Migrate a header for Tribes List to React (#1137)

Also partially migrate the tr-boards directive to React

modules/core/client/components/Board.js

@@ -0,0 +1,62 @@
+import React, { useEffect, useState } from 'react';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+import { selectPhoto } from '../services/photos.service';
+
+/**
+ * @param {string[]|string} names - array of names or a single name
+ *
+ * @returns {string} the provided name or randomly picked name from array
+ */
+function selectName(names) {
+  return Array.isArray(names) ? names[Math.floor(Math.random() * names.length)] : names;
+}
+
+/**
+ * Partially migrated tr-boards directive
+ * modules/core/client/directives/tr-boards.client.directive.js
+ *
+ * @TODO implement tr-boards-ignore-small directive
+ * @TODO implement primary, inset, error and maybe other attributes, which are currently board classes
+ *  and which could become attributes <Board primary inset error names="bokeh" />
+ */
+export default function Board({ names='bokeh', children, onDisplayPhoto=() => {}, onHidePhoto=() => {}, className, ...rest }) {
+
+  const [photo, setPhoto] = useState(null);
+
+  useEffect(() => {
+    // pick a name from provided names
+    const selectedName = selectName(names);
+    // select an appropriate photo by name
+    const photo = selectPhoto(selectedName);
+    const photoObject = { [selectedName]: photo };
+
+    // update the state with the selected photo
+    setPhoto(photo);
+
+    // inform the parent that the photo is displayed
+    // ...useful e.g. for displaying photo credits elsewere
+    onDisplayPhoto(photoObject);
+
+    // inform the parent that the photo is not displayed anymore
+    return () => onHidePhoto(photoObject);
+  }, []);
+
+  const style = photo ? { backgroundImage: `url("${photo.imageUrl}")` } : null;
+  return (
+    <section style={style} className={classNames('board', className)} {...rest}>
+      {children}
+    </section>
+  );
+}
+
+Board.propTypes = {
+  names: PropTypes.oneOfType([
+    PropTypes.string,
+    PropTypes.arrayOf(PropTypes.string),
+  ]).isRequired,
+  className: PropTypes.string,
+  children: PropTypes.node,
+  onDisplayPhoto: PropTypes.func,
+  onHidePhoto: PropTypes.func,
+};

modules/core/client/controllers/app.client.controller.js

@@ -231,6 +231,13 @@ function AppController(
       vm.photoCreditsCount++;
     });
 
+    $scope.$on('photoCreditsRemoved', function (scope, photo) {
+      const photoName = Object.keys(photo)[0];
+      // @TODO inconsistent results when there is the same photo displayed multiple times
+      delete vm.photoCredits[photoName];
+      vm.photoCreditsCount--;
+    });
+
   }
 
   /**

modules/tribes/client/components/TribesHeader.component.js

@@ -0,0 +1,43 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { useTranslation } from 'react-i18next';
+import Board from '@/modules/core/client/components/Board';
+
+export default function TribesHeader({ isLoggedIn, onDisplayPhoto, onHidePhoto }) {
+
+  const { t } = useTranslation('tribes');
+
+  return (
+    <Board
+      names="tribes-1"
+      className="tribes-header"
+      onDisplayPhoto={onDisplayPhoto}
+      onHidePhoto={onHidePhoto}
+    >
+      <div className="container">
+        <div className="row">
+          <div className="col-xs-12 text-center">
+            <br /><br />
+            <h2>{t('Discover Tribes')}</h2>
+            <br />
+            <p className="lead">
+              {t('Joining Tribes helps you find likeminded Trustroots members.')}
+            </p>
+            {!isLoggedIn && <div>
+              <hr className="hr-white hr-xs"/>
+              <a href="/signup" className="btn btn-action btn-default">
+                {t('Sign up with Trustroots')}
+              </a>
+            </div>}
+          </div>
+        </div>
+      </div>
+    </Board>
+  );
+}
+
+TribesHeader.propTypes = {
+  isLoggedIn: PropTypes.bool.isRequired,
+  onDisplayPhoto: PropTypes.func.isRequired,
+  onHidePhoto: PropTypes.func.isRequired,
+};

modules/tribes/client/controllers/tribes-list.client.controller.js

@@ -3,7 +3,7 @@ angular
   .controller('TribesListController', TribesListController);
 
 /* @ngInject */
-function TribesListController(tribes, $state, Authentication, TribeService) {
+function TribesListController(tribes, $state, Authentication, TribeService, $scope) {
 
   // ViewModel
   const vm = this;
@@ -22,4 +22,15 @@ function TribesListController(tribes, $state, Authentication, TribeService) {
     TribeService.fillCache(angular.copy(tribe));
     $state.go('tribes.tribe', { 'tribe': tribe.slug });
   }
+
+  /**
+   * Emit photo credits info
+   * @TODO remove this
+   */
+  vm.addPhotoCredits = function addPhotoCredits(photo) {
+    $scope.$emit('photoCreditsUpdated', photo);
+  };
+  vm.removePhotoCredits = function removePhotoCredits(photo) {
+    $scope.$emit('photoCreditsRemoved', photo);
+  };
 }

modules/tribes/client/views/tribes-list.client.view.html

@@ -1,23 +1,8 @@
-<section class="board tribes-header" tr-boards="'tribes-1'">
-  <div class="container">
-    <div class="row">
-      <div class="col-xs-12 text-center">
-        <br><br>
-        <h2>Discover Tribes</h2>
-        <br>
-        <p class="lead">
-          Joining Tribes helps you find likeminded Trustroots members.
-        </p>
-        <div ng-if="!app.user">
-          <hr class="hr-white hr-xs"/>
-          <a ui-sref="signup" class="btn btn-action btn-default">
-            Sign up with Trustroots
-          </a>
-        </div>
-      </div>
-    </div>
-  </div>
-</section>
+<tribes-header
+  isLoggedIn="!!app.user"
+  onDisplayPhoto="tribesList.addPhotoCredits"
+  onHidePhoto="tribesList.removePhotoCredits"
+></tribes-header>
 
 <section class="container container-spacer">