Return 'provider.json' via a controller, to better be able to control the response headers (in particular, 'X-Minimum-Client-Version'). It must now be placed in config/provider/provider.json

1 files changed, 24 insertions, 0 deletions

diff --git a/app/controllers/static_config_controller.rb b/app/controllers/static_config_controller.rb
new file mode 100644
index 0000000..c669316
--- /dev/null
+++ b/app/controllers/static_config_controller.rb
@@ -0,0 +1,24 @@
+#
+# This controller is responsible for returning some static config files, such as /provider.json
+#
+class StaticConfigController < ActionController::Base
+
+  PROVIDER_JSON = File.join(Rails.root, 'config', 'provider', 'provider.json')
+
+  #
+  # return the provider.json, ensuring that the header X-Minimum-Client-Version is sent
+  # regardless if a 200 or 304 (not modified) response is sent.
+  #
+  def provider
+    response.headers["X-Minimum-Client-Version"] = APP_CONFIG[:minimum_client_version].to_s
+    if File.exists?(PROVIDER_JSON)
+      if stale?(:last_modified => File.mtime(PROVIDER_JSON))
+        response.content_type = 'application/json'
+        render :text => File.read(PROVIDER_JSON)
+      end
+    else
+      render :text => 'not found', :status => 404
+    end
+  end
+
+end
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