Realistic demo data for performance testing (#2361)

* Realistic demo data for performance testing

* Add note about performance testing

* Fix bugbot issues

* More realistic account values

app/models/demo/account_generator.rb

@@ -0,0 +1,238 @@
+class Demo::AccountGenerator
+  include Demo::DataHelper
+
+  def create_credit_card_accounts!(family, count: 1)
+    accounts = []
+    count.times do |i|
+      account = family.accounts.create!(
+        accountable: CreditCard.new,
+        name: account_name("Chase Credit Card", i, count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << account
+    end
+    accounts
+  end
+
+  def create_checking_accounts!(family, count: 1)
+    accounts = []
+    count.times do |i|
+      account = family.accounts.create!(
+        accountable: Depository.new,
+        name: account_name("Chase Checking", i, count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << account
+    end
+    accounts
+  end
+
+  def create_savings_accounts!(family, count: 1)
+    accounts = []
+    count.times do |i|
+      account = family.accounts.create!(
+        accountable: Depository.new,
+        name: account_name("Demo Savings", i, count),
+        balance: 0,
+        currency: "USD",
+        subtype: "savings"
+      )
+      accounts << account
+    end
+    accounts
+  end
+
+  def create_properties_and_mortgages!(family, count: 1)
+    accounts = []
+    count.times do |i|
+      property = family.accounts.create!(
+        accountable: Property.new,
+        name: account_name("123 Maybe Way", i, count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << property
+
+      mortgage = family.accounts.create!(
+        accountable: Loan.new,
+        name: account_name("Mortgage", i, count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << mortgage
+    end
+    accounts
+  end
+
+  def create_vehicles_and_loans!(family, vehicle_count: 1, loan_count: 1)
+    accounts = []
+
+    vehicle_count.times do |i|
+      vehicle = family.accounts.create!(
+        accountable: Vehicle.new,
+        name: account_name("Honda Accord", i, vehicle_count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << vehicle
+    end
+
+    loan_count.times do |i|
+      loan = family.accounts.create!(
+        accountable: Loan.new,
+        name: account_name("Car Loan", i, loan_count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << loan
+    end
+
+    accounts
+  end
+
+  def create_other_accounts!(family, asset_count: 1, liability_count: 1)
+    accounts = []
+
+    asset_count.times do |i|
+      asset = family.accounts.create!(
+        accountable: OtherAsset.new,
+        name: account_name("Other Asset", i, asset_count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << asset
+    end
+
+    liability_count.times do |i|
+      liability = family.accounts.create!(
+        accountable: OtherLiability.new,
+        name: account_name("Other Liability", i, liability_count),
+        balance: 0,
+        currency: "USD"
+      )
+      accounts << liability
+    end
+
+    accounts
+  end
+
+  def create_investment_accounts!(family, count: 3)
+    accounts = []
+
+    if count <= 3
+      account_configs = [
+        { name: "401(k)", balance: 0 },
+        { name: "Roth IRA", balance: 0 },
+        { name: "Taxable Brokerage", balance: 0 }
+      ]
+
+      count.times do |i|
+        config = account_configs[i] || {
+          name: "Investment Account #{i + 1}",
+          balance: 0
+        }
+
+        account = family.accounts.create!(
+          accountable: Investment.new,
+          name: config[:name],
+          balance: config[:balance],
+          currency: "USD"
+        )
+        accounts << account
+      end
+    else
+      count.times do |i|
+        account = family.accounts.create!(
+          accountable: Investment.new,
+          name: "Investment Account #{i + 1}",
+          balance: 0,
+          currency: "USD"
+        )
+        accounts << account
+      end
+    end
+
+    accounts
+  end
+
+  private
+
+    def realistic_balance(type, count = 1)
+      return send("realistic_#{type}_balance") if count == 1
+      send("random_#{type}_balance")
+    end
+    def realistic_credit_card_balance
+      2300
+    end
+
+    def realistic_checking_balance
+      15000
+    end
+
+    def realistic_savings_balance
+      40000
+    end
+
+    def realistic_property_balance
+      560000
+    end
+
+    def realistic_mortgage_balance
+      495000
+    end
+
+    def realistic_vehicle_balance
+      18000
+    end
+
+    def realistic_car_loan_balance
+      8000
+    end
+
+    def realistic_other_asset_balance
+      10000
+    end
+
+    def realistic_other_liability_balance
+      5000
+    end
+
+
+    def random_credit_card_balance
+      random_positive_amount(1000, 5000)
+    end
+
+    def random_checking_balance
+      random_positive_amount(10000, 50000)
+    end
+
+    def random_savings_balance
+      random_positive_amount(50000, 200000)
+    end
+
+    def random_property_balance
+      random_positive_amount(400000, 800000)
+    end
+
+    def random_mortgage_balance
+      random_positive_amount(200000, 600000)
+    end
+
+    def random_vehicle_balance
+      random_positive_amount(15000, 50000)
+    end
+
+    def random_car_loan_balance
+      random_positive_amount(5000, 25000)
+    end
+
+    def random_other_asset_balance
+      random_positive_amount(5000, 50000)
+    end
+
+    def random_other_liability_balance
+      random_positive_amount(2000, 20000)
+    end
+end