import {z} from 'zod'

export type EdubankTransactionItems = {item: string, amount: string, reference?: string | undefined, note?: string | undefined};

export type EdubankLateFee = {mode: string, amount: string};

export type EdubankInterest = {mode: string, amount: string};

export type EdubankDiscount = {mode: string, date_1: string, amount_1: number, date_2?: string | undefined, amount_2?: number | undefined, date_3?: string | undefined, amount_3?: number | undefined};

export type EdubankTransactionDetails = {amount: number, due_date: string, payment_limit_date: string, body_instructions?: Array<string> | undefined, late_fee?: EdubankLateFee | undefined, interest?: EdubankInterest | undefined, discount?: EdubankDiscount | undefined};

export type EdubankSplit = {recipient: string, amount?: number | undefined, percentage: string, processing_fee: string};

export type EdubankBuyersAddress = {city: string, additional_information?: string | undefined, number: string, state_code: string, street: string, neighborhood: string, zip: string, country_code: 'BR'};

export type EdubankBuyerDto = {first_name: string, last_name: string, email?: string | undefined, taxpayer_id: string, birthdate?: string | undefined, phone_number?: string | undefined, address: EdubankBuyersAddress};

export type EdubankTransactionDto = {reference_id: string, transaction_limit_date: string, transaction_description?: string | undefined, sandbox: boolean, is_pinpad_transaction?: boolean | undefined, allows_pix: boolean, allows_credit_card: boolean, allows_bank_slip: boolean, transaction_items?: Array<EdubankTransactionItems> | undefined, transaction_details: EdubankTransactionDetails, split_rules?: Array<EdubankSplit> | undefined, notification_url: string, buyer: EdubankBuyerDto};

export type CreateApiV1TransactionsArgs = {body: EdubankTransactionDto};

export type CreateApiV1TransactionsOptions = {baseUrl: string, xApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const edubankTransactionCreationResponse = z.object({transaction_id: z.string(), amount_to_pay_today: z.number().optional(), expires_in: z.string().optional(), status_code: z.number()});

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 transaction
 * 
 * POST /v1/transactions
 * 
 * Also accepts auth: authorization, authorization
 */
export const createApiV1Transactions = async (args: CreateApiV1TransactionsArgs, options: CreateApiV1TransactionsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, xApiKey} = options ?? {}

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

if (xApiKey !== undefined) headers.set("x-api-key", xApiKey)

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