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import { observable } from 'mobx';
import { observer } from 'mobx-react';
import * as React from 'react';
import ReactLoading from 'react-loading';
import { Doc } from '../../../fields/Doc';
import { StrCast } from '../../../fields/Types';
import { ViewBoxAnnotatableComponent } from '../DocComponent';
import { FieldView, FieldViewProps } from './FieldView';
import './LoadingBox.scss';
/**
* LoadingBox Class represents a placeholder doc for documents that are currently
* being uploaded to the server and being fetched by the client. The LoadingBox doc is then used to
* generate the actual type of doc that is required once the document has been successfully uploaded.
*
* Design considerations:
* We are using the docToFiles map in Documents to keep track of all files being uploaded in one session of the client.
* If the file is not found we assume an error has occurred with the file upload, e.g. it has been interrupted by a client refresh
* or network issues. The docToFiles essentially gets reset everytime the page is refreshed.
*
* TODOs:
* 1) ability to query server to retrieve files that already exist if users upload duplicate files.
* 2) ability to restart upload if there is an error
* 3) detect network error and notify the user
* 4 )if file upload gets interrupted, it still gets uploaded to the server if there are no network interruptions which leads to unused space. this could be
* handled with (1)
* 5) Fixing the stacking view bug
* 6) Fixing the CSS
*
* @author naafiyan
*/
@observer
export class LoadingBox extends ViewBoxAnnotatableComponent<FieldViewProps>() {
public static LayoutString(fieldKey: string) {
return FieldView.LayoutString(LoadingBox, fieldKey);
}
componentDidMount() {
if (!Doc.CurrentlyLoading || !Doc.CurrentlyLoading.includes(this.rootDoc)) {
this.rootDoc.isLoading = false;
this.rootDoc.errorMessage = 'Upload was interrupted, please try again';
}
}
render() {
return (
<div className="loadingBoxContainer" style={{ background: this.rootDoc.isLoading ? '' : 'red' }}>
<div className="textContainer">
<p className="headerText">{this.rootDoc.isLoading ? 'Loading (can take several minutes):' : StrCast(this.rootDoc.errorMessage, 'Error Loading File:')}</p>
<span className="text">{StrCast(this.rootDoc.title)}</span>
{!this.rootDoc.isLoading ? null : <ReactLoading type={'spinningBubbles'} color={'blue'} height={100} width={100} />}
</div>
</div>
);
}
}
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