fix arch

lib/utils.bash

@@ -36,9 +36,9 @@ download_release() {
 	local version="$1"
 	local filename="$2"
   	local platform="$(get_platform)"
-  	local arch="$(get_arch)"
+  	local arch="$(get_platform)"
 
-	local url="$GH_REPO/releases/download/v${version}/monaco-${arch}-${platform}"
+	local url="$GH_REPO/releases/download/v${version}/monaco-${platform}-${arch}"
 
 	echo $url
 
@@ -48,6 +48,30 @@ download_release() {
 	chmod +x "$filename"
 }
 
+get_platform() {
+  local -r kernel="$(uname -s)"
+  if [[ ${OSTYPE} == "msys" || ${kernel} == "CYGWIN"* || ${kernel} == "MINGW"* ]]; then
+    echo windows
+  else
+    uname | tr '[:upper:]' '[:lower:]'
+  fi
+}
+
+get_arch() {
+    local arch
+    arch=$(uname -m)
+	if [[ ${arch} == "arm64" ]] || [[ ${arch} == "aarch64" ]]; then
+		echo "arm64"
+	elif [[ ${arch} == *"arm"* ]] || [[ ${arch} == *"aarch"* ]]; then
+		echo "arm"
+	elif [[ ${arch} == *"386"* ]]; then
+		echo "386"
+	else
+		echo "amd64"
+	fi
+}
+
+
 install_version() {
 	local install_type="$1"
 	local version="$2"