feat: Use embeddings in help center search (#9227)

enterprise/app/services/openai/embeddings_service.rb

@@ -1,11 +1,11 @@
 class Openai::EmbeddingsService
-  def get_embedding(content)
-    fetch_embeddings(content)
+  def get_embedding(content, model = 'text-embedding-ada-002')
+    fetch_embeddings(content, model)
   end
 
   private
 
-  def fetch_embeddings(input)
+  def fetch_embeddings(input, model)
     url = 'https://api.openai.com/v1/embeddings'
     headers = {
       'Authorization' => "Bearer #{ENV.fetch('OPENAI_API_KEY', '')}",
@@ -13,7 +13,7 @@ class Openai::EmbeddingsService
     }
     data = {
       input: input,
-      model: 'text-embedding-ada-002'
+      model: model
     }
 
     response = Net::HTTP.post(URI(url), data.to_json, headers)