fix(catalog): send browser headers for image requests on all platforms

[Copilot]

Catalog search results showed placeholder images on iOS because CatalogItemImage was only sending User-Agent and Accept headers on Android. Several image CDNs (Mackage, Black Diamond, etc.) gate image serving on a recognized browser UA — requests without these headers silently fall back to placeholders.

Changes

• CatalogItemImage.tsx — removed Platform.OS === 'android' guard; headers are now sent unconditionally on all platforms
• Dropped the now-unused Platform import

- ...(Platform.OS === 'android'
-   ? { headers: { 'User-Agent': '...Chrome...', Accept: 'image/webp,...' } }
-   : {}),
+ headers: {
+   'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 ...',
+   Accept: 'image/webp,image/apng,image/*,*/*;q=0.8',
+ },

This explains the per-brand inconsistency: CDNs with stricter UA checks (Mackage, Black Diamond) failed on iOS while more permissive ones (Patagonia) worked fine.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>iOS – Catalog Search Results Do Not Display Item Images</issue_title>
<issue_description>Description:
On iOS devices, when searching for items in the Catalog screen, the search results display only a placeholder image (e.g., photo icon on grey background) instead of the actual item images.

On Android, the search results display the item images correctly.

Steps to Reproduce:

1. Open the app on iOS
2. Navigate to the Catalog screen
3. Tap the Search bar
4. Enter a search term for an item
5. Observe the search results

Screenshots / Screen Recordings:

ScreenRecording_02-25-2026.16-33-21_1.MP4

Expected Result:
Search results should display the actual item images.

Actual Result:

• Item images are replaced with a placeholder (photo icon on grey background)
• No images are visible

Environment:

• Device: iPhone (13 Pro)

Additional Notes:

• This is iOS-specific; Android displays images correctly
  </issue_description>

Comments on the Issue (you are @copilot in this section)

@JewelTee @mikib0

v2.0.15-alpha.2

Item images load properly in some catalog search categories, but in other categories the images do not display and show placeholders instead. The issue seems to be limited to specific categories.

@mikib0 @JewelTee "Jacket", "Shorts" showing images on Android? @JewelTee > [@JewelTee](https://github.com/JewelTee) "Jacket", "Shorts" showing images on Android? @mikib0 It was showing last time, but I checked again just now after clearing data, and images are not showing even on other categories.

</comment_new>
<comment_new>@andrew-bierman
@copilot Assigned for POC development. Please investigate and create a proof of concept implementation.</comment_new>

• Fixes iOS – Catalog Search Results Do Not Display Item Images #1848

---

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Summary by CodeRabbit

• Bug Fixes
  • Fixed inconsistent image loading in catalog by ensuring required headers are consistently included across all platforms.

[andrew-bierman]

@coderabbitai Please review this PR for code quality, best practices, and potential issues.

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🧩 Analysis chain

The PR description images show iOS catalog search results demonstrating the bug and fix:

• Before fix (iOS): "Shorts" (Black Diamond) and "Jacket" (Mackage) show grey placeholder images with a photo icon; "Gloves" (Patagonia) and "T shirt" (Patagonia) show actual images.
• After fix (iOS): "Gloves" (Patagonia) now shows the actual product image — and the fix aims to resolve Mackage/Black Diamond CDN failures too.
• Android screenshots: Also show placeholders for Jacket (Mackage) and Shorts (Black Diamond), confirming the CDN UA-gating issue affects Android too when the PR was developed (interesting — let me look at the actual code).

Let me fetch the file to do a thorough review.

---

🏁 Script executed:

#!/bin/bash
# Find CatalogItemImage component
fd -t f "CatalogItemImage" --exec cat {}

Length of output: 1619

---

🏁 Script executed:

#!/bin/bash
# Check getImageExtension implementation
fd -t f "imageUtils" --exec cat {}

# Check ImageCacheManager
fd -t f "ImageCacheManager" --exec cat {}

Length of output: 8508

---

@andrew-bierman: The PR description images confirm the bug clearly — iOS search for "Jacket" (Mackage) and "Shorts" (Black Diamond) showed placeholder images while Patagonia items worked, because Patagonia's CDN is more permissive. The fix — removing the Platform.OS === 'android' guard — is correct and minimal. Here's the full review:

---

✅ Core Fix — Correct

Removing the Platform.OS === 'android' guard so headers are sent unconditionally is the right approach. The Platform import cleanup is also good hygiene.

---

⚠️ Issues Found

1. fetchImageExtension still makes headerless requests — may fail for the same UA-gated CDNs

In imageUtils.ts, both the HEAD request and the fallback range-GET in fetchImageExtension are sent without the User-Agent header:

// HEAD request — no UA header
const response = await fetch(url, {
  method: 'HEAD',
  signal: controller.signal,
});

// Range GET — no UA header
const rangeResponse = await fetch(url, {
  headers: { Range: 'bytes=0-1023' },
  signal: rangeController.signal,
});

For CDNs that block requests without a recognized UA (Mackage, Black Diamond), these requests will fail or return an error, and fetchImageExtension will fall back to defaultExt = 'jpg'. This means cacheCatalogItemImage may cache files with the wrong extension. The fix from this PR should be applied here too:

const BROWSER_HEADERS = {
  'User-Agent':
    'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36',
  Accept: 'image/webp,image/apng,image/*,*/*;q=0.8',
};

// HEAD request
const response = await fetch(url, {
  method: 'HEAD',
  headers: BROWSER_HEADERS,
  signal: controller.signal,
});

// Range GET
const rangeResponse = await fetch(url, {
  headers: { ...BROWSER_HEADERS, Range: 'bytes=0-1023' },
  signal: rangeController.signal,
});

---

2. Duplicate hardcoded UA string — extract to a shared constant

The identical User-Agent + Accept string currently appears in two places:

• CatalogItemImage.tsx
• ImageCacheManager.cacheRemoteImage

(And should be added to fetchImageExtension per issue #1 above.)

Centralising it prevents drift if the UA string ever needs updating:

// e.g. packages/expo-app/lib/constants/httpHeaders.ts
export const BROWSER_IMAGE_HEADERS = {
  'User-Agent':
    'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36',
  Accept: 'image/webp,image/apng,image/*,*/*;q=0.8',
} as const;

---

3. Missing onError fallback — failed image loads render silently

CatalogItemImage only renders the placeholder icon when imageUrl is null/undefined. If the CDN rejects the request at runtime (network error, CDN change, etc.), the <Image> component renders nothing — an empty grey area — without the user-facing placeholder icon. Adding onError would make error states consistent:

import { useState } from 'react';

export function CatalogItemImage({ imageUrl, ...imageProps }: PackItemImageProps) {
  const { colors } = useColorScheme();
  const [hasError, setHasError] = useState(false);

  if (!imageUrl || hasError)
    return (
      <View
        className={`items-center justify-center bg-neutral-300 dark:bg-neutral-600 ${imageProps.className}`}
      >
        <Icon name="image" size={24} color={colors.grey} />
      </View>
    );

  return (
    <Image
      source={{
        uri: imageUrl,
        headers: BROWSER_IMAGE_HEADERS,
      }}
      onError={() => setHasError(true)}
      {...imageProps}
      className={`bg-muted ${imageProps.className}`}
    />
  );
}

---

Summary

	Severity	Notes
fetchImageExtension missing UA headers	Medium	May cause wrong file extension in cache for UA-gated CDNs
Duplicate UA string	Low	Maintenance risk
No onError fallback	Low	Silent failure UX

The core fix is solid. Issues #2 and #3 would be good to address in this PR; issue #1 could be a follow-up since it affects a separate code path (cacheCatalogItemImage), not the display path fixed here.

[andrew-bierman]

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📝 Walkthrough

Walkthrough

The change removes platform-specific conditional logic from the CatalogItemImage component's Image source configuration. User-Agent and Accept headers are now always included, replacing the previous Android-only branch to enable image loading on iOS.

Changes

Cohort / File(s)	Summary
Image Loading Headers apps/expo/features/catalog/components/CatalogItemImage.tsx	Removed Platform from imports and eliminated platform-specific conditional headers. Image source now unconditionally includes User-Agent and Accept headers in all cases.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 The images on iOS were hiding away,
Behind conditionals that blocked the day,
Now headers flow freely, no platform in sight,
Every device loads images bright! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and directly summarizes the main change: removing platform-specific conditions to send browser headers for image requests on all platforms instead of only Android.
Linked Issues check	✅ Passed	The PR directly addresses the iOS image loading issue [#1848] by removing the Android-only platform guard, enabling header transmission on all platforms to satisfy CDN requirements.
Out of Scope Changes check	✅ Passed	All changes are scoped to CatalogItemImage.tsx and directly address the linked issue; no unrelated modifications are present.

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[Copilot]

Pull request overview

Fixes inconsistent catalog image loading on iOS by ensuring remote image requests always include browser-like headers that certain CDNs require to return the real asset instead of a placeholder.

Changes:

• Removed the Android-only guard so CatalogItemImage sends User-Agent and Accept headers on all platforms.
• Dropped the now-unused Platform import.

---

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[Copilot]

The User-Agent/Accept header block is duplicated elsewhere (e.g. apps/expo/lib/utils/ImageCacheManager.ts). Consider centralizing these “browser-like” image request headers into a shared constant/helper so they don’t drift over time and can be updated in one place if CDN requirements change.

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[Isthisanmol]

Don't think that it is a platform specific issue. As it does not fixes the issue #1848
for some of the categories on both the platform.