DVWebloader V2: Modern File Uploader Using Dataverse Frontend Components

[ErykKul]

What this PR does / why we need it:

This PR adds DVWebloader V2 - a modern file uploader that reuses the file upload components from the dataverse-frontend SPA instead of maintaining a separate codebase.

Why V2?

• Code reuse: V1 duplicates upload logic that already exists in dataverse-frontend
• Feature parity: Automatically benefits from improvements to the SPA's file uploader
• Maintainability: Single source of truth for upload functionality
• Modern stack: React, TypeScript, and the dataverse-client-javascript library

What's included:

• src/dvwebloaderV2.html - HTML entry point with configuration
• src/lib/dvwebloader-v2.js - Pre-built standalone bundle (~1.5MB)
• src/lib/locales/ - Translation files (shared.json only)

Dependencies (Related PRs):

This V2 bundle is built from the following upstream changes (pre-built bundle included, so no merge required):

1. dataverse-frontend - #898: Feature/standalone file uploader

   • Adds the standalone uploader build system (npm run build-uploader)
   • Exports FileUploaderPanelCore as a reusable component
   • Adds StandaloneFileUploaderPanel thin wrapper for standalone mode

2. dataverse-client-javascript - #403: feat: add configurable file upload options

   • Exports FilesConfig class for runtime configuration
   • Allows disabling S3 tagging for storage backends that don't support it
   • Configurable retry count and upload timeout

Note: The pre-built bundle in src/lib/ includes all dependencies, so this PR works independently without waiting for the upstream PRs to be merged.

How to use:

<!-- Configuration (set before bundle loads) -->
<script>
    window.dvWebloaderConfig = {
        useS3Tagging: true,      // Set false for S3 backends without tagging support
        maxRetries: 3,
        uploadTimeoutMs: 0,      // 0 = no timeout
        disableMD5Checksum: false
    };
</script>
<script type="module" src="lib/dvwebloader-v2.js"></script>

Open with URL parameters:

dvwebloaderV2.html?siteUrl=https://your-dataverse.edu&datasetPid=doi:10.5072/FK2/XXXXX&key=YOUR_API_KEY

V1 vs V2:

Feature	V1	V2
Codebase	Standalone JavaScript	Reuses dataverse-frontend components
Upload logic	Custom implementation	Uses dataverse-client-javascript
UI	Custom HTML/CSS	Dataverse Design System
Maintenance	Separate updates needed	Inherits SPA improvements
Bundle size	~50KB	~1.5MB (includes React + UI library)

Notes:

• V1 files remain in src/ for backward compatibility
• V2 files are in src/lib/ (bundle) and src/dvwebloaderV2.html
• To rebuild V2 bundle: use npm run build-uploader in dataverse-frontend