release version 1.0.0

Update dependencies

.eslintrc.json

@@ -3,26 +3,50 @@
     "browser": true,
     "es2020": true
   },
+  "globals": {
+    "MOBILIZON_CONNECTOR": "readonly"
+  },
+  "parser": "@babel/eslint-parser",
   "extends": [
     "eslint:recommended",
-    "plugin:ava/recommended"
+    "plugin:ava/recommended",
+    "plugin:@wordpress/eslint-plugin/recommended"
   ],
   "parserOptions": {
     "ecmaVersion": 11,
-    "sourceType": "module"
+    "requireConfigFile": false,
+    "sourceType": "module",
+    "babelOptions": {
+      "presets": ["@babel/preset-react"]
+    }
   },
   "plugins": [
-    "ava"
+    "ava",
+    "jsx"
   ],
   "rules": {
+    "import/no-unresolved": [
+      "off"
+    ],
     "indent": [
       "error",
       2
     ],
+    "no-console": [
+      "error", {
+        "allow": ["error"]
+      }
+    ],
+    "prettier/prettier": [
+      "off"
+    ],
     "quotes": [
       "error",
       "single"
     ],
+    "react/jsx-key": [
+      "off"
+    ],
     "semi": [
       "error",
       "never"

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x]
+        node-version: [18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
@@ -24,5 +24,7 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
-      - run: npm ci --omit=dev --ignore-scripts
+      - name: Upgrade NPM
+        run: npm install -g npm
+      - run: npm ci --ignore-scripts
       - run: npm run build-prod

.gitignore

@@ -3,3 +3,6 @@ build/
 coverage/
 node_modules/
 vendor/
+
+.phpunit.cache
+.phpunit.result.cache

.husky/pre-commit

@@ -1,5 +1,2 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
 npm test
 npx lint-staged

README.md

@@ -4,7 +4,7 @@ Connector for Mobilizon allows you to display the upcoming events of [Mobilizon]
 
 More details can be found in the [WordPress Plugin Directory](https://wordpress.org/plugins/connector-mobilizon/).
 
-The current changelog can be under [source/changelog.txt](source/changelog.txt).
+The current changelog can be found under [source/changelog.txt](source/changelog.txt).
 
 ## Development
 
@@ -21,18 +21,22 @@ The current changelog can be under [source/changelog.txt](source/changelog.txt).
 
 ### Release procedure
 
-1. Make sure `changelog.txt` is up-to-date. Use a new version number and copy over the new section into `readme.txt`.
-2. Update `package.json` with the same version number.
-3. Update the `package-lock.json`: `npm i --package-lock-only`
-4. Build: `npm run build-prod`
-5. Make sure screenshots are up-to-date.
-6. Copy the built plugin into `/trunk` of SVN.
-7. Create a new tag of the new version: `svn cp trunk tags/<version>`
-8. Check the version number occurrences in both folders.
-9. Commit everything together to the release SVN: `svn ci -m "release version <version>"`
-10. Commit the new version in git with the same message.
-11. Tag the new version: `git tag v<version>`
-12. Push the new tag to the repository: `git push --tags`
+1. Make sure `changelog.txt` is up-to-date.
+2. Use a new version number and copy over the new section into `readme.txt`.
+3. Update `package.json` with the same version number.
+4. Update the `package-lock.json`: `npm i --package-lock-only`
+5. Build: `npm run build-prod`
+6. Make sure screenshots are up-to-date.
+7. Copy the built plugin into `/trunk` of SVN.
+8. Create a new tag of the new version: `svn cp trunk tags/<version>`
+9. Check the version number occurrences in both folders.
+10. Commit everything together to the release SVN: `svn ci -m "release version <version>"` Make sure to add new files beforehand.
+11. Commit the new version in git with the same message.
+12. Tag the new version: `git tag v<version>`
+13. Push the new tag to the repository: `git push --tags`
+14. Append `-next` to the version number in `package.json`.
+15. Update the `package-lock.json`: `npm i --package-lock-only`
+16. Commit: `git commit -am "prepare next release"`
 
 ### Other commands
 
@@ -43,3 +47,4 @@ The current changelog can be under [source/changelog.txt](source/changelog.txt).
 - Update PHP dependencies: `composer update`
 - Check for direct PHP dependency updates: `composer outdated --direct`
 - Format code with prettier: `npm run format`
+- Generate `vendor/autoload.php` file after creating new class: `composer dump-autoload`

babel.config.json

@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/preset-env", "@babel/preset-react"]
+}

composer.json

@@ -1 +1,10 @@
-{}
+{
+  "autoload": {
+    "psr-4": {
+      "MobilizonConnector\\": "source/includes/"
+    }
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^9.6"
+  }
+}

gulpfile.cjs

@@ -10,12 +10,12 @@ const FOLDER_BUILD = './build'
 function injectMetadata() {
   return src(
     [
-      FOLDER_BUILD + '/front/events-loader.js',
+      FOLDER_BUILD + '/front/block-events-loader.js',
       FOLDER_BUILD + '/' + PACKAGE.name + '.php',
-      FOLDER_BUILD + '/includes/constants.php',
+      FOLDER_BUILD + '/includes/Constants.php',
       FOLDER_BUILD + '/readme.txt',
     ],
-    { base: './' }
+    { base: './' },
   )
     .pipe(replace('<wordpress-author-name>', PACKAGE.author.name))
     .pipe(replace('<wordpress-author-url>', PACKAGE.author.url))
@@ -25,22 +25,22 @@ function injectMetadata() {
     .pipe(
       replace(
         '<wordpress-minimum-version>',
-        PACKAGE.additionalDetails.wordpressMinimumVersion
-      )
+        PACKAGE.additionalDetails.wordpressMinimumVersion,
+      ),
     )
     .pipe(replace('<wordpress-name>', PACKAGE.name))
     .pipe(replace('<wordpress-nice-name>', PACKAGE.additionalDetails.niceName))
     .pipe(
       replace(
         '<wordpress-php-minimum-version>',
-        PACKAGE.additionalDetails.phpMinimumVersion
-      )
+        PACKAGE.additionalDetails.phpMinimumVersion,
+      ),
     )
     .pipe(
       replace(
         '<wordpress-tested-up-to-version>',
-        PACKAGE.additionalDetails.wordpressTestedUpToVersion
-      )
+        PACKAGE.additionalDetails.wordpressTestedUpToVersion,
+      ),
     )
     .pipe(replace('<wordpress-version>', PACKAGE.version))
     .pipe(dest('.'))

package.json

@@ -1,18 +1,18 @@
 {
   "name": "connector-mobilizon",
-  "version": "0.9.0",
+  "version": "1.0.0",
   "description": "Display Mobilizon events in WordPress.",
   "private": true,
   "type": "module",
   "scripts": {
     "build-dev": "webpack --mode=development && gulp inject",
-    "build-prod": "ava && webpack --mode=production && gulp inject",
+    "build-prod": "rimraf -- build && ava && webpack --mode=production && gulp inject",
     "clean": "rimraf -- build",
     "coverage": "c8 --all --reporter=html --reporter=text --include=source/**/*.js ava",
     "eslint": "npx eslint source/**/*.js",
     "format": "npx prettier --write .",
-    "prepare": "husky install",
-    "test": "ava"
+    "prepare": "husky",
+    "test": "ava && ./vendor/bin/phpunit"
   },
   "author": {
     "name": "Daniel Waxweiler",
@@ -24,30 +24,33 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
-    "graphql": "16.5.0",
-    "graphql-request": "4.2.0",
-    "luxon": "2.4.0",
-    "object-hash": "3.0.0"
+    "graphql": "16.8.1",
+    "luxon": "3.4.4"
   },
   "devDependencies": {
-    "@babel/core": "7.17.12",
-    "@babel/preset-env": "7.17.12",
-    "ava": "4.2.0",
-    "babel-loader": "8.2.5",
-    "c8": "7.11.3",
-    "copy-webpack-plugin": "11.0.0",
-    "eslint": "8.15.0",
-    "eslint-plugin-ava": "13.2.0",
+    "@babel/core": "7.24.4",
+    "@babel/eslint-parser": "7.24.1",
+    "@babel/preset-env": "7.24.4",
+    "@babel/preset-react": "7.24.1",
+    "@wordpress/eslint-plugin": "17.12.0",
+    "ava": "6.1.2",
+    "babel-loader": "9.1.3",
+    "browser-env": "3.3.0",
+    "c8": "9.1.0",
+    "copy-webpack-plugin": "12.0.2",
+    "eslint": "8.57.0",
+    "eslint-plugin-ava": "14.0.0",
+    "eslint-plugin-jsx": "0.1.0",
+    "eslint-plugin-react": "7.34.1",
     "esm": "3.2.25",
     "gulp": "4.0.2",
-    "gulp-replace": "1.1.3",
-    "husky": "8.0.1",
-    "jsdom": "19.0.0",
-    "lint-staged": "12.4.1",
-    "prettier": "2.6.2",
-    "rimraf": "3.0.2",
-    "webpack": "5.72.1",
-    "webpack-cli": "4.9.2"
+    "gulp-replace": "1.1.4",
+    "husky": "9.0.11",
+    "lint-staged": "15.2.2",
+    "prettier": "3.2.5",
+    "rimraf": "5.0.5",
+    "webpack": "5.91.0",
+    "webpack-cli": "5.1.4"
   },
   "ava": {
     "files": [
@@ -58,7 +61,7 @@
     "niceName": "Connector for Mobilizon",
     "phpMinimumVersion": 7.4,
     "wordpressMinimumVersion": 5.6,
-    "wordpressTestedUpToVersion": 6
+    "wordpressTestedUpToVersion": "6.5"
   },
   "lint-staged": {
     "source/**/*.js": "eslint",

phpunit.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         cacheResultFile=".phpunit.cache/test-results"
+         executionOrder="depends,defects"
+         forceCoversAnnotation="false"
+         beStrictAboutCoversAnnotation="true"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         convertDeprecationsToExceptions="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage cacheDirectory=".phpunit.cache/code-coverage"
+              processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">source/includes</directory>
+        </include>
+    </coverage>
+</phpunit>

qodana.yaml

@@ -0,0 +1,2 @@
+version: '1.0'
+linter: jetbrains/qodana-js:2022.3-eap

source/changelog.txt

@@ -6,6 +6,62 @@
 #### Fixed
 #### Security
 
+### [1.0.0]
+#### Added
+- Display name of group when it cannot be found
+#### Changed
+- Let backend do requests to API of Mobilizon instance for increased privacy
+- Update dependencies
+#### Fixed
+- Fix displaying more than one block in the editor
+
+### [0.11.5]
+#### Changed
+- Confirm compatibility with WordPress 6.5
+
+### [0.11.4]
+#### Changed
+- Confirm compatibility with WordPress 6.4
+- Update dependencies
+
+### [0.11.3]
+#### Fixed
+- Clean up distributed files
+
+### [0.11.2]
+#### Changed
+- Update dependencies
+- Confirm compatibility with WordPress 6.3
+
+### [0.11.1]
+#### Fixed
+- Revert minimum PHP version to 7.4 to allow some more time for upgrading PHP
+
+### [0.11.0]
+#### Changed
+- Update dependencies
+- Confirm compatibility with WordPress 6.2
+#### Security
+- Set minimum PHP version to oldest stable 8.0
+
+### [0.10.1]
+#### Changed
+- Confirm compatibility with WordPress 6.1
+- Update dependencies
+
+### [0.10.0]
+#### Added
+- Add Gutenberg events list block
+- Show loading indicator during request
+#### Changed
+- Set list style type to none and left padding to zero for all occurences
+- Move shortcut usage description into installation section in `readme.txt`
+- Update dependencies
+
+### [0.9.1] - 2020-05-19
+#### Fixed
+- Fix WordPress compatibility version number
+
 ### [0.9.0] - 2020-05-19
 #### Added
 - Improve explanation of group name filter

source/connector-mobilizon.php

@@ -10,10 +10,18 @@
  * License:           <wordpress-license>
  */
 
-require_once __DIR__ . '/includes/constants.php';
-require_once __DIR__ . '/includes/settings.php';
-require_once __DIR__ . '/includes/events-list-shortcut.php';
-require_once __DIR__ . '/includes/events-list-widget.php';
+require_once __DIR__ . '/includes/exceptions/GeneralException.php';
+require_once __DIR__ . '/includes/exceptions/GroupNotFoundException.php';
+require_once __DIR__ . '/includes/Constants.php';
+require_once __DIR__ . '/includes/Api.php';
+require_once __DIR__ . '/includes/EventsCache.php';
+require_once __DIR__ . '/includes/Settings.php';
+require_once __DIR__ . '/includes/DateTimeWrapper.php';
+require_once __DIR__ . '/includes/Formatter.php';
+require_once __DIR__ . '/includes/GraphQlClient.php';
+require_once __DIR__ . '/includes/EventsListBlock.php';
+require_once __DIR__ . '/includes/EventsListShortcut.php';
+require_once __DIR__ . '/includes/EventsListWidget.php';
 
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
@@ -23,10 +31,11 @@ if (!defined('ABSPATH')) {
 final class Mobilizon_Connector {
 
   private function __construct() {
-    add_action('init', [$this, 'register_settings']);
+    add_action('init', [$this, 'register_api']);
+    add_action('init', [$this, 'register_blocks']);
+    add_action('init', [$this, 'register_settings'], 1); // required for register_blocks
     add_action('init', [$this, 'register_shortcut']);
     add_action('widgets_init', [$this, 'register_widget']);
-    add_action('wp_enqueue_scripts', [$this, 'register_scripts']);
     register_activation_hook(__FILE__, [$this, 'enable_activation']);
   }
 
@@ -43,12 +52,26 @@ final class Mobilizon_Connector {
     MobilizonConnector\Settings::setDefaultOptions();
   }
 
-  public function register_settings() {
-    MobilizonConnector\Settings::init();
+  private function load_settings_globally_before_script($scriptName) {
+    $settings = array(
+      'isShortOffsetNameShown' => MobilizonConnector\Settings::isShortOffsetNameShown(),
+      'locale' => str_replace('_', '-', get_locale()),
+      'timeZone' => wp_timezone_string()
+    );
+    wp_add_inline_script($scriptName, 'var MOBILIZON_CONNECTOR = ' . json_encode($settings), 'before');
   }
 
-  public function register_scripts() {
-    wp_enqueue_script(MobilizonConnector\NAME . '-js', plugins_url('front/events-loader.js', __FILE__ ));
+  public function register_api() {
+    MobilizonConnector\Api::init();
+  }
+
+  public function register_blocks() {
+    $scriptName = MobilizonConnector\EventsListBlock::initAndReturnScriptName();
+    $this->load_settings_globally_before_script($scriptName);
+  }
+
+  public function register_settings() {
+    MobilizonConnector\Settings::init();
   }
 
   public function register_shortcut() {

source/front/block-events-loader.js

@@ -0,0 +1 @@
+import './blocks/events-list/index.js'

source/front/blocks/events-list/edit.js

@@ -0,0 +1,113 @@
+/* eslint-disable @wordpress/i18n-ellipsis */
+import {
+  clearEventsList,
+  displayErrorMessage,
+  displayEvents,
+  hideErrorMessages,
+  showLoadingIndicator,
+} from '../../events-displayer.js'
+
+const { InspectorControls, useBlockProps } = wp.blockEditor
+const { Panel, PanelBody } = wp.components
+const { useEffect } = wp.element
+const { __ } = wp.i18n
+
+const NAME = '<wordpress-name>'
+
+export default ({ attributes, setAttributes }) => {
+  let timer
+  const blockProps = useBlockProps({
+    className: NAME + '_events-list',
+  })
+  function reloadEventList(eventsCount, groupName) {
+    if (timer) {
+      clearTimeout(timer)
+    }
+    timer = setTimeout(async () => {
+      const container = document.getElementById(blockProps.id)
+      if (container) {
+        hideErrorMessages(container)
+        clearEventsList(container)
+        showLoadingIndicator(container)
+        let url = `/wp-json/connector-mobilizon/v1/events?eventsCount=${eventsCount}`
+        if (groupName) {
+          url += `&groupName=${groupName}`
+        }
+        await fetch(url)
+          .then((response) => response.text())
+          .then((data) => {
+            const events = JSON.parse(data)
+            displayEvents({
+              events,
+              document,
+              container,
+              maxEventsCount: eventsCount,
+            })
+          })
+          .catch((data) => {
+            displayErrorMessage({ data, container })
+          })
+      }
+    }, 500)
+  }
+  useEffect(() => {
+    reloadEventList(attributes.eventsCount, attributes.groupName)
+  }, [])
+  function updateEventsCount(event) {
+    let newValue = Number(event.target.value)
+    if (newValue < 1) newValue = 1
+    setAttributes({ eventsCount: newValue })
+    reloadEventList(newValue, attributes.groupName)
+  }
+  function updateGroupName(event) {
+    const newValue = event.target.value
+    setAttributes({ groupName: newValue })
+    reloadEventList(attributes.eventsCount, newValue)
+  }
+  return [
+    <InspectorControls>
+      <Panel>
+        <PanelBody title={__('Events List Settings', '<wordpress-name>')}>
+          <label
+            className="components-base-control__label"
+            htmlFor={NAME + '_events-count'}
+          >
+            {__('Number of events to show', '<wordpress-name>')}
+          </label>
+          <input
+            className="components-text-control__input"
+            type="number"
+            value={attributes.eventsCount}
+            onChange={updateEventsCount}
+            id={NAME + '_events-count'}
+          />
+          <label
+            className="components-base-control__label"
+            htmlFor={NAME + '_group-name'}
+          >
+            {__('Group name (optional)', '<wordpress-name>')}
+          </label>
+          <input
+            className="components-text-control__input"
+            type="text"
+            value={attributes.groupName}
+            onChange={updateGroupName}
+            id={NAME + '_group-name'}
+          />
+        </PanelBody>
+      </Panel>
+    </InspectorControls>,
+    <div {...blockProps}>
+      <div className="general-error" style={{ display: 'none' }}>
+        {__('The events could not be loaded!', '<wordpress-name>')}
+      </div>
+      <div className="group-not-found" style={{ display: 'none' }}>
+        {__('The group could not be found!', '<wordpress-name>')}
+      </div>
+      <div className="loading-indicator" style={{ display: 'none' }}>
+        {__('Loading...', '<wordpress-name>')}
+      </div>
+      <ul style={{ 'list-style-type': 'none', 'padding-left': 0 }}></ul>
+    </div>,
+  ]
+}

source/front/blocks/events-list/index.js

@@ -0,0 +1,7 @@
+import edit from './edit.js'
+
+const { registerBlockType } = wp.blocks
+
+const NAME = '<wordpress-name>'
+
+registerBlockType(NAME + '/events-list', { edit })

source/front/events-displayer-test.js

@@ -1,71 +1,85 @@
 import test from 'ava'
-import { JSDOM } from 'jsdom'
+import browserEnv from 'browser-env'
 
-import { displayEvents, displayErrorMessage } from './events-displayer.js'
-
-let document
+import {
+  displayEvents,
+  displayErrorMessage,
+  hideErrorMessages,
+  showLoadingIndicator,
+} from './events-displayer.js'
 
 test.before(() => {
-  document = new JSDOM().window.document
+  browserEnv()
+  window.MOBILIZON_CONNECTOR = {
+    locale: 'en-GB',
+    timeZone: 'utc',
+  }
 })
 
 test.beforeEach((t) => {
-  t.context.list = document.createElement('ul')
-  t.context.list.setAttribute('data-locale', 'en-GB')
-  t.context.list.setAttribute('data-maximum', '2')
-  t.context.list.setAttribute('data-time-zone', 'utc')
-  const listElement = document.createElement('li')
-  listElement.setAttribute('style', 'display: none;')
-  t.context.list.appendChild(listElement)
-  const listElement2 = document.createElement('li')
-  listElement2.setAttribute('style', 'display: none;')
-  t.context.list.appendChild(listElement2)
+  t.context.container = document.createElement('div')
+
+  const errorMessageGeneral = document.createElement('div')
+  errorMessageGeneral.setAttribute('class', 'general-error')
+  errorMessageGeneral.setAttribute('style', 'display: none;')
+  t.context.container.appendChild(errorMessageGeneral)
+
+  const errorMessageGroupNotFound = document.createElement('div')
+  errorMessageGroupNotFound.setAttribute('class', 'group-not-found')
+  errorMessageGroupNotFound.setAttribute('style', 'display: none;')
+  t.context.container.appendChild(errorMessageGroupNotFound)
+
+  const loadingIndicator = document.createElement('div')
+  loadingIndicator.setAttribute('class', 'loading-indicator')
+  loadingIndicator.setAttribute('style', 'display: none;')
+  t.context.container.appendChild(loadingIndicator)
+
+  const list = document.createElement('ul')
+  t.context.container.appendChild(list)
 })
 
 test('#displayEvents one event', (t) => {
-  const list = t.context.list
-  const data = {
-    events: {
-      elements: [
-        {
-          title: 'a',
-          url: 'b',
-          beginsOn: '2021-04-15T10:30:00Z',
-          endsOn: '2021-04-15T15:30:00Z',
-          physicalAddress: {
-            description: 'c',
-            locality: 'd',
-          },
-        },
-      ],
+  const events = [
+    {
+      title: 'a',
+      url: 'b',
+      beginsOn: '2021-04-15T10:30:00Z',
+      endsOn: '2021-04-15T15:30:00Z',
+      physicalAddress: {
+        description: 'c',
+        locality: 'd',
+      },
     },
-  }
-  displayEvents({ data, document, list })
-  t.is(list.children.length, 3)
-  t.is(list.children[2].childNodes[0].tagName, 'A')
-  t.is(list.children[2].childNodes[0].getAttribute('href'), 'b')
-  t.is(list.children[2].childNodes[0].childNodes[0].nodeValue, 'a')
-  t.is(list.children[2].childNodes[1].tagName, 'BR')
-  t.is(list.children[2].childNodes[2].nodeValue, '15/04/2021 10:30 - 15:30')
-  t.is(list.children[2].childNodes[3].tagName, 'BR')
-  t.is(list.children[2].childNodes[4].nodeValue, 'c, d')
+  ]
+  const container = t.context.container
+  displayEvents({ events, document, container, maxEventsCount: 2 })
+  const list = container.querySelector('ul')
+  t.is(list.children[0].childNodes[0].tagName, 'A')
+  t.is(list.children[0].childNodes[0].getAttribute('href'), 'b')
+  t.is(list.children[0].childNodes[0].childNodes[0].nodeValue, 'a')
+  t.is(list.children[0].childNodes[1].tagName, 'BR')
+  t.is(list.children[0].childNodes[2].nodeValue, '15/04/2021 10:30 - 15:30')
+  t.is(list.children[0].childNodes[3].tagName, 'BR')
+  t.is(list.children[0].childNodes[4].nodeValue, 'c, d')
 })
 
-test('#displayErrorMessage no children added', (t) => {
-  const list = t.context.list
-  displayErrorMessage({ data: '', list })
-  t.is(list.children.length, 2)
+test('#displayErrorMessage no list entries shown', (t) => {
+  const container = t.context.container
+  displayErrorMessage({ data: '', container })
+  const list = container.querySelector('ul')
+  t.is(list.children.length, 0)
 })
 
-test('#displayErrorMessage error message display', (t) => {
-  const list = t.context.list
-  displayErrorMessage({ data: '', list })
-  t.is(list.children[0].style.display, 'block')
-  t.is(list.children[1].style.display, 'none')
+test('#displayErrorMessage general error message display', (t) => {
+  const container = t.context.container
+  displayErrorMessage({ data: '', container })
+  t.is(container.querySelector('.general-error').style.display, 'block')
+  t.is(container.querySelector('.group-not-found').style.display, 'none')
+  t.is(container.querySelector('.loading-indicator').style.display, 'none')
 })
 
 test('#displayErrorMessage group not found error message display', (t) => {
-  const list = t.context.list
+  const container = t.context.container
   const data = {
     response: {
       errors: [
@@ -75,7 +89,29 @@ test('#displayErrorMessage group not found error message display', (t) => {
       ],
     },
   }
-  displayErrorMessage({ data, list })
-  t.is(list.children[0].style.display, 'none')
-  t.is(list.children[1].style.display, 'block')
+  displayErrorMessage({ data, container })
+  t.is(container.querySelector('.general-error').style.display, 'none')
+  t.is(container.querySelector('.group-not-found').style.display, 'block')
+  t.is(container.querySelector('.loading-indicator').style.display, 'none')
+})
+
+test('#showLoadingIndicator remove events', (t) => {
+  const container = t.context.container
+  const loadingIndicator = container.querySelector('.loading-indicator')
+  t.is(loadingIndicator.style.display, 'none')
+  showLoadingIndicator(container)
+  t.is(loadingIndicator.style.display, 'block')
+})
+
+test('#hideErrorMessages remove events', (t) => {
+  const container = t.context.container
+  const generalErrorMessage = container.querySelector('.general-error')
+  const groupNotFoundErrorMessage = container.querySelector('.group-not-found')
+  generalErrorMessage.style.display = 'block'
+  groupNotFoundErrorMessage.style.display = 'block'
+  t.is(generalErrorMessage.style.display, 'block')
+  t.is(groupNotFoundErrorMessage.style.display, 'block')
+  hideErrorMessages(container)
+  t.is(generalErrorMessage.style.display, 'none')
+  t.is(groupNotFoundErrorMessage.style.display, 'none')
 })

source/front/events-displayer.js

@@ -1,17 +1,21 @@
 import Formatter from './formatter.js'
 import { createAnchorElement } from './html-creator.js'
 
-export function displayEvents({ data, document, list }) {
-  const locale = list.getAttribute('data-locale')
-  const maxEventsCount = list.getAttribute('data-maximum')
-  const timeZone = list.getAttribute('data-time-zone')
-  const isShortOffsetNameShown = list.hasAttribute(
-    'data-is-short-offset-name-shown'
-  )
-  const events = data.events
-    ? data.events.elements
-    : data.group.organizedEvents.elements
+export function clearEventsList(container) {
+  const list = container.querySelector('ul')
+  list.replaceChildren()
+}
+
+export function displayEvents({ events, document, container, maxEventsCount }) {
+  hideLoadingIndicator(container)
+
+  const isShortOffsetNameShown =
+    window.MOBILIZON_CONNECTOR.isShortOffsetNameShown
+  const locale = window.MOBILIZON_CONNECTOR.locale
+  const timeZone = window.MOBILIZON_CONNECTOR.timeZone
+
   const eventsCount = Math.min(maxEventsCount, events.length)
+  const list = container.querySelector('ul')
   for (let i = 0; i < eventsCount; i++) {
     const li = document.createElement('li')
 
@@ -53,8 +57,8 @@ export function displayEvents({ data, document, list }) {
   }
 }
 
-export function displayErrorMessage({ data, list }) {
-  console.error(data)
+export function displayErrorMessage({ data, container }) {
+  hideLoadingIndicator(container)
   if (
     Object.prototype.hasOwnProperty.call(data, 'response') &&
     Object.prototype.hasOwnProperty.call(data.response, 'errors') &&
@@ -62,8 +66,26 @@ export function displayErrorMessage({ data, list }) {
     Object.prototype.hasOwnProperty.call(data.response.errors[0], 'code') &&
     data.response.errors[0].code === 'group_not_found'
   ) {
-    list.children[1].style.display = 'block'
+    const message = container.querySelector('.group-not-found')
+    message.style.display = 'block'
   } else {
-    list.children[0].style.display = 'block'
+    const message = container.querySelector('.general-error')
+    message.style.display = 'block'
+    console.error(data)
   }
 }
+
+export function showLoadingIndicator(container) {
+  const indicator = container.querySelector('.loading-indicator')
+  indicator.style.display = 'block'
+}
+
+function hideLoadingIndicator(container) {
+  const indicator = container.querySelector('.loading-indicator')
+  indicator.style.display = 'none'
+}
+
+export function hideErrorMessages(container) {
+  container.querySelector('.group-not-found').style.display = 'none'
+  container.querySelector('.general-error').style.display = 'none'
+}

source/front/events-loader.js

@@ -1,22 +0,0 @@
-import { displayEvents, displayErrorMessage } from './events-displayer.js'
-import * as GraphqlWrapper from './graphql-wrapper.js'
-
-const NAME = '<wordpress-name>'
-
-document.addEventListener('DOMContentLoaded', () => {
-  const eventLists = document.getElementsByClassName(NAME + '_events-list')
-  for (const list of eventLists) {
-    const url = list.getAttribute('data-url') + '/api'
-    const limit = parseInt(list.getAttribute('data-maximum'))
-    const groupName = list.getAttribute('data-group-name')
-    if (groupName) {
-      GraphqlWrapper.getUpcomingEventsByGroupName({ url, limit, groupName })
-        .then((data) => displayEvents({ data, document, list }))
-        .catch((data) => displayErrorMessage({ data, list }))
-    } else {
-      GraphqlWrapper.getUpcomingEvents({ url, limit })
-        .then((data) => displayEvents({ data, document, list }))
-        .catch((data) => displayErrorMessage({ data, list }))
-    }
-  }
-})

source/front/graphql-wrapper.js

@@ -1,78 +0,0 @@
-import SessionCache from './session-cache.js'
-import { request } from 'graphql-request'
-import DateTimeWrapper from './date-time-wrapper.js'
-
-export function getUpcomingEvents({ url, limit }) {
-  const query = `
-    query ($limit: Int) {
-      events(limit: $limit) {
-        elements {
-          id,
-          title,
-          url,
-          beginsOn,
-          endsOn,
-          physicalAddress {
-            description,
-            locality
-          }
-        },
-        total
-      }
-    }
-  `
-  const dataInCache = SessionCache.get(sessionStorage, {
-    url,
-    query,
-    variables: { limit },
-  })
-  if (dataInCache !== null) {
-    return Promise.resolve(dataInCache)
-  }
-  return request(url, query, { limit }).then((data) => {
-    SessionCache.add(sessionStorage, { url, query, variables: { limit } }, data)
-    return Promise.resolve(data)
-  })
-}
-
-export function getUpcomingEventsByGroupName({ url, limit, groupName }) {
-  const query = `
-    query ($afterDatetime: DateTime, $groupName: String!, $limit: Int) {
-      group(preferredUsername: $groupName) {
-        organizedEvents(afterDatetime: $afterDatetime, limit: $limit) {
-          elements {
-            id,
-            title,
-            url,
-            beginsOn,
-            endsOn,
-            physicalAddress {
-              description,
-              locality
-            }
-          },
-          total
-        }
-      }
-    }
-  `
-  const afterDatetime = DateTimeWrapper.getCurrentDatetimeAsString()
-  const dataInCache = SessionCache.get(sessionStorage, {
-    url,
-    query,
-    variables: { afterDatetime, groupName, limit },
-  })
-  if (dataInCache !== null) {
-    return Promise.resolve(dataInCache)
-  }
-  return request(url, query, { afterDatetime, groupName, limit }).then(
-    (data) => {
-      SessionCache.add(
-        sessionStorage,
-        { url, query, variables: { afterDatetime, groupName, limit } },
-        data
-      )
-      return Promise.resolve(data)
-    }
-  )
-}

source/front/html-creator-test.js

@@ -1,12 +1,10 @@
 import test from 'ava'
-import { JSDOM } from 'jsdom'
+import browserEnv from 'browser-env'
 
 import { createAnchorElement } from './html-creator.js'
 
-let document
-
 test.beforeEach(() => {
-  document = new JSDOM().window.document
+  browserEnv()
 })
 
 test('#createAnchorElement usual parameters', (t) => {

source/front/object-hash-wrapper-test.js

@@ -1,6 +0,0 @@
-import test from 'ava'
-import hash from './object-hash-wrapper.js'
-
-test('#hash object', (t) => {
-  t.is(hash({ foo: 'bar' }), 'a75c05bdca7d704bdfcd761913e5a4e4636e956b')
-})

source/front/object-hash-wrapper.js

@@ -1,5 +0,0 @@
-import objectHash from 'object-hash'
-
-export default function hash(object) {
-  return objectHash(object)
-}

source/front/session-cache-test.js

@@ -1,33 +0,0 @@
-import test from 'ava'
-import SessionCache from './session-cache.js'
-
-const fakeStorage = {
-  elements: {},
-
-  clear() {
-    this.elements = {}
-  },
-
-  getItem(key) {
-    const value = this.elements[key]
-    if (value === undefined) return null
-    return value
-  },
-
-  setItem(key, value) {
-    this.elements[key] = value
-  },
-}
-
-test.afterEach(() => {
-  fakeStorage.clear()
-})
-
-test('#add & #get', (t) => {
-  SessionCache.add(fakeStorage, { a: 'b' }, { c: 'd' })
-  t.deepEqual(SessionCache.get(fakeStorage, { a: 'b' }), { c: 'd' })
-})
-
-test('#get no entry', (t) => {
-  t.is(SessionCache.get(fakeStorage, { a: 'bb' }), null)
-})

source/front/session-cache.js

@@ -1,27 +0,0 @@
-import hash from './object-hash-wrapper.js'
-
-const MAX_AGE_IN_MS = 120000
-
-export default class SessionCache {
-  static add(storage, parameters, data) {
-    const key = hash(parameters)
-    const timestamp = Date.now()
-    const value = {
-      data,
-      timestamp,
-    }
-    storage.setItem(key, JSON.stringify(value))
-  }
-
-  static get(storage, parameters) {
-    const key = hash(parameters)
-    const value = JSON.parse(storage.getItem(key))
-    if (
-      value &&
-      value.timestamp &&
-      value.timestamp > Date.now() - MAX_AGE_IN_MS
-    )
-      return value.data
-    return null
-  }
-}

source/includes/Api.php

@@ -0,0 +1,53 @@
+<?php
+namespace MobilizonConnector;
+
+class Api {
+  public static function init() {
+    add_action('rest_api_init', 'MobilizonConnector\Api::init_api');
+  }
+
+  public static function init_api() {
+    register_rest_route(
+      NAME . '/v1',
+      '/events',
+      [
+        'methods' => 'GET',
+        'callback' => 'MobilizonConnector\Api::get_events',
+        'args' => [
+          'eventsCount' => [
+            'required' => true,
+            'validate_callback' => function($param, $request, $key) {
+              return is_numeric($param) && $param > 0;
+            }
+          ],
+          'groupName' => [
+            'validate_callback' => function($param, $request, $key) {
+              return !is_numeric($param);
+            }
+          ]
+        ],
+        'permission_callback' => '__return_true',
+      ]
+      );
+  }
+
+  public static function get_events($request) {
+    $eventsCount = $request['eventsCount'];
+    $groupName = isset($request['groupName']) ? $request['groupName'] : '';
+
+    $url = Settings::getUrl();
+
+    try {
+      if ($groupName) {
+        $events = GraphQlClient::get_upcoming_events_by_group_name($url, (int) $eventsCount, $groupName);
+      } else {
+        $events = GraphQlClient::get_upcoming_events($url, (int) $eventsCount);
+      }
+      return $events;
+    } catch (GeneralException $e) {
+      return new \WP_Error('events_not_loading', 'The events could not be loaded!', array('status' => 500));
+    } catch (GroupNotFoundException $e) {
+      return new \WP_Error('group_not_found', sprintf('The group "%s" could not be found!', $groupName), array('status' => 404));
+    }
+  }
+}

source/includes/Constants.php

@@ -1,11 +1,6 @@
 <?php
 namespace MobilizonConnector;
 
-// Exit if this file is called directly.
-if (!defined('ABSPATH')) {
-  exit;
-}
-
 const DEFAULT_EVENTS_COUNT = 5;
 const NAME = '<wordpress-name>';
 const NICE_NAME = '<wordpress-nice-name>';

source/includes/DateTimeWrapper.php

@@ -0,0 +1,34 @@
+<?php
+namespace MobilizonConnector;
+
+final class DateTimeWrapper {
+  private $dateTime;
+  private $locale;
+  private $timeZone;
+
+  public function __construct(string $text, string $locale = 'en-GB', string $timeZone = 'utc') {
+    if (!$locale) {
+      $locale = 'en-GB';
+    }
+    if (!$timeZone) {
+      $timeZone = 'utc';
+    }
+    $this->dateTime = new \DateTime($text);
+    $this->locale = $locale;
+    $this->timeZone = new \DateTimeZone($timeZone);
+  }
+
+  public function get24Time(): string {
+    $formatter = \IntlDateFormatter::create($this->locale, \IntlDateFormatter::NONE, \IntlDateFormatter::SHORT, $this->timeZone);
+    return $formatter->format($this->dateTime);
+  }
+
+  public function getShortDate(): string {
+    $formatter = \IntlDateFormatter::create($this->locale, \IntlDateFormatter::SHORT, \IntlDateFormatter::NONE, $this->timeZone);
+    return $formatter->format($this->dateTime);
+  }
+
+  public function getTimeZoneName(): string {
+    return $this->timeZone->getName();
+  }
+}

source/includes/EventsCache.php

@@ -0,0 +1,19 @@
+<?php
+namespace MobilizonConnector;
+
+final class EventsCache {
+
+  private static $MAX_AGE_IN_S = 120;
+
+  public static function set(array $parameters, mixed $data): void {
+    // md5 is used as key must be 172 characters or fewer in length.
+    $key = md5(json_encode($parameters));
+    set_transient($key, $data, self::$MAX_AGE_IN_S);
+  }
+
+  public static function get(array $parameters): mixed {
+    $key = md5(json_encode($parameters));
+    $data = get_transient($key);
+    return $data;
+  }
+}

source/includes/EventsListBlock.php

@@ -0,0 +1,65 @@
+<?php
+namespace MobilizonConnector;
+
+class EventsListBlock {
+
+  public static function initAndReturnScriptName(): string {
+    $scriptName = NAME . '-block-starter';
+    wp_register_script($scriptName, plugins_url(NAME . '/front/block-events-loader.js'), [
+        'wp-block-editor',
+        'wp-blocks',
+        'wp-components',
+        'wp-i18n'
+      ]);
+    register_block_type(NAME . '/events-list', [
+      'api_version' => 2,
+      'title' => __('Events List', 'connector-mobilizon'),
+      'description' =>  __('A list of the upcoming events of the connected Mobilizon instance.', 'connector-mobilizon'),
+      'category' => 'widgets',
+      'icon' => 'list-view',
+      'supports' => [
+        'html' => false
+      ],
+      'attributes' => [
+        'eventsCount' => [
+          'type' => 'number',
+          'default' => 3,
+        ],
+        'groupName' => [
+          'type' => 'string',
+        ],
+      ],
+      'editor_script' => $scriptName,
+      'render_callback' => 'MobilizonConnector\EventsListBlock::render',
+    ]);
+    return $scriptName;
+  }
+
+  public static function render($block_attributes, $content) {
+    $url = Settings::getUrl();
+    $eventsCount = $block_attributes['eventsCount'];
+    $groupName = isset($block_attributes['groupName']) ? $block_attributes['groupName'] : '';
+
+    ob_start();
+    try {
+      if ($groupName) {
+        $events = GraphQlClient::get_upcoming_events_by_group_name($url, (int) $eventsCount, $groupName);
+      } else {
+        $events = GraphQlClient::get_upcoming_events($url, (int) $eventsCount);
+      }
+
+      $classNamePrefix = NAME;
+      $locale = get_locale();
+      $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+      $timeZone = wp_timezone_string();
+
+      require dirname(__DIR__) . '/view/events-list.php';
+    } catch (GeneralException $e) {
+      require dirname(__DIR__) . '/view/events-list-not-loaded.php';
+    } catch (GroupNotFoundException $e) {
+      require dirname(__DIR__) . '/view/events-list-group-not-found.php';
+    }
+    $output = ob_get_clean();
+    return $output;
+  }
+}

source/includes/EventsListShortcut.php

@@ -1,11 +1,6 @@
 <?php
 namespace MobilizonConnector;
 
-// Exit if this file is called directly.
-if (!defined('ABSPATH')) {
-  exit;
-}
-
 class EventsListShortcut {
   
   public static function init() {
@@ -24,16 +19,29 @@ class EventsListShortcut {
       ), $atts
     );
 
-    $classNamePrefix = NAME;
-    $eventsCount = $atts_with_overriden_defaults['events-count'];
-    $locale = str_replace('_', '-', get_locale());
-    $groupName = $atts_with_overriden_defaults['group-name'];
     $url = Settings::getUrl();
-    $timeZone = wp_timezone_string();
-    $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+    $eventsCount = $atts_with_overriden_defaults['events-count'];
+    $groupName = $atts_with_overriden_defaults['group-name'];
 
     ob_start();
-    require dirname(__DIR__) . '/view/events-list.php';
+    try {
+      if ($groupName) {
+        $events = GraphQlClient::get_upcoming_events_by_group_name($url, (int) $eventsCount, $groupName);
+      } else {
+        $events = GraphQlClient::get_upcoming_events($url, (int) $eventsCount);
+      }
+
+      $classNamePrefix = NAME;
+      $locale = get_locale();
+      $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+      $timeZone = wp_timezone_string();
+
+      require dirname(__DIR__) . '/view/events-list.php';
+    } catch (GeneralException $e) {
+      require dirname(__DIR__) . '/view/events-list-not-loaded.php';
+    } catch (GroupNotFoundException $e) {
+      require dirname(__DIR__) . '/view/events-list-group-not-found.php';
+    }
     $output = ob_get_clean();
     return $output;
   }

source/includes/EventsListWidget.php

@@ -1,11 +1,6 @@
 <?php
 namespace MobilizonConnector;
 
-// Exit if this file is called directly.
-if (!defined('ABSPATH')) {
-  exit;
-}
-
 class EventsListWidget extends \WP_Widget {
 
   public function __construct() {
@@ -25,15 +20,28 @@ class EventsListWidget extends \WP_Widget {
       echo $args['before_title'].apply_filters('widget_title', $options['title']).$args['after_title'];
     }
 
-    $classNamePrefix = NAME;
-    $eventsCount = $options['eventsCount'];
-    $locale = str_replace('_', '-', get_locale());
-    $groupName = isset($options['groupName']) ? $options['groupName'] : '';
     $url = Settings::getUrl();
-    $timeZone = wp_timezone_string();
-    $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+    $eventsCount = $options['eventsCount'];
+    $groupName = isset($options['groupName']) ? $options['groupName'] : '';
 
-    require dirname(__DIR__) . '/view/events-list.php';
+    try {
+      if ($groupName) {
+        $events = GraphQlClient::get_upcoming_events_by_group_name($url, (int) $eventsCount, $groupName);
+      } else {
+        $events = GraphQlClient::get_upcoming_events($url, (int) $eventsCount);
+      }
+
+      $classNamePrefix = NAME;
+      $locale = get_locale();
+      $isShortOffsetNameShown = Settings::isShortOffsetNameShown();
+      $timeZone = wp_timezone_string();
+  
+      require dirname(__DIR__) . '/view/events-list.php';
+    } catch (GeneralException $e) {
+      require dirname(__DIR__) . '/view/events-list-not-loaded.php';
+    } catch (GroupNotFoundException $e) {
+      require dirname(__DIR__) . '/view/events-list-group-not-found.php';
+    }
 
     echo $args['after_widget'];
   }

source/includes/Formatter.php

@@ -0,0 +1,42 @@
+<?php
+namespace MobilizonConnector;
+
+final class Formatter
+{
+  public static function format_date(string $locale, string $timeZone, string $start, ?string $end, bool $isShortOffsetNameShown): string {
+    $startDateTime = new DateTimeWrapper($start, $locale, $timeZone);
+    $dateText = $startDateTime->getShortDate();
+    $dateText .= ' ' . $startDateTime->get24Time();
+    if (!$end && $isShortOffsetNameShown) {
+      $dateText .= ' (' . $startDateTime->getTimeZoneName() . ')';
+    }
+    if ($end) {
+      $endDateTime = new DateTimeWrapper($end, $locale, $timeZone);
+      if ($startDateTime->getShortDate() != $endDateTime->getShortDate()) {
+        $dateText .= ' - ';
+        $dateText .= $endDateTime->getShortDate() . ' ';
+      } else {
+        $dateText .= ' - ';
+      }
+      $dateText .= $endDateTime->get24Time();
+      if ($isShortOffsetNameShown) {
+        $dateText .= ' (' . $endDateTime->getTimeZoneName() . ')';
+      }
+    }
+    return $dateText;
+  }
+
+  public static function format_location(string $description, string $locality): string {
+    $location = '';
+    if ($description && trim($description)) {
+      $location .= trim($description);
+    }
+    if ($location && $locality) {
+      $location .= ', ';
+    }
+    if ($locality) {
+      $location .= $locality;
+    }
+    return $location;
+  }
+}

source/includes/GraphQlClient.php

@@ -0,0 +1,113 @@
+<?php
+namespace MobilizonConnector;
+
+final class GraphQlClient {
+
+  public static function query(string $endpoint, string $query, array $variables = [], ?string $token = null): array
+  {
+    $headers = ['Content-Type: application/json'];
+    if ($token !== null) {
+        $headers[] = "Authorization: bearer $token";
+    }
+
+    $context = stream_context_create([
+        'http' => [
+            'method' => 'POST',
+            'header' => $headers,
+            'content' => json_encode(['query' => $query, 'variables' => $variables]),
+        ]
+      ]);
+    $data = @file_get_contents($endpoint, false, $context);
+
+    if ($data === false) {
+      $error = error_get_last();
+      throw new \ErrorException($error['message'], $error['type']);
+    }
+
+    return json_decode($data, true);
+  }
+
+  public static function get_upcoming_events(string $url, int $limit): array {
+    $query = <<<'GRAPHQL'
+      query ($limit: Int) {
+        events(limit: $limit) {
+          elements {
+            id,
+            title,
+            url,
+            beginsOn,
+            endsOn,
+            physicalAddress {
+              description,
+              locality
+            }
+          },
+          total
+        }
+      }
+      GRAPHQL;
+
+    $cachedEvents = EventsCache::get(['url' => $url, 'query' => $query, 'limit' => $limit]);
+    if ($cachedEvents !== false) {
+      return $cachedEvents;
+    }
+
+    $endpoint = $url . '/api';
+    $data = self::query($endpoint, $query, ['limit' => $limit]);
+    self::checkData($data);
+
+    $events = $data['data']['events']['elements'];
+    EventsCache::set(['url' => $url, 'query' => $query, 'limit' => $limit], $events);
+    return $events;
+  }
+
+  public static function get_upcoming_events_by_group_name(string $url, int $limit, string $groupName): array {
+    $query = <<<'GRAPHQL'
+      query ($afterDatetime: DateTime, $groupName: String!, $limit: Int) {
+        group(preferredUsername: $groupName) {
+          organizedEvents(afterDatetime: $afterDatetime, limit: $limit) {
+            elements {
+              id,
+              title,
+              url,
+              beginsOn,
+              endsOn,
+              physicalAddress {
+                description,
+                locality
+              }
+            },
+            total
+          }
+        }
+      }
+      GRAPHQL;
+
+    $afterDatetime = date(\DateTime::ISO8601);
+
+    $cachedEvents = EventsCache::get(['url' => $url, 'query' => $query, 'afterDatetime' => $afterDatetime, 'groupName' => $groupName, 'limit' => $limit]);
+    if ($cachedEvents !== false) {
+      return $cachedEvents;
+    }
+
+    $endpoint = $url . '/api';
+    $data = self::query($endpoint, $query, ['afterDatetime' => $afterDatetime, 'groupName' => $groupName, 'limit' => $limit]);
+    self::checkData($data);
+
+    $events = $data['data']['group']['organizedEvents']['elements'];
+    EventsCache::set(['url' => $url, 'query' => $query, 'afterDatetime' => $afterDatetime, 'groupName' => $groupName, 'limit' => $limit], $events);
+    return $events;
+  }
+
+  private static function checkData($data) {
+    if (isset($data['errors'])) {
+      if (count($data['errors']) > 0 &&
+          isset($data['errors'][0]['code']) &&
+          $data['errors'][0]['code'] === 'group_not_found') {
+        throw new GroupNotFoundException(serialize($data['errors'][0]));
+      } else {
+        throw new GeneralException(serialize($data['errors']));
+      }
+    }
+  }
+}

source/includes/Settings.php

@@ -1,11 +1,6 @@
 <?php
 namespace MobilizonConnector;
 
-// Exit if this file is called directly.
-if (!defined('ABSPATH')) {
-  exit;
-}
-
 class Settings {
 
   private static $DEFAULT_OPTION_URL = 'https://mobilizon.fr';

source/includes/exceptions/GeneralException.php

@@ -0,0 +1,12 @@
+<?php
+namespace MobilizonConnector;
+
+class GeneralException extends \Exception {
+  public function __construct($message, $code = 0, Throwable $previous = null) {
+    parent::__construct($message, $code, $previous);
+  }
+
+  public function __toString() {
+    return __CLASS__ . ": [{$this->code}]: {$this->message}\n";
+}
+}

source/includes/exceptions/GroupNotFoundException.php

@@ -0,0 +1,12 @@
+<?php
+namespace MobilizonConnector;
+
+class GroupNotFoundException extends \Exception {
+  public function __construct($message, $code = 0, Throwable $previous = null) {
+    parent::__construct($message, $code, $previous);
+  }
+
+  public function __toString() {
+    return __CLASS__ . ": [{$this->code}]: {$this->message}\n";
+}
+}

source/readme.txt

@@ -15,29 +15,97 @@ License: <wordpress-license>
 <wordpress-nice-name> allows you to display the upcoming events of [Mobilizon](https://joinmobilizon.org/), which is a federated event listing platform, on your WordPress website.
 
 Features
-- Display events as widget and as shortcut
-- Display events' title, date, and location if available
-- Cache requests' responses for 2 minutes in the browser's `sessionStorage`
-- Configure number of events to show per widget and per shortcut
-- Optionally filter events by a specific group per widget and per shortcut
+- Display events as Gutenberg block, as widget and as shortcut
+- Display events' title with link, date, and location, if available
+- Cache requests' responses for 2 minutes in the database
+- Configure number of events to show per block, per widget and per shortcut
+- Optionally filter events by a specific public group per block, per widget and per shortcut
 - Set the URL of the Mobilizon instance in the settings
 - Toggle adding named offset in brackets after the time in the settings
 
+The source code is available on [Github](https://github.com/dwaxweiler/connector-mobilizon).
+
+## Installation
+
 Shortcut format with limiting the number of events to show to 3 for example: `[<wordpress-name>-events-list events-count=3]`
 
 Optionally, you can only show the events of a specific group by indicatings its name: `[<wordpress-name>-events-list events-count=3 group-name="mygroup"]`
 You have to use their username, e.g. `@nosliensvivants`, and append the name of their instance if they use a different one, e.g. `@yaam_berlin@mobilize.berlin`.
 
-The source code is available on [Github](https://github.com/dwaxweiler/connector-mobilizon).
-
 ## Screenshots
 1. Events list
 2. General settings
 3. Widget creation
 4. Shortcut creation
+5. Gutenberg block in editor
 
 ## Changelog
 
+### [1.0.0]
+#### Added
+- Display name of group when it cannot be found
+#### Changed
+- Let backend do requests to API of Mobilizon instance for increased privacy
+- Update dependencies
+#### Fixed
+- Fix displaying more than one block in the editor
+
+### [0.11.5]
+#### Changed
+- Confirm compatibility with WordPress 6.5
+
+### [0.11.4]
+#### Changed
+- Confirm compatibility with WordPress 6.4
+- Update dependencies
+
+### [0.11.3]
+#### Fixed
+- Clean up distributed files
+
+### [0.11.2]
+#### Changed
+- Update dependencies
+- Confirm compatibility with WordPress 6.3
+
+### [0.11.1]
+#### Fixed
+- Revert minimum PHP version to 7.4 to allow some more time for upgrading PHP
+
+### [0.11.0]
+#### Changed
+- Update dependencies
+- Confirm compatibility with WordPress 6.2
+#### Security
+- Set minimum PHP version to oldest stable 8.0
+
+### [0.10.1]
+#### Changed
+- Confirm compatibility with WordPress 6.1
+- Update dependencies
+
+### [0.10.0]
+#### Added
+- Add Gutenberg events list block
+- Show loading indicator during request
+#### Changed
+- Set list style type to none and left padding to zero for all occurences
+- Move shortcut usage description into installation section in `readme.txt`
+- Update dependencies
+
+### [0.9.1] - 2020-05-19
+#### Fixed
+- Fix WordPress compatibility version number
+
+### [0.9.0] - 2020-05-19
+#### Added
+- Improve explanation of group name filter
+#### Changed
+- Update dependencies
+- Confirm compatibility with WordPress 6.0
+#### Fixed
+- Fix displaying error message for the case the group is not found
+
 ### [0.8.0] - 2022-01-09
 #### Added
 - Add support for older browsers using babel

source/uninstall.php

@@ -1,6 +1,6 @@
 <?php
-require_once __DIR__ . '/includes/constants.php';
-require_once __DIR__ . '/includes/settings.php';
+require_once __DIR__ . '/includes/Constants.php';
+require_once __DIR__ . '/includes/Settings.php';
 
 // If uninstall.php is not called by WordPress, exit.
 if (!defined('WP_UNINSTALL_PLUGIN')) {

source/view/events-list-group-not-found.php

@@ -0,0 +1,11 @@
+<?php
+namespace MobilizonConnector;
+
+// Exit if this file is called directly.
+if (!defined('ABSPATH')) {
+  exit;
+}
+?>
+<div class="<?php echo esc_attr($classNamePrefix); ?>_events-list">
+  <?php echo esc_html(sprintf(__('The group "%s" could not be found!', 'connector-mobilizon'), $groupName)); ?>
+</div>

source/view/events-list-not-loaded.php

@@ -0,0 +1,11 @@
+<?php
+namespace MobilizonConnector;
+
+// Exit if this file is called directly.
+if (!defined('ABSPATH')) {
+  exit;
+}
+?>
+<div class="<?php echo esc_attr($classNamePrefix); ?>_events-list">
+  <?php esc_html_e('The events could not be loaded!', 'connector-mobilizon'); ?>
+</div>

source/view/events-list-widget/form.php

@@ -1,4 +1,6 @@
 <?php
+namespace MobilizonConnector;
+
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
   exit;

source/view/events-list.php

@@ -1,16 +1,23 @@
 <?php
+namespace MobilizonConnector;
+
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
   exit;
 }
 ?>
-<ul class="<?php echo esc_attr($classNamePrefix); ?>_events-list"
-  data-url="<?php echo esc_attr($url); ?>"
-  data-locale="<?php echo esc_attr($locale); ?>"
-  data-maximum="<?php echo esc_attr($eventsCount); ?>"
-  data-group-name="<?php echo esc_attr($groupName); ?>"
-  data-time-zone="<?php echo esc_attr($timeZone); ?>"
-  <?php echo $isShortOffsetNameShown ? 'data-is-short-offset-name-shown' : ''; ?>>
-  <li style="display: none;"><?php esc_html_e('The events could not be loaded!', 'connector-mobilizon'); ?></li>
-  <li style="display: none;"><?php esc_html_e('The group could not be found!', 'connector-mobilizon'); ?></li>
-</ul>
+<div class="<?php echo esc_attr($classNamePrefix); ?>_events-list">
+  <ul style="list-style-type: none; padding-left: 0;">
+    <?php foreach($events as $event) { ?>
+    <li>
+      <a href="<?php echo esc_attr($event['url']); ?>"><?php echo esc_html_e($event['title']); ?></a>
+      <br>
+      <?php echo esc_html_e(Formatter::format_date($locale, $timeZone, $event['beginsOn'], $event['endsOn'], $isShortOffsetNameShown)); ?>
+      <?php if (isset($event['physicalAddress'])) { ?>
+      <br>
+      <?php echo esc_html_e(Formatter::format_location($event['physicalAddress']['description'], $event['physicalAddress']['locality'])) ?>
+      <?php } ?>
+    </li>
+    <?php } ?>
+  </ul>
+</div>

source/view/settings/is-short-offset-name-shown-field.php

@@ -1,4 +1,6 @@
 <?php
+namespace MobilizonConnector;
+
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
   exit;

source/view/settings/page.php

@@ -1,4 +1,6 @@
 <?php
+namespace MobilizonConnector;
+
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
   exit;

source/view/settings/url-field.php

@@ -1,4 +1,6 @@
 <?php
+namespace MobilizonConnector;
+
 // Exit if this file is called directly.
 if (!defined('ABSPATH')) {
   exit;

tests/DateTimeWrapperTest.php

@@ -0,0 +1,47 @@
+<?php
+declare(strict_types=1);
+
+use MobilizonConnector\DateTimeWrapper;
+use PHPUnit\Framework\TestCase;
+
+final class DateTimeWrapperTest extends TestCase {
+  public function testCanGet24TimeForUsualTime(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z');
+    $this->assertSame('16:45', $d->get24Time());
+  }
+
+  public function testCanGetShortDateForUsualDate(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z');
+    $this->assertSame('24/12/2020', $d->getShortDate());
+  }
+
+  public function testCanGetShortDateForUsualDateWithLocaleWithUnderscore(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z');
+    $this->assertSame('24/12/2020', $d->getShortDate(), 'en_GB');
+  }
+
+  public function testCanGetShortDateForUsualDateWithTimezoneString(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z', 'en-GB', 'Europe/Rome');
+    $this->assertSame('24/12/2020', $d->getShortDate());
+  }
+
+  public function testCanGetShortDateForUsualDateWithNamedOffset(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z', 'en-GB', 'UTC');
+    $this->assertSame('24/12/2020', $d->getShortDate());
+  }
+
+  public function testCanGetShortDateForUsualDateWithOffset(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z', 'en-GB', '+02:00');
+    $this->assertSame('24/12/2020', $d->getShortDate());
+  }
+
+  public function testCanGetShortDateForUsualDateWithEmptyTimezone(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z', 'en-GB', '');
+    $this->assertSame('24/12/2020', $d->getShortDate());
+  }
+
+  public function testCanGetShortOffsetNameForUsualTime(): void {
+    $d = new DateTimeWrapper('2020-12-24T16:45:00Z');
+    $this->assertSame('UTC', $d->getTimeZoneName());
+  }
+}

tests/FormatterTest.php

@@ -0,0 +1,52 @@
+<?php
+declare(strict_types=1);
+
+use MobilizonConnector\Formatter;
+use PHPUnit\Framework\TestCase;
+
+final class FormatterTest extends PHPUnit\Framework\TestCase
+{
+  public function testCanDateFormatOneDate(): void {
+    $this->assertSame('15/04/2021 10:30 - 15:30', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', '2021-04-15T15:30:00Z', false));
+  }
+
+  public function testCanDateFormatOneDateWithOffset(): void {
+    $this->assertSame('15/04/2021 10:30 - 15:30 (UTC)', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', '2021-04-15T15:30:00Z', true));
+  }
+
+  public function testCanDateFormatOneDateWithTimeZoneOffset(): void {
+    $this->assertSame('15/04/2021 11:30 - 16:30', Formatter::format_date('en-GB', '+01:00', '2021-04-15T10:30:00Z', '2021-04-15T15:30:00Z', false));
+  }
+
+  public function testCanDateFormatTwoDates(): void {
+    $this->assertSame('15/04/2021 10:30 - 16/04/2021 15:30', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', '2021-04-16T15:30:00Z', false));
+  }
+
+  public function testCanDateFormatTwoDatesWithOffset(): void {
+    $this->assertSame('15/04/2021 10:30 - 16/04/2021 15:30 (UTC)', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', '2021-04-16T15:30:00Z', true));
+  }
+
+  public function testCanDateFormatWhenSecondDateIsNull(): void {
+    $this->assertSame('15/04/2021 10:30', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', null, false));
+  }
+
+  public function testCanDateFormatWhenSecondDateIsNullWithOffset(): void {
+    $this->assertSame('15/04/2021 10:30 (UTC)', Formatter::format_date('en-GB', 'UTC', '2021-04-15T10:30:00Z', null, true));
+  }
+
+  public function testCanLocationFormatBothParameters(): void {
+    $this->assertSame('a, b', Formatter::format_location('a', 'b'));
+  }
+
+  public function testLocationFormatDescriptionOnly(): void {
+    $this->assertSame('a', Formatter::format_location('a', ''));
+  }
+
+  public function testLocationFormatDescriptionWithSpaceOnly(): void {
+    $this->assertSame('', Formatter::format_location(' ', ''));
+  }
+
+  public function testLocationFormatLocalityOnly(): void {
+    $this->assertSame('a', Formatter::format_location('', 'a'));
+  }
+}

webpack.config.cjs

@@ -6,10 +6,12 @@ const CopyPlugin = require('copy-webpack-plugin')
 const FOLDER_SOURCE = './source'
 
 module.exports = {
-  entry: FOLDER_SOURCE + '/front/events-loader.js',
+  entry: {
+    'block-events-loader': FOLDER_SOURCE + '/front/block-events-loader.js',
+  },
   output: {
-    filename: 'events-loader.js',
-    path: path.resolve(__dirname, 'build/' + '/front'),
+    filename: '[name].js',
+    path: path.resolve(__dirname, 'build/front'),
   },
   module: {
     rules: [