feat: installer offer to replace local nodekit binary; windows error …

…more information

install.sh

@@ -16,14 +16,14 @@ Bold_Green=''
 Reset=''
 
 if [[ -t 1 ]]; then
-    Reset='\033[0m'
-    Red='\033[0;31m'
-    Green='\033[0;32m'
-    Yellow='\033[0;33m'
-    Blue='\033[0;34m'
-    Bold_Green='\033[1;32m'
-    Bold_White='\033[1m'
-    Opaque='\033[0;2m'
+  Reset='\033[0m'
+  Red='\033[0;31m'
+  Green='\033[0;32m'
+  Yellow='\033[0;33m'
+  Blue='\033[0;34m'
+  Bold_Green='\033[1;32m'
+  Bold_White='\033[1m'
+  Opaque='\033[0;2m'
 fi
 
 success() {
@@ -39,40 +39,58 @@ warn() {
 }
 
 error() {
-    echo -e "${Red}ERROR${Reset}:" "${Yellow}" "$@" "${Reset}" >&2
-    exit 1
+  echo -e "${Red}ERROR${Reset}:" "${Yellow}" "$@" "${Reset}" >&2
+  exit 1
+}
+
+prompt_default_no() {
+  echo -n "$1 (y/N) "
+  read -rn1 prompt_response
+  echo ""
+  if [[ "$prompt_response" =~ "y" ]]; then
+	  return 0
+  fi
+  return 1
 }
 
 if [ -f nodekit ]; then
-    error "An nodekit file already exists in the current directory. Delete or rename it before installing."
+  warn "A nodekit file already exists in the current directory."
+  if prompt_default_no "Do you want to upgrade it to the latest nodekit?"; then
+    rm nodekit
+  else
+    info "Not upgrading nodekit.\n\nYou can run nodekit with:\n\n./nodekit\n\nOr start the installer with:\n\n./nodekit bootstrap"
+    exit 0
+  fi
 fi
 
-
 if [[ ${OS:-} = Windows_NT ]]; then
-  error "Unsupported platform"
+  error "Unsupported platform. Windows is supported only via WSL.\n\nFor WSL installation instructions, see here: https://learn.microsoft.com/en-us/windows/wsl/install"
 fi
 
 trap "warn SIGINT received." int
 trap "info Exiting the installation" exit
 
 case $os in
 'Darwin x86_64')
-    target=nodekit-amd64-darwin
-    ;;
+  platform=amd64-darwin
+  ;;
 'Darwin arm64')
-    target=nodekit-arm64-darwin
-    ;;
+  platform=arm64-darwin
+  ;;
 'Linux aarch64' | 'Linux arm64')
-    target=nodekit-arm64-linux
-    ;;
+  platform=arm64-linux
+  ;;
 'Linux x86_64' | *)
-    target=nodekit-amd64-linux
-    ;;
+  platform=amd64-linux
+  ;;
 esac
 
-echo -e "${Opaque}Downloading:${Reset}${Bold_White} $target $version${Reset}"
-curl --fail --location --progress-bar --output nodekit "$release/$version/$target" ||
-  error "Failed to download ${target} from ${release}"
+target="nodekit-$platform"
+url="$release/$target"
+
+echo -e "${Opaque}Downloading:${Reset}${Bold_White} $target ${Reset}from $url"
+curl --fail --location --progress-bar --output nodekit "$url" ||
+error "Failed to download ${target} from ${release} ${url}"
 
 chmod +x nodekit