IO-3000 Adjusted first approach at messaging WS changes.

client/src/components/chat-messages-list/chat-message-list.component.jsx

@@ -2,105 +2,90 @@ import Icon from "@ant-design/icons";
 import { Tooltip } from "antd";
 import i18n from "i18next";
 import dayjs from "../../utils/day";
-import React, { useEffect, useRef } from "react";
+import React, { useRef, useEffect } from "react";
 import { MdDone, MdDoneAll } from "react-icons/md";
-import { AutoSizer, CellMeasurer, CellMeasurerCache, List } from "react-virtualized";
+import { Virtuoso } from "react-virtuoso";
 import { DateTimeFormatter } from "../../utils/DateFormatter";
 import "./chat-message-list.styles.scss";
 
 export default function ChatMessageListComponent({ messages }) {
-  const virtualizedListRef = useRef(null);
+  const virtuosoRef = useRef(null);
 
-  const _cache = new CellMeasurerCache({
-    fixedWidth: true,
-    // minHeight: 50,
-    defaultHeight: 100
-  });
+  // Scroll to the bottom after a short delay when the component mounts
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      if (virtuosoRef.current) {
+        virtuosoRef.current.scrollToIndex({
+          index: messages.length - 1,
+          behavior: "auto" // Instantly scroll to the bottom
+        });
+      }
+    }, 100); // Delay of 100ms to allow rendering
+    return () => clearTimeout(timer); // Cleanup the timer on unmount
+  }, [messages.length]); // Run only once on component mount
 
-  const scrollToBottom = (renderedrows) => {
-    //console.log("Scrolling to", messages.length);
-    // !!virtualizedListRef.current &&
-    //   virtualizedListRef.current.scrollToRow(messages.length);
-    // Outstanding isue on virtualization: https://github.com/bvaughn/react-virtualized/issues/1179
-    //Scrolling does not work on this version of React.
-  };
-
-  useEffect(scrollToBottom, [messages]);
-
-  const _rowRenderer = ({ index, key, parent, style }) => {
+  // Scroll to the bottom after the new messages are rendered
+  useEffect(() => {
+    if (virtuosoRef.current) {
+      // Allow the DOM and Virtuoso to fully render the new data
+      setTimeout(() => {
+        virtuosoRef.current.scrollToIndex({
+          index: messages.length - 1,
+          align: "end", // Ensure the last message is fully visible
+          behavior: "smooth" // Smooth scrolling
+        });
+      }, 50); // Slight delay to ensure layout recalculates
+    }
+  }, [messages]); // Triggered when new messages are added
+  //TODO: Does this one need to come into the render of the method?
+  const renderMessage = (index) => {
+    const message = messages[index];
     return (
-      <CellMeasurer cache={_cache} key={key} rowIndex={index} parent={parent}>
-        {({ measure, registerChild }) => (
-          <div
-            ref={registerChild}
-            onLoad={measure}
-            style={style}
-            className={`${messages[index].isoutbound ? "mine messages" : "yours messages"}`}
-          >
-            <div className="message msgmargin">
-              {MessageRender(messages[index])}
-              {StatusRender(messages[index].status)}
+      <div key={index} className={`${message.isoutbound ? "mine messages" : "yours messages"}`}>
+        <div className="message msgmargin">
+          <Tooltip title={DateTimeFormatter({ children: message.created_at })}>
+            <div>
+              {message.image_path &&
+                message.image_path.map((i, idx) => (
+                  <div key={idx} style={{ display: "flex", justifyContent: "center" }}>
+                    <a href={i} target="__blank" rel="noopener noreferrer">
+                      <img alt="Received" className="message-img" src={i} />
+                    </a>
+                  </div>
+                ))}
+              <div>{message.text}</div>
             </div>
-            {messages[index].isoutbound && (
-              <div style={{ fontSize: 10 }}>
-                {i18n.t("messaging.labels.sentby", {
-                  by: messages[index].userid,
-                  time: dayjs(messages[index].created_at).format("MM/DD/YYYY @ hh:mm a")
-                })}
-              </div>
-            )}
+          </Tooltip>
+          {message.status && (
+            <div className="message-status">
+              <Icon
+                component={message.status === "sent" ? MdDone : message.status === "delivered" ? MdDoneAll : null}
+                className="message-icon"
+              />
+            </div>
+          )}
+        </div>
+        {message.isoutbound && (
+          <div style={{ fontSize: 10 }}>
+            {i18n.t("messaging.labels.sentby", {
+              by: message.userid,
+              time: dayjs(message.created_at).format("MM/DD/YYYY @ hh:mm a")
+            })}
           </div>
         )}
-      </CellMeasurer>
+      </div>
     );
   };
 
   return (
     <div className="chat">
-      <AutoSizer>
-        {({ height, width }) => (
-          <List
-            ref={virtualizedListRef}
-            width={width}
-            height={height}
-            rowHeight={_cache.rowHeight}
-            rowRenderer={_rowRenderer}
-            rowCount={messages.length}
-            overscanRowCount={10}
-            estimatedRowSize={150}
-            scrollToIndex={messages.length}
-          />
-        )}
-      </AutoSizer>
+      <Virtuoso
+        ref={virtuosoRef}
+        data={messages}
+        itemContent={(index) => renderMessage(index)}
+        followOutput="smooth" // Ensure smooth scrolling when new data is appended
+        style={{ height: "100%", width: "100%" }}
+      />
     </div>
   );
 }
-
-const MessageRender = (message) => {
-  return (
-    <Tooltip title={DateTimeFormatter({ children: message.created_at })}>
-      <div>
-        {message.image_path &&
-          message.image_path.map((i, idx) => (
-            <div key={idx} style={{ display: "flex", justifyContent: "center" }}>
-              <a href={i} target="__blank">
-                <img alt="Received" className="message-img" src={i} />
-              </a>
-            </div>
-          ))}
-        <div>{message.text}</div>
-      </div>
-    </Tooltip>
-  );
-};
-
-const StatusRender = (status) => {
-  switch (status) {
-    case "sent":
-      return <Icon component={MdDone} className="message-icon" />;
-    case "delivered":
-      return <Icon component={MdDoneAll} className="message-icon" />;
-    default:
-      return null;
-  }
-};