feat(ee): Add copilot integration (v1) to the conversation sidebar (#10566)

app/services/llm_formatter/conversation_llm_formatter.rb

@@ -0,0 +1,32 @@
+class LlmFormatter::ConversationLlmFormatter < LlmFormatter::DefaultLlmFormatter
+  def format
+    sections = []
+    sections << "Conversation ID: ##{@record.display_id}"
+    sections << "Channel: #{@record.inbox.channel.name}"
+    sections << 'Message History:'
+    sections << if @record.messages.any?
+                  build_messages
+                else
+                  'No messages in this conversation'
+                end
+
+    sections.join("\n")
+  end
+
+  private
+
+  def build_messages
+    return "No messages in this conversation\n" if @record.messages.empty?
+
+    message_text = ''
+    @record.messages.chat.order(created_at: :asc).each do |message|
+      message_text << format_message(message)
+    end
+    message_text
+  end
+
+  def format_message(message)
+    sender = message.message_type == 'incoming' ? 'User' : 'Support agent'
+    "#{sender}: #{message.content}\n"
+  end
+end

app/services/llm_formatter/default_llm_formatter.rb

@@ -0,0 +1,9 @@
+class LlmFormatter::DefaultLlmFormatter
+  def initialize(record)
+    @record = record
+  end
+
+  def format
+    # override this
+  end
+end

app/services/llm_formatter/llm_text_formatter_service.rb

@@ -0,0 +1,20 @@
+class LlmFormatter::LlmTextFormatterService
+  def initialize(record)
+    @record = record
+  end
+
+  def format
+    formatter_class = find_formatter
+    formatter_class.new(@record).format
+  end
+
+  private
+
+  def find_formatter
+    formatter_name = "LlmFormatter::#{@record.class.name}LlmFormatter"
+    formatter_class = formatter_name.safe_constantize
+    raise FormatterNotFoundError, "No formatter found for #{@record.class.name}" unless formatter_class
+
+    formatter_class
+  end
+end