From c93033471c67434a884f8aae1826560b95273a3c Mon Sep 17 00:00:00 2001
From: Angel Fernando Quiroz Campos <angelfqc.18@gmail.com>
Date: Fri, 3 Mar 2023 18:55:40 -0500
Subject: [PATCH] Plugin: Text2Speech: Allow generate audio for LP items - refs
 #4622

---
 main/lp/lp_add_audio.php                      | 100 ++++++++++++++++++
 plugin/text2speech/convert.php                |  71 +++++++++++++
 .../text2speech/src/mozillatts/MozillaTTS.php |   4 +-
 3 files changed, 173 insertions(+), 2 deletions(-)
 create mode 100644 plugin/text2speech/convert.php

diff --git a/main/lp/lp_add_audio.php b/main/lp/lp_add_audio.php
index 08228600d76..b245ed01939 100755
--- a/main/lp/lp_add_audio.php
+++ b/main/lp/lp_add_audio.php
@@ -243,6 +243,106 @@
 $page .= '<ul class="lp_resource">'.$documentTree.'</ul>';
 $page .= '</li>';
 $page .= '</ul>';
+
+if (Text2SpeechPlugin::create()->isEnabled(true)) {
+    $page .= '<div class="clearfix"></div>
+        <h3 class="page-header">
+            <small>'.get_lang('Or').'</small>
+            '.get_lang('Text to Speech').'
+        </h3>
+        <div class="row">
+            <div class="col-sm-8 col-sm-offset-2">
+                <p>
+                    <button id="btn-tts" class="btn btn-default" type="button">
+                        <span id="btn-tts__spinner" class="fa fa-spinner fa-spin" aria-hidden="true" style="display: none;"></span>
+                        '.get_lang('GenerateAudioFromContent').'
+                    </button>
+                </p>
+                <p id="tts-player" id="tts-player" style="display: none;">
+                    <audio controls class="skip"></audio>
+                </p>
+                <p id="tts-warning" class="alert alert-warning" style="display: none;">
+                    '.get_lang('ErrorOccurred').'
+                </p>
+                <p>
+                    <button id="btn-save-tts" class="btn btn-primary" type="button" disabled>
+                        <span id="btn-save-tts__spinner" class="fa fa-spinner fa-spin" aria-hidden="true" style="display: none;"></span>
+                        '.get_lang('SaveRecordedAudio').'
+                    </button>
+                </p>
+            </div>
+        </div>
+        <script>
+            $(function () {
+                var btnTts = $(\'#btn-tts\');
+                var btnTssSpiner = $(\'#btn-tts__spinner\');
+                var ttsPlayer = $(\'#tts-player\');
+                var ttsPlayerAudio = $(\'#tts-player audio\');
+                var ttsWarning =  $(\'#tts-warning\');
+                
+                var btnSaveTts = $(\'#btn-save-tts\');
+                var btnSaveTtsSpiner = $(\'#btn-save-tts__spinner\');
+                
+                btnTts.on(\'click\', function (e) {
+                    e.preventDefault();
+                
+                    ttsWarning.hide();
+                    btnTts.prop(\'disabled\', true);
+                    btnTssSpiner.show();
+                
+                    $
+                        .ajax(_p.web_plugin + \'text2speech/convert.php?item_id='.$lp_item_id.'\')
+                        .done(function (response) {
+                            ttsPlayer.show();
+                            ttsPlayerAudio.prop(\'src\', response).mediaelementplayer();
+                            btnSaveTts.prop(\'disabled\', false);
+                        })
+                        .fail(function () {
+                            ttsPlayer.hide();
+                            ttsWarning.show();
+                            btnSaveTts.prop(\'disabled\', true);
+                        })
+                        .always(function () {
+                            btnTssSpiner.hide();
+                            btnTts.prop(\'disabled\', false);
+                        });
+                });
+    
+                btnSaveTts.on(\'click\', function () {
+                    btnSaveTts.prop(\'disabled\', true);
+                    btnSaveTtsSpiner.show();
+                    
+                    var xhr = new XMLHttpRequest();
+                    xhr.open(\'GET\', ttsPlayerAudio.prop(\'src\'));
+                    xhr.responseType = \'blob\';
+                    xhr.onload = function (recordedBlob) {
+                        console.log(recordedBlob);
+                        var formData = new FormData();
+                        formData.append(\'file\', recordedBlob.target.response, \'audio-'.$lp_item_id.'\.wav\');
+                        formData.append(\'id\', '.$lp_item_id.');
+    
+                        $.ajax({
+                            url: $(\'#add_audio\').prop(\'action\'),
+                            data: formData,
+                            processData: false,
+                            contentType: false,
+                            type: \'POST\',
+                            success: function (fileURL) {
+                                if (!fileURL) {
+                                    return;
+                                }
+                            
+                                window.location.reload();
+                            }
+                        });
+                    };
+                    xhr.send();
+                });
+            });
+        </script>
+    ';
+}
+
 $page .= '</div>';
 $page .= '</div>';
 
diff --git a/plugin/text2speech/convert.php b/plugin/text2speech/convert.php
new file mode 100644
index 00000000000..e8625a7aa4f
--- /dev/null
+++ b/plugin/text2speech/convert.php
@@ -0,0 +1,71 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+use Chamilo\CourseBundle\Entity\CDocument;
+use Chamilo\CourseBundle\Entity\CLpItem;
+use Symfony\Component\HttpFoundation\Request as HttpRequest;
+use Symfony\Component\HttpFoundation\Response as HttpResponse;
+
+require_once __DIR__.'/../../main/inc/global.inc.php';
+
+$httpRequest = HttpRequest::createFromGlobals();
+$httpResponse = HttpResponse::create();
+
+$plugin = Text2SpeechPlugin::create();
+
+$isAllowedToEdit = api_is_allowed_to_edit(false, true);
+
+$em = Database::getManager();
+
+try {
+    if (!$plugin->isEnabled(true)
+        || !$isAllowedToEdit
+    ) {
+        throw new Exception();
+    }
+
+    $textToConvert = '';
+
+    if ($httpRequest->query->has('text')) {
+        $textToConvert = $httpRequest->query->get('text');
+    } elseif ($httpRequest->query->has('item_id')) {
+        $itemId = $httpRequest->query->getInt('item_id');
+
+        $item = $em->find(CLpItem::class, $itemId);
+
+        if (!$item) {
+            throw new Exception();
+        }
+
+        $course = api_get_course_entity($item->getCId());
+        $documentRepo = $em->getRepository(CDocument::class);
+
+        $document = $documentRepo->findOneBy([
+            'cId' => $course->getId(),
+            'iid' => $item->getPath()
+        ]);
+
+        if (!$document) {
+            throw new Exception();
+        }
+
+        $textToConvert = file_get_contents(
+            api_get_path(SYS_COURSE_PATH).$course->getDirectory().'/document/'.$document->getPath()
+        );
+        $textToConvert = strip_tags($textToConvert);
+    }
+
+    if (empty($textToConvert)) {
+        throw new Exception();
+    }
+
+    $path = $plugin->convert($textToConvert);
+
+    $httpResponse->setContent($path);
+} catch (Exception $exception) {
+    $httpResponse->setStatusCode(HttpResponse::HTTP_BAD_REQUEST);
+}
+
+$httpResponse->send();
+
diff --git a/plugin/text2speech/src/mozillatts/MozillaTTS.php b/plugin/text2speech/src/mozillatts/MozillaTTS.php
index 41d33e2efff..c15c26041cc 100644
--- a/plugin/text2speech/src/mozillatts/MozillaTTS.php
+++ b/plugin/text2speech/src/mozillatts/MozillaTTS.php
@@ -24,7 +24,7 @@ private function request(string $data): string
     {
         $filename = uniqid().'.wav';
         $filePath = $this->filePath.$filename;
-        $resource = fopen($filePath, 'w');
+//        $resource = fopen(realpath($filePath), 'w');
 
         $client = new GuzzleHttp\Client();
         $client->get($this->url.'?api_key='.urlencode($this->apiKey).
@@ -33,7 +33,7 @@ private function request(string $data): string
                 'Cache-Control' => 'no-cache',
                 'Content-Type' => 'audio/wav',
             ],
-            'sink' => $resource,
+            'sink' => $filePath,
         ]);
 
         return $filename;