Account balance anchors

app/models/valuation/name.rb

@@ -0,0 +1,63 @@
+# While typically a view concern, we store the `name` in the DB as a denormalized value to keep our search classes simpler.
+# This is a simple class to handle the logic for generating the name.
+class Valuation::Name
+  def initialize(valuation_kind, accountable_type)
+    @valuation_kind = valuation_kind
+    @accountable_type = accountable_type
+  end
+
+  def to_s
+    case valuation_kind
+    when "opening_anchor"
+      opening_anchor_name
+    when "current_anchor"
+      current_anchor_name
+    else
+      recon_name
+    end
+  end
+
+  private
+    attr_reader :valuation_kind, :accountable_type
+
+    # The start value on the account
+    def opening_anchor_name
+      case accountable_type
+      when "Property"
+        "Original purchase price"
+      when "Loan"
+        "Original principal"
+      when "Investment"
+        "Opening account value"
+      else
+        "Opening balance"
+      end
+    end
+
+    # The current value on the account
+    def current_anchor_name
+      case accountable_type
+      when "Property"
+        "Current market value"
+      when "Loan"
+        "Current loan balance"
+      when "Investment"
+        "Current account value"
+      else
+        "Current balance"
+      end
+    end
+
+    # Any "reconciliation" in the middle of the timeline, typically an "override" by the user to account
+    # for missing entries that cause the balance to be incorrect.
+    def recon_name
+      case accountable_type
+      when "Property", "Investment"
+        "Manual value update"
+      when "Loan"
+        "Manual principal update"
+      else
+        "Manual balance update"
+      end
+    end
+end