import {z} from 'zod'

export type GetApiApiUtilitiesCountriesFiatRailCodeArgs = {fiatRailCode: 'usd' | 'cop' | 'cop-bre-b' | 'cop-cobre-balance' | 'ars' | 'eur' | 'mxn' | 'mxn-debit-card' | 'brl' | 'clp' | 'pen' | 'bob' | 'crc' | 'zar' | 'usd-peru' | 'usd-china' | 'usd-panama' | 'usd-hong-kong' | 'usd-el-salvador'};

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

export const countrySubdivision = z.object({code: z.string(), name: z.string()});

export const country = z.object({alpha2Code: z.string(), name: z.string(), subdivisions: z.array(countrySubdivision)});

export const countriesResponse = z.object({count: z.number(), countries: z.array(country)});

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
};

/**
 * Get supported countries and subdivisions for a fiat rail code
 * 
 * GET /api/utilities/countries/{fiatRailCode}
 */
export const getApiApiUtilitiesCountriesFiatRailCode = async (args: GetApiApiUtilitiesCountriesFiatRailCodeArgs, options?: GetApiApiUtilitiesCountriesFiatRailCodeOptions) => {
const {baseUrl = "https://api.muralpay.com", fetch: fetchFn = fetch, bearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/utilities/countries/${encodeURIComponent(String(args.fiatRailCode))}${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(countriesResponse, await res.json())
};