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/rule_generator.rb

@@ -0,0 +1,79 @@
+class Demo::RuleGenerator
+  include Demo::DataHelper
+
+  def create_rules!(family)
+    tags = create_tags!(family)
+    categories = create_categories!(family)
+    merchants = create_merchants!(family)
+
+    rules = []
+
+    if merchants.any? && categories.any?
+      rule = family.rules.create!(
+        name: "Auto-categorize Grocery Purchases",
+        resource_type: "Transaction",
+        conditions: [
+          Rule::Condition.new(condition_type: "merchant_name", operator: "contains", value: "Whole Foods")
+        ],
+        actions: [
+          Rule::Action.new(action_type: "category_id", value: categories.first.id.to_s)
+        ]
+      )
+      rules << rule
+    end
+
+    rules
+  end
+
+  def create_tags!(family)
+    tag_names = [ "Business", "Tax Deductible", "Recurring", "Emergency" ]
+    tags = []
+
+    tag_names.each do |name|
+      tag = family.tags.find_or_create_by!(name: name) do |t|
+        t.color = random_color
+      end
+      tags << tag
+    end
+
+    tags
+  end
+
+  def create_categories!(family)
+    category_data = [
+      { name: "Groceries", color: random_color },
+      { name: "Transportation", color: random_color },
+      { name: "Entertainment", color: random_color },
+      { name: "Utilities", color: random_color },
+      { name: "Healthcare", color: random_color }
+    ]
+
+    categories = []
+    category_data.each do |data|
+      category = family.categories.find_or_create_by!(name: data[:name]) do |c|
+        c.color = data[:color]
+      end
+      categories << category
+    end
+
+    categories
+  end
+
+  def create_merchants!(family)
+    merchant_names = [
+      "Whole Foods Market",
+      "Shell Gas Station",
+      "Netflix",
+      "Electric Company",
+      "Local Coffee Shop"
+    ]
+
+    merchants = []
+    merchant_names.each do |name|
+      merchant = family.merchants.find_or_create_by!(name: name)
+      merchants << merchant
+    end
+
+    merchants
+  end
+end