import {z} from 'zod'

export type InventorySetLevelsRequest = {on_hand: number, safety_stock?: number | undefined, reason?: string | undefined};

export type UpdateApiInventoryVariantIdArgs = {variant_id: string, body: InventorySetLevelsRequest};

export type UpdateApiInventoryVariantIdOptions = {baseUrl: string, OAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const inventoryMoney = z.object({amount: z.number().int(), currency: z.string().min(3).max(3)});

export const inventoryHalLink = z.object({href: z.string().optional(), actions: z.array(z.string()).optional(), types: z.array(z.string()).optional()});

export const inventoryProductKnowledge = z.object({variant_id: z.string(), title: z.string(), description: z.string(), product_url: z.string(), image_url: z.string(), additional_image_urls: z.array(z.string()).optional(), video_url: z.string().optional(), model_3d_url: z.string().optional(), sku: z.string().optional(), gtin: z.string().optional(), mpn: z.string().optional(), brand: z.string().optional(), category: z.string().optional(), price: inventoryMoney.optional(), sale_price: inventoryMoney.optional(), sale_price_starts_at: z.string().optional(), sale_price_ends_at: z.string().optional(), group_id: z.string().optional(), group_title: z.string().optional(), color: z.string().optional(), size: z.string().optional(), size_system: z.string().optional(), gender: z.string().optional(), condition: z.enum(["new", "used", "refurbished"]), material: z.string().optional(), age_group: z.string().optional(), length: z.number().optional(), width: z.number().optional(), height: z.number().optional(), dimension_unit: z.string().optional(), weight: z.number().optional(), weight_unit: z.string().optional(), expiration_date: z.string().optional(), harmonized_system_code: z.string().optional(), country_of_origin: z.string().optional(), seller_name: z.string().optional(), seller_url: z.string().optional(), seller_privacy_policy: z.string().optional(), seller_tos: z.string().optional(), created_on: z.string(), modified_on: z.string(), _links: z.object({self: inventoryHalLink.optional(), set: inventoryHalLink.optional(), delete: inventoryHalLink.optional()})});

export const inventoryLevels = z.object({variant_id: z.string().optional(), on_hand: z.number().int().optional(), reserved: z.number().int().optional(), safety_stock: z.number().int().optional(), available: z.number().int().optional(), state: z.enum(["in_stock", "limited", "out_of_stock"]).optional(), source: z.enum(["managed", "sync"]).optional(), created_on: z.string().optional(), modified_on: z.string().optional(), product: inventoryProductKnowledge.optional(), _links: z.object({self: inventoryHalLink.optional(), set: inventoryHalLink.optional()}).optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Set stock levels
 * 
 * PUT /inventory/{variant_id}
 */
export const updateApiInventoryVariantId = async (args: UpdateApiInventoryVariantIdArgs, options: UpdateApiInventoryVariantIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json")

if (OAuth !== undefined) headers.set('authorization', `Bearer ${OAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/inventory/${encodeURIComponent(String(args.variant_id))}${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PUT", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(inventoryLevels, await res.json())
};