subtract debits from cake balance

app/dashboards/fiat_balance_dashboard.rb

@@ -31,7 +31,7 @@ class FiatBalanceDashboard < Administrate::BaseDashboard
   # FORM_ATTRIBUTES
   # an array of attributes that will be displayed
   # on the model's form (`new` and `edit`) pages.
-  FORM_ATTRIBUTES = [:user, :amount_cents].freeze
+  FORM_ATTRIBUTES = [:amount_cents].freeze
 
   # COLLECTION_FILTERS
   # a hash that defines filters that can be used while searching via the search

app/models/application_record.rb

@@ -1,4 +1,6 @@
 # frozen_string_literal: true
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
+
+  default_scope { order(created_at: :desc) }
 end

app/models/stake_order.rb

@@ -33,6 +33,9 @@ class StakeOrder < ApplicationRecord
     super & ["pool_name", "amount"]
   end
 
+  scope :add, -> { where("amount > 0") }
+  scope :remove, -> { where("amount < 0") }
+
   private
 
   def notification_message

app/models/user.rb

@@ -29,6 +29,7 @@ class User < ApplicationRecord
 
   has_many :documents, class_name: "UserDocument", dependent: :destroy
   has_many :stake_orders, dependent: :restrict_with_error
+  has_many :sell_crypto_orders, dependent: :restrict_with_error
   has_one :fiat_balance, dependent: :restrict_with_error
 
   validates :first_name, :last_name, :email, presence: true

app/services/bsc_client.rb

@@ -10,12 +10,12 @@ class BscClient
     }
   end
 
-  def token_balance(token, token_decimals, wallet_address)
+  def token_balance(contract:, digits:, wallet_address:)
     result = self.class.get(
-      "https://api-eu1.tatum.io/v3/blockchain/token/balance/BSC/#{token}/#{wallet_address}",
+      "https://api-eu1.tatum.io/v3/blockchain/token/balance/BSC/#{contract}/#{wallet_address}",
       headers: @headers
     ).parsed_response["balance"]
 
-    result.to_f / (10**token_decimals)
+    (result.to_f / (10**digits)).round(5)
   end
 end

app/value_objects/wallet.rb

@@ -11,12 +11,24 @@ class Wallet
   private
 
   def total_cake
-    return "0" if address.blank?
+    return 0 if address.blank?
 
     BscClient.new.token_balance(
-      "0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82",
-      18,
-      address,
-    )
+      contract: "0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82",
+      digits: 18,
+      wallet_address: address,
+    ) - total_cake_debit
+  end
+
+  def total_cake_debit
+    total_cake_stake_debit + total_cake_sell_debit
+  end
+
+  def total_cake_stake_debit
+    user.stake_orders.processing.add.sum(&:amount).to_f
+  end
+
+  def total_cake_sell_debit
+    user.sell_crypto_orders.processing.sum(&:paid_amount).to_f
   end
 end