All files / src/types ai.ts

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// src/types/ai.ts
 
import { z } from 'zod';
 
// Helper for consistent required string validation (handles missing/null/empty)
// This is moved here as it's directly related to the schemas.
export const requiredString = (message: string) =>
  z.preprocess((val) => val ?? '', z.string().min(1, message));
 
// --- Zod Schemas for AI Response Validation ---
// These schemas define the expected structure of data returned by the AI.
// They are used for validation and type inference across multiple services.
// Note: These schemas use snake_case to match the database columns and AI prompt instructions,
// distinguishing them from internal camelCase application variables.

export const ExtractedFlyerItemSchema = z.object({
  item: z.string().nullish(),
  price_display: z.string().nullish(),
  price_in_cents: z.number().nullish(),
  quantity: z.string().nullish(),
  category_name: z.string().nullish(),
  master_item_id: z.number().nullish(), // .nullish() allows null or undefined
});
 
export const AiFlyerDataSchema = z.object({
  store_name: z.string().nullable(),
  valid_from: z.string().nullable(),
  valid_to: z.string().nullable(),
  store_address: z.string().nullable(),
  items: z.array(ExtractedFlyerItemSchema),
});