import {z} from 'zod'

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

export const bankAccount = z.object({bankName: z.string().optional(), bankCode: z.string().optional(), bankAccountNumber: z.string().optional(), bankAccountName: z.string().optional(), currency: z.literal("NGN").optional(), walletId: z.string().optional()});

export const transactionMetadata = z.object({id: z.string().optional(), orderId: z.string().optional(), bankCode: z.string().optional(), bankAccountName: z.string().optional(), bankAccountNumber: z.string().optional(), customerInternalFee: z.number().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional()});

export const transaction = z.object({id: z.string().optional(), walletId: z.string().optional(), ref: z.string().optional(), hash: z.string().optional(), amount: z.number().optional(), fees: z.number().optional(), currency: z.enum(["NGN", "KES", "BTC", "ZAR", "GHS", "USDT"]).optional(), type: z.enum(["WITHDRAWAL", "DEPOSIT"]).optional(), status: z.enum(["SUCCESS", "PENDING", "FAILED"]).optional(), autopayout: z.boolean().optional(), createdAt: z.string().optional(), updatedAt: z.string().optional(), metadata: transactionMetadata.optional()});

export const user = z.object({id: z.string().optional(), name: z.string().optional(), email: z.string().optional(), phone: z.string().optional(), businessName: z.string().optional(), emailVerified: z.boolean().optional(), kycInfo: z.object({address: z.string().optional(), phone: z.string().optional(), nationality: z.string().optional(), businessName: z.string().optional(), status: z.enum(["PENDING", "APPROVED", "REJECTED"]).optional()}).optional(), account: z.object({id: z.string().optional(), type: z.enum(["INDIVIDUAL", "BUSINESS", "ADMIN"]).optional(), status: z.enum(["ACTIVE", "INACTIVE"]).optional(), walletDetails: z.object({id: z.string().optional(), currency: z.enum(["NGN", "KES", "BTC", "USD", "USDT"]).optional(), balance: z.number().optional(), bankAccount: bankAccount.optional(), transactions: z.array(transaction).optional()}).optional(), ownerId: z.string().optional(), apiKey: z.string().optional(), totalSatsExchanged: z.number().optional(), webhook: z.object({id: z.string().optional(), url: z.string().optional(), secret: z.string().optional(), isActive: z.boolean().optional()}).optional(), settings: z.object({id: z.string().optional(), autopayout: z.boolean().optional(), language: z.enum(["EN", "FR", "ES"]).optional(), notification: z.object({email: z.boolean().optional(), sms: z.boolean().optional()}).optional()}).optional()}).optional()});

export const getApiUserResponse = z.object({status: z.string().optional(), data: user.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 user profile
 * 
 * GET /user
 * 
 * Also accepts auth: bearerAuth
 */
export const getApiUser = async (options?: GetApiUserOptions) => {
const {baseUrl = "https://staging.api.mavapay.co/api/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (ApiKeyAuth !== undefined) headers.set("X-API-KEY", ApiKeyAuth)

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