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Phase 4: history view with reverse geocoding

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3-section layout (15/70/15) for browsing recorded events.
Reverse-geocodes coordinates via Photon API with Haversine
distance check and address caching. Also adds simulator GPS
polling fallback (Position.getInfo) since the simulator does
not fire location event callbacks.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
EiSiMo 2026-04-13 14:31:44 +02:00
parent 025d3007db
commit 902121bd42
7 changed files with 368 additions and 11 deletions
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30
source/GpsService.mc
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@ -2,21 +2,22 @@ import Toybox.Lang;
import Toybox.Position;
import Toybox.Timer;
// Single-shot GPS acquisition with a hard timeout. Caller supplies
// a callback that fires exactly once with either a position fix or
// null (if nothing usable was received before the timeout). Accuracy
// shortcut: if the fix already hits Config.GPS_TARGET_ACCURACY_M we
// stop waiting even if the timeout hasn't expired.
// Single-shot GPS acquisition with a hard timeout. Uses both
// enableLocationEvents (fires on real hardware) and a polling
// fallback via Position.getInfo() (works in the simulator where
// "Set Position" doesn't trigger location events).
class GpsService {
private var _callback as Method(result as Dictionary or Null) as Void;
private var _timer as Timer.Timer;
private var _pollTimer as Timer.Timer;
private var _finished as Boolean = false;
private var _bestFix as Dictionary or Null = null;
function initialize(callback as Method(result as Dictionary or Null) as Void) {
_callback = callback;
_timer = new Timer.Timer();
_pollTimer = new Timer.Timer();
}
function start() as Void {
@ -24,20 +25,34 @@ class GpsService {
Position.LOCATION_CONTINUOUS,
method(:_onPosition)
);
// Poll Position.getInfo() every 500ms as fallback for simulator.
_pollTimer.start(method(:_poll), 500, true);
_timer.start(method(:_onTimeout), Config.GPS_TIMEOUT_MS, false);
}
function _poll() as Void {
if (_finished) { return; }
var info = Position.getInfo();
if (info != null && info.position != null) {
_processInfo(info);
}
}
function _onPosition(info as Position.Info) as Void {
if (_finished) { return; }
_processInfo(info);
}
private function _processInfo(info as Position.Info) as Void {
if (info == null || info.position == null) { return; }
var degrees = info.position.toDegrees();
var acc = (info.accuracy != null) ? info.accuracy.toFloat() : null;
var acc = (info.accuracy != null) ? info.accuracy : null;
_bestFix = {
"lat" => degrees[0].toFloat(),
"lon" => degrees[1].toFloat(),
"acc" => acc
"acc" => (acc != null) ? acc.toFloat() : null
};
// Good enough → stop early.
@ -54,6 +69,7 @@ class GpsService {
if (_finished) { return; }
_finished = true;
_timer.stop();
_pollTimer.stop();
Position.enableLocationEvents(Position.LOCATION_DISABLE, method(:_onPosition));
_callback.invoke(result);
}