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import * as _ from 'lodash';
import CircularProgress from 'material-ui/CircularProgress';
import { GridList } from 'material-ui/GridList';
import * as React from 'react';
import { RelayerGridTile } from 'ts/components/relayer_index/relayer_grid_tile';
import { Retry } from 'ts/components/ui/retry';
import { ScreenWidths, WebsiteBackendRelayerInfo } from 'ts/types';
import { backendClient } from 'ts/utils/backend_client';
export interface RelayerIndexProps {
networkId: number;
screenWidth: ScreenWidths;
}
interface RelayerIndexState {
relayerInfos?: WebsiteBackendRelayerInfo[];
error?: Error;
}
const CELL_HEIGHT = 290;
const NUMBER_OF_COLUMNS_LARGE = 3;
const NUMBER_OF_COLUMNS_MEDIUM = 2;
const NUMBER_OF_COLUMNS_SMALL = 2;
const GRID_PADDING = 20;
export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerIndexState> {
private _isUnmounted: boolean;
constructor(props: RelayerIndexProps) {
super(props);
this._isUnmounted = false;
this.state = {
relayerInfos: undefined,
error: undefined,
};
}
public componentWillMount(): void {
// tslint:disable-next-line:no-floating-promises
this._fetchRelayerInfosAsync();
}
public componentWillUnmount(): void {
this._isUnmounted = true;
}
public render(): React.ReactNode {
const isReadyToRender = _.isUndefined(this.state.error) && !_.isUndefined(this.state.relayerInfos);
if (!isReadyToRender) {
return (
// TODO: consolidate this loading component with the one in portal and OpenPositions
// TODO: possibly refactor into a generic loading container with spinner and retry UI
<div className="center">
{_.isUndefined(this.state.error) ? (
<CircularProgress size={40} thickness={5} />
) : (
<Retry onRetry={this._fetchRelayerInfosAsync.bind(this)} />
)}
</div>
);
} else {
const numberOfRelayers = this.state.relayerInfos.length;
const numberOfColumns = Math.min(
numberOfRelayers,
this._numberOfColumnsForScreenWidth(this.props.screenWidth),
);
return (
<GridList
cellHeight={CELL_HEIGHT}
cols={numberOfColumns}
padding={GRID_PADDING}
style={{ marginTop: -10, marginBottom: 0 }}
>
{this.state.relayerInfos.map((relayerInfo: WebsiteBackendRelayerInfo, index) => (
<RelayerGridTile key={index} relayerInfo={relayerInfo} networkId={this.props.networkId} />
))}
</GridList>
);
}
}
private async _fetchRelayerInfosAsync(): Promise<void> {
try {
if (!this._isUnmounted) {
this.setState({
relayerInfos: undefined,
error: undefined,
});
}
const relayerInfos = await backendClient.getRelayerInfosAsync();
if (!this._isUnmounted) {
this.setState({
relayerInfos,
});
}
} catch (error) {
if (!this._isUnmounted) {
this.setState({
error,
});
}
}
}
private _numberOfColumnsForScreenWidth(screenWidth: ScreenWidths): number {
switch (screenWidth) {
case ScreenWidths.Md:
return NUMBER_OF_COLUMNS_MEDIUM;
case ScreenWidths.Sm:
return NUMBER_OF_COLUMNS_SMALL;
case ScreenWidths.Lg:
default:
return NUMBER_OF_COLUMNS_LARGE;
}
}
}
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