import {z} from 'zod'

export type GetApiStocksArgs = {cif: string, date: string, warehouseName?: string | undefined, productName?: string | undefined, productCode?: string | undefined};

export type GetApiStocksOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const stockResponse = z.object({errorText: z.string().optional(), list: z.array(z.object({warehouse: z.object({warehouseName: z.string().optional(), warehouseType: z.enum(["en gros", "en detail"]).optional()}).optional(), products: z.array(z.object({productName: z.string().optional(), productCode: z.string().optional(), measuringUnit: z.string().optional(), quantity: z.number().optional()})).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
};

/**
 * Listare stocuri
 * 
 * GET /stocks
 */
export const getApiStocks = async (args: GetApiStocksArgs, options?: GetApiStocksOptions) => {
const {baseUrl = "https://ws.smartbill.ro/SBORO/api", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.cif != null) query.append("cif", String(args.cif))
if (args.date != null) query.append("date", String(args.date))
if (args.warehouseName != null) query.append("warehouseName", String(args.warehouseName))
if (args.productName != null) query.append("productName", String(args.productName))
if (args.productCode != null) query.append("productCode", String(args.productCode))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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

const res = await fetchFn(url, {method: "GET", headers})

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

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