@iotize/ionic
Version:
Iotize specific building blocks on top of @ionic/angular.
165 lines • 22.9 kB
JavaScript
import { Injectable } from '@angular/core';
import { Platform } from '@ionic/angular';
import { toError } from '@iotize/app-common';
import { bufferToHexString, hexStringToBuffer, } from '@iotize/common/byte-converter';
import { NEVER, ReplaySubject, Subject } from 'rxjs';
import { catchError, filter, share, switchMap } from 'rxjs/operators';
import { debug } from '../../logger';
import { NFC } from '../../nfc';
import * as i0 from "@angular/core";
import * as i1 from "../../nfc";
import * as i2 from "@ionic/angular";
const TAG = 'NfcService';
export class NfcService {
nfc;
platform;
_tagDiscoveredListener = new Subject();
tagDiscoveredEvents = this._tagDiscoveredListener.pipe(switchMap((v) => v), share());
_ndefDiscoveredListener = new ReplaySubject();
ndefDiscoveredEvents = this._ndefDiscoveredListener.pipe(switchMap((v) => v));
_tapDeviceDiscoveredEvent = new ReplaySubject();
tapDeviceDiscoveredEvent = this._tapDeviceDiscoveredEvent.pipe(switchMap((v) => v));
_setupTapDeviceDiscoveredListenerPromise;
_setupTagDiscoveredListenerPromise;
constructor(nfc, platform) {
this.nfc = nfc;
this.platform = platform;
}
async write(data) {
try {
await this.nfc.write(data);
}
catch (err) {
if (err === 'cordova_not_available') {
err = new Error(`NFC is not available on this device`);
}
throw err;
}
}
async transceive(data) {
const rawResponse = await this.nfc.transceive(data);
const response = parseNFCTransceiveResponse(data, rawResponse);
console.debug(`NFC transceive ${bufferToHexString(data)} => 0x${bufferToHexString(response)}`);
return response;
}
async isEnabled() {
try {
return await this.nfc.enabled();
}
catch (err) {
console.error('NFC enabled error', err);
return false;
}
}
async setupTagDiscoveredListenerOnce() {
if (this._setupTagDiscoveredListenerPromise) {
return await this._setupTagDiscoveredListenerPromise;
}
else {
return await this.setupTagDiscoveredListener();
}
}
async setupTapDeviceDiscoveredListener() {
this._setupTapDeviceDiscoveredListenerPromise =
createCatchSafePromise((resolve, reject) => {
const tapDeviceDiscoveredListener = this.nfc.addTapDeviceListener(() => {
resolve();
}, (err) => {
reject(err);
});
this._tapDeviceDiscoveredEvent.next(tapDeviceDiscoveredListener);
}, 5000);
await this._setupTapDeviceDiscoveredListenerPromise;
}
async setupTagDiscoveredListener() {
this._setupTagDiscoveredListenerPromise = createCatchSafePromise((resolve, reject) => {
debug(TAG, 'Adding TAG discovered listener...');
this._tagDiscoveredListener.next(this.nfc
.addTagDiscoveredListener(() => {
debug(TAG, 'NFC Tag discovered listener OK!');
resolve();
}, (error) => {
debug(TAG, `NFC Tag discovered listener didn't start`, error);
reject(error);
})
.pipe(catchError((err) => {
const error = toError(err);
console.warn(`NFC Tag listener failed to initialize: ${error.message}`, err);
reject(error);
return NEVER;
}), filter((event) => !!event) // First event is undefined ...
));
}, 5000);
await this._setupTagDiscoveredListenerPromise;
}
async setupNdefListener() {
return await createCatchSafePromise((resolve, _reject) => {
this._ndefDiscoveredListener.next(this.nfc
.addNdefListener() // @warning callbacks are never called...
.pipe(catchError((err) => {
const error = toError(err);
console.warn(`NDEF listener failed to initialize: ${error.message}`, err);
return NEVER;
})));
resolve();
}, 5000);
}
async closeNFC() {
await this.nfc.close();
}
/**
* iOS specific commands
*/
async beginSessionFromTech(tech, alertMessage) {
if (!this.platform.is('ios')) {
return;
}
return this.nfc.beginSessionFromTech(tech, alertMessage);
}
async closeSession() {
return this.nfc.closeSession();
}
/** @nocollapse */ static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.14", ngImport: i0, type: NfcService, deps: [{ token: i1.NFC }, { token: i2.Platform }], target: i0.ɵɵFactoryTarget.Injectable });
/** @nocollapse */ static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.14", ngImport: i0, type: NfcService, providedIn: 'root' });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.14", ngImport: i0, type: NfcService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root',
}]
}], ctorParameters: () => [{ type: i1.NFC }, { type: i2.Platform }] });
function createCatchSafePromise(callback, timeout) {
return new Promise((resolve, reject) => {
if (timeout) {
setTimeout(() => {
reject(new Error(`Native code did not respond before timeout of ${timeout}ms`));
}, timeout);
}
try {
callback(resolve, reject);
}
catch (error) {
reject(error);
}
});
}
function parseNFCTransceiveResponse(frame, resultBufferOrString) {
if (!resultBufferOrString) {
return new Uint8Array(0);
}
if (typeof resultBufferOrString === 'object') {
if ('error' in resultBufferOrString) {
const errorString = resultBufferOrString.error === 'cordova_not_available'
? `NFC is not available`
: resultBufferOrString.error;
throw new Error(`Failed to NFC transceive frame 0x${bufferToHexString(frame)} (error: ${errorString})`);
}
}
if (typeof resultBufferOrString === 'string') {
return hexStringToBuffer(resultBufferOrString);
}
else {
return Buffer.from(resultBufferOrString);
}
}
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{ Injectable } from '@angular/core';\nimport { Platform } from '@ionic/angular';\nimport { toError } from '@iotize/app-common';\nimport {\n  bufferToHexString,\n  hexStringToBuffer,\n} from '@iotize/common/byte-converter';\nimport { EncryptionOptions } from '@iotize/tap/auth';\nimport { NEVER, Observable, ReplaySubject, Subject } from 'rxjs';\nimport { catchError, filter, share, switchMap, tap } from 'rxjs/operators';\nimport { debug } from '../../logger';\nimport { NFC, NdefEvent, NdefTag } from '../../nfc';\nimport { TagDiscoveredEvent } from './definitions';\n\nconst TAG = 'NfcService';\n\nexport interface RecoverableTapStateEvent {\n  tag: NdefTag;\n  tap: RecoverableTapState;\n}\n\nexport interface RecoverableTapState {\n  nfcPairingDone?: boolean;\n  encryption?: EncryptionOptions;\n}\n\n@Injectable({\n  providedIn: 'root',\n})\nexport class NfcService {\n  private _tagDiscoveredListener = new Subject<\n    Observable<TagDiscoveredEvent>\n  >();\n\n  readonly tagDiscoveredEvents: Observable<TagDiscoveredEvent> =\n    this._tagDiscoveredListener.pipe(\n      switchMap((v) => v),\n      share()\n    );\n\n  private readonly _ndefDiscoveredListener = new ReplaySubject<\n    Observable<NdefEvent>\n  >();\n\n  readonly ndefDiscoveredEvents = this._ndefDiscoveredListener.pipe(\n    switchMap((v) => v)\n  );\n\n  private _tapDeviceDiscoveredEvent = new ReplaySubject<\n    Observable<RecoverableTapStateEvent>\n  >();\n\n  readonly tapDeviceDiscoveredEvent = this._tapDeviceDiscoveredEvent.pipe(\n    switchMap((v) => v)\n  );\n\n  private _setupTapDeviceDiscoveredListenerPromise?: Promise<void>;\n  private _setupTagDiscoveredListenerPromise?: Promise<void>;\n\n  constructor(public nfc: NFC, private platform: Platform) {}\n\n  async write(data: any[]): Promise<void> {\n    try {\n      await this.nfc.write(data);\n    } catch (err) {\n      if (err === 'cordova_not_available') {\n        err = new Error(`NFC is not available on this device`);\n      }\n      throw err;\n    }\n  }\n\n  async transceive(data: Uint8Array): Promise<Uint8Array> {\n    const rawResponse = await this.nfc.transceive(data);\n    const response = parseNFCTransceiveResponse(data, rawResponse);\n    console.debug(\n      `NFC transceive ${bufferToHexString(data)} => 0x${bufferToHexString(\n        response\n      )}`\n    );\n    return response;\n  }\n\n  async isEnabled(): Promise<boolean> {\n    try {\n      return await this.nfc.enabled();\n    } catch (err) {\n      console.error('NFC enabled error', err);\n      return false;\n    }\n  }\n\n  async setupTagDiscoveredListenerOnce() {\n    if (this._setupTagDiscoveredListenerPromise) {\n      return await this._setupTagDiscoveredListenerPromise;\n    } else {\n      return await this.setupTagDiscoveredListener();\n    }\n  }\n\n  async setupTapDeviceDiscoveredListener(): Promise<void> {\n    this._setupTapDeviceDiscoveredListenerPromise =\n      createCatchSafePromise<void>((resolve, reject) => {\n        const tapDeviceDiscoveredListener = this.nfc.addTapDeviceListener(\n          () => {\n            resolve();\n          },\n          (err?: Error) => {\n            reject(err);\n          }\n        );\n        this._tapDeviceDiscoveredEvent.next(tapDeviceDiscoveredListener);\n      }, 5000);\n    await this._setupTapDeviceDiscoveredListenerPromise;\n  }\n\n  async setupTagDiscoveredListener(): Promise<void> {\n    this._setupTagDiscoveredListenerPromise = createCatchSafePromise<void>(\n      (resolve, reject) => {\n        debug(TAG, 'Adding TAG discovered listener...');\n        this._tagDiscoveredListener.next(\n          this.nfc\n            .addTagDiscoveredListener(\n              () => {\n                debug(TAG, 'NFC Tag discovered listener OK!');\n                resolve();\n              },\n              (error: Error) => {\n                debug(TAG, `NFC Tag discovered listener didn't start`, error);\n                reject(error);\n              }\n            )\n            .pipe(\n              catchError((err) => {\n                const error = toError(err);\n                console.warn(\n                  `NFC Tag listener failed to initialize: ${error.message}`,\n                  err\n                );\n                reject(error);\n                return NEVER;\n              }),\n              filter((event) => !!event) // First event is undefined ...\n            )\n        );\n      },\n      5000\n    );\n    await this._setupTagDiscoveredListenerPromise;\n  }\n\n  async setupNdefListener(): Promise<void> {\n    return await createCatchSafePromise<void>((resolve, _reject) => {\n      this._ndefDiscoveredListener.next(\n        this.nfc\n          .addNdefListener() // @warning callbacks are never called...\n          .pipe(\n            catchError((err) => {\n              const error = toError(err);\n              console.warn(\n                `NDEF listener failed to initialize: ${error.message}`,\n                err\n              );\n              return NEVER;\n            })\n          )\n      );\n      resolve();\n    }, 5000);\n  }\n\n  async closeNFC() {\n    await this.nfc.close();\n  }\n\n  /**\n   * iOS specific commands\n   */\n  async beginSessionFromTech(\n    tech: string,\n    alertMessage?: string\n  ): Promise<void> {\n    if (!this.platform.is('ios')) {\n      return;\n    }\n    return this.nfc.beginSessionFromTech(tech, alertMessage);\n  }\n\n  async closeSession(): Promise<void> {\n    return this.nfc.closeSession();\n  }\n}\n\nfunction createCatchSafePromise<T>(\n  callback: (\n    resolve: (value: T | PromiseLike<T>) => void,\n    reject: (reason?: any) => void\n  ) => void,\n  timeout?: number\n): Promise<T> {\n  return new Promise<T>((resolve, reject) => {\n    if (timeout) {\n      setTimeout(() => {\n        reject(\n          new Error(\n            `Native code did not respond before timeout of ${timeout}ms`\n          )\n        );\n      }, timeout);\n    }\n    try {\n      callback(resolve, reject);\n    } catch (error) {\n      reject(error);\n    }\n  });\n}\n\nfunction parseNFCTransceiveResponse(\n  frame: Uint8Array,\n  resultBufferOrString:\n    | ArrayBuffer\n    | string\n    | { error?: string }\n    | undefined\n    | null\n) {\n  if (!resultBufferOrString) {\n    return new Uint8Array(0);\n  }\n  if (typeof resultBufferOrString === 'object') {\n    if ('error' in resultBufferOrString) {\n      const errorString =\n        resultBufferOrString.error === 'cordova_not_available'\n          ? `NFC is not available`\n          : resultBufferOrString.error;\n      throw new Error(\n        `Failed to NFC transceive frame 0x${bufferToHexString(\n          frame\n        )} (error: ${errorString})`\n      );\n    }\n  }\n\n  if (typeof resultBufferOrString === 'string') {\n    return hexStringToBuffer(resultBufferOrString);\n  } else {\n    return Buffer.from(resultBufferOrString as ArrayBuffer);\n  }\n}\n"]}