⚡ (engine) Improve engine overall robustness

packages/models/features/answer.ts

@@ -0,0 +1,42 @@
+import { z } from 'zod'
+import { schemaForType } from './utils'
+import { Answer as AnswerPrisma, Prisma } from 'db'
+
+export const answerSchema = schemaForType<AnswerPrisma>()(
+  z.object({
+    createdAt: z.date(),
+    resultId: z.string(),
+    blockId: z.string(),
+    groupId: z.string(),
+    variableId: z.string().nullable(),
+    content: z.string(),
+    storageUsed: z.number().nullable(),
+  })
+)
+
+export const answerInputSchema =
+  schemaForType<Prisma.AnswerUncheckedUpdateInput>()(
+    answerSchema
+      .omit({
+        createdAt: true,
+        resultId: true,
+        variableId: true,
+        storageUsed: true,
+      })
+      .and(
+        z.object({
+          variableId: z.string().nullish(),
+          storageUsed: z.number().nullish(),
+        })
+      )
+  )
+
+export type Stats = {
+  totalViews: number
+  totalStarts: number
+  totalCompleted: number
+}
+
+export type Answer = z.infer<typeof answerSchema>
+
+export type AnswerInput = z.infer<typeof answerInputSchema>