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crowd-funder-for-time-pwa
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Remove temporary alert() debug calls from ImageMethodDialog camera preview 

- Cleaned up all alert() calls used for diagnosing camera access issues on mobile browsers
- Camera preview now starts without pop-up interruptions
- Retained logging and user notifications for error handling and diagnostics
sql-wa-sqlite
Matt Raymer 5 months ago
parent
913f11b66c
commit
8ac728d488
2 changed files with 185 additions and 18 deletions
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  1. 108
      src/components/ImageMethodDialog.vue
  2. 95
      src/services/QRScanner/WebInlineQRScanner.ts

108
src/components/ImageMethodDialog.vue
View File

@ -1,6 +1,37 @@
<template>
<div v-if="visible" class="dialog-overlay z-[60]">
<div class="dialog relative">
<!-- Diagnostic Panel -->
<div
v-if="showDiagnostics"
class="absolute top-0 left-0 right-0 bg-black/80 text-white text-xs p-2 z-20 overflow-auto max-h-[30vh]"
>
<div class="grid grid-cols-2 gap-2">
<div>
<p><strong>Camera State:</strong> {{ cameraState }}</p>
<p><strong>State Message:</strong> {{ cameraStateMessage || 'None' }}</p>
<p><strong>Error:</strong> {{ error || 'None' }}</p>
<p><strong>Preview Active:</strong> {{ showCameraPreview ? 'Yes' : 'No' }}</p>
<p><strong>Stream Active:</strong> {{ !!cameraStream ? 'Yes' : 'No' }}</p>
</div>
<div>
<p><strong>Browser:</strong> {{ userAgent }}</p>
<p><strong>HTTPS:</strong> {{ isSecureContext ? 'Yes' : 'No' }}</p>
<p><strong>MediaDevices:</strong> {{ hasMediaDevices ? 'Yes' : 'No' }}</p>
<p><strong>GetUserMedia:</strong> {{ hasGetUserMedia ? 'Yes' : 'No' }}</p>
<p><strong>Platform:</strong> {{ platformCapabilities.isMobile ? 'Mobile' : 'Desktop' }}</p>
</div>
</div>
</div>
<!-- Toggle Diagnostics Button -->
<button
@click="toggleDiagnostics"
class="absolute top-2 right-2 bg-black/50 text-white px-2 py-1 rounded text-xs z-30"
>
{{ showDiagnostics ? 'Hide Diagnostics' : 'Show Diagnostics' }}
</button>
<div class="text-lg text-center font-bold relative">
<h1 id="ViewHeading" class="text-center font-bold">
<span v-if="uploading">Uploading Image&hellip;</span>
@ -16,6 +47,28 @@
</div>
</div>
<!-- FEEDBACK: Show if camera preview is not visible after mounting -->
<div v-if="!showCameraPreview && !blob && isRegistered" class="bg-red-100 text-red-700 border border-red-400 rounded px-4 py-3 my-4 text-sm">
<strong>Camera preview not started.</strong>
<div v-if="cameraState === 'off'">
<span v-if="platformCapabilities.isMobile">
<b>Note:</b> This mobile browser may not support direct camera access, or the app is treating it as a native app.<br>
<b>Tip:</b> Try using a desktop browser, or check if your browser supports camera access for web apps.<br>
<b>Developer:</b> The platform detection logic may be skipping camera preview for mobile browsers. <br>
<b>Action:</b> Review <code>platformCapabilities.isMobile</code> and ensure web browsers on mobile are not treated as native apps.
</span>
<span v-else>
<b>Tip:</b> Your browser supports camera APIs, but the preview did not start. Try refreshing the page or checking browser permissions.
</span>
</div>
<div v-else-if="cameraState === 'error'">
<b>Error:</b> {{ error || cameraStateMessage }}
</div>
<div v-else>
<b>Status:</b> {{ cameraStateMessage || 'Unknown reason.' }}
</div>
</div>
<div class="mt-4">
<template v-if="isRegistered">
<div v-if="!blob">
@ -227,6 +280,16 @@ export default class ImageMethodDialog extends Vue {
private platformCapabilities = this.platformService.getCapabilities();
// Add diagnostic properties
showDiagnostics = false;
userAgent = navigator.userAgent;
isSecureContext = window.isSecureContext;
hasMediaDevices = !!navigator.mediaDevices;
hasGetUserMedia = !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia);
cameraState: 'off' | 'initializing' | 'ready' | 'active' | 'error' | 'permission_denied' | 'not_found' | 'in_use' = 'off';
cameraStateMessage?: string;
error: string | null = null;
/**
* Lifecycle hook: Initializes component and retrieves user settings
* @throws {Error} When settings retrieval fails
@ -251,6 +314,14 @@ export default class ImageMethodDialog extends Vue {
-1,
);
}
// Try to start camera preview automatically if not on mobile
if (!this.platformCapabilities.isNativeApp) {
this.startCameraPreview();
} else {
logger.warn("Camera preview not started: running in native app context.");
this.cameraState = 'off';
this.cameraStateMessage = 'Camera preview not started due to native app context.';
}
}
/**
@ -267,7 +338,7 @@ export default class ImageMethodDialog extends Vue {
this.visible = true;
// Start camera preview immediately if not on mobile
if (!this.platformCapabilities.isMobile) {
if (!this.platformCapabilities.isNativeApp) {
this.startCameraPreview();
}
}
@ -339,14 +410,21 @@ export default class ImageMethodDialog extends Vue {
logger.debug("Current showCameraPreview state:", this.showCameraPreview);
logger.debug("Platform capabilities:", this.platformCapabilities);
if (this.platformCapabilities.isMobile) {
if (this.platformCapabilities.isNativeApp) {
logger.debug("Using platform service for mobile device");
this.cameraState = 'initializing';
this.cameraStateMessage = 'Using platform camera service...';
try {
const result = await this.platformService.takePicture();
this.blob = result.blob;
this.fileName = result.fileName;
this.cameraState = 'ready';
this.cameraStateMessage = 'Photo captured successfully';
} catch (error) {
logger.error("Error taking picture:", error);
this.cameraState = 'error';
this.cameraStateMessage = error instanceof Error ? error.message : 'Failed to take picture';
this.error = error instanceof Error ? error.message : 'Failed to take picture';
this.$notify(
{
group: "alert",
@ -362,13 +440,18 @@ export default class ImageMethodDialog extends Vue {
logger.debug("Starting camera preview for desktop browser");
try {
this.cameraState = 'initializing';
this.cameraStateMessage = 'Requesting camera access...';
this.showCameraPreview = true;
await this.$nextTick();
const stream = await navigator.mediaDevices.getUserMedia({
video: { facingMode: "environment" },
});
logger.debug("Camera access granted");
this.cameraStream = stream;
this.cameraState = 'active';
this.cameraStateMessage = 'Camera is active';
await this.$nextTick();
@ -385,6 +468,10 @@ export default class ImageMethodDialog extends Vue {
}
} catch (error) {
logger.error("Error starting camera preview:", error);
const errorMessage = error instanceof Error ? error.message : 'Failed to access camera';
this.cameraState = 'error';
this.cameraStateMessage = errorMessage;
this.error = errorMessage;
this.$notify(
{
group: "alert",
@ -404,6 +491,9 @@ export default class ImageMethodDialog extends Vue {
this.cameraStream = null;
}
this.showCameraPreview = false;
this.cameraState = 'off';
this.cameraStateMessage = 'Camera stopped';
this.error = null;
}
async capturePhoto() {
@ -449,7 +539,7 @@ export default class ImageMethodDialog extends Vue {
async retryImage() {
this.blob = undefined;
if (!this.platformCapabilities.isMobile) {
if (!this.platformCapabilities.isNativeApp) {
await this.startCameraPreview();
}
}
@ -533,6 +623,11 @@ export default class ImageMethodDialog extends Vue {
this.blob = undefined;
}
}
// Add toggle method
toggleDiagnostics() {
this.showDiagnostics = !this.showDiagnostics;
}
}
</script>
@ -562,4 +657,11 @@ export default class ImageMethodDialog extends Vue {
display: flex;
flex-direction: column;
}
/* Add styles for diagnostic panel */
.diagnostic-panel {
font-family: monospace;
white-space: pre-wrap;
word-break: break-all;
}
</style>

95
src/services/QRScanner/WebInlineQRScanner.ts
View File

@ -90,16 +90,57 @@ export class WebInlineQRScanner implements QRScannerService {
logger.error(
`[WebInlineQRScanner:${this.id}] Checking camera permissions...`,
);
// First try the Permissions API if available
if (navigator.permissions && navigator.permissions.query) {
try {
const permissions = await navigator.permissions.query({
name: "camera" as PermissionName,
});
logger.error(
`[WebInlineQRScanner:${this.id}] Permission state:`,
`[WebInlineQRScanner:${this.id}] Permission state from Permissions API:`,
permissions.state,
);
const granted = permissions.state === "granted";
this.updateCameraState(granted ? "ready" : "permission_denied");
return granted;
if (permissions.state === "granted") {
this.updateCameraState("ready", "Camera permissions granted");
return true;
}
} catch (permError) {
// Permissions API might not be supported, continue with getUserMedia check
logger.error(
`[WebInlineQRScanner:${this.id}] Permissions API not supported:`,
permError,
);
}
}
// If Permissions API is not available or didn't return granted,
// try a test getUserMedia call
try {
const testStream = await navigator.mediaDevices.getUserMedia({
video: true,
});
// If we get here, we have permission
testStream.getTracks().forEach(track => track.stop());
this.updateCameraState("ready", "Camera permissions granted");
return true;
} catch (mediaError) {
const error = mediaError as Error;
logger.error(
`[WebInlineQRScanner:${this.id}] getUserMedia test failed:`,
{
name: error.name,
message: error.message,
},
);
if (error.name === "NotAllowedError" || error.name === "PermissionDeniedError") {
this.updateCameraState("permission_denied", "Camera access denied");
return false;
}
// For other errors, we'll try requesting permissions explicitly
return false;
}
} catch (error) {
logger.error(
`[WebInlineQRScanner:${this.id}] Error checking camera permissions:`,
@ -122,6 +163,7 @@ export class WebInlineQRScanner implements QRScannerService {
logger.error(
`[WebInlineQRScanner:${this.id}] Requesting camera permissions...`,
);
// First check if we have any video devices
const devices = await navigator.mediaDevices.enumerateDevices();
const videoDevices = devices.filter(
@ -131,10 +173,12 @@ export class WebInlineQRScanner implements QRScannerService {
logger.error(`[WebInlineQRScanner:${this.id}] Found video devices:`, {
count: videoDevices.length,
devices: videoDevices.map((d) => ({ id: d.deviceId, label: d.label })),
userAgent: navigator.userAgent,
});
if (videoDevices.length === 0) {
logger.error(`[WebInlineQRScanner:${this.id}] No video devices found`);
this.updateCameraState("not_found", "No camera found on this device");
throw new Error("No camera found on this device");
}
@ -148,6 +192,7 @@ export class WebInlineQRScanner implements QRScannerService {
},
);
try {
const stream = await navigator.mediaDevices.getUserMedia({
video: {
facingMode: "environment",
@ -168,28 +213,35 @@ export class WebInlineQRScanner implements QRScannerService {
track.stop();
});
return true;
} catch (error) {
const wrappedError =
error instanceof Error ? error : new Error(String(error));
} catch (mediaError) {
const error = mediaError as Error;
logger.error(
`[WebInlineQRScanner:${this.id}] Error requesting camera access:`,
{
name: error.name,
message: error.message,
userAgent: navigator.userAgent,
},
);
// Update state based on error type
if (
wrappedError.name === "NotFoundError" ||
wrappedError.name === "DevicesNotFoundError"
error.name === "NotFoundError" ||
error.name === "DevicesNotFoundError"
) {
this.updateCameraState("not_found", "No camera found on this device");
throw new Error("No camera found on this device");
} else if (
wrappedError.name === "NotAllowedError" ||
wrappedError.name === "PermissionDeniedError"
error.name === "NotAllowedError" ||
error.name === "PermissionDeniedError"
) {
this.updateCameraState("permission_denied", "Camera access denied");
throw new Error(
"Camera access denied. Please grant camera permission and try again",
);
} else if (
wrappedError.name === "NotReadableError" ||
wrappedError.name === "TrackStartError"
error.name === "NotReadableError" ||
error.name === "TrackStartError"
) {
this.updateCameraState(
"in_use",
@ -197,9 +249,22 @@ export class WebInlineQRScanner implements QRScannerService {
);
throw new Error("Camera is in use by another application");
} else {
this.updateCameraState("error", wrappedError.message);
throw new Error(`Camera error: ${wrappedError.message}`);
this.updateCameraState("error", error.message);
throw new Error(`Camera error: ${error.message}`);
}
}
} catch (error) {
const wrappedError =
error instanceof Error ? error : new Error(String(error));
logger.error(
`[WebInlineQRScanner:${this.id}] Error in requestPermissions:`,
{
error: wrappedError.message,
stack: wrappedError.stack,
userAgent: navigator.userAgent,
},
);
throw wrappedError;
}
}

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