feat(ee): Setup @chatwoot/captain NPM library (#10389)

--- 
Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Pranav <pranavrajs@gmail.com>

app/controllers/api/v1/accounts/integrations/captain_controller.rb

@@ -1,22 +1,47 @@
 class Api::V1::Accounts::Integrations::CaptainController < Api::V1::Accounts::BaseController
-  before_action :check_admin_authorization?
-  before_action :fetch_hook
+  before_action :hook
 
-  def sso_url
-    params_string =
-      "token=#{URI.encode_www_form_component(@hook['settings']['access_token'])}" \
-      "&email=#{URI.encode_www_form_component(@hook['settings']['account_email'])}" \
-      "&account_id=#{URI.encode_www_form_component(@hook['settings']['account_id'])}"
-
-    installation_config = InstallationConfig.find_by(name: 'CAPTAIN_APP_URL')
-
-    sso_url = "#{installation_config.value}/sso?#{params_string}"
-    render json: { sso_url: sso_url }, status: :ok
+  def proxy
+    response = HTTParty.send(request_method, request_url, body: permitted_params[:body].to_json, headers: headers)
+    render plain: response.body, status: response.code
   end
 
   private
 
-  def fetch_hook
-    @hook = Current.account.hooks.find_by!(app_id: 'captain')
+  def headers
+    {
+      'X-User-Email' => hook.settings['account_email'],
+      'X-User-Token' => hook.settings['access_token'],
+      'Content-Type' => 'application/json',
+      'Accept' => '*/*'
+    }
+  end
+
+  def request_path
+    if params[:route] == '/sessions/profile'
+      'api/sessions/profile'
+    else
+      "api/accounts/#{hook.settings['account_id']}/#{params[:route]}"
+    end
+  end
+
+  def request_url
+    base_url = InstallationConfig.find_by(name: 'CAPTAIN_API_URL').value
+    URI.join(base_url, request_path).to_s
+  end
+
+  def hook
+    @hook ||= Current.account.hooks.find_by!(app_id: 'captain')
+  end
+
+  def request_method
+    method = permitted_params[:method].downcase
+    raise 'Invalid or missing HTTP method' unless %w[get post put patch delete options head].include?(method)
+
+    method
+  end
+
+  def permitted_params
+    params.permit(:method, :route, body: {})
   end
 end