -f $getDesktopEntry ]; then
+    sudo rm $getDesktopEntry;
+fi