File Handling

Files are an essential component of modern software applications. Amity provides a powerful file management system that enables you to easily handle different types of files, such as document files, videos, and audio files. In this section, we will introduce you to the concept of a file in Amity and provide an overview of file handling in Amity.

File Data

Property	Description
fileId	Root file key on cloud storage
fileUrl	HTTP link for file download
type	File type
createdAt	Date/time when a file is uploaded
updatedAt	Date/time when a file is updated
attributes	Information about the file

Upload Files

To upload a file to the system, you can use the Amity File Upload API provided by the SDK. The API allows you to upload a file to the Amity server by providing the file's data and the file metadata, such as the file name, file type, and file size. The SDK simplifies the process of uploading files by providing pre-built components that you can easily integrate into your application.

iOS

Android

On Android, you can separately observe uploading states outside of the uploading method by using:

JavaScript

import { FileRepository, LoadingStatus } from '@amityco/js-sdk';

const liveObject = FileRepository.createFile({ 
  file, // https://developer.mozilla.org/en-US/docs/Web/API/File
  onProgress: ({ currentFile, currentPercent }) => {
  },
});

liveObject.on('loadingStatusChanged', ({ newValue }) => {
  if (newValue === LoadingStatus.Loaded) {
    console.log('The file is uploaded', liveObject.model);
  }
});

liveObject.on('dataError', (error) => {
  console.error('can not upload the file', error);
});

// upload video
const liveObject = FileRepository.createVideo({ 
  file,
  onProgress: ({ currentFile, currentPercent }) => {
  },
});
Refer to the 
file model
 for the description of the response after a successful file creation. If an error is encountered while creating the file, it will return the following errors:
//Attached file payload is too large
{
  "status": "error",
  "code": 500000,
  "message": "Payload too large."
}

// Unexpected error
{
  "status": "error",
  "code": 500000,
  "message": "Unexpected error"
}

TypeScript

Version 6 and Beta(v0.0.1)

Flutter

Retrieve Files

You can retrieve a file from Amity using the Amity File Retrieval API provided by the SDK. The API enables you to retrieve a file from the Amity server by supplying the file ID. The SDK streamlines the process of retrieving files by offering pre-made components that can be smoothly integrated into your app.

iOS

Android

JavaScript

import { FileRepository } from '@amityco/js-sdk';

let file;
const liveObject = FileRepository.getFile(fileId);

liveObject.on('dataUpdated', (updatedModel) => {
  file = updatedModel;
});

liveObject.on('dataError', (error) => {
  console.error('Can not get the file', error);
});

file = liveObject.model;

TypeScript

Delete Files

In addition to uploading and retrieving files, Amity provides a deleting function to delete a file that is no longer needed.

iOS

Android

JavaScript

import { FileRepository } from '@amityco/js-sdk';

const success = await FileRepository.deleteFile(fileId);

The response will return true if the file deletion is successful.

TypeScript

Version 6 and Beta(v0.0.1)

The response will return true if the file deletion is successful.

"data": {
    "success": true
  }

Otherwise, if an error is encountered during the deletion, it will return the following errors:

//Permission denied error
{
  "status": "error",
  "code": 400301,
  "message": "Permission denied"
}

Resource Not Found error
{
  "status": "error",
  "code": 400400,
  "message": "Resource Not Found."
}

//Passed the wrong parameters error
{
  "status": "error",
  "code": 500000,
  "message": "Parameters error."
}