flatjerk.sh: fix flatpak/apt/xbps detection and app IDs, add help fallback

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

flatjerk.sh

@@ -1,23 +1,15 @@
 #!/bin/bash
 
-flatpakBin=$(/usr/bin/flatpak)
-checkApt=$(/usr/bin/apt)
-checkXbps=$(/usr/bin/xbps-install)
 installFlatpak(){
-    if [ ! -f ${flatpakBin} ];then
-        if [ -f ${checkXbps} ];then
+    if ! command -v flatpak >/dev/null 2>&1;then
+        if command -v xbps-install >/dev/null 2>&1;then
             sudo xbps-install -S flatpak
 
-        elif [ -f ${checkApt} ];then
-            printf "\nChecking for PPA\n"
-            if [ ! -f /etc/apt/sources.list.d/alexlarsson-ubuntu-flatpak-xenial.list ];then
-                printf "\nInstalling PPA\n"
-                sudo add-apt-repository ppa:alexlarsson/flatpak
-                sudo apt update
-                sudo apt install flatpak
-            else
-                sudo apt install flatpak
-            fi
+        elif command -v pacman >/dev/null 2>&1;then
+            sudo pacman -S --needed flatpak
+
+        elif command -v apt >/dev/null 2>&1;then
+            sudo apt install flatpak
         else
             printf "\nUnsupported Operating System"
         fi
@@ -28,7 +20,7 @@ installFlatpak(){
 
 addFlatpakRepo(){
 
-    if [ -f ${flatpakBin} ];then 
+    if command -v flatpak >/dev/null 2>&1;then
         printf "\nAdding Flathub Repository..\n"
         flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
     else
@@ -38,13 +30,13 @@ addFlatpakRepo(){
 
 getPackages(){
     echo -e  "\nInstalling Shortwave..\n"
-    flatpak install flathub shortwave -y
+    flatpak install flathub de.haeckerfelix.Shortwave -y
 
     echo -e "\nInstalling Adapta Theme...\n"
     flatpak install flathub org.gtk.Gtk3theme.Adapta-Nokto-Eta
 
     echo -e "Installing Bitwarden...\n"
-    flatpak install flathub bitwarden -y
+    flatpak install flathub com.bitwarden.desktop -y
 }
 
 helpFile(){
@@ -68,4 +60,8 @@ case ${1} in
     -r)
         addFlatpakRepo
     ;;
+
+    *)
+        helpFile
+    ;;
 esac