import { Injectable } from '@angular/core';
import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
import { Observable } from 'rxjs/Observable';

export type IMakePayments =
  | 'This device can make payments and has a supported card'
  | 'This device cannot make payments.'
  | 'This device can make payments but has no supported cards';
export type IShippingType = 'shipping' | 'delivery' | 'store' | 'service';
export type IBillingRequirement =
  | 'none'
  | 'all'
  | 'postcode'
  | 'name'
  | 'email'
  | 'phone';
export type ITransactionStatus =
  | 'success'
  | 'failure'
  | 'invalid-billing-address'
  | 'invalid-shipping-address'
  | 'invalid-shipping-contact'
  | 'require-pin'
  | 'incorrect-pin'
  | 'locked-pin';
export type ICompleteTransaction = 'Payment status applied.';
export type IUpdateItemsAndShippingStatus =
  | 'Updated List Info'
  | 'Did you make a payment request?';

export interface IPaymentResponse {
  billingNameFirst?: string;
  billingNameMiddle?: string;
  billingNameLast?: string;
  billingEmailAddress?: string;
  billingSupplementarySubLocality?: string;
  billingAddressStreet?: string;
  billingAddressCity?: string;
  billingAddressState?: string;
  billingPostalCode?: string;
  billingCountry?: string;
  billingISOCountryCode?: string;

  shippingNameFirst?: string;
  shippingNameMiddle?: string;
  shippingNameLast?: string;
  shippingEmailAddress?: string;
  shippingPhoneNumber?: string;
  shippingSupplementarySubLocality?: string;
  shippingAddressStreet?: string;
  shippingAddressCity?: string;
  shippingAddressState?: string;
  shippingPostalCode?: string;
  shippingCountry?: string;
  shippingISOCountryCode?: string;

  paymentData: string;
  transactionIdentifier: string;
  paymentMethodDisplayName?: string;
  paymentMethodNetwork?: string;
  paymentMethodTypeCard?: string;
}

export interface IOrderItem {
  label: string;
  amount: number;
}
export interface IShippingMethod {
  identifier: string;
  label: string;
  detail: string;
  amount: number;
}
export interface IOrderItemsAndShippingMethods {
  items: IOrderItem[];
  shippingMethods?: IShippingMethod[];
}

export interface IOrder extends IOrderItemsAndShippingMethods {
  merchantIdentifier: string;
  currencyCode: string;
  countryCode: string;
  billingAddressRequirement?: IBillingRequirement | IBillingRequirement[];
  shippingAddressRequirement?: IBillingRequirement | IBillingRequirement[];
  shippingType?: IShippingType;
}

export interface ISelectedShippingContact {
  shippingAddressCity: string;
  shippingAddressState: string;
  shippingPostalCode: string;
  shippingISOCountryCode: string;
}

/**
 * @name Apple Pay
 * @description
 * A dependency free Cordova plugin to provide Apple Pay functionality.
 *
 * @usage
 * ```typescript
 * import { ApplePay } from '@ionic-native/apple-pay';
 *
 *
 * constructor(private applePay: ApplePay) { }
 *
 * ...
 * async applePay() {
 *   // This block is optional -- only if you need to update order items/shipping
 *   // methods in response to shipping method selections
 *   this.applePay.startListeningForShippingContactSelection()
 *     .subscribe(async selection => {
 *       try {
 *         await this.applePay.updateItemsAndShippingMethods({
 *           items: getFromSelection(selection),
 *           shippingMethods: getFromSelection(selection),
 *         });
 *       }
 *       catch {
 *         // handle update items error
 *       }
 *     });
 *
 *   try {
 *     const applePayTransaction = await this.applePay.makePaymentRequest({
 *       items,
 *       shippingMethods,
 *       merchantIdentifier,
 *       currencyCode,
 *       countryCode,
 *       billingAddressRequirement: ['name', 'email', 'phone'],
 *       shippingAddressRequirement: 'none',
 *       shippingType: 'shipping'
 *     });
 *
 *     const transactionStatus = await completeTransactionWithMerchant(applePayTransaction);
 *     await this.applePay.completeLastTransaction(transactionStatus);
 *   } catch {
 *     // handle payment request error
 *     // Can also handle stop complete transaction but these should normally not occur
 *   }
 *
 *   // only if you started listening before
 *   await this.applePay.stopListeningForShippingContactSelection();
 * }
 * ```
 */
@Plugin({
  pluginName: 'ApplePay',
  plugin: 'cordova-plugin-applepay',
  pluginRef: 'ApplePay',
  repo: 'https://github.com/samkelleher/cordova-plugin-applepay',
  platforms: ['iOS']
})
@Injectable()
export class ApplePay extends IonicNativePlugin {
  /**
   * Detects if the current device supports Apple Pay and has any capable cards registered.
   * @return {Promise<IMakePayments>} Returns a promise
   *
   * @usage
   * try {
   *   const message = await this.applePay.canMakePayments();
   *   // Apple Pay is enabled and a supported card is setup. Expect:
   *   // 'This device can make payments and has a supported card'
   * } catch (message) {
   *   // There is an issue, examine the message to see the details, will be:
   *   // 'This device cannot make payments.''
   *   // 'This device can make payments but has no supported cards'
   * }
   */
  @Cordova({
    otherPromise: true
  })
  canMakePayments(): Promise<IMakePayments> {
    return;
  }

  /**
   * Starts listening for shipping contact selection changes
   * Any time the user selects shipping contact, this callback will fire.
   * You *must* call `updateItemsAndShippingMethods` in response or else the
   * user will not be able to process payment.
   * @return {Observable<ISelectedShippingContact>} emits with shipping contact information on
   *   shipping contact selection changes
   */
  @Cordova({
    observable: true,
    clearFunction: 'stopListeningForShippingContactSelection'
  })
  startListeningForShippingContactSelection(): Observable<
    ISelectedShippingContact
  > {
    return;
  }

  /**
   * Stops listening for shipping contact selection changes
   * @return {Promise} whether stop listening was successful. This should
   *   really only fail if this is called without starting listening
   */
  @Cordova({
    otherPromise: true
  })
  stopListeningForShippingContactSelection(): Promise<boolean> {
    return;
  }

  /**
   * Update the list of pay sheet items and shipping methods in response to
   * a shipping contact selection event. This *must* be called in response to
   * any shipping contact selection event or else the user will not be able
   * to complete a transaction on the pay sheet. Do not call without
   * subscribing to shipping contact selection events first
   *
   * @param {IOrderItemsAndShippingMethods} list `items` and `shippingMethods` properties.
   * @returns {Promise<IUpdateItemsAndShippingStatus>}
   *
   * @usage
   * this.applePay.startListeningForShippingContactSelection().pluck('shippingAddressState').subscribe(shippingAddressState => {
   *   let shippingMethods;
   *   if ('AK' === shippingAddressState) {
   *     shippingMethods = [{
   *         identifier: 'Alaska',
   *         label: 'Alaska',
   *         detail: 'For shipping to Alaska',
   *         amount: 9.99
   *     },];
   *   } else {
   *     shippingMethods = [{
   *         identifier: 'Continental',
   *         label: 'Continental',
   *         detail: 'For shipping Continentally',
   *         amount: 5.99
   *     }];
   *   }
   *   this.paySheetItems.shippingCost = {
   *      label: 'Shipping Cost',
   *      amount: shippingMethod[0].amount
   *   };
   *   this.applePay.updateItemsAndShippingMethods(this.paySheetItems, shippingMethods);
   * });
   */
  @Cordova({
    otherPromise: true
  })
  updateItemsAndShippingMethods(
    list: IOrderItemsAndShippingMethods
  ): Promise<IUpdateItemsAndShippingStatus> {
    return;
  }

  /**
   * Request a payment with Apple Pay
   *
   * @param {IOrder} order
   * @return {Promise<IPaymentResponse>} Returns a promise that resolves when something happens
   *
   * @usage
   * try {
   *   const paymentResponse = this.applePay.makePaymentRequest({
   *     items: [
   *       {
   *         label: '3 x Basket Items',
   *         amount: 49.99
   *       },
   *       {
   *         label: 'Next Day Delivery',
   *         amount: 3.99
   *       },
   *       {
   *         label: 'My Fashion Company',
   *         amount: 53.98
   *       }
   *     ],
   *     shippingMethods: [
   *       {
   *         identifier: 'NextDay',
   *         label: 'NextDay',
   *         detail: 'Arrives tomorrow by 5pm.',
   *         amount: 3.99
   *       },
   *       {
   *         identifier: 'Standard',
   *         label: 'Standard',
   *         detail: 'Arrive by Friday.',
   *         amount: 4.99
   *       },
   *       {
   *         identifier: 'SaturdayDelivery',
   *         label: 'Saturday',
   *         detail: 'Arrive by 5pm this Saturday.',
   *         amount: 6.99
   *       }
   *     ],
   *     merchantIdentifier: 'merchant.apple.test',
   *     currencyCode: 'GBP',
   *     countryCode: 'GB',
   *     billingAddressRequirement: 'none',
   *     shippingAddressRequirement: 'none',
   *     shippingType: 'shipping',
   *   });
   *
   *   // The user has authorized the payment.
   *
   *   // Handle the token, asynchronously, i.e. pass to your merchant bank to
   *   // action the payment, then once finished, depending on the outcome:
   *
   *   // Here is an example implementation:
   *
   *   const captureStatus = await MyPaymentProvider.authorizeApplePayToken(paymentResponse.paymentData);
   *   await this.applePay.completeLastTransaction('success');
   * }
   * catch (err) {
   *   if (isPaymentAuthError(err)) {
   *     this.completeLastTransaction('failure');
   *   }
   *   else {
   *     // Failed to open pay sheet or user canceled payment
   *   }
   * }
   */
  @Cordova({
    otherPromise: true
  })
  makePaymentRequest(order: IOrder): Promise<IPaymentResponse> {
    return;
  }

  /**
   * Once the makePaymentRequest has been resolved successfully, the device will be waiting for a completion event.
   * This means, that the application must proceed with the token authorization and return a success, failure,
   * or other validation error. Once this has been passed back, the Apple Pay sheet will be dismissed via an animation.
   *
   * @param {ITransactionStatus} complete
   * @return {Promise<ICompleteTransaction>} Returns a promise that resolves after confirmation of payment authorization completion
   *
   */
  @Cordova({
    otherPromise: true
  })
  completeLastTransaction(
    complete: ITransactionStatus
  ): Promise<ICompleteTransaction> {
    return;
  }
}