Write the gzip'd payload to disk when file:// used

If gzip compression is enabled on the action, and we'd thus send a gzipped payload to the server when we are using a standard baseURL, then similarly write the gzipped payload to disk when we are using a file:// baseURL instead.

Author: AliSoftware

lib/fastlane/plugin/wpmreleasetoolkit/models/app_size_metrics_payload.rb

@@ -50,10 +50,12 @@ def to_h
       #
       def send_metrics(base_url:, api_token:, use_gzip: true)
         uri = URI(base_url)
+        json_payload = use_gzip ? Zlib.gzip(to_h.to_json) : to_h.to_json
+
         # Allow using a `file:` URI for debugging
         if uri.is_a?(URI::File)
           UI.message("Writing metrics payload to file #{uri.path} (instead of sending it to a server)")
-          File.write(uri.path, to_h.to_json)
+          File.write(uri.path, json_payload)
           return 200 # To make it easy at call site to check for pseudo-status code 200 even in non-HTTP cases
         end
 
@@ -66,7 +68,7 @@ def send_metrics(base_url:, api_token:, use_gzip: true)
         headers[:'Content-Encoding'] = 'gzip' if use_gzip
 
         request = Net::HTTP::Post.new(uri, headers)
-        request.body = use_gzip ? Zlib.gzip(to_h.to_json) : to_h.to_json
+        request.body = json_payload
 
         response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
           http.request(request)