import { z } from 'zod';

export const invoiceLineItemSchema = z.object({
  productName: z.string(),
  quantity: z.number(),
  unitPrice: z.number().optional(),
  totalAmount: z.number().optional(),
  barcode: z.string().optional(),
  /** Matched ShopProduct id when OCR name matches. */
  productId: z.string().uuid().optional(),
  /** Per-item confidence 0–1 for manual verification (Gap 9). */
  confidence: z.number().min(0).max(1).optional(),
});

export const analyzeInvoiceResponseSchema = z.object({
  items: z.array(invoiceLineItemSchema),
  supplierName: z.string().optional(),
  totalAmount: z.number().optional(),
  confidence: z.number().min(0).max(1).optional(),
});

export const confirmRestockSchema = z.object({
  items: z.array(
    z.object({
      productId: z.string().uuid().optional(),
      productName: z.string(),
      quantity: z.number(),
      unitPrice: z.number().optional(),
    }),
  ),
  supplierName: z.string().optional(),
  totalAmount: z.number().optional(),
});

export type InvoiceLineItem = z.infer<typeof invoiceLineItemSchema>;
export type AnalyzeInvoiceResponse = z.infer<typeof analyzeInvoiceResponseSchema>;
export type ConfirmRestockInput = z.infer<typeof confirmRestockSchema>;