import { Button, ButtonGroup, Icon, Field, FieldGroup, TextInput, Throbber } from '@rocket.chat/fuselage';
import React, { useCallback, useEffect, useState } from 'react';

import Page from '../../components/basic/Page';
import { useRoute, useQueryStringParameter } from '../../contexts/RouterContext';
import { useEndpoint, useUpload } from '../../contexts/ServerContext';
import { useTranslation } from '../../contexts/TranslationContext';
import { useFileInput } from '../../hooks/useFileInput';
import { useForm } from '../../hooks/useForm';
import { handleInstallError } from './helpers';

const placeholderUrl = 'https://rocket.chat/apps/package.zip';

function AppInstallPage() {
	const t = useTranslation();

	const appsRoute = useRoute('admin-apps');

	const appId = useQueryStringParameter('id');
	const queryUrl = useQueryStringParameter('url');

	const [installing, setInstalling] = useState(false);

	const endpointAddress = appId ? `/apps/${ appId }` : '/apps';
	const installApp = useEndpoint('POST', endpointAddress);
	const uploadApp = useUpload(endpointAddress);

	const { values, handlers } = useForm({
		file: {},
		url: queryUrl,
	});

	const {
		file,
		url,
	} = values;

	const canSave = !!url || !!file.name;

	const {
		handleFile,
		handleUrl,
	} = handlers;

	useEffect(() => {
		queryUrl && handleUrl(queryUrl);
	}, [queryUrl, handleUrl]);

	const handleUploadButtonClick = useFileInput(handleFile, 'app');

	const install = useCallback(async () => {
		setInstalling(true);

		try {
			if (url) {
				const { app } = await installApp({ url });
				appsRoute.push({ context: 'details', id: app.id });
				return;
			}

			const fileData = new FormData();
			fileData.append('app', file, file.name);
			const { app } = await uploadApp(fileData);
			appsRoute.push({ context: 'details', id: app.id });
		} catch (error) {
			handleInstallError(error);
		} finally {
			setInstalling(false);
		}
	}, [url, appsRoute, installApp, file, uploadApp]);

	const handleCancel = () => {
		appsRoute.push();
	};

	return <Page flexDirection='column'>
		<Page.Header title={t('App_Installation')} />
		<Page.ScrollableContent>
			<FieldGroup display='flex' flexDirection='column' alignSelf='center' maxWidth='x600' w='full'>
				<Field>
					<Field.Label>{t('App_Url_to_Install_From')}</Field.Label>
					<Field.Row>
						<TextInput placeholder={placeholderUrl} value={url} onChange={handleUrl} addon={<Icon name='permalink' size='x20'/>}/>
					</Field.Row>
				</Field>
				<Field>
					<Field.Label>{t('App_Url_to_Install_From_File')}</Field.Label>
					<Field.Row>
						<TextInput
							value={file.name || ''}
							addon={<Button small primary onClick={handleUploadButtonClick} mb='neg-x4' mie='neg-x8'>
								<Icon name='upload' size='x12' />{t('Browse_Files')}
							</Button>}
						/>
					</Field.Row>
				</Field>
				<Field>
					<ButtonGroup>
						<Button disabled={!canSave || installing} onClick={install}>
							{!installing && t('Install')}
							{installing && <Throbber inheritColor/>}
						</Button>
						<Button onClick={handleCancel}>{t('Cancel')}</Button>
					</ButtonGroup>
				</Field>
			</FieldGroup>
		</Page.ScrollableContent>
	</Page>;
}

export default AppInstallPage;