Reader Manage Following: present a follow button if user appears to have entered a URL

client/lib/url/index.js

@@ -3,6 +3,7 @@
  */
 import { parse as parseUrl } from 'url';
 import { startsWith } from 'lodash';
+import url from 'url';
 
 /**
  * Internal dependencies
@@ -107,6 +108,41 @@ function urlToSlug( url ) {
 	return withoutHttp( url ).replace( /\//g, '::' );
 }
 
+/**
+ * Checks if the supplied string appears to be a URL.
+ * Looks only for the absolute basics:
+ *  - does it have a .suffix?
+ *  - does it have at least two parts separated by a dot?
+ *
+ * @param  {String}  query The string to check
+ * @return {Boolean} Does it appear to be a URL?
+ */
+function resemblesUrl( query ) {
+	let parsedUrl = url.parse( query );
+
+	// Make sure the query has a protocol - hostname ends up blank otherwise
+	if ( ! parsedUrl.protocol ) {
+		parsedUrl = url.parse( 'http://' + query );
+	}
+
+	if ( ! parsedUrl.hostname || parsedUrl.hostname.indexOf( '.' ) === -1 ) {
+		return false;
+	}
+
+	// Check for a valid-looking TLD
+	if ( parsedUrl.hostname.lastIndexOf( '.' ) > ( parsedUrl.hostname.length - 3 ) ) {
+		return false;
+	}
+
+	// Make sure the hostname has at least two parts separated by a dot
+	const hostnameParts = parsedUrl.hostname.split( '.' ).filter( Boolean );
+	if ( hostnameParts.length < 2 ) {
+		return false;
+	}
+
+	return true;
+}
+
 export default {
 	isOutsideCalypso,
 	isExternal,
@@ -116,5 +152,6 @@ export default {
 	setUrlScheme,
 	urlToSlug,
 	// [TODO]: Move lib/route/add-query-args contents here
-	addQueryArgs
+	addQueryArgs,
+	resemblesUrl,
 };

client/lib/url/test/index.js

@@ -13,6 +13,7 @@ import {
 	addSchemeIfMissing,
 	setUrlScheme,
 	urlToSlug,
+	resemblesUrl,
 } from '../';
 
 describe( 'withoutHttp', () => {
@@ -285,3 +286,45 @@ describe( 'urlToSlug()', () => {
 		expect( urlWithoutHttp ).to.equal( 'example.com::example::test123' );
 	} );
 } );
+
+describe( 'resemblesUrl()', () => {
+	it( 'should detect a URL', () => {
+		const source = 'http://example.com/path';
+		expect( resemblesUrl( source ) ).to.equal( true );
+	} );
+
+	it( 'should detect a URL without protocol', () => {
+		const source = 'example.com';
+		expect( resemblesUrl( source ) ).to.equal( true );
+	} );
+
+	it( 'should detect a URL with a query string', () => {
+		const source = 'http://example.com/path?query=banana&query2=pineapple';
+		expect( resemblesUrl( source ) ).to.equal( true );
+	} );
+
+	it( 'should detect a URL with a short suffix', () => {
+		const source = 'http://example.cc';
+		expect( resemblesUrl( source ) ).to.equal( true );
+	} );
+
+	it( 'should return false with adjacent dots', () => {
+		const source = '..com';
+		expect( resemblesUrl( source ) ).to.equal( false );
+	} );
+
+	it( 'should return false with spaced dots', () => {
+		const source = '. . .com';
+		expect( resemblesUrl( source ) ).to.equal( false );
+	} );
+
+	it( 'should return false with a single dot', () => {
+		const source = '.';
+		expect( resemblesUrl( source ) ).to.equal( false );
+	} );
+
+	it( 'should return false if the string is not a URL', () => {
+		const source = 'exampledotcom';
+		expect( resemblesUrl( source ) ).to.equal( false );
+	} );
+} );

client/reader/follow-button/follow-sources.jsx

@@ -5,7 +5,8 @@ const exported = {
 	SEARCH_RESULTS: 'search-results',
 	READER_SUBSCRIPTIONS: 'reader-subscriptions',
 	READER_FEED_SEARCH: 'reader-feed-search-result',
-	COMBINED_CARD: 'reader-combined-card'
+	COMBINED_CARD: 'reader-combined-card',
+	READER_FOLLOWING_MANAGE_URL_INPUT: 'reader-following-manage-url-input',
 };
 
 export default exported;
@@ -16,5 +17,6 @@ export const {
 	SEARCH_RESULTS,
 	READER_SUBSCRIPTIONS,
 	READER_FEED_SEARCH,
-	COMBINED_CARD
+	COMBINED_CARD,
+	READER_FOLLOWING_MANAGE_URL_INPUT,
 } = exported;

client/reader/following-manage/index.jsx

@@ -22,6 +22,9 @@ import FollowingManageSearchFeedsResults from './feed-search-results';
 import MobileBackToSidebar from 'components/mobile-back-to-sidebar';
 import { requestFeedSearch } from 'state/reader/feed-searches/actions';
 import { addQueryArgs } from 'lib/url';
+import FollowButton from 'reader/follow-button';
+import { READER_FOLLOWING_MANAGE_URL_INPUT } from 'reader/follow-button/follow-sources';
+import { resemblesUrl, addSchemeIfMissing, withoutHttp } from 'lib/url';
 
 class FollowingManage extends Component {
 	static propTypes = {
@@ -94,7 +97,7 @@ class FollowingManage extends Component {
 		this.resizeSearchBox();
 
 		// this is a total hack. In React-Virtualized you need to tell a WindowScroller when the things
-		// above it has moved with a call to updatePosision().  Our issue is we don't have a good moment
+		// above it has moved with a call to updatePosition().  Our issue is we don't have a good moment
 		// where we know that the content above the WindowScroller has settled down and so instead the solution
 		// here is to call updatePosition in a regular interval. the call takes about 0.1ms from empirical testing.
 		this.updatePosition = setInterval( () => {
@@ -129,14 +132,20 @@ class FollowingManage extends Component {
 			showMoreResults
 		} = this.props;
 		const searchPlaceholderText = translate( 'Search millions of sites' );
+		const showExistingSubscriptions = ! ( !! sitesQuery && showMoreResults );
+		const isSitesQueryUrl = resemblesUrl( sitesQuery );
+		let sitesQueryWithoutProtocol;
+		if ( isSitesQueryUrl ) {
+			sitesQueryWithoutProtocol = withoutHttp( sitesQuery );
+		}
 
 		return (
 			<ReaderMain className="following-manage">
 				<DocumentHead title={ 'Manage Following' } />
 				<MobileBackToSidebar>
 					<h1>{ translate( 'Manage Followed Sites' ) }</h1>
 				</MobileBackToSidebar>
-				{ ! searchResults && <QueryReaderFeedsSearch query={ sitesQuery } /> }
+				{ ! searchResults && ! isSitesQueryUrl && <QueryReaderFeedsSearch query={ sitesQuery } /> }
 				<h2 className="following-manage__header">{ translate( 'Follow Something New' ) }</h2>
 				<div ref={ this.handleStreamMounted } />
 				<div className="following-manage__fixed-area" ref={ this.handleSearchBoxMounted }>
@@ -153,8 +162,18 @@ class FollowingManage extends Component {
 							value={ sitesQuery }>
 						</SearchInput>
 					</CompactCard>
+
+					{ isSitesQueryUrl && (
+						<div className="following-manage__url-follow">
+							<FollowButton
+								followLabel={ translate( 'Follow %s', { args: sitesQueryWithoutProtocol } ) }
+								followingLabel={ translate( 'Following %s', { args: sitesQueryWithoutProtocol } ) }
+								siteUrl={ addSchemeIfMissing( sitesQuery, 'http' ) }
+								followSource={ READER_FOLLOWING_MANAGE_URL_INPUT } />
+						</div>
+					) }
 				</div>
-				{ !! sitesQuery && (
+				{ !! sitesQuery && ! isSitesQueryUrl && (
 					<FollowingManageSearchFeedsResults
 						searchResults={ searchResults }
 						showMoreResults={ showMoreResults }
@@ -165,7 +184,7 @@ class FollowingManage extends Component {
 						searchResultsCount={ searchResultsCount }
 					/>
 				) }
-				{ ! ( !! sitesQuery && showMoreResults ) && (
+				{ showExistingSubscriptions && (
 					<FollowingManageSubscriptions
 						width={ this.state.width }
 						query={ subsQuery }

client/reader/following-manage/style.scss

@@ -193,3 +193,34 @@
 		border: 0;
 	}
 }
+
+.following-manage__url-follow {
+	border-bottom: 1px solid lighten( $gray, 30% );
+	padding: 13px 0 10px;
+	display: flex;
+	justify-content: center;
+
+	.follow-button {
+		.gridicon {
+			fill: $blue-medium;
+		}
+
+		.follow-button__label {
+			color: $blue-medium;
+
+			@include breakpoint ("<660px" ) {
+				display: inline;
+			}
+		}
+
+		&.is-following {
+			.gridicon {
+				fill: $alert-green;
+			}
+
+			.follow-button__label {
+				color: $alert-green;
+			}
+		}
+	}
+}