import {z} from 'zod'

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

export type InventoryMoney = {amount: number, currency: string};

export type InventorySetProductRequest = {title: string, description: string, product_url: string, image_url: string, additional_image_urls?: Array<string> | undefined, video_url?: string | undefined, model_3d_url?: string | undefined, sku?: string | undefined, gtin?: string | undefined, mpn?: string | undefined, brand?: string | undefined, category?: string | undefined, price?: InventoryMoney | undefined, sale_price?: InventoryMoney | undefined, sale_price_starts_at?: string | undefined, sale_price_ends_at?: string | undefined, group_id?: string | undefined, group_title?: string | undefined, color?: string | undefined, size?: string | undefined, size_system?: string | undefined, gender?: string | undefined, condition?: ('new' | 'used' | 'refurbished') | undefined, material?: string | undefined, age_group?: string | undefined, length?: number | undefined, width?: number | undefined, height?: number | undefined, dimension_unit?: string | undefined, weight?: number | undefined, weight_unit?: string | undefined, expiration_date?: string | undefined, harmonized_system_code?: string | undefined, country_of_origin?: string | undefined, seller_name?: string | undefined, seller_url?: string | undefined, seller_privacy_policy?: string | undefined, seller_tos?: string | undefined};

export type InventoryIngestionItem = {stock: InventorySetLevelsRequest, variant_id: string, product?: InventorySetProductRequest | undefined} | {product: InventorySetProductRequest, variant_id: string, stock?: InventorySetLevelsRequest | undefined};

export type InventoryIngestionRequest = {mode?: 'upsert' | undefined, items: Array<InventoryIngestionItem>};

export type CreateApiInventoryIngestionsArgs = {'Cko-Idempotency-Key'?: string | undefined, body: InventoryIngestionRequest};

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

export const inventoryIngestionCounts = z.object({received: z.number().int().optional(), accepted: z.number().int().optional(), rejected: z.number().int().optional(), pending: z.number().int().optional()});

export const inventoryIngestionFailureReason = z.object({code: z.string().optional(), message: z.string().optional()});

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

export const inventoryIngestion = z.object({id: z.string().optional(), state: z.enum(["awaiting_upload", "accepted", "processing", "completed", "completed_with_errors", "failed"]).optional(), mode: z.literal("upsert").optional(), counts: inventoryIngestionCounts.optional(), failure_reason: inventoryIngestionFailureReason.optional(), upload_url: z.string().optional(), created_on: z.string().optional(), modified_on: z.string().optional(), _links: z.object({self: inventoryHalLink.optional(), results: inventoryHalLink.optional(), start: 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
};

/**
 * Submit a batch ingestion
 * 
 * POST /inventory/ingestions
 */
export const createApiInventoryIngestions = async (args: CreateApiInventoryIngestionsArgs, options: CreateApiInventoryIngestionsOptions) => {
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 (args['Cko-Idempotency-Key'] != null) headers.set("Cko-Idempotency-Key", String(args['Cko-Idempotency-Key']))
if (OAuth !== undefined) headers.set('authorization', `Bearer ${OAuth}`)

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

const res = await fetchFn(url, {method: "POST", 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(inventoryIngestion, await res.json())
};