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const searchResponseOkSchema = v.object({
page: v.object({
search: v.string(),
session_id: v.string(),
key: v.string(),
title: v.string(),
status: v.number(),
}),
request: v.object({
url: v.string(),
method: v.string(),
get: v.record(v.string(), v.unknown()),
device: v.record(v.string(), v.unknown()),
}),
collection: v.object({
products: v.record(v.string(), v.unknown()),
}),
});
/**
* Type guard to validate if a response from the Laboratorium Discounter search API is valid.
* Checks for the presence and correct types of all required properties including page info,
* request details, and a valid collection of products.
*
* @category Typeguards
* @param response - Response object to validate
* @returns Type predicate indicating if response is a valid SearchResponse
* @example
* ```typescript
* // Valid search response
* const validResponse = {
* page: {
* search: "sodium chloride",
* session_id: "abc123",
* key: "search_key",
* title: "Search Results",
* status: 200
* },
* request: {
* url: "/en/search/sodium-chloride",
* method: "GET",
* get: { q: "sodium chloride" },
* device: { platform: "osx", type: "webkit", mobile: false }
* },
* collection: {
* products: {
* "12345": {
* id: 12345,
* vid: 67890,
* image: 1,
* brand: false,
* code: "CHEM-001",
* ean: "1234567890123",
* sku: "SKU-001",
* score: 1.0,
* available: true,
* unit: true,
* url: "/products/chemical-1",
* title: "Sodium Chloride",
* fulltitle: "Sodium Chloride 500g",
* variant: "500g",
* description: "High purity sodium chloride",
* data_01: "Additional info",
* price: {
* price: 29.99,
* price_incl: 29.99,
* price_excl: 24.79,
* price_old: 39.99,
* price_old_incl: 39.99,
* price_old_excl: 33.05
* }
* }
* }
* }
* };
*
* if (isSearchResponseOk(validResponse)) {
* console.log("Valid search response");
* console.log("Number of products:", Object.keys(validResponse.collection.products).length);
* console.log("Search query:", validResponse.page.search);
* } else {
* console.error("Invalid response structure");
* }
*
* // Invalid search response (missing required properties)
* const invalidResponse = {
* page: { search: "sodium chloride" },
* collection: { products: {} }
* // Missing request object
* };
* if (!isSearchResponseOk(invalidResponse)) {
* console.error("Invalid response - missing required properties");
* }
*
* // Invalid search response (wrong types)
* const wrongTypes = {
* page: "not an object",
* request: "not an object",
* collection: "not an object"
* };
* if (!isSearchResponseOk(wrongTypes)) {
* console.error("Invalid response - wrong property types");
* }
* ```
* @source
*/
export function isSearchResponseOk(response: unknown): response is SearchResponse {
const parsed = v.safeParse(searchResponseOkSchema, response);
if (!parsed.success) {
return false;
}
return Object.values(parsed.output.collection.products).every((product) =>
isSearchResponseProduct(product),
);
}
const priceObjectSchema = v.object({
price: v.number(),
price_incl: v.number(),
price_excl: v.number(),
price_old: v.number(),
price_old_incl: v.number(),
price_old_excl: v.number(),
});
/**
* Type guard to validate if an object has the correct structure for a Laboratorium Discounter price object.
* Checks for the presence and correct types of all required price properties including
* regular prices and old prices (for items on sale).
*
* @category Typeguards
* @param price - Object to validate as PriceObject
* @returns Type predicate indicating if price is a valid PriceObject
* @example
* ```typescript
* // Valid price object (regular price)
* const regularPrice = {
* price: 29.99,
* price_incl: 29.99,
* price_excl: 24.79,
* price_old: 29.99,
* price_old_incl: 29.99,
* price_old_excl: 24.79
* };
*
* if (isPriceObject(regularPrice)) {
* console.log("Valid regular price:", regularPrice.price);
* }
*
* // Valid price object (sale price)
* const salePrice = {
* price: 29.99,
* price_incl: 29.99,
* price_excl: 24.79,
* price_old: 39.99,
* price_old_incl: 39.99,
* price_old_excl: 33.05
* };
*
* if (isPriceObject(salePrice)) {
* console.log("Valid sale price:", salePrice.price);
* console.log("Original price:", salePrice.price_old);
* }
*
* // Invalid price object (missing properties)
* const missingProps = {
* price: 29.99,
* price_incl: 29.99
* // Missing other required properties
* };
* if (!isPriceObject(missingProps)) {
* console.error("Invalid price - missing required properties");
* }
*
* // Invalid price object (wrong types)
* const wrongTypes = {
* price: "29.99", // Should be number
* price_incl: "29.99", // Should be number
* price_excl: "24.79", // Should be number
* price_old: "39.99", // Should be number
* price_old_incl: "39.99", // Should be number
* price_old_excl: "33.05" // Should be number
* };
* if (!isPriceObject(wrongTypes)) {
* console.error("Invalid price - wrong property types");
* }
* ```
* @source
*/
export function isPriceObject(price: unknown): price is PriceObject {
return v.safeParse(priceObjectSchema, price).success;
}
const searchResponseProductSchema = v.object({
id: v.number(),
vid: v.number(),
image: v.number(),
brand: v.boolean(),
code: v.string(),
ean: v.string(),
sku: v.string(),
score: v.number(),
available: v.boolean(),
unit: v.boolean(),
url: v.string(),
title: v.string(),
fulltitle: v.string(),
variant: v.string(),
description: v.string(),
data_01: v.string(),
price: priceObjectSchema,
});
/**
* Type guard to validate if an object has the correct structure for a Laboratorium Discounter search response product.
* Checks for the presence and correct types of all required product properties including
* basic info, availability, and a valid price object.
*
* @category Typeguards
* @param product - Object to validate as SearchResponseProduct
* @returns Type predicate indicating if product is a valid SearchResponseProduct
* @example
* ```typescript
* // Valid search response product
* const validProduct = {
* id: 12345,
* vid: 67890,
* image: 1,
* brand: false,
* code: "CHEM-001",
* ean: "1234567890123",
* sku: "SKU-001",
* score: 1.0,
* available: true,
* unit: true,
* url: "/products/chemical-1",
* title: "Sodium Chloride",
* fulltitle: "Sodium Chloride 500g",
* variant: "500g",
* description: "High purity sodium chloride",
* data_01: "Additional info",
* price: {
* price: 29.99,
* price_incl: 29.99,
* price_excl: 24.79,
* price_old: 39.99,
* price_old_incl: 39.99,
* price_old_excl: 33.05
* }
* };
*
* if (isSearchResponseProduct(validProduct)) {
* console.log("Valid product:", validProduct.title);
* console.log("Price:", validProduct.price.price);
* console.log("Available:", validProduct.available);
* }
* ```
* @source
*/
export function isSearchResponseProduct(product: unknown): product is SearchResponseProduct {
return v.safeParse(searchResponseProductSchema, product).success;
}
const productObjectSchema = v.object({
product: v.pipe(
v.record(v.string(), v.unknown()),
v.check(
(val) => 'variants' in val && (typeof val.variants === 'object' || val.variants === false),
),
),
shop: v.object({
currencies: v.record(v.string(), v.unknown()),
currency: v.string(),
}),
});
/**
* Type guard to validate if an object has the correct structure for a Laboratorium Discounter product object.
* Checks for the presence of a product object with a variants property that is either
* an object containing variant information or false.
*
* @category Typeguards
* @param data - Object to validate as ProductObject
* @returns Type predicate indicating if product is a valid ProductObject
* @example
* ```typescript
* // Valid product object with variants
* const validProduct = {
* product: {
* variants: {
* "1": { id: 1, title: "500g", price: 29.99 },
* "2": { id: 2, title: "1kg", price: 49.99 }
* }
* },
* shop: { currencies: { EUR: {} }, currency: "EUR" }
* };
*
* if (isProductObject(validProduct)) {
* console.log("Valid product object with variants");
* console.log("Number of variants:", Object.keys(validProduct.product.variants).length);
* }
*
* // Valid product object without variants
* const noVariants = {
* product: { variants: false },
* shop: { currencies: { EUR: {} }, currency: "EUR" }
* };
*
* if (isProductObject(noVariants)) {
* console.log("Valid product object without variants");
* }
* ```
* @source
*/
export function isProductObject(data: unknown): data is LaboratoriumDiscounterProductObject {
return v.safeParse(productObjectSchema, data).success;
}
const validSearchParamsSchema = v.object({
limit: v.string(),
format: v.string(),
});
/**
* Type guard to validate if an object has the correct structure for Laboratorium Discounter search parameters.
* Checks for the presence and correct types of required parameters including
* limit (must be a valid number string) and format (must be "json").
*
* @category Typeguards
* @param params - Parameters to validate
* @returns Type predicate indicating if params are valid SearchParams
* @example
* ```typescript
* // Valid search parameters
* const validParams = {
* limit: "10",
* format: "json"
* };
*
* if (isValidSearchParams(validParams)) {
* console.log("Valid search parameters");
* console.log("Limit:", validParams.limit);
* }
*
* // Invalid search parameters (wrong types)
* const wrongTypes = {
* limit: 10, // Should be string
* format: 123 // Should be "json"
* };
* if (!isValidSearchParams(wrongTypes)) {
* console.error("Invalid parameters - wrong property types");
* }
* ```
* @source
*/
export function isValidSearchParams(params: unknown): params is LaboratoriumDiscounterSearchParams {
return v.safeParse(validSearchParamsSchema, params).success;
}
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