import {z} from 'zod'

export type VerificationBankTransferCode = {id?: string | undefined, type?: ('BSB' | 'IFSC' | 'ROUTING_NUMBER' | 'SORT_CODE') | undefined};

export type VerificationAccount = {accountName?: string | undefined, accountType: 'SAVINGS' | 'CHECKING', accountNumber: string, bankTransferCode: VerificationBankTransferCode};

export type Verification = {accountId?: number | undefined, reason?: ('DATA_NOT_AVAILABLE' | 'ACCOUNT_HOLDER_MISMATCH' | 'FULL_ACCOUNT_NUMBER_AND_BANK_TRANSFER_CODE_NOT_AVAILABLE' | 'FULL_ACCOUNT_NUMBER_NOT_AVAILABLE' | 'BANK_TRANSFER_CODE_NOT_AVAILABLE' | 'EXPIRED' | 'DATA_MISMATCH' | 'INSTRUCTION_GENERATION_ERROR') | undefined, verificationStatus?: ('INITIATED' | 'DEPOSITED' | 'SUCCESS' | 'FAILED') | undefined, providerAccountId?: number | undefined, verificationType?: ('MATCHING' | 'CHALLENGE_DEPOSIT') | undefined, account?: VerificationAccount | undefined, verificationDate?: string | undefined, verificationId?: number | undefined};

export type VerificationRequest = {verification: Verification};

export type CreateApiVerificationArgs = {body: VerificationRequest};

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

export const verificationBankTransferCode = z.object({id: z.string().optional(), type: z.enum(["BSB", "IFSC", "ROUTING_NUMBER", "SORT_CODE"]).optional()});

export const verificationAccount = z.object({accountName: z.string().optional(), accountType: z.enum(["SAVINGS", "CHECKING"]), accountNumber: z.string().min(3).max(17), bankTransferCode: verificationBankTransferCode});

export const verification = z.object({accountId: z.number().int().optional(), reason: z.enum(["DATA_NOT_AVAILABLE", "ACCOUNT_HOLDER_MISMATCH", "FULL_ACCOUNT_NUMBER_AND_BANK_TRANSFER_CODE_NOT_AVAILABLE", "FULL_ACCOUNT_NUMBER_NOT_AVAILABLE", "BANK_TRANSFER_CODE_NOT_AVAILABLE", "EXPIRED", "DATA_MISMATCH", "INSTRUCTION_GENERATION_ERROR"]).optional(), verificationStatus: z.enum(["INITIATED", "DEPOSITED", "SUCCESS", "FAILED"]).optional(), providerAccountId: z.number().int().optional(), verificationType: z.enum(["MATCHING", "CHALLENGE_DEPOSIT"]).optional(), account: verificationAccount.optional(), verificationDate: z.string().optional(), verificationId: z.number().int().optional()});

export const verificationResponse = z.object({verification: z.array(verification).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
};

/**
 * Initiaite Matching Service and Challenge Deposit
 * 
 * POST /verification
 */
export const createApiVerification = async (args: CreateApiVerificationArgs, options: CreateApiVerificationOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/json")
headers.set('accept', "application/json;charset=UTF-8")

const url = `${baseUrl.replace(/\/+$/, '')}/verification${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(verificationResponse, await res.json())
};