Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/models/concerns/toolable.rb

@@ -0,0 +1,116 @@
+module Concerns::Toolable
+  extend ActiveSupport::Concern
+
+  def tool(assistant)
+    custom_tool_record = self
+    # Convert slug to valid Ruby constant name (replace hyphens with underscores, then camelize)
+    class_name = custom_tool_record.slug.underscore.camelize
+
+    # Always create a fresh class to reflect current metadata
+    tool_class = Class.new(Captain::Tools::HttpTool) do
+      description custom_tool_record.description
+
+      custom_tool_record.param_schema.each do |param_def|
+        param param_def['name'].to_sym,
+              type: param_def['type'],
+              desc: param_def['description'],
+              required: param_def.fetch('required', true)
+      end
+    end
+
+    # Register the dynamically created class as a constant in the Captain::Tools namespace.
+    # This is required because RubyLLM's Tool base class derives the tool name from the class name
+    # (via Class#name). Anonymous classes created with Class.new have no name and return empty strings,
+    # which causes "Invalid 'tools[].function.name': empty string" errors from the LLM API.
+    # By setting it as a constant, the class gets a proper name (e.g., "Captain::Tools::CatFactLookup")
+    # which RubyLLM extracts and normalizes to "cat-fact-lookup" for the LLM API.
+    # We refresh the constant on each call to ensure tool metadata changes are reflected.
+    Captain::Tools.send(:remove_const, class_name) if Captain::Tools.const_defined?(class_name, false)
+    Captain::Tools.const_set(class_name, tool_class)
+
+    tool_class.new(assistant, self)
+  end
+
+  def build_request_url(params)
+    return endpoint_url if endpoint_url.blank? || endpoint_url.exclude?('{{')
+
+    render_template(endpoint_url, params)
+  end
+
+  def build_request_body(params)
+    return nil if request_template.blank?
+
+    render_template(request_template, params)
+  end
+
+  def build_auth_headers
+    return {} if auth_none?
+
+    case auth_type
+    when 'bearer'
+      { 'Authorization' => "Bearer #{auth_config['token']}" }
+    when 'api_key'
+      if auth_config['location'] == 'header'
+        { auth_config['name'] => auth_config['key'] }
+      else
+        {}
+      end
+    else
+      {}
+    end
+  end
+
+  def build_basic_auth_credentials
+    return nil unless auth_type == 'basic'
+
+    [auth_config['username'], auth_config['password']]
+  end
+
+  def build_metadata_headers(state)
+    {}.tap do |headers|
+      add_base_headers(headers, state)
+      add_conversation_headers(headers, state[:conversation]) if state[:conversation]
+      add_contact_headers(headers, state[:contact]) if state[:contact]
+    end
+  end
+
+  def add_base_headers(headers, state)
+    headers['X-Chatwoot-Account-Id'] = state[:account_id].to_s if state[:account_id]
+    headers['X-Chatwoot-Assistant-Id'] = state[:assistant_id].to_s if state[:assistant_id]
+    headers['X-Chatwoot-Tool-Slug'] = slug if slug.present?
+  end
+
+  def add_conversation_headers(headers, conversation)
+    headers['X-Chatwoot-Conversation-Id'] = conversation[:id].to_s if conversation[:id]
+    headers['X-Chatwoot-Conversation-Display-Id'] = conversation[:display_id].to_s if conversation[:display_id]
+  end
+
+  def add_contact_headers(headers, contact)
+    headers['X-Chatwoot-Contact-Id'] = contact[:id].to_s if contact[:id]
+    headers['X-Chatwoot-Contact-Email'] = contact[:email].to_s if contact[:email].present?
+    headers['X-Chatwoot-Contact-Phone'] = contact[:phone_number].to_s if contact[:phone_number].present?
+  end
+
+  def format_response(raw_response_body)
+    return raw_response_body if response_template.blank?
+
+    response_data = parse_response_body(raw_response_body)
+    render_template(response_template, { 'response' => response_data, 'r' => response_data })
+  end
+
+  private
+
+  def render_template(template, context)
+    liquid_template = Liquid::Template.parse(template, error_mode: :strict)
+    liquid_template.render(context.deep_stringify_keys, registers: {}, strict_variables: true, strict_filters: true)
+  rescue Liquid::SyntaxError, Liquid::UndefinedVariable, Liquid::UndefinedFilter => e
+    Rails.logger.error("Liquid template error: #{e.message}")
+    raise "Template rendering failed: #{e.message}"
+  end
+
+  def parse_response_body(body)
+    JSON.parse(body)
+  rescue JSON::ParserError
+    body
+  end
+end