import { FeatureOptionsSchema } from "@models/cusProductModels/cusProductModels.js";
import { CreateFreeTrialSchema } from "@models/productModels/freeTrialModels/freeTrialModels.js";
import { ProductItemSchema } from "@models/productV2Models/productItemModels/productItemModels.js";
import { z } from "zod/v4";
import { notNullish } from "../../utils/utils.js";
import { CustomerDataSchema } from "../common/customerData.js";
import { EntityDataSchema } from "../common/entityData.js";

export const ProductOptions = z.object({
	product_id: z.string(),
	quantity: z.number().nullish(),
	entity_id: z.string().nullish(),
	options: z.array(FeatureOptionsSchema).nullish(),
});

export const ExtAttachBodySchema = z
	.object({
		// Customer / Entity Info
		customer_id: z.string().describe("Your unique identifier for the customer"),
		// Product Info
		product_id: z
			.string()
			.nullish()
			.describe(
				"Product ID, set when creating the product in the Autumn dashboard",
			),

		entity_id: z
			.string()
			.nullish()
			.describe(
				"If attaching a product to an entity, can be used to auto create the entity",
			),

		customer_data: CustomerDataSchema.optional().describe(
			"If auto creating a customer, the properties from this field will be used.",
		),

		entity_data: EntityDataSchema.optional().describe(
			"If attaching a product to an entity and auto creating the entity, the properties from this field will be used. feature_id is required.",
		),

		product_ids: z
			.array(z.string())
			.min(1)
			.nullish()
			.describe(
				"Can be used to attach multiple products to the customer at once. For example, attaching a main product and an add-on.",
			),

		options: z
			.array(FeatureOptionsSchema)
			.nullish()
			.describe("Pass in quantities for prepaid features"),

		free_trial: z
			.boolean()
			.optional()
			.describe(
				"If the product has a free trial, this field can be used to disable it when attaching (by passing in false)",
			),

		// Others
		success_url: z
			.string()
			.optional()
			.describe("URL to redirect to after the purchase is successful"),
		force_checkout: z
			.boolean()
			.optional()
			.describe(
				"Always return a Stripe Checkout URL, even if the customer's card is already on file",
			),
		checkout_session_params: z
			.any()
			.optional()
			.describe(
				"Additional parameters to pass onto Stripe when creating the checkout session",
			),
		reward: z
			.string()
			.or(z.array(z.string()))
			.optional()
			.describe("An Autumn promo_code or reward_id to apply at checkout"),
		invoice: z.boolean().optional(),

		// Checkout params
		skip_checkout: z.boolean().optional(),
		setup_payment: z.boolean().optional(),
	})
	.meta({
		example: {
			customer_id: "cus_123",
			product_id: "pro",
		},
	});

export const AttachBodySchema = ExtAttachBodySchema.extend({
	products: z.array(ProductOptions).nullish(),
	customer_data: CustomerDataSchema.nullish(), // For safety

	// Custom Product
	is_custom: z.boolean().optional(),
	items: z.array(ProductItemSchema).optional(),

	// Override free_trial to support CreateFreeTrialSchema
	free_trial: CreateFreeTrialSchema.or(z.boolean()).optional(),

	// New Version
	version: z.number().optional(),

	// Others
	invoice_only: z.boolean().optional(),
	metadata: z.any().optional(),
	billing_cycle_anchor: z.number().optional(),
	enable_product_immediately: z.boolean().optional(),
	finalize_invoice: z.boolean().optional(),
})
	.refine(
		(data) => {
			if (!data.product_id && !data.product_ids && !data.products) {
				return false;
			}

			return true;
		},
		{
			message: "`product_id` is not provided",
		},
	)
	.refine(
		(data) => {
			if (data.product_id && data.product_ids) {
				return false;
			}

			return true;
		},
		{
			message: "provide either one `product_id` or `product_ids`",
		},
	)
	.refine(
		(data) => {
			if (
				notNullish(data.product_ids) &&
				new Set(data.product_ids).size !== data.product_ids!.length
			) {
				return false;
			}

			return true;
		},
		{
			message: "Can't pass in duplicate product_ids",
		},
	)
	.refine(
		(data) => {
			if (data.product_ids && data.is_custom) {
				return false;
			}

			return true;
		},
		{
			message: "Can't pass in product_ids if is_custom is true",
		},
	)
	.refine(
		(data) => {
			if (data.items && !data.is_custom) {
				return false;
			}

			return true;
		},
		{
			message: "Can't pass in items if is_custom is false",
		},
	);

export const AttachResultSchema = z.object({
	customer_id: z.string(),
	product_ids: z.array(z.string()),
	code: z.string(),
	message: z.string(),

	checkout_url: z.string().nullish(),
	invoice: z.any().nullish(),
});

export type AttachBody = z.infer<typeof AttachBodySchema>;
export type ProductOptions = z.infer<typeof ProductOptions>;
export type AttachResult = z.infer<typeof AttachResultSchema>;