Add Archive Extraction (ZIP / RAR / 7Z) feature for iOS & Android application on React

Project Description

Mobile application for working with archives
Platforms: iOS / Android
Stack: React

The application allows archiving files, but does not support extraction.

Link to the application in the App Store:
https://apps.apple.com/us/app/zip-file-opener-rar-extractor/id6743240549

Task

Add the extraction (extract) function for archives:

• ZIP

• RAR

• 7Z
  or the maximum possible number of formats, depending on implementation)

Current Application Behavior

1. The user clicks Upload files

2. Uploads a file

3. The Convert button is activated

4. If the user uploads an archive (zip / rar / 7z) — an error occurs, the application only allows archiving files, but not the other way around.

Expected Behavior

1. Uploading Archives

• The user can upload archive files.

• Error when uploading archives should be resolved.

2. File Type Detection

• The application automatically detects the file type:

  • regular file → archiving

  • archive → extraction

3. UI Changes

• If a regular file is uploaded:

  • the button is named Convert

• If an archive is uploaded:

  • the button should change to Extract

4. Extraction Result

• Files after extraction should be:

  • available to the user

  • saved in the application's file system

  • or opened/shared in a standard way

Requirements

• Code from AI is not accepted

• Clean code

• Adherence to best practices for React Native

• No duplication of logic

• Logical and meaningful names for variables, functions, and components

• Logic for file type detection (archive / non-archive) — separated into a separate module/service

• Minimal impact on existing archiving functionality

• Use only supported and stable libraries

• Adding “heavy” or outdated dependencies without agreement is prohibited

• For each new library: a brief explanation of why it was chosen and a link to documentation / GitHub

AI Policy and Vibe Coding

Prohibited:

• Fully or predominantly AI-generated code
• Code without the executor understanding how it works
• “Blind copying” of solutions from ChatGPT / Copilot / Claude

Allowed:

• AI as an auxiliary tool (searching for ideas, examples) provided there is a full understanding of the code and the ability to explain each key decision

The client reserves the right:

• to review the pull request
• to ask questions about the implementation

The executor must be able to explain how:

• the file type detection logic works
• the extraction process on iOS and Android
• library integration works

Inability to explain the code = work not accepted

Additional

• Project on GitHub (private)

• Access will be provided after the executor is selected

• Code from AI is not accepted,

• The solution must work correctly on iOS and Android