fix: installs failing on arm architecture (#35)

* fix: installs failing on arm

.circleci/test-deploy.yml

@@ -10,6 +10,7 @@ jobs:
   integration-test-macos:
     macos:
       xcode: 14.2.0
+    resource_class: macos.m1.large.gen1
     steps:
       - checkout
       - flutter/install_sdk_and_pub:

src/scripts/install-sdk.sh

@@ -2,21 +2,21 @@
 
 INSTALL_LOCATION=$(eval "echo $ORB_EVAL_INSTALL_LOCATION")
 
-if [ ! -d "$INSTALL_LOCATION/flutter" ]; then
-  mkdir -p "$INSTALL_LOCATION"
-  if [ "$(uname)" == 'Darwin' ]; then
-    curl -o flutter_sdk.zip https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_$ORB_VAL_FLUTTER_SDK_VERSION-stable.zip
-    unzip -qq flutter_sdk.zip -d "$INSTALL_LOCATION"
-    rm flutter_sdk.zip
-  elif uname -a | grep -q "Linux" ; then
-    curl -o flutter_sdk.tar.xz https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_$ORB_VAL_FLUTTER_SDK_VERSION-stable.tar.xz
-    tar xf flutter_sdk.tar.xz -C "$INSTALL_LOCATION"
-    rm -f flutter_sdk.tar.xz
-  else
-    echo "This platform ($(uname -a)) is not supported."
-    exit 1
-  fi
-fi
+function install_flutter() {
+  local machine=${1:-"Linux"}
+  local arch=${2:-"amd64"}
+  [[ $machine == "Darwin" ]] && uname=macos || uname=linux
+  [[ $arch == "arm64" ]] && version="flutter_${uname}_arm64" || version="flutter_${uname}"
+  [[ $uname == "linux" ]] && suffix="tar.xz" || suffix="zip"
+
+  baseurl="https://storage.googleapis.com/flutter_infra_release/releases/stable"
+
+  fullurl="$baseurl/$uname/${version}_$ORB_VAL_FLUTTER_SK_VERSION-stable.${suffix}"
+
+  curl -o "flutter_sdk.${suffix}" "$fullurl"
+}
+
+install_flutter "$(uname)" "$(uname -a)"
 
 echo "export PATH=$INSTALL_LOCATION/flutter/bin:\$PATH" >> "$BASH_ENV"