import {
  CreatePaymentArgs,
  CreatePaymentResponse,
  DisablePaymentResponse,
  GetPaymentResponse,
} from './types'

export class BeamCheckout {
  constructor(merchantId: string, apiKey: string) {
    this.merchantId = merchantId
    this.apiKey = apiKey
  }

  private merchantId: string
  private apiKey: string

  private getHeaders() {
    return {
      Authorization: `Basic ${Buffer.from(`${this.merchantId}:${this.apiKey}`).toString('base64')}`,
      'Content-Type': 'application/json',
    }
  }

  /** Create payment */
  async createPayment(args: CreatePaymentArgs): Promise<CreatePaymentResponse> {
    const res = await fetch(
      `https://api.beamcheckout.com/purchases/${this.merchantId}`,
      {
        method: 'POST',
        headers: this.getHeaders(),
        body: JSON.stringify(args),
      },
    )

    return await res.json()
  }

  /** Get payment */
  async getPayment(purchaseId: string): Promise<GetPaymentResponse> {
    const res = await fetch(
      `https://api.beamcheckout.com/purchases/${this.merchantId}/${purchaseId}/detail`,
      {
        method: 'GET',
        headers: this.getHeaders(),
      },
    )

    return await res.json()
  }

  /**
   * Disable payment
   * @param {string} purchaseId - The purchase ID
   * */
  async disablePayment(purchaseId: string): Promise<DisablePaymentResponse> {
    const res = await fetch(
      `https://api.beamcheckout.com/purchases/${this.merchantId}/${purchaseId}/disable`,
      {
        method: 'POST',
        headers: this.getHeaders(),
      },
    )

    return await res.json()
  }

  //TODO Refunds
}