import {z} from 'zod'

export type GetApiV2AccountsIcanArgs = {ican: number};

export type GetApiV2AccountsIcanOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const localDetails = z.object({nsc: z.string().optional(), accountNumber: z.string().optional(), bic: z.string().optional(), iban: z.string().optional()});

export const internationalDetails = z.object({status: z.enum(["NONE", "REQUESTED", "LIVE"]).optional(), swiftCode: z.string().optional(), iban: z.string().optional()});

export const accountDetails = z.object({localDetails: localDetails.optional(), internationalDetails: internationalDetails.optional()});

export const accountV2 = z.object({ican: z.number().int().optional(), name: z.string().optional(), currency: z.string().optional(), balance: z.number().int().optional(), status: z.enum(["LIVE", "BREXIT_MIGRATED"]).optional(), accountDetails: accountDetails.optional(), defaultAccount: z.boolean().optional(), directDebitsAllowed: z.boolean().optional(), fopOnly: 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
};

/**
 * Get details of an account (V2)
 * 
 * GET /v2/accounts/{ican}
 */
export const getApiV2AccountsIcan = async (args: GetApiV2AccountsIcanArgs, options?: GetApiV2AccountsIcanOptions) => {
const {baseUrl = "https://api.fire.com/business", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/accounts/${encodeURIComponent(String(args.ican))}${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(accountV2, await res.json())
};