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web CORS proxy workaround for fetching file

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This commit is contained in:
Jonas Bark
2025-10-19 09:56:39 +02:00
parent f3c7bbbcbf
commit 3b9ceea64b
1 changed files with 22 additions and 22 deletions
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44
lib/bluetooth/devices/elite/elite_sterzo.dart
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@@ -1,5 +1,4 @@
import 'dart:convert';
import 'dart:typed_data';
import 'package:dartx/dartx.dart';
import 'package:flutter/foundation.dart';
@@ -35,9 +34,9 @@ class EliteSterzo extends BaseDevice {
if (service == null) {
throw Exception('Elite Sterzo service not found');
}
_serviceUuid = service.uuid;
// Find characteristics
final challengeChar = service.characteristics.firstOrNullWhere(
(e) => e.uuid == SterzoConstants.CHALLENGE_CODE_CHARACTERISTIC_UUID,
@@ -93,7 +92,7 @@ class EliteSterzo extends BaseDevice {
// Challenge is in bytes 2-3 (big-endian)
final challenge = (bytes[2] << 8) | bytes[3];
_latestChallenge = challenge;
actionStreamInternal.add(LogNotification('Elite Sterzo: Received challenge code: $challenge'));
// Respond to challenge
@@ -111,7 +110,7 @@ class EliteSterzo extends BaseDevice {
// Get response codes for the challenge
final challengeCodes = _getChallengeResponse(_latestChallenge!);
// Send challenge response
await UniversalBle.write(
device.deviceId,
@@ -159,7 +158,7 @@ class EliteSterzo extends BaseDevice {
} else {
// On native platforms, try to load from cache first
_challengeCodesData = await _loadCachedChallengeCodes();
if (_challengeCodesData == null) {
// Cache miss - fetch from HTTP and cache it
_challengeCodesData = await _fetchChallengeCodes();
@@ -174,17 +173,18 @@ class EliteSterzo extends BaseDevice {
}
static Future<Uint8List?> _fetchChallengeCodes() async {
final url = kIsWeb
? 'https://corsproxy.io/${SterzoConstants.CHALLENGE_CODES_URL}'
: SterzoConstants.CHALLENGE_CODES_URL;
try {
final response = await http.get(
Uri.parse(SterzoConstants.CHALLENGE_CODES_URL),
);
final response = await http.get(Uri.parse(url));
if (response.statusCode == 200) {
return response.bodyBytes;
}
} catch (e) {
if (kDebugMode) {
print('Failed to fetch challenge codes: $e');
print('Failed to fetch challenge codes for URL $url: $e');
}
}
return null;
@@ -194,7 +194,7 @@ class EliteSterzo extends BaseDevice {
try {
final prefs = await SharedPreferences.getInstance();
final cached = prefs.getString(SterzoConstants.CACHE_KEY);
if (cached != null) {
// Decode from base64
return base64Decode(cached);
@@ -223,19 +223,19 @@ class EliteSterzo extends BaseDevice {
if (bytes.length >= 4) {
// Steering angle is a 32-bit float (little-endian)
final angle = ByteData.sublistView(bytes).getFloat32(0, Endian.little);
actionStreamInternal.add(LogNotification('Steering angle: ${angle.toStringAsFixed(1)}°'));
// Determine steering direction based on angle threshold
final button = _getSteeringButton(angle);
if (button != null) {
handleButtonsClicked([button]);
} else if (_getSteeringButton(_lastAngle) != null) {
// Release button if we were steering but now we're centered
handleButtonsClicked([]);
}
_lastAngle = angle;
}
}
@@ -260,7 +260,7 @@ class EliteSterzo extends BaseDevice {
if (index >= 0 && index < _challengeCodesData!.length - 1) {
return [_challengeCodesData![index], _challengeCodesData![index + 1]];
}
// Fallback for out of range challenges
return [0x96, 0x96];
}
@@ -268,24 +268,24 @@ class EliteSterzo extends BaseDevice {
class SterzoConstants {
static const String DEVICE_NAME = "STERZO";
// Elite Sterzo Smart characteristic UUIDs
static const String MEASUREMENT_CHARACTERISTIC_UUID = "347b0030-7635-408b-8918-8ff3949ce592";
static const String CONTROL_POINT_CHARACTERISTIC_UUID = "347b0031-7635-408b-8918-8ff3949ce592";
static const String CHALLENGE_CODE_CHARACTERISTIC_UUID = "347b0032-7635-408b-8918-8ff3949ce592";
// Service UUID pattern (matches Elite devices)
static const String SERVICE_UUID = "347b0001-7635-408b-8918-8ff3949ce592";
// Steering angle threshold in degrees to trigger steering action
static const double STEERING_THRESHOLD = 5.0;
static const int RECONNECT_DELAY = 5; // seconds between reconnection attempts
// URL to fetch challenge codes
static const String CHALLENGE_CODES_URL =
static const String CHALLENGE_CODES_URL =
'https://github.com/zacharyedwardbull/pycycling/raw/refs/heads/master/pycycling/data/sterzo-challenge-codes.dat';
// Cache key for SharedPreferences
static const String CACHE_KEY = 'elite_sterzo_challenge_codes';
}