chore: Expose widget config via an API (#2645)

Expose widget config via an API so that the UI could be detached from the rails Application.

app/controllers/api/v1/widget/base_controller.rb

@@ -94,6 +94,10 @@ class Api::V1::Widget::BaseController < ApplicationController
     { timestamp: permitted_params[:message][:timestamp] }
   end
 
+  def permitted_params
+    params.permit(:website_token)
+  end
+
   def message_params
     {
       account_id: conversation.account_id,

app/controllers/api/v1/widget/campaigns_controller.rb

@@ -4,10 +4,4 @@ class Api::V1::Widget::CampaignsController < Api::V1::Widget::BaseController
   def index
     @campaigns = @web_widget.inbox.campaigns.where(enabled: true)
   end
-
-  private
-
-  def permitted_params
-    params.permit(:website_token)
-  end
 end

app/controllers/api/v1/widget/configs_controller.rb

@@ -0,0 +1,41 @@
+class Api::V1::Widget::ConfigsController < Api::V1::Widget::BaseController
+  before_action :set_global_config
+
+  def create
+    build_contact
+    set_token
+  end
+
+  private
+
+  def set_global_config
+    @global_config = GlobalConfig.get('LOGO_THUMBNAIL', 'BRAND_NAME', 'WIDGET_BRAND_URL')
+  end
+
+  def set_contact
+    @contact_inbox = @web_widget.inbox.contact_inboxes.find_by(
+      source_id: auth_token_params[:source_id]
+    )
+    @contact = @contact_inbox&.contact
+  end
+
+  def build_contact
+    return if @contact.present?
+
+    @contact_inbox = @web_widget.create_contact_inbox(additional_attributes)
+    @contact = @contact_inbox.contact
+  end
+
+  def set_token
+    payload = { source_id: @contact_inbox.source_id, inbox_id: @web_widget.inbox.id }
+    @token = ::Widget::TokenService.new(payload: payload).generate_token
+  end
+
+  def additional_attributes
+    if @web_widget.inbox.account.feature_enabled?('ip_lookup')
+      { created_at_ip: request.remote_ip }
+    else
+      {}
+    end
+  end
+end

app/controllers/api/v1/widget/inbox_members_controller.rb

@@ -4,10 +4,4 @@ class Api::V1::Widget::InboxMembersController < Api::V1::Widget::BaseController
   def index
     @inbox_members = @web_widget.inbox.inbox_members.includes(:user)
   end
-
-  private
-
-  def permitted_params
-    params.permit(:website_token)
-  end
 end

app/controllers/widgets_controller.rb

@@ -1,3 +1,4 @@
+# TODO : Delete this and associated spec once 'api/widget/config' end point is merged
 class WidgetsController < ActionController::Base
   before_action :set_global_config
   before_action :set_web_widget

app/views/api/v1/widget/configs/create.json.jbuilder

@@ -0,0 +1,28 @@
+json.chatwoot_website_channel do
+  json.avatar_url @web_widget.inbox.avatar_url
+  json.has_a_connected_agent_bot @web_widget.inbox.agent_bot&.name
+  json.locale @web_widget.account.locale
+  json.website_name @web_widget.inbox.name
+  json.website_token @web_widget.website_token
+  json.welcome_tagline @web_widget.welcome_tagline
+  json.welcome_title @web_widget.welcome_title
+  json.widget_color @web_widget.widget_color
+  json.enabled_features @web_widget.selected_feature_flags
+  json.enabled_languages available_locales_with_name
+  json.reply_time @web_widget.reply_time
+  json.pre_chat_form_enabled @web_widget.pre_chat_form_enabled
+  json.pre_chat_form_options @web_widget.pre_chat_form_options
+  json.working_hours_enabled @web_widget.inbox.working_hours_enabled
+  json.csat_survey_enabled @web_widget.inbox.csat_survey_enabled
+  json.working_hours @web_widget.inbox.working_hours
+  json.out_of_office_message @web_widget.inbox.out_of_office_message
+  json.utc_off_set ActiveSupport::TimeZone[@web_widget.inbox.timezone].formatted_offset
+end
+json.chatwoot_widget_defaults do
+  json.use_inbox_avatar_for_bot ActiveModel::Type::Boolean.new.cast(ENV.fetch('USE_INBOX_AVATAR_FOR_BOT', false))
+end
+json.contact do
+  json.pubsub_token @contact.pubsub_token
+end
+json.auth_token @token
+json.global_config @global_config