import {z} from 'zod'

export type GetApiPoisLookupArgs = {merchantId?: string | undefined, altVfiEntityId?: string | undefined, siteReferenceId?: string | undefined, storeNumber?: string | undefined, merchantName?: string | undefined, siteName?: string | undefined, estateManagementId?: string | undefined};

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

export const poiSummary = z.object({poiUid: z.string().optional(), estateManagementId: z.string().optional(), poiName: z.string().optional()});

export const poiLookupResponse = z.object({merchantName: z.string().optional(), siteName: z.string().optional(), siteReferenceId: z.string().optional(), storeNumber: z.string().optional(), merchantId: z.string().optional(), altVfiEntityId: z.string().optional(), merchantCompanyUid: z.string().optional(), entityUid: z.string().optional(), pois: z.array(poiSummary).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
};

/**
 * Lookup POIs by merchant identifiers
 * 
 * GET /pois/lookup
 * 
 * Also accepts auth: BearerAuth
 */
export const getApiPoisLookup = async (args: GetApiPoisLookupArgs, options?: GetApiPoisLookupOptions) => {
const {baseUrl = "https://emea.gsc.verifone.cloud/oidc/checkout-service", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.merchantId != null) query.append("merchantId", String(args.merchantId))
if (args.altVfiEntityId != null) query.append("altVfiEntityId", String(args.altVfiEntityId))
if (args.siteReferenceId != null) query.append("siteReferenceId", String(args.siteReferenceId))
if (args.storeNumber != null) query.append("storeNumber", String(args.storeNumber))
if (args.merchantName != null) query.append("merchantName", String(args.merchantName))
if (args.siteName != null) query.append("siteName", String(args.siteName))
if (args.estateManagementId != null) query.append("estateManagementId", String(args.estateManagementId))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/pois/lookup${query.size > 0 ? `?${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(poiLookupResponse, await res.json())
};