feat: require hostname as a parameter during setup and improve hostname handling

setup.sh

@@ -180,27 +180,23 @@ install_home_manager() {
 
 prepare_hostname() {
     local hostname_file="$HOME/.hostname"
-    local hostname
+    local hostname="$1"
 
-    # Only check for NixOS if hardware configuration is not found
-    if [ -f "$hostname_file" ]; then
+    # If a hostname was provided as argument
+    if [ -n "$hostname" ]; then
+        if ! validate_hostname "$hostname"; then
+            die "Invalid hostname provided. Please use a valid hostname."
+        fi
+        log_info "Using provided hostname: $hostname"
+    # Check if hostname is already set
+    elif [ -f "$hostname_file" ]; then
         hostname=$(cat "$hostname_file")
         log_success "Hostname already found in $hostname_file. Using $hostname."
         return
+    else
+        die "No hostname provided. Please provide a hostname as the first argument."
     fi
 
-    # Ensure interactive input before hostname prompt
-    ensure_interactive
-
-    while true; do
-        log_info "Enter the hostname for this machine:"
-        read -r hostname
-        if validate_hostname "$hostname"; then
-            break
-        fi
-        log_error "Invalid hostname. Please enter a valid hostname:"
-    done
-
     log_info "Setting hostname to $hostname..."
     sudo hostnamectl set-hostname "$hostname" || die "Failed to set hostname"
 
@@ -364,30 +360,30 @@ main() {
     # Check prerequisites
     check_prerequisites
 
+    # First argument should be the hostname
+    local hostname="${1:-}"
+    local continue_flag="${2:-}"
+
+    # Require hostname
+    if [ -z "$hostname" ]; then
+        die "Hostname is required as the first argument. Usage: $0 <hostname> [--continue]"
+    fi
+
     # Clone dotfiles if needed
     if [ ! -d "$DOTFILES_PATH" ]; then
         log_info "Cloning dotfiles repo..."
         git clone "$GIT_REPO" "$DOTFILES_PATH" || die "Failed to clone dotfiles repository"
     fi
     
-    if [ -n "${1:-}" ]; then
-        CONTINUE=$1
-        if [ "$CONTINUE" = "--continue" ]; then
-            log_info "Continuing setup..."
-        else
-            warning_prompt
-            prepare_hostname
-            check_selinux
-            install_nix
-        fi
+    if [ "$continue_flag" = "--continue" ]; then
+        log_info "Continuing setup..."
     else
         warning_prompt
-        prepare_hostname
+        prepare_hostname "$hostname"
         check_selinux
         install_nix
     fi
 
-
     install_home_manager
 
     setup_symlinks
@@ -395,7 +391,6 @@ main() {
     ensure_shell
 
     # Get hostname
-    local hostname
     hostname=$(cat "$HOME/.hostname") || die "Failed to read hostname"
     export PATH=$PATH:$DOTFILES_PATH/bin