Implemented ticket closure, message clearing, and addition of welcome message

src/components/FloatingSupportChat/Chat.tsx

@@ -21,8 +21,15 @@ import {
   useTicketsFetcher,
 } from "@frontend/kitui";
 import {enqueueSnackbar} from "notistack";
-import type {TouchEvent, WheelEvent} from "react";
+import {
-import {useCallback, useEffect, useMemo, useRef, useState} from "react";
+  TouchEvent,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  WheelEvent
+} from "react";
 import ChatMessage from "../ChatMessage";
 import SendIcon from "../icons/SendIcon";
 import ArrowLeft from "@root/assets/Icons/arrowLeft";
@@ -36,6 +43,7 @@ import {
 } from "@utils/checkAcceptableMediaType";
 import {
   addOrUpdateUnauthMessages,
+  clearTickets,
   incrementUnauthMessage,
   setIsMessageSending,
   setTicketData,
@@ -49,11 +57,6 @@ import ChatDocument from "./ChatDocument";
 import ChatImage from "./ChatImage";
 import ChatVideo from "./ChatVideo";
 
-const workingHoursMessage =
-    "Здравствуйте, задайте ваш вопрос и наш оператор вам ответит в течение 10 минут";
-const offHoursMessage =
-    "Здравствуйте, к сожалению, сейчас операторы не работают. Задайте ваш вопрос, и вам ответят в 10:00 по московскому времени";
-
 type ModalWarningType =
   | "errorType"
   | "errorSize"
@@ -74,6 +77,7 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
   const isMobile = useMediaQuery(theme.breakpoints.down(800));
   const [messageField, setMessageField] = useState<string>("");
   const [disableFileButton, setDisableFileButton] = useState(false);
+  const [sseEnabled, setSseEnabled] = useState(true);
   const [modalWarningType, setModalWarningType] =
     useState<ModalWarningType>(null);
   const chatBoxRef = useRef<HTMLDivElement>(null);
@@ -92,12 +96,39 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
     unauthTicketMessageFetchState: fetchState,
     apiPage: messageApiPage,
   } = ticket;
-
   const { isActiveSSETab, updateSSEValue } = useSSETab<TicketMessage[]>(
     "ticket",
     addOrUpdateUnauthMessages
   );
 
+  const getGreetingMessage: TicketMessage = useMemo(() => {
+    const workingHoursMessage =
+        "Здравствуйте, задайте ваш вопрос и наш оператор вам ответит в течение 10 минут";
+    const offHoursMessage =
+        "Здравствуйте, к сожалению, сейчас операторы не работают. Задайте ваш вопрос, и вам ответят в 10:00 по московскому времени";
+    const date = new Date();
+    const currentHourUTC = date.getUTCHours();
+    const MscTime = 3; // Москва UTC+3;
+    const moscowHour = (currentHourUTC + MscTime) % 24;
+    const greetingMessage =
+        moscowHour >= 10 && moscowHour < 15
+            ? workingHoursMessage
+            : offHoursMessage;
+
+    return ( {
+      created_at: new Date().toISOString(),
+      files: [],
+      id: "111",
+      message: greetingMessage,
+      request_screenshot: "",
+      session_id: "greetingMessage",
+      shown: { me: 1 },
+      ticket_id: "111",
+      user_id: "greetingMessage",
+    });
+
+  }, [open]);
+
   useTicketMessages({
     url: process.env.REACT_APP_DOMAIN + "/heruvym/getMessages",
     isUnauth: true,
@@ -117,19 +148,29 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
     }, []),
     onFetchStateChange: setUnauthTicketMessageFetchState,
   });
-
   useSSESubscription<TicketMessage>({
-    enabled: isActiveSSETab && Boolean(sessionData),
+    enabled: sseEnabled && isActiveSSETab && Boolean(sessionData),
     url:
       process.env.REACT_APP_DOMAIN +
       `/heruvym/ticket?ticket=${sessionData?.ticketId}&s=${sessionData?.sessionId}`,
     onNewData: (ticketMessages) => {
+      const isTicketClosed = ticketMessages.some(
+          (message) => message.session_id === "close"
+      );
+      if(isTicketClosed){
+        clearTickets();
+        addOrUpdateUnauthMessages([getGreetingMessage]);
+        if (!user) {
+            localStorage.removeItem("unauth-ticket");
+        }
+        return;
+      }
       updateSSEValue(ticketMessages);
-
       addOrUpdateUnauthMessages(ticketMessages);
     },
     onDisconnect: useCallback(() => {
       setUnauthIsPreventAutoscroll(false);
+      setSseEnabled(false);
     }, []),
     marker: "ticket",
   });
@@ -141,7 +182,7 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
     onSuccess: (result) => {
       if (result.data?.length) {
         const currentTicket = result.data.find(
-          ({ origin }) => !origin.includes("/support")
+            ({ origin, state }) => !origin.includes("/support") && state !== "close"
         );
 
         if (!currentTicket) {
@@ -183,34 +224,11 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
   );
 
   useEffect(() => {
-    const date = new Date();
+    addOrUpdateUnauthMessages([getGreetingMessage]);
-    const currentHourUTC = date.getUTCHours();
-    const MscTime = 3; // Москва UTC+3;
-    const moscowHour = (currentHourUTC + MscTime) % 24;
-    const greetingMessage =
-        moscowHour >= 10 && moscowHour < 15
-            ? workingHoursMessage
-            : offHoursMessage;
-
-    const greetingMessageObj = {
-      created_at: new Date().toISOString(),
-      files: [],
-      id: "111ck2tepkvc9g6irk3fugg",
-      message: greetingMessage,
-      request_screenshot: "",
-      session_id: "111",
-      shown: { me: 1 },
-      ticket_id: "111",
-      user_id: "111",
-    };
-
-    addOrUpdateUnauthMessages([greetingMessageObj]);
-
-    if (open) {
       scrollToBottom();
-    }
   }, [open]);
 
+
   useEffect(
     function scrollOnNewMessage() {
       if (!chatBoxRef.current) return;
@@ -260,6 +278,7 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
             ticketId: response.Ticket,
             sessionId: response.sess,
           });
+          setSseEnabled(true);
         })
         .catch((error) => {
           const errorMessage = getMessageFromFetchError(error);
@@ -527,6 +546,9 @@ export default function Chat({ open = false, onclickArrow, sx }: Props) {
                     />
                   );
                 })}
+              {!ticket.sessionData?.ticketId && (
+              <ChatMessage unAuthenticated text={getGreetingMessage.message} createdAt={getGreetingMessage.created_at} isSelf={false}  />)
+              }
             </Box>
             <FormControl fullWidth sx={{ borderTop: "1px solid black" }}>
               <InputBase