feat: worked on check for spend limits

shared/models/cusModels/billingControls/customerBillingControls.ts

@@ -0,0 +1,63 @@
+import { z } from "zod/v4";
+import {
+	type EntityBillingControls,
+	type EntityBillingControlsInput,
+	EntityBillingControlsSchema,
+} from "./entityBillingControls.js";
+import { PurchaseLimitIntervalEnum } from "./purchaseLimitInterval.js";
+import { type DbSpendLimit, DbSpendLimitSchema } from "./spendLimit.js";
+
+export const AutoTopupPurchaseLimitSchema = z.object({
+	interval: PurchaseLimitIntervalEnum.meta({
+		description: "The time interval for the purchase limit window.",
+	}),
+	interval_count: z.number().min(1).default(1).meta({
+		description: "Number of intervals in the purchase limit window.",
+	}),
+	limit: z.number().min(1).meta({
+		description: "Maximum number of auto top-ups allowed within the interval.",
+	}),
+});
+
+export const AutoTopupSchema = z.object({
+	feature_id: z.string().meta({
+		description: "The ID of the feature (credit balance) to auto top-up.",
+	}),
+	enabled: z.boolean().default(false).meta({
+		description: "Whether auto top-up is enabled.",
+	}),
+	threshold: z.number().min(0).meta({
+		description:
+			"When the balance drops below this threshold, an auto top-up will be purchased.",
+	}),
+	quantity: z.number().min(1).meta({
+		description: "Amount of credits to add per auto top-up.",
+	}),
+	purchase_limit: AutoTopupPurchaseLimitSchema.optional().meta({
+		description: "Optional rate limit to cap how often auto top-ups occur.",
+	}),
+});
+
+export const CustomerBillingControlsSchema = z.object({
+	auto_topups: z.array(AutoTopupSchema).optional().meta({
+		description: "List of auto top-up configurations per feature.",
+	}),
+	spend_limits: z.array(DbSpendLimitSchema).optional().meta({
+		description: "List of overage spend limits per feature.",
+	}),
+});
+
+export type AutoTopupPurchaseLimit = z.infer<
+	typeof AutoTopupPurchaseLimitSchema
+>;
+export type AutoTopup = z.infer<typeof AutoTopupSchema>;
+export type CustomerBillingControls = z.infer<
+	typeof CustomerBillingControlsSchema
+>;
+
+export type CustomerBillingControlsInput = z.input<
+	typeof CustomerBillingControlsSchema
+>;
+
+export { EntityBillingControlsSchema, DbSpendLimitSchema };
+export type { EntityBillingControls, EntityBillingControlsInput, DbSpendLimit };