import {z} from 'zod'

export type ItemObject = {id?: string | undefined, name?: string | undefined, reference?: string | undefined, price?: number | undefined, quantity?: number | undefined, discount?: number | undefined, taxRate?: number | undefined, totalPrice?: number | undefined};

export type NotificationChannel = 'email' | 'sms' | 'whatsApp' | 'none';

export type BNPLStatus = 'opened' | 'started' | 'cancelled' | 'completed';

export type BNPLRequestObject = {reference?: string | undefined, amount?: number | undefined, currency: string, orderDetails?: Array<ItemObject> | undefined, deposit?: number | undefined, nbrInstallments: number, installmentIntervalDays?: number | undefined, startDate: string, customerId: string, customerMessage?: string | undefined, notificationChannel?: NotificationChannel | undefined, status?: BNPLStatus | undefined};

export type CreateApiBnplArgs = {'X-Amzn-Trace-Id'?: string | undefined, body: BNPLRequestObject};

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

export const itemObject = z.object({id: z.string().optional(), name: z.string().optional(), reference: z.string().optional(), price: z.number().optional(), quantity: z.number().optional(), discount: z.number().optional(), taxRate: z.number().optional(), totalPrice: z.number().optional()});

export const notificationChannel = z.enum(["email", "sms", "whatsApp", "none"]);

export const bNPLStatus = z.enum(["opened", "started", "cancelled", "completed"]);

export const paymentStatus = z.enum(["succeeded", "failed", "cancelled", "pending", "processing", "reversed", "authorized"]);

export const bNPLResponseObject = z.object({id: z.string().optional(), reference: z.string().optional(), amount: z.number().optional(), currency: z.string(), orderDetails: z.array(itemObject).optional(), deposit: z.number().optional(), nbrInstallments: z.number().int(), installmentIntervalDays: z.number().int().optional(), startDate: z.string(), customerId: z.string(), customerMessage: z.string().optional(), notificationChannel: notificationChannel.optional(), status: bNPLStatus.optional(), nextInstallmentDueDate: z.string().optional(), nbrPaidInstallments: z.number().int().optional(), nbrUnpaidInstallments: z.number().int().optional(), customerName: z.string().optional(), currentInstallmentStatus: paymentStatus.optional(), createdAt: z.string().optional(), updatedAt: z.string().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
};

/**
 * Create a BNPL
 * 
 * POST /bnpl
 */
export const createApiBnpl = async (args: CreateApiBnplArgs, options?: CreateApiBnplOptions) => {
const {baseUrl = "https://api.test.bictorys.com/pay/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args['X-Amzn-Trace-Id'] != null) headers.set("X-Amzn-Trace-Id", String(args['X-Amzn-Trace-Id']))
if (ApiKeyAuth !== undefined) headers.set("X-API-Key", ApiKeyAuth)

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