import {z} from 'zod'

export type GetApiApiV1BanksTopArgs = {country: string, currency?: string | undefined, limit?: number | undefined};

export type GetApiApiV1BanksTopOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const bankTopBanksResponse = z.object({success: z.boolean(), data: z.object({banks: z.array(z.object({id: z.string().optional(), name: z.string().optional(), market: z.string().min(2).max(2).optional(), currency: z.string().min(3).max(3).optional(), displayName: z.string().optional(), logoUrl: z.string().optional(), websiteUrl: z.string().optional(), topInMarket: z.boolean().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
};

/**
 * Retrieve the curated top banks for a market. `country` selects the market; optional `currency` filters further; `limit` caps the result count. Public and cacheable at the market level.
 * 
 * GET /api/v1/banks/top
 */
export const getApiApiV1BanksTop = async (args: GetApiApiV1BanksTopArgs, options?: GetApiApiV1BanksTopOptions) => {
const {baseUrl = "https://core.quidkey.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.country != null) query.append("country", String(args.country))
if (args.currency != null) query.append("currency", String(args.currency))
if (args.limit != null) query.append("limit", String(args.limit))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/banks/top${query.size > 0 ? `?${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(bankTopBanksResponse, await res.json())
};