refactor: update n0des.sh (#378)

* Add target selection
* Change target labels to match rustc for simplicity (needs n0-computer/n0des#374)
* Print error message for unsupported targets
* Do not download if HTTP status code is not 200
* Make downloaded binary executable

Author: Frando

public/n0des.sh

@@ -10,10 +10,30 @@ else
     tag="latest"
 fi
 
-target="linux-amd64"
+# Get target from environment
+if [ "$OS" = "Windows_NT" ]; then
+    target="windows-x86_64"
+else
+    case $(uname -sm) in
+    "Darwin x86_64") target="darwin-x86_64" ;;
+    "Darwin arm64") target="darwin-aarch64" ;;
+    "Linux arm64"|"Linux aarch64") target="linux-aarch64" ;;
+    "Linux x86_64") target="linux-x86_64" ;;
+    *) target="linux-x86_64" ;;
+    esac
+fi
 
-release_url="https://vorc.s3.us-east-2.amazonaws.com/n0des-${target}-${tag}"
+# Skip unsupported targets
+case "$target" in
+  "darin-x68_64"|"linux-aarch64"|"windows-x86_64")
+    echo "Platform $target is not yet supported. Please open an issue if you need support for this platform."
+    exit 1
+    ;;
+esac
 
+release_url="https://vorc.s3.us-east-2.amazonaws.com/n0des-${target}-${tag}"
 
 echo "Downloading n0des for $target with tag $tag to ./n0des"
-curl "$release_url" -o ./n0des
+curl "$release_url" -f -o ./n0des
+chmod a+x ./n0des
+echo "Downloaded. Run the n0des CLI by executing ./n0des --help"