download from a known GH location when specifying version

Latest still uses the GH API

Author: helgi

install-binary.sh

@@ -66,16 +66,17 @@ verifySupported() {
 
 # getDownloadURL checks the latest available version.
 getDownloadURL() {
-  local url="https://api.github.com/repos/$PROJECT_GH/releases/latest"
   local version=$(git -C $HELM_PLUGIN_PATH describe --tags --exact-match 2>/dev/null)
   if [ -n "$version" ]; then
-    url="https://api.github.com/repos/$PROJECT_GH/releases/tags/$version"
-  fi
-  # Use the GitHub API to find the download url for this project.
-  if type "curl" > /dev/null; then
-    DOWNLOAD_URL=$(curl -s $url | grep $OS | awk '/\"browser_download_url\":/{gsub( /[,\"]/,"", $2); print $2}')
-  elif type "wget" > /dev/null; then
-    DOWNLOAD_URL=$(wget -q -O - $url | grep $OS | awk '/\"browser_download_url\":/{gsub( /[,\"]/,"", $2); print $2}')
+    DOWNLOAD_URL="https://github.com/$PROJECT_GH/releases/download/$version/helm-diff-$OS.tgz"
+  else
+    # Use the GitHub API to find the download url for this project.
+    local url="https://api.github.com/repos/$PROJECT_GH/releases/latest"
+    if type "curl" > /dev/null; then
+      DOWNLOAD_URL=$(curl -s $url | grep $OS | awk '/\"browser_download_url\":/{gsub( /[,\"]/,"", $2); print $2}')
+    elif type "wget" > /dev/null; then
+      DOWNLOAD_URL=$(wget -q -O - $url | grep $OS | awk '/\"browser_download_url\":/{gsub( /[,\"]/,"", $2); print $2}')
+    fi
   fi
 }