forked from c-fu/arah2
araharah-executor
9552e7e4ab
- types.ts: the shared Fix shape + LocationState machine (type-only, D-04/D-05/D-07) - telegram.ts: version-gated LocationManager init/getLocation, hard 8s timeout (Pitfall 3), null-safe telegramLocationSupported (plain browser/Desktop = false, not TypeError), looksStale + haversine + the Android nudge (issue #56 navbar read DISCARDED, then retry) - webview.ts: one-shot geolocation read, maximumAge: 0 (freshness axis), 8s timeout - chat-pin.ts: bounded 60s poll of GET /api/location (Bearer token) + POST /api/location-fallback throw-on-fail so the ASK VIA CHAT handler can revalidate (D-03) - telegram/webapp.ts created early (Rule 3: task 1 imports TelegramWebAppLike from task 3's file; declared the narrow hand-rolled interface now, verbatim per plan)
45 lines
1.9 KiB
TypeScript
45 lines
1.9 KiB
TypeScript
/*
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* webview.ts — source 2: navigator.geolocation inside the WebView, and the
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* Android freshness nudge's reading hand (D-04, D-05).
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* -------------------------------------------------------------------
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* maximumAge: 0 is load-bearing — D-05 requires the freshest fix, and a
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* cached position would silently defeat the freshness axis (the whole
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* point of the nudge is to force a NEW read, not to re-read a cache).
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* Success AND timeout both resolve; the error callback resolves null so
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* the chain advances instead of rejecting. Timeout present for the same
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* reason as the telegram wrapper: wedging ACQUIRING is never acceptable.
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*/
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import type { Fix } from "./types.ts";
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export function webviewLocationSupported(): boolean {
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return typeof navigator !== "undefined" && typeof navigator.geolocation?.getCurrentPosition === "function";
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}
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export function readWebviewFix(options: { timeoutMs?: number; nowMs?: () => number } = {}): Promise<Fix | null> {
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const timeoutMs = options.timeoutMs ?? 8000;
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if (!webviewLocationSupported()) return Promise.resolve(null); // Desktop Telegram, plain browsers without permission
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return new Promise((resolve) => {
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let settled = false;
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const done = (fix: Fix | null): void => {
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if (settled) return;
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settled = true;
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clearTimeout(timer);
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resolve(fix);
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};
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const timer = setTimeout(() => done(null), timeoutMs);
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navigator.geolocation.getCurrentPosition(
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(pos) =>
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done({
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lat: pos.coords.latitude,
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lng: pos.coords.longitude,
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accuracyM: pos.coords.accuracy ?? null,
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headingDeg: pos.coords.heading ?? null,
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ts: (options.nowMs ?? Date.now)(),
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source: "webview",
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}),
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() => done(null), // denial / unavailability = null; the chain's normal signal (no error object escapes)
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{ enableHighAccuracy: true, timeout: timeoutMs, maximumAge: 0 },
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);
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});
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}
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