refactor(api): extract calculation rule support

packages/api/src/router/calculation-rules.ts

@@ -7,6 +7,10 @@ import { findUniqueOrThrow } from "../db/helpers.js";
 import { PROJECT_BRIEF_SELECT } from "../db/selects.js";
 import { createTRPCRouter, controllerProcedure, managerProcedure } from "../trpc.js";
 import { createAuditEntry } from "../lib/audit.js";
+import {
+  buildCalculationRuleCreateData,
+  buildCalculationRuleUpdateData,
+} from "./calculation-rule-support.js";
 
 export const calculationRuleRouter = createTRPCRouter({
   list: controllerProcedure.query(async ({ ctx }) => {
@@ -40,18 +44,7 @@ export const calculationRuleRouter = createTRPCRouter({
     .input(CreateCalculationRuleSchema)
     .mutation(async ({ ctx, input }) => {
       const rule = await ctx.db.calculationRule.create({
-        data: {
-          name: input.name,
-          triggerType: input.triggerType,
-          costEffect: input.costEffect,
-          chargeabilityEffect: input.chargeabilityEffect,
-          ...(input.description !== undefined ? { description: input.description } : {}),
-          ...(input.projectId !== undefined ? { projectId: input.projectId } : {}),
-          ...(input.orderType !== undefined ? { orderType: input.orderType as never } : {}),
-          ...(input.costReductionPercent !== undefined ? { costReductionPercent: input.costReductionPercent } : {}),
-          priority: input.priority,
-          isActive: input.isActive,
-        },
+        data: buildCalculationRuleCreateData(input),
       });
 
       void createAuditEntry({
@@ -77,22 +70,9 @@ export const calculationRuleRouter = createTRPCRouter({
         "CalculationRule",
       );
 
-      // Build update data using exactOptionalPropertyTypes pattern
-      const updateData: Record<string, unknown> = {};
-      if (data.name !== undefined) updateData.name = data.name;
-      if (data.description !== undefined) updateData.description = data.description;
-      if (data.triggerType !== undefined) updateData.triggerType = data.triggerType;
-      if (data.projectId !== undefined) updateData.projectId = data.projectId;
-      if (data.orderType !== undefined) updateData.orderType = data.orderType;
-      if (data.costEffect !== undefined) updateData.costEffect = data.costEffect;
-      if (data.costReductionPercent !== undefined) updateData.costReductionPercent = data.costReductionPercent;
-      if (data.chargeabilityEffect !== undefined) updateData.chargeabilityEffect = data.chargeabilityEffect;
-      if (data.priority !== undefined) updateData.priority = data.priority;
-      if (data.isActive !== undefined) updateData.isActive = data.isActive;
-
       const updated = await ctx.db.calculationRule.update({
         where: { id },
-        data: updateData,
+        data: buildCalculationRuleUpdateData(data),
       });
 
       void createAuditEntry({