From 375ca114e2e1f664534be0c9295009ced63758de Mon Sep 17 00:00:00 2001
From: Shamim Rezaie <shamim@moodle.com>
Date: Wed, 12 Aug 2020 18:43:46 +1000
Subject: [PATCH] MDL-57682 media_videojs: webservice to get the language pack
 of videojs

---
 .../videojs/classes/external/get_language.php | 73 +++++++++++++++++++
 media/player/videojs/classes/plugin.php       | 13 ++++
 media/player/videojs/db/services.php          | 37 ++++++++++
 media/player/videojs/version.php              |  2 +-
 4 files changed, 124 insertions(+), 1 deletion(-)
 create mode 100644 media/player/videojs/classes/external/get_language.php
 create mode 100644 media/player/videojs/db/services.php

diff --git a/media/player/videojs/classes/external/get_language.php b/media/player/videojs/classes/external/get_language.php
new file mode 100644
index 00000000000..9e32bab314f
--- /dev/null
+++ b/media/player/videojs/classes/external/get_language.php
@@ -0,0 +1,73 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * External API to get language strings for the videojs.
+ *
+ * @package    media_videojs
+ * @copyright  2020 Shamim Rezaie <shamim@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace media_videojs\external;
+
+defined('MOODLE_INTERNAL') || die();
+
+require_once("$CFG->libdir/externallib.php");
+
+use external_api;
+use external_function_parameters;
+use external_value;
+
+/**
+ * The API to get language strings for the videojs.
+ *
+ * @copyright  2020 Shamim Rezaie <shamim@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class get_language extends external_api {
+    /**
+     * Returns description of parameters.
+     *
+     * @return external_function_parameters
+     */
+    public static function execute_parameters() {
+        return new external_function_parameters([
+            'lang' => new external_value(PARAM_ALPHAEXT, 'language')
+        ]);
+    }
+
+    /**
+     * Returns language strings in the JSON format
+     *
+     * @param string $lang The language code
+     * @return string
+     */
+    public static function execute(string $lang) {
+        external_api::validate_parameters(self::execute_parameters(), ['lang' => $lang]);
+
+        return \media_videojs_plugin::get_language_content($lang);
+    }
+
+    /**
+     * Returns description of method result value
+     *
+     * @return external_value
+     */
+    public static function execute_returns() {
+        return new external_value(PARAM_RAW, 'language pack json');
+    }
+}
diff --git a/media/player/videojs/classes/plugin.php b/media/player/videojs/classes/plugin.php
index 3b4233de230..bc11f2a4e26 100644
--- a/media/player/videojs/classes/plugin.php
+++ b/media/player/videojs/classes/plugin.php
@@ -369,6 +369,19 @@ class media_videojs_plugin extends core_media_player_native {
         return "";
     }
 
+    /**
+     * Returns the requested language pack in the json format.
+     *
+     * @param string $lang The language code
+     * @return false|string The read data or false on failure
+     */
+    public static function get_language_content(string $lang) {
+        global $CFG;
+        $langfile = "{$CFG->dirroot}/media/player/videojs/videojs/lang/{$lang}.json";
+
+        return file_exists($langfile) ? file_get_contents($langfile) : '';
+    }
+
     public function supports($usedextensions = []) {
         $supports = parent::supports($usedextensions);
         if (get_config('media_videojs', 'youtube')) {
diff --git a/media/player/videojs/db/services.php b/media/player/videojs/db/services.php
new file mode 100644
index 00000000000..8d25e8530ba
--- /dev/null
+++ b/media/player/videojs/db/services.php
@@ -0,0 +1,37 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * VideoJS player external functions and service definitions.
+ *
+ * @package    media_videojs
+ * @copyright  2020 Shamim Rezaie <shamim@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+$functions = [
+    'media_videojs_get_language' => [
+        'classname'     => 'media_videojs\external\get_language',
+        'methodname'    => 'execute',
+        'classpath'     => '',
+        'description'   => 'get language.',
+        'type'          => 'read',
+        'ajax'          => 'true',
+        'capabilities'  => '',
+    ]
+];
diff --git a/media/player/videojs/version.php b/media/player/videojs/version.php
index 2d6280c83e3..670a3e766f0 100644
--- a/media/player/videojs/version.php
+++ b/media/player/videojs/version.php
@@ -24,6 +24,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2021052500;         // The current plugin version (Date: YYYYMMDDXX)
+$plugin->version   = 2021052501;         // The current plugin version (Date: YYYYMMDDXX)
 $plugin->requires  = 2021052500;         // Requires this Moodle version
 $plugin->component = 'media_videojs'; // Full name of the plugin (used for diagnostics).