import {z} from 'zod'

export type GetApiV1AccountsArgs = {sessionId?: string | undefined, authorizationId?: string | undefined};

export type GetApiV1AccountsOptions = {baseUrl: string, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const transaction = z.object({amount: z.number().nullable().optional(), categoryId: z.number().int().optional(), title: z.string().nullable().optional(), date: z.string().nullable().optional(), info: z.string().nullable().optional(), transactionId: z.string().nullable().optional(), partner: z.string().nullable().optional()});

export const currency = z.object({code: z.string().nullable().optional(), creditTurnover: z.number().nullable().optional(), debitTurnover: z.number().nullable().optional(), endBalance: z.number().nullable().optional(), startBalance: z.number().nullable().optional(), transactions: z.array(transaction).nullable().optional()});

export const accountHolder = z.object({name: z.string().nullable().optional()});

export const account = z.object({accountNumber: z.string().nullable().optional(), bank: z.string().nullable().optional(), country: z.string().nullable().optional(), currencies: z.array(currency).nullable().optional(), holders: z.array(accountHolder).nullable().optional(), iban: z.string().nullable().optional(), isJointOwnership: z.boolean().nullable().optional(), isSharedOwnership: z.boolean().nullable().optional(), periodEnd: z.string().nullable().optional(), periodStart: z.string().nullable().optional()});

export const accountsResponse = z.object({accounts: z.array(account).nullable().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 list of accounts.
 * 
 * GET /v1/accounts
 */
export const getApiV1Accounts = async (args: GetApiV1AccountsArgs, options: GetApiV1AccountsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.sessionId != null) headers.set("sessionId", String(args.sessionId))
if (args.authorizationId != null) headers.set("authorizationId", String(args.authorizationId))
if (Bearer !== undefined) headers.set("Authorization", Bearer)

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