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@iceljc
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@iceljc iceljc commented Jan 17, 2026

PR Type

Enhancement, Bug fix


Description

  • Enhance error page with improved UI and error-specific handling

  • Add conversation access control validation on chat load

  • Fix iframe detection using window.self comparison

  • Add accessible property to ConversationModel type definition


Diagram Walkthrough

flowchart LR
  A["Chat Box Component"] -->|Check Access| B["Conversation Model"]
  B -->|accessible=false| C["Redirect to Error Page"]
  D["Error Page"] -->|Enhanced UI| E["Status-specific Display"]
  F["Iframe Detection"] -->|window.self != window.top| G["Frame Status"]
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File Walkthrough

Relevant files
Enhancement
+error.svelte
Enhanced error page UI and status handling                             

src/routes/+error.svelte

  • Redesigned error page with improved visual layout using Sveltestrap
    components
  • Added status-specific error handling (404 vs other errors)
  • Implemented animated error display with icon and descriptive messages
  • Added navigation button to dashboard for non-404 errors
+50/-4   
conversationTypes.js
Add accessible property to conversation type                         

src/lib/helpers/types/conversationTypes.js

  • Added accessible boolean property to ConversationModel type definition
  • Property indicates whether conversation is accessible to current user
+1/-0     
Bug fix
chat-box.svelte
Add access control and fix iframe detection                           

src/routes/chat/[agentId]/[conversationId]/chat-box.svelte

  • Added conversation access validation on component mount
  • Redirects to error page if conversation is inaccessible
  • Fixed iframe detection logic using window.self comparison
  • Commented out role-based action disable logic for refactoring
+10/-4   

@qodo-code-review
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PR Compliance Guide 🔍

Below is a summary of compliance checks for this PR:

Security Compliance
Sensitive information exposure

Description: The error page renders $page.error?.message to end users (via title), which can expose
sensitive internal details (e.g., stack-trace-like messages, database/endpoint
identifiers, or configuration hints) if upstream errors are not fully sanitized.
+error.svelte [8-36]

Referred Code
    $: status = $page.status;
    $: message = $page.error?.message || 'An error occurred';

    $: icon = status === 404 ? 'bx-search-alt' : 'bx-error-circle';
    $: title = status === 404 ? 'Page Not Found' : message;
</script>

{#if status === 500}
    <Error500 />
{:else}
    <HeadTitle title="{status} Error" />

    <div class="account-pages my-5 pt-5">
        <Container>
            <Row>
                <Col lg="12">
                    <div class="text-center mb-5">
                        <h1 class="display-2 fw-medium">
                            {String(status).charAt(0)}
                            <i class="bx {icon} bx-tada text-primary display-3" />
                            {String(status).slice(1)}


 ... (clipped 8 lines)
Ticket Compliance
🎫 No ticket provided
  • Create ticket/issue
Codebase Duplication Compliance
Codebase context is not defined

Follow the guide to enable codebase context checks.

Custom Compliance
🟢
Generic: Meaningful Naming and Self-Documenting Code

Objective: Ensure all identifiers clearly express their purpose and intent, making code
self-documenting

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Secure Logging Practices

Objective: To ensure logs are useful for debugging and auditing without exposing sensitive
information like PII, PHI, or cardholder data.

Status: Passed

Learn more about managing compliance generic rules or creating your own custom rules

🔴
Generic: Robust Error Handling and Edge Case Management

Objective: Ensure comprehensive error handling that provides meaningful context and graceful
degradation

Status:
Iframe check can throw: The new iframe detection window.self != window.top can throw a cross-origin SecurityError
and is not protected by try/catch or a safe fallback.

Referred Code
function initChatView() {
	isFrame = window.self != window.top;
	mode = $page.url.searchParams.get('mode') || '';
	// initial condition

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Secure Error Handling

Objective: To prevent the leakage of sensitive system information through error messages while
providing sufficient detail for internal debugging.

Status:
Leaks internal error message: The UI uses $page.error?.message for the displayed title, which may reveal internal
implementation details to end users instead of a generic user-facing error.

Referred Code
    $: status = $page.status;
    $: message = $page.error?.message || 'An error occurred';

    $: icon = status === 404 ? 'bx-search-alt' : 'bx-error-circle';
    $: title = status === 404 ? 'Page Not Found' : message;
</script>

{#if status === 500}
    <Error500 />
{:else}
    <HeadTitle title="{status} Error" />

    <div class="account-pages my-5 pt-5">
        <Container>
            <Row>
                <Col lg="12">
                    <div class="text-center mb-5">
                        <h1 class="display-2 fw-medium">
                            {String(status).charAt(0)}
                            <i class="bx {icon} bx-tada text-primary display-3" />
                            {String(status).slice(1)}


 ... (clipped 8 lines)

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Comprehensive Audit Trails

Objective: To create a detailed and reliable record of critical system actions for security analysis
and compliance.

Status:
No access audit: The new access-control redirect on inaccessible conversations does not emit any audit log
entry (user, conversation id, outcome) to reconstruct authorization events.

Referred Code
onMount(async () => {
	disableSpeech = navigator.userAgent.includes('Firefox');
	conversation = await getConversation(params.conversationId, true);
	if (conversation == null || conversation.accessible === false) {
		goto('/error', { replaceState: true });
		return;
	}

Learn more about managing compliance generic rules or creating your own custom rules

Generic: Security-First Input Validation and Data Handling

Objective: Ensure all data inputs are validated, sanitized, and handled securely to prevent
vulnerabilities

Status:
Client-side auth gating: The new access check relies on conversation.accessible returned to the client, which needs
verification that server-side authorization prevents unauthorized conversation data from
being returned in the first place.

Referred Code
conversation = await getConversation(params.conversationId, true);
if (conversation == null || conversation.accessible === false) {
	goto('/error', { replaceState: true });
	return;
}

Learn more about managing compliance generic rules or creating your own custom rules

Compliance status legend 🟢 - Fully Compliant
🟡 - Partial Compliant
🔴 - Not Compliant
⚪ - Requires Further Human Verification
🏷️ - Compliance label

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PR Code Suggestions ✨

Explore these optional code suggestions:

CategorySuggestion                                                                                                                                    Impact
High-level
Use SvelteKit's load for authorization

Move the authorization check from the component's onMount function to a
SvelteKit load function. This prevents rendering unauthorized content and uses
the framework's built-in error handling.

Examples:

src/routes/chat/[agentId]/[conversationId]/chat-box.svelte [241-244]
		if (conversation == null || conversation.accessible === false) {
			goto('/error', { replaceState: true });
			return;
		}

Solution Walkthrough:

Before:

// in src/routes/chat/[agentId]/[conversationId]/chat-box.svelte
<script>
  import { onMount } from 'svelte';
  import { goto } from '$app/navigation';
  import { getConversation } from '...';

  onMount(async () => {
    const conversation = await getConversation(params.conversationId, true);
    if (conversation == null || conversation.accessible === false) {
      goto('/error', { replaceState: true });
      return;
    }
    // ... rest of component initialization
  });
</script>

After:

// in src/routes/chat/[agentId]/[conversationId]/+page.js (new file)
import { error } from '@sveltejs/kit';
import { getConversation } from '...';

export async function load({ params }) {
  const conversation = await getConversation(params.conversationId, true);
  if (conversation == null || conversation.accessible === false) {
    throw error(403, 'You do not have access to this conversation.');
  }
  return { conversation };
}

// in src/routes/chat/[agentId]/[conversationId]/chat-box.svelte
<script>
  export let data; // Passed from load function
  const { conversation } = data;
  // ... component logic now uses `conversation` prop
</script>
Suggestion importance[1-10]: 9

__

Why: The suggestion correctly identifies a client-side authorization check in onMount which can cause a flash of content, and proposes the idiomatic SvelteKit solution of using a load function for better security and user experience.

High
Possible issue
Use SvelteKit's error helper for navigation

Replace goto('/error') with SvelteKit's error helper to correctly trigger the
error page with a specific status code and message when a conversation is
inaccessible.

src/routes/chat/[agentId]/[conversationId]/chat-box.svelte [241-244]

-import { goto } from '$app/navigation';
+import { error } from '@sveltejs/kit';
 ...
 onMount(async () => {
     ...
     conversation = await getConversation(params.conversationId, true);
     if (conversation == null || conversation.accessible === false) {
-        goto('/error', { replaceState: true });
-        return;
+        throw error(403, 'You do not have permission to access this conversation.');
     }
     ...
 });

[To ensure code accuracy, apply this suggestion manually]

Suggestion importance[1-10]: 9

__

Why: The suggestion correctly identifies that goto('/error') will not populate the error state for the +error.svelte component, and proposes using the idiomatic SvelteKit error helper, which is the correct way to trigger a custom error page.

High
Use a root-relative path for links

Fix the "Back to Dashboard" link by changing its relative path
href="page/dashboard" to a root-relative path to prevent incorrect navigation
from nested URLs.

src/routes/+error.svelte [40-42]

-<Link class="btn btn-primary" href="page/dashboard">
+<Link class="btn btn-primary" href="/dashboard">
     Back to Dashboard
 </Link>
  • Apply / Chat
Suggestion importance[1-10]: 8

__

Why: This suggestion correctly identifies a bug where a relative link on the error page will break when the error occurs on a nested route, and provides the correct fix by making the path absolute.

Medium
General
Safely access browser-specific global variables

In initChatView, wrap the window access in a if (browser) check to prevent
potential Server-Side Rendering (SSR) errors if the code is refactored in the
future.

src/routes/chat/[agentId]/[conversationId]/chat-box.svelte [383-388]

+import { browser } from '$app/environment';
+
+...
+
 function initChatView() {
-    isFrame = window.self != window.top;
+    if (browser) {
+        isFrame = window.self != window.top;
+    }
     mode = $page.url.searchParams.get('mode') || '';
     // initial condition
     isPersistLogClosed = false;
     isInstantLogClosed = false;

[To ensure code accuracy, apply this suggestion manually]

Suggestion importance[1-10]: 2

__

Why: The suggestion is technically correct about safely accessing window, but since the code is inside onMount, which only runs on the client, the browser check is currently redundant and offers only a marginal improvement for future-proofing.

Low
  • More

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