feat: split into multiple items

ai/schema.ts

@@ -2,16 +2,30 @@ import { Field } from "@/prisma/client"
 
 export const fieldsToJsonSchema = (fields: Field[]) => {
   const fieldsWithPrompt = fields.filter((field) => field.llm_prompt)
+  const schemaProperties = fieldsWithPrompt.reduce(
+    (acc, field) => {
+      acc[field.code] = { type: field.type, description: field.llm_prompt || "" }
+      return acc
+    },
+    {} as Record<string, { type: string; description: string }>
+  )
+
   const schema = {
     type: "object",
-    properties: fieldsWithPrompt.reduce(
-      (acc, field) => {
-        acc[field.code] = { type: field.type, description: field.llm_prompt || "" }
-        return acc
+    properties: {
+      ...schemaProperties,
+      items: {
+        type: "array",
+        description: "Included items or products in the transaction which have own name and price",
+        items: {
+          type: "object",
+          properties: schemaProperties,
+          required: [...Object.keys(schemaProperties)],
+          additionalProperties: false,
+        },
       },
-      {} as Record<string, { type: string; description: string }>
-    ),
-    required: fieldsWithPrompt.map((field) => field.code),
+    },
+    required: [...Object.keys(schemaProperties), "items"],
     additionalProperties: false,
   }