diff --git a/gestion/appinfo/routes.php b/gestion/appinfo/routes.php
index 207c28c..bcddacb 100644
--- a/gestion/appinfo/routes.php
+++ b/gestion/appinfo/routes.php
@@ -142,5 +142,8 @@ return [
 
        //user groups getUserConnectedGroups
        ['name' => 'page#getUserConnectedGroups',         'url' => '/getUserConnectedGroups', 'verb' => 'GET'],
+
+       //testTalk
+       ['name' => 'page#testTalk',         'url' => '/testTalk', 'verb' => 'POST'],
     ]
 ];
diff --git a/gestion/lib/Constants/BddConstant.php b/gestion/lib/Constants/BddConstant.php
index 46b39fd..78e4adf 100644
--- a/gestion/lib/Constants/BddConstant.php
+++ b/gestion/lib/Constants/BddConstant.php
@@ -5,6 +5,7 @@ namespace OCA\Gestion\Constants;
 abstract class BddConstant 
 {
     const DEFAULT_CALENDAR_UUID_FOR_DEVIS = "not-related";
-    const CALENDAR_TABLE_PREFIX = "*PREFIX*";
+    const DEFAULT_TABLE_PREFIX = "*PREFIX*";
     const DEFAULT_CLIENT_GROUP_NAME = "Nom du groupe";
+    const DEFAULT_ADMIN_ID_NEXTCLOUD = 'admin';
 }
\ No newline at end of file
diff --git a/gestion/lib/Controller/PageController.php b/gestion/lib/Controller/PageController.php
index 964f737..c34eab9 100644
--- a/gestion/lib/Controller/PageController.php
+++ b/gestion/lib/Controller/PageController.php
@@ -24,6 +24,7 @@ use OCA\Gestion\Service\Certificate\CertificateService;
 use OCA\Gestion\Service\ExportClientStatisticService;
 use OCA\Gestion\Service\ExportThanatoStatisticService;
 use OCA\Gestion\Service\InvoicePdfService;
+use OCA\Gestion\Service\TalkService;
 use Ramsey\Uuid\Uuid;
 
 date_default_timezone_set('Europe/Paris');
@@ -64,6 +65,9 @@ class PageController extends Controller {
 
 	private $adminStorage;
 
+	/** @var TalkService */
+	private $talkService;
+
 	/**
 	 * Constructor
 	 */
@@ -80,7 +84,8 @@ class PageController extends Controller {
 								ExportThanatoStatisticService $exportThanatoStatisticService,
 								ExportClientStatisticService $exportClientStatisticService,
 								InvoicePdfService $invoicePdfService,
-								CertificateService  $certificateService) {
+								CertificateService  $certificateService,
+								TalkService $talkService) {
 
 		parent::__construct($AppName, $request);
 
@@ -94,6 +99,7 @@ class PageController extends Controller {
 		$this->invoicePdfService = $invoicePdfService;
 		$this->certificateService = $certificateService;
 		$this->defaultImagePath = $this->sharedImagePath.self::DEFAULT_NEXTCLOUD_ADMIN.'/files/.gestion/';
+		$this->talkService = $talkService;
 		//$this->fpdf = $fpdf;
 
         if ($userSession->isLoggedIn()) {
@@ -2938,10 +2944,26 @@ class PageController extends Controller {
 	 * @param int $defuntId
 	 */
 
-	 public function getUserConnectedGroups(){
+	public function getUserConnectedGroups(){
 		try{
 			return json_encode($this->groups);
 		}
 		catch(\OCP\Files\NotFoundException $e) { }
 	}
+
+
+	/**
+	 * @NoAdminRequired
+	 * @NoCSRFRequired
+	 */
+
+	public function testTalk(){
+		try{
+			$message = $this->myDb->getDevisTalkRoomMessage(1,$this->idNextcloud);
+			// $message ="FROM API";
+			$this->talkService->sendDevisTalkNotifications($message,$this->idNextcloud);
+			return true;
+		}
+		catch(\OCP\Files\NotFoundException $e) { }
+	}
 }
diff --git a/gestion/lib/Db/Bdd.php b/gestion/lib/Db/Bdd.php
index 0858e46..7311979 100644
--- a/gestion/lib/Db/Bdd.php
+++ b/gestion/lib/Db/Bdd.php
@@ -2888,6 +2888,40 @@ class Bdd {
         }
         return null;
     }
+
+    private function getDevisByIdWithCalendarData($devisId,$idNextcloud){
+        $devis = $this->getOneDevis($devisId,$idNextcloud);
+        $devis= json_decode($devis);
+        if(empty($devis)){
+            return null;
+        }
+        $devis = $devis[0];
+        if(isset($devis->numm) && $devis->num == null){
+            return null;
+        }
+        $calendarData = $this->getCalendarDataByCalendarObjectUuid($devis->num);
+        $devisTimeValue = VCalendarHelpers::GetStartAndEndTimeFromVCalendarString($calendarData);
+        $devis->startTime = $devisTimeValue["startTime"];
+        $devis->endTime = $devisTimeValue["endTime"];
+        return $devis;
+    }
+    
+
+    public function getDevisTalkRoomMessage($devisId,$idNextcloud){
+        $devis = $this->getDevisByIdWithCalendarData($devisId,$idNextcloud);
+        if($devis == null){
+            return null;
+        }
+        $devisDate = new Datetime($devis->date);
+        $devisDate = $devisDate->format('d/m/Y');
+
+        $message = "NOUVEAUX SOINS : ";
+        $message .= $devis->nom_defunt . ' ';
+        $message .= 'le '.$devisDate. ' ';
+        $message .= 'à '.$devis->startTime. ' ';
+        $message .= 'à '.$devis->lieu. ' '. $devis->adresse_soin;
+        return $message;
+    }
     
 
 }
\ No newline at end of file
diff --git a/gestion/lib/Db/TalkDb.php b/gestion/lib/Db/TalkDb.php
new file mode 100644
index 0000000..27f33a3
--- /dev/null
+++ b/gestion/lib/Db/TalkDb.php
@@ -0,0 +1,230 @@
+<?php
+namespace OCA\Gestion\Db;
+
+use OCP\IDBConnection;
+use \Datetime;
+use OCA\Gestion\Constants\BddConstant;
+use Ramsey\Uuid\Uuid;
+
+class TalkDb {
+    private $talkTablePrefix;
+
+    private const DEVIS_TALK_ROOM_TYPE = 1;
+    private const DEVIS_TALK_ROOM_ACTOR_TYPE = "users";
+    private const DEVIS_TALK_ROOM_VERB_COMMENT = "comment";
+    private const DEVIS_TALK_ROOM_VERB_INITIAL_MESSAGE = "system";
+    private const DEVIS_TALK_ROOM_INITIAL_MESSAGE = '{"message":"conversation_created","parameters":[]}';
+    private const DEVIS_TALK_ROOM_DEFAULT_MESSAGE_TYPE = "chat";
+    private const DEVIS_TALK_ROOM_DEFAULT_PARTICIPANT_TYPE = 1;
+    private $commentsTablePrefix;
+    private IDbConnection $pdo;
+
+    public function __construct(IDbConnection $db) {
+        $this->talkTablePrefix = BddConstant::DEFAULT_TABLE_PREFIX ."talk_";
+        $this->commentsTablePrefix = BddConstant::DEFAULT_TABLE_PREFIX;
+        $this->pdo = $db;
+    }
+
+    private function execSQL($sql, $conditions){
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->execute($conditions);
+        $data = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        return json_encode($data);
+    }
+
+    private function execSQLNoData($sql, $conditions){
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->execute($conditions);
+        $stmt->closeCursor();
+    }
+
+    private function execSQLNoJsonReturn($sql, $conditions){
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->execute($conditions);
+        $data = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        return $data;
+    }
+
+    private function getDevisTalkRoomByName($name){
+        $sql = "SELECT *
+            FROM ".$this->talkTablePrefix."rooms as room
+            WHERE room.name = ? ORDER BY room.id DESC LIMIT 1;";
+
+        $rooms = $this->execSQLNoJsonReturn(
+            $sql, 
+            [$name]);
+
+        if(!empty($rooms)){
+            return $rooms[0];
+        }
+        return null;
+    }
+
+    private function createDevisTalkRoom($name,$token){
+        $dateTime = new Datetime();
+        $dateTime = $dateTime->format(('Y-m-d H:i:s'));
+        $sql = "INSERT INTO `".$this->talkTablePrefix."rooms` (
+        `name`,
+        `token`,
+        `type`,
+        `last_activity`) VALUES (?,?,?,?);";
+        $this->execSQLNoData($sql, array(
+            $name,
+            $token,
+            self::DEVIS_TALK_ROOM_TYPE,
+            $dateTime
+        ));
+        return true;
+    }
+
+    private function createDevisTalkRoomAttendeesByActors($actors,$roomId){
+        foreach($actors as $actor){
+            $this->createDevisTalkRoomAttendees($actor,$roomId);
+        }
+    }
+
+    private function createDevisTalkRoomAttendees($idNextCloud,$roomId){
+        $sql = "INSERT INTO `".$this->talkTablePrefix."attendees` (
+            `room_id`,
+            `actor_type`,
+            `actor_id`,
+            `display_name`,
+            `participant_type`) VALUES (?,?,?,?,?);";
+        $this->execSQLNoData($sql, array(
+                $roomId,
+                self::DEVIS_TALK_ROOM_ACTOR_TYPE,
+                $idNextCloud,
+                $idNextCloud,
+                self::DEVIS_TALK_ROOM_DEFAULT_PARTICIPANT_TYPE
+            ));
+    }
+
+    private function createDevisTalkRoomMessage($actorId,$message,$verb,$roomId,$reference = null){
+        $datetime = new DateTime();
+        $datetime = $datetime->format(('Y-m-d H:i:s'));
+        $sql = "INSERT INTO `".$this->commentsTablePrefix."comments` (
+            `actor_type`,
+            `actor_id`,
+            `message`,
+            `verb`,
+            `creation_timestamp`,
+            `object_type`,
+            `object_id`,
+            `reference_id`
+            ) VALUES (?,?,?,?,?,?,?,?);";
+        $this->execSQLNoData($sql, array(
+                self::DEVIS_TALK_ROOM_ACTOR_TYPE,         
+                $actorId,
+                $message,
+                $verb,
+                $datetime,
+                self::DEVIS_TALK_ROOM_DEFAULT_MESSAGE_TYPE,
+                $roomId,
+                $reference
+            ));
+    }
+
+    private function getDevisTalkRoomMessageByRoomAndMessage($roomId,$message){
+        $sql = "SELECT *
+            FROM ".$this->commentsTablePrefix."comments as comment
+            WHERE comment.object_id = ? AND 
+            comment.message = ? 
+            ORDER BY comment.id DESC 
+            LIMIT 1;";
+
+        $messages = $this->execSQLNoJsonReturn(
+            $sql, 
+            [$roomId,$message]);
+
+        if(!empty($messages)){
+            return $messages[0];
+        }
+        return null;
+    }
+
+    public function getDevisTalkRoomByNames($names){
+        $sql = "SELECT *
+            FROM ".$this->talkTablePrefix."rooms as room
+            WHERE room.name = ? OR room.name = ? LIMIT 1;";
+
+        $rooms = $this->execSQLNoJsonReturn(
+            $sql, 
+            [$names['createdByUser'],$names['createdByAdmin']]);
+
+        if(!empty($rooms)){
+            return $rooms[0];
+        }
+        return null;
+    }
+
+    public function createDevisTalkRoomAndReturnDevisTalkRoom($idNextCloud,$token){
+        $roomName = '["'.$idNextCloud.'","'.BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD.'"]';
+        $this->createDevisTalkRoom($roomName,$token);
+        $room = $this->getDevisTalkRoomByName($roomName);
+        $attendees = [
+            $idNextCloud,
+            BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD
+        ];
+        $this->createDevisTalkRoomAttendeesByActors($attendees,$room['id']);
+        return $room;
+    }
+    public function setDevisTalkRoomInitialMessageAndReturnMessage($roomId,$idNextCloud){
+        $this->createDevisTalkRoomMessage(
+            $idNextCloud,
+            self::DEVIS_TALK_ROOM_INITIAL_MESSAGE,
+            self::DEVIS_TALK_ROOM_VERB_INITIAL_MESSAGE,
+            $roomId
+        );
+
+        $message = $this->getDevisTalkRoomMessageByRoomAndMessage($roomId,self::DEVIS_TALK_ROOM_INITIAL_MESSAGE);
+        return $message;
+    }
+
+    public function setAttendeeLastReadMessage($roomId,$messageId,$idNextCloud){
+        $sql = "UPDATE ".$this->talkTablePrefix."attendees as attendee
+            SET 
+            attendee.last_read_message = ? 
+            WHERE attendee.room_id = ? AND 
+            attendee.actor_id = ?;";
+        $this->execSQLNoData(
+                    $sql, 
+                    [$messageId,$roomId,$idNextCloud]); 
+    }
+
+    public function createDevisTalkRoomMessageAndReturnMessage($roomId,$message){
+        $this->createDevisTalkRoomMessage(
+            BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD,
+            $message,
+            self::DEVIS_TALK_ROOM_VERB_COMMENT,
+            $roomId,
+            Uuid::uuid4()->toString()
+        );
+        $message = $this->getDevisTalkRoomMessageByRoomAndMessage($roomId,$message);
+        return $message;
+    }
+
+    public function updateDevisTalkRoomLastActivity($roomId,$datetime){
+        $datetime = $datetime->format(('Y-m-d H:i:s'));
+        $sql = "UPDATE ".$this->talkTablePrefix."rooms as room
+            SET 
+            room.last_activity = ? 
+            WHERE room.id = ?;";
+        $this->execSQLNoData(
+                    $sql, 
+                    [$datetime,$roomId]); 
+    }
+
+    public function updateRoomLastMessage($roomId,$lastMessageId){
+        $sql = "UPDATE ".$this->talkTablePrefix."rooms as room
+            SET 
+            room.last_message = ? 
+            WHERE room.id = ?;";
+        $this->execSQLNoData(
+                $sql, 
+                [$lastMessageId,$roomId]); 
+    }
+
+
+}
\ No newline at end of file
diff --git a/gestion/lib/Service/GestionService.php b/gestion/lib/Service/GestionService.php
index f6a99ac..36849bf 100644
--- a/gestion/lib/Service/GestionService.php
+++ b/gestion/lib/Service/GestionService.php
@@ -37,11 +37,16 @@ class GestionService {
 	/** @var LoggerInterface */
 	private $logger;
 
+    /** @var TalkService */
+	private $talkService;
+
 	public function __construct(
 		Bdd $gestionBdd,
-		LoggerInterface $logger) {
+		LoggerInterface $logger,
+        TalkService $talkService) {
 		$this->logger = $logger;
 		$this->gestionBdd = $gestionBdd;
+        $this->talkService = $talkService;
 	}
 
 	private function GetCalendarSummaryFromVCalendarString(string $vCalendarString): string
@@ -134,6 +139,8 @@ class GestionService {
             $this->gestionBdd->insertDevisArticleFromDevisIdAndArticlesIdArray($devisId, $articleIds);
         }
         $this->gestionBdd->createDevisTrajetFromVCalendar($devisId,$userName);
+        $devisTalkMessage = $this->gestionBdd->getDevisTalkRoomMessage($devisId,$userName);
+        $this->talkService->sendDevisTalkNotifications($devisTalkMessage,$userName);
     }
 
     private function GetThanatoNameFromVCalendarString($vCalendarString){
diff --git a/gestion/lib/Service/TalkService.php b/gestion/lib/Service/TalkService.php
new file mode 100644
index 0000000..bd219f2
--- /dev/null
+++ b/gestion/lib/Service/TalkService.php
@@ -0,0 +1,87 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * Calendar App
+ *
+ * @copyright 2021 Anna Larch <anna.larch@gmx.net>
+ *
+ * @author Anna Larch <anna.larch@gmx.net>
+ * @author Richard Steinmetz <richard@steinmetz.cloud>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Gestion\Service;
+
+use DateTime;
+use OCA\Gestion\Constants\BddConstant;
+use OCA\Gestion\Db\Bdd;
+use OCA\Gestion\Db\TalkDb;
+use Psr\Log\LoggerInterface;
+use Ramsey\Uuid\Uuid;
+
+class TalkService {
+
+    /** @var TalkDb */
+	private $talkDb;
+
+	/** @var LoggerInterface */
+	private $logger;
+
+	public function __construct(
+        TalkDb $talkDb,
+		LoggerInterface $logger) {
+		$this->logger = $logger;
+        $this->talkDb = $talkDb;
+	}
+
+    private function getUserDevisTalkRoomNames($idNextCloud){
+        $roomNamesCreatedByUser = '["'.$idNextCloud.'","'.BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD.'"]';
+        $roomNamesCreatedByAdmin = '["'.BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD.'","'.$idNextCloud.'"]';
+        return [
+            "createdByUser" => $roomNamesCreatedByUser,
+            "createdByAdmin" => $roomNamesCreatedByAdmin
+        ];
+    }
+
+    private function generateTalkRandomToken(){
+        $length = 8;
+        $characters = 'abcdefghijklmnopqrstuvwxyz0123456789';
+        $charactersLength = strlen($characters);
+        $randomToken = '';
+        for ($i = 0; $i < $length; $i++) {
+            $randomToken .= $characters[rand(0, $charactersLength - 1)];
+        }
+        return $randomToken;
+    }
+
+    public function sendDevisTalkNotifications(string $message,string $idNextcloud){
+        if($idNextcloud === BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD){
+            return true;
+        }
+        $roomNames = $this->getUserDevisTalkRoomNames($idNextcloud);
+        $room = $this->talkDb->getDevisTalkRoomByNames($roomNames);
+        if($room == null){
+            $room = $this->talkDb->createDevisTalkRoomAndReturnDevisTalkRoom($idNextcloud,$this->generateTalkRandomToken());
+            $initialMessage = $this->talkDb->setDevisTalkRoomInitialMessageAndReturnMessage($room['id'],$idNextcloud);
+        }
+        $devisMessage = $this->talkDb->createDevisTalkRoomMessageAndReturnMessage($room['id'],$message);
+        $this->talkDb->updateRoomLastMessage($room['id'],$devisMessage['id']);
+        $this->talkDb->setAttendeeLastReadMessage($room['id'],$devisMessage['id'],BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD);
+        return true;
+    }
+
+}