fix(captain): read OpenAI key from InstallationConfig in article search terms (#14915)

generate_article_search_terms still pulled ENV['OPENAI_API_KEY'], left
over from before the Jan 2025 Captain migration moved the key into
InstallationConfig as CAPTAIN_OPEN_AI_API_KEY. Every other Captain LLM
call site got updated then; this one (used by Portal::ArticleIndexingJob
for help center article embedding search terms) didn't, so it sent a
blank bearer token unless you also happened to have the old env var set.

Also drops the stale OPENAI_API_KEY line from .env.example and points to
where the key actually lives now (Super Admin > App Configs > Captain).

---------

Co-authored-by: Sony Mathew <2040199+sony-mathew@users.noreply.github.com>
Co-authored-by: Sony Mathew <sony@chatwoot.com>

.env.example

@@ -272,9 +272,9 @@ AZURE_APP_SECRET=
 # ENABLE_SIDEKIQ_DEQUEUE_LOGGER=false
 
 
-# AI powered features
-## OpenAI key
-# OPENAI_API_KEY=
+# AI powered features (Captain)
+# The OpenAI API key and endpoint for Captain are not configured via .env.
+# Set them at Super Admin > App Configs > Captain (CAPTAIN_OPEN_AI_API_KEY, CAPTAIN_OPEN_AI_ENDPOINT).
 
 # Housekeeping/Performance related configurations
 # Set to true if you want to remove stale contact inboxes

enterprise/app/models/enterprise/concerns/article.rb

@@ -67,7 +67,7 @@ module Enterprise::Concerns::Article
       { role: 'system', content: article_to_search_terms_prompt },
       { role: 'user', content: "title: #{title} \n description: #{description} \n content: #{content}" }
     ]
-    headers = { 'Content-Type' => 'application/json', 'Authorization' => "Bearer #{ENV.fetch('OPENAI_API_KEY', nil)}" }
+    headers = { 'Content-Type' => 'application/json', 'Authorization' => "Bearer #{openai_api_key}" }
     body = { model: 'gpt-4o', messages: messages, response_format: { type: 'json_object' } }.to_json
     Rails.logger.info "Requesting Chat GPT with body: #{body}"
     response = HTTParty.post(openai_api_url, headers: headers, body: body)
@@ -77,8 +77,12 @@ module Enterprise::Concerns::Article
 
   private
 
+  def openai_api_key
+    InstallationConfig.find_by(name: 'CAPTAIN_OPEN_AI_API_KEY')&.value.presence || raise(I18n.t('captain.api_key_missing'))
+  end
+
   def openai_api_url
-    endpoint = InstallationConfig.find_by(name: 'CAPTAIN_OPEN_AI_ENDPOINT')&.value || 'https://api.openai.com/'
+    endpoint = InstallationConfig.find_by(name: 'CAPTAIN_OPEN_AI_ENDPOINT')&.value.presence || 'https://api.openai.com/'
     endpoint = endpoint.chomp('/')
     "#{endpoint}/v1/chat/completions"
   end

spec/enterprise/controllers/api/v1/accounts/applied_slas_controller_spec.rb

@@ -144,7 +144,8 @@ RSpec.describe 'Applied SLAs API', type: :request do
         csv_data = CSV.parse(response.body)
         csv_data.reject! { |row| row.all?(&:nil?) }
         expect(csv_data.size).to eq(3)
-        expect(csv_data[1][0].to_i).to eq(conversation1.display_id)
+        conversation_ids = csv_data.drop(1).map { |row| row[0].to_i }
+        expect(conversation_ids).to contain_exactly(conversation1.display_id, conversation2.display_id)
       end
 
       it 'excludes conversations with blocked contacts from the CSV file' do