add arch_resolve func

Author: asylumexp

scripts/core/core.func

@@ -1714,6 +1714,27 @@ function get_lxc_ip() {
 	export LOCAL_IP
 }
 
+# ------------------------------------------------------------------------------
+# arch_resolve()
+#
+# - Selects an architecture-specific value while preserving amd64 defaults
+# - Usage: arch_resolve "amd64-value" "arm64-value"
+# - Defaults: amd64="amd64", arm64="arm64"
+# ------------------------------------------------------------------------------
+arch_resolve() {
+  local amd64_val="${1:-amd64}"
+  local arm64_val="${2:-arm64}"
+  local arch="${PCT_ARCH:-$(dpkg --print-architecture 2>/dev/null || uname -m)}"
+  case "$arch" in
+  amd64 | x86_64) echo "$amd64_val" ;;
+  arm64 | aarch64) echo "$arm64_val" ;;
+  *)
+    msg_error "Unsupported architecture: $arch"
+    return 106
+    ;;
+  esac
+}
+
 # ==============================================================================
 # SIGNAL TRAPS
 # ==============================================================================