@awarns/wifi/internal/provider.js

AwarNS Framework package that allows to scan for nearby Wi-Fi access points

import { ProviderInterrupter } from '@awarns/core/providers';
import { WifiScan, WifiScanType } from './scan';
import { FingerprintGrouping, getWifiScanProvider as getNativeProvider, } from 'nativescript-context-apis/wifi';
import { firstValueFrom, map, of, Subject, takeUntil, timeout } from 'rxjs';
export class WifiScanProvider {
    constructor(ensureIsNew, timeout, nativeProvider = getNativeProvider) {
        this.ensureIsNew = ensureIsNew;
        this.timeout = timeout;
        this.nativeProvider = nativeProvider;
    }
    get provides() {
        return WifiScanType;
    }
    async checkIfIsReady() {
        const isReady = await this.nativeProvider().isReady();
        if (!isReady) {
            throw wifiScanProviderNotReadyErr;
        }
    }
    async prepare() {
        return this.nativeProvider().prepare();
    }
    next() {
        const interrupter = new ProviderInterrupter();
        const scanResult = this.obtainWifiScan(interrupter);
        return [scanResult, () => interrupter.interrupt()];
    }
    obtainWifiScan(interrupter) {
        const interrupted$ = new Subject();
        interrupter.interruption = () => {
            interrupted$.next();
            interrupted$.complete();
        };
        return firstValueFrom(this.nativeProvider()
            .wifiFingerprintStream({
            ensureAlwaysNew: this.ensureIsNew,
            grouping: FingerprintGrouping.NONE,
            continueOnFailure: false,
        })
            .pipe(takeUntil(interrupted$), timeout({ each: this.timeout, with: () => of(null) }), map((fingerprint) => scanFromFingerprint(fingerprint))));
    }
}
function scanFromFingerprint(fingerprint) {
    const { seen, isNew, timestamp } = fingerprint;
    return new WifiScan(seen, isNew, timestamp);
}
export const wifiScanProviderNotReadyErr = new Error("Wifi scan provider is not ready. Perhaps permissions haven't been granted, location services have been disabled or wifi is turn off");
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