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Build an interactive file manager featuring drag-and-drop dropzones, file type validation grids, size verification limits, and upload progress bars.
Build an interactive file manager featuring drag-and-drop dropzones, file type validation grids, size verification limits, and upload progress bars.
Full-stack developers aiming to master file validation, stream uploads, storage integrations, and progress telemetries.
Business Objective
Applications require file upload managers. The system must accept drag-and-drop actions, reject files exceeding 5MB or invalid MIME formats, and display real-time upload progress bars.
Core Features List
file-uploader/
├── app/
│ ├── api/
│ │ └── upload/route.ts # Multipart handler
│ ├── page.tsx # Uploader layout
│ └── layout.tsx
├── components/
│ ├── Dropzone.tsx # Drag event container
│ └── FileList.tsx # Upload status list
└── lib/
└── s3.ts # Storage configuration`Dropzone Panel` Component
Handles dragging events, validations, and input references.
`File Status Card` Component
Displays progress sliders and cancel actions.
`Dashboard Gallery` Component
Grids listing uploaded documents and delete triggers.
POST /api/upload
Request:
Multipart Form-Data: { "file": <BINARY_DATA> }
Response (201 Created):
{
"success": true,
"fileUrl": "https://s3.amazonaws.com/uploads/doc.pdf"
}Code the dropzone container, binding dragging state variables.
Write helper functions validating file properties.
Implement axios upload progress tracking to update progress bars.
Configure S3 clients and write API route multipart parsers.
💡 Use pre-signed URLs to upload files directly from the client, bypassing intermediate server processes.
💡 Verify files exist before executing delete operations.
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