feat(fish): add update-system function with OS detection and sudo retry

.config/fish/conf.d/aliases.fish

@@ -4,7 +4,6 @@ alias g="goto"
 alias vim="nvim"
 alias code="open -a 'Visual Studio Code'"
 alias kubi="open -a 'Lens'"
-alias update-system="brew update && brew upgrade && npm update -g"
 alias do-st="docker compose"
 alias do-re="docker compose down && docker compose up -d"
 alias hetzi="ssh root@128.140.71.88"

.config/fish/functions/update-system.fish

@@ -0,0 +1,51 @@
+function update-system --description "Update system packages depending on OS"
+    # Detect operating system
+    set -l os (uname -s)
+
+    # Helper function to run commands with sudo password retry
+    function run_with_sudo
+        set -l cmd $argv
+        while true
+            # Trigger sudo verification. If it succeeds, run the actual command.
+            if sudo -v
+                sudo $cmd
+                return $status
+            else
+                echo (set_color red)"Passwort war inkorrekt oder sudo wurde abgebrochen."(set_color normal)
+                read -l -p "echo 'Möchten Sie es erneut versuchen? (j/N): '" confirm
+                if not string match -ri '^(j|ja|y|yes)$' "$confirm"
+                    echo "Abgebrochen."
+                    return 1
+                end
+            end
+        end
+    end
+
+    if test "$os" = "Darwin"
+        echo (set_color blue)"[Update-System] macOS erkannt. Starte Homebrew Update..."(set_color normal)
+        brew update && brew upgrade
+        
+        # Optional global npm packages update if npm is installed
+        if type -q npm
+            echo (set_color blue)"[Update-System] Aktualisiere globale npm-Pakete..."(set_color normal)
+            npm update -g
+        end
+    else if test -f /etc/arch-release
+        echo (set_color blue)"[Update-System] Arch Linux erkannt. Starte System-Update..."(set_color normal)
+        if type -q yay
+            # yay handles password prompts and elevation internally, so we run it directly
+            yay -Syu
+        else
+            run_with_sudo pacman -Syu
+        end
+    else if test -f /etc/debian_version
+        echo (set_color blue)"[Update-System] Debian/Ubuntu-basiertes System erkannt. Starte System-Update..."(set_color normal)
+        run_with_sudo apt update; and run_with_sudo apt upgrade -y
+    else if test -f /etc/fedora-release
+        echo (set_color blue)"[Update-System] Fedora erkannt. Starte System-Update..."(set_color normal)
+        run_with_sudo dnf upgrade -y
+    else
+        echo (set_color red)"[Update-System] Unbekanntes Betriebssystem. Keine automatische Aktualisierung möglich."(set_color normal)
+        return 1
+    end
+end