Chore: Remove dead code related to billing (#935)

- remove subscription model
- remove billing-related code

app/models/account.rb

@@ -46,13 +46,11 @@ class Account < ApplicationRecord
   has_many :canned_responses, dependent: :destroy
   has_many :webhooks, dependent: :destroy
   has_many :labels, dependent: :destroy
-  has_one :subscription, dependent: :destroy
   has_many :notification_settings, dependent: :destroy
   has_flags ACCOUNT_SETTINGS_FLAGS.merge(column: 'settings_flags').merge(DEFAULT_QUERY_SETTING)
 
   enum locale: LANGUAGES_CONFIG.map { |key, val| [val[:iso_639_1_code], key] }.to_h
 
-  after_create :create_subscription
   after_create :notify_creation
   after_destroy :notify_deletion
 
@@ -74,22 +72,6 @@ class Account < ApplicationRecord
                              .map { |_| _.tag.name }
   end
 
-  def subscription_data
-    agents_count = users.count
-    per_agent_price = Plan.paid_plan.price
-    {
-      state: subscription.state,
-      expiry: subscription.expiry.to_i,
-      agents_count: agents_count,
-      per_agent_cost: per_agent_price,
-      total_cost: (per_agent_price * agents_count),
-      iframe_url: Subscription::ChargebeeService.hosted_page_url(self),
-      trial_expired: subscription.trial_expired?,
-      account_suspended: subscription.suspended?,
-      payment_source_added: subscription.payment_source_added
-    }
-  end
-
   def webhook_data
     {
       id: id,
@@ -99,11 +81,6 @@ class Account < ApplicationRecord
 
   private
 
-  def create_subscription
-    subscription = build_subscription
-    subscription.save
-  end
-
   def notify_creation
     Rails.configuration.dispatcher.dispatch(ACCOUNT_CREATED, Time.zone.now, account: self)
   end

app/models/channel/web_widget.rb

@@ -2,16 +2,15 @@
 #
 # Table name: channel_web_widgets
 #
-#  id                 :integer          not null, primary key
-#  agent_away_message :string
-#  website_token      :string
-#  website_url        :string
-#  welcome_tagline    :string
-#  welcome_title      :string
-#  widget_color       :string           default("#1f93ff")
-#  created_at         :datetime         not null
-#  updated_at         :datetime         not null
-#  account_id         :integer
+#  id              :integer          not null, primary key
+#  website_token   :string
+#  website_url     :string
+#  welcome_tagline :string
+#  welcome_title   :string
+#  widget_color    :string           default("#1f93ff")
+#  created_at      :datetime         not null
+#  updated_at      :datetime         not null
+#  account_id      :integer
 #
 # Indexes
 #

app/models/subscription.rb

@@ -1,57 +0,0 @@
-# == Schema Information
-#
-# Table name: subscriptions
-#
-#  id                   :integer          not null, primary key
-#  billing_plan         :string           default("trial")
-#  expiry               :datetime
-#  payment_source_added :boolean          default(FALSE)
-#  pricing_version      :string
-#  state                :integer          default("trial")
-#  created_at           :datetime         not null
-#  updated_at           :datetime         not null
-#  account_id           :integer
-#  stripe_customer_id   :string
-#
-
-class Subscription < ApplicationRecord
-  include Events::Types
-
-  belongs_to :account
-  before_create :set_default_billing_params
-  after_create :notify_creation
-
-  enum state: [:trial, :active, :cancelled]
-
-  def payment_source_added!
-    self.payment_source_added = true
-    save
-  end
-
-  def trial_expired?
-    (trial? && expiry < Date.current) ||
-      (cancelled? && !payment_source_added)
-  end
-
-  def suspended?
-    cancelled? && payment_source_added
-  end
-
-  def summary
-    {
-      state: state,
-      expiry: expiry.to_i
-    }
-  end
-
-  private
-
-  def set_default_billing_params
-    self.expiry = Time.now + Plan.default_trial_period
-    self.pricing_version = Plan.default_pricing_version
-  end
-
-  def notify_creation
-    Rails.configuration.dispatcher.dispatch(SUBSCRIPTION_CREATED, Time.zone.now, subscription: self)
-  end
-end

app/models/user.rb

@@ -118,7 +118,6 @@ class User < ApplicationRecord
 
   def serializable_hash(options = nil)
     serialized_user = super(options).merge(confirmed: confirmed?)
-    serialized_user.merge(subscription: account.try(:subscription).try(:summary)) if ENV['BILLING_ENABLED']
     serialized_user
   end