From 5452b574acff3ee7c474f2f22c03d35a10671725 Mon Sep 17 00:00:00 2001
From: SrGooglo <srgooglo@ragestudio.net>
Date: Wed, 14 Dec 2022 15:33:22 +0000
Subject: [PATCH] implement `LiveChat` rooms feature

---
 .../app/src/components/LiveChat/index.jsx     | 161 +++++++++++++++---
 .../app/src/components/LiveChat/index.less    |  68 +++++++-
 2 files changed, 203 insertions(+), 26 deletions(-)

diff --git a/packages/app/src/components/LiveChat/index.jsx b/packages/app/src/components/LiveChat/index.jsx
index 4e5d4c83..f1feb578 100644
--- a/packages/app/src/components/LiveChat/index.jsx
+++ b/packages/app/src/components/LiveChat/index.jsx
@@ -1,52 +1,134 @@
 import React from "react"
 import * as antd from "antd"
+import classnames from "classnames"
+import { io } from "socket.io-client"
+import config from "config"
+import SessionModel from "models/session"
 
 import "./index.less"
 
 const Line = (props) => {
-    const { user, content, timestamp } = props
+    const { user, content } = props
 
-    return <div>
-        {content}
+    return <div className="textRoom_line">
+        <div className="textRoom_line_user">
+            <h4>{user.fullName ?? user.username}</h4>
+        </div>
+        <div className="textRoom_line_content">
+            <span>{content}</span>
+        </div>
     </div>
 }
-
 export default class LiveChat extends React.Component {
     state = {
         socket: null,
+        connecting: true,
+        connectionEnd: false,
+        roomInfo: null,
         timeline: [],
+        writtedMessage: "",
     }
 
-    joinSocketRoom = () => {
+    timelineRef = React.createRef()
+
+    joinSocketRoom = async () => {
+        await this.setState({ connecting: true })
+
         const { roomId } = this.props
 
         const socketNamespace = `/textRoom/${roomId}`
 
         console.log(`Joining socket room [${socketNamespace}]`)
 
-        const socket = app.api.namespaces.main.wsInterface.manager.socket(socketNamespace)
+        const socket = io(config.remotes.messagingApi, {
+            transports: ["websocket"],
+            autoConnect: false,
+        })
 
-        socket.connect()
+        socket.auth = {
+            token: SessionModel.token,
+        }
 
-        console.log("Socket", socket)
+        socket.on("connect_error", (err) => {
+            console.error("Connection error", err)
+
+            this.setState({ connectionEnd: true })
+
+            if (err.message === "auth:token_invalid") {
+                console.error("Invalid token")
+            }
+        })
 
         socket.on("connect", () => {
-            console.log("Socket connected")
+            socket.emit("join", { room: socketNamespace }, (error, info) => {
+                if (error) {
+                    this.setState({ connectionEnd: true })
+                    return console.error("Error joining room", error)
+                }
 
-            socket.on("message", (data) => {
-                console.log("Message received", data)
+                this.setState({
+                    connecting: false,
+                    roomInfo: info,
+                })
             })
         })
 
+        socket.on("message", (message) => {
+            this.pushToTimeline(message)
+            this.scrollTimelineToBottom()
+        })
+
+        socket.connect()
+
         this.setState({ socket })
     }
 
     submitMessage = (message) => {
         const { socket } = this.state
 
-        console.log("Sending message", message)
+        socket.emit("send:message", {
+            message
+        })
 
-        socket.emit("message", message)
+        this.scrollTimelineToBottom()
+
+        // remove writted message
+        this.setState({
+            writtedMessage: ""
+        })
+    }
+
+    pushToTimeline = (message) => {
+        const { timeline } = this.state
+
+        this.setState({
+            timeline: [...timeline, message]
+        })
+    }
+
+    handleInputChange = (e) => {
+        this.setState({
+            writtedMessage: e.target.value
+        })
+    }
+
+    handleOnEnter = (e) => {
+        e.preventDefault()
+        e.stopPropagation()
+
+        if (e.target.value.length === 0) {
+            return
+        }
+
+        this.submitMessage(e.target.value)
+    }
+
+    scrollTimelineToBottom = () => {
+        // scroll to bottom smoothly
+        this.timelineRef.current.scrollTo({
+            top: this.timelineRef.current.scrollHeight,
+            behavior: "smooth"
+        })
     }
 
     componentDidMount = async () => {
@@ -58,21 +140,52 @@ export default class LiveChat extends React.Component {
     }
 
     render() {
-        return <div className="liveChat">
-            {this.state.timeline.map((line, index) => <Line key={index} {...line} />)}
+        if (this.state.connectionEnd) {
+            return <div className="liveChat">
+                <antd.Result
+                    status="error"
+                    title="Connection error"
+                    subTitle="Cannot connect to the server"
+                />
+            </div>
+        }
 
-            <div className="textInput">
+        if (this.state.connecting) {
+            return <div className="liveChat">
+                <antd.Skeleton active />
+            </div>
+        }
+
+        return <div
+            className={classnames(
+                "liveChat",
+                { ["empty"]: this.state.timeline.length === 0 }
+            )}
+        >
+            {
+                this.state.timeline.length === 0 ?
+                    <antd.Empty description="Welcome to the room" /> :
+                    <div
+                        className="liveChat_timeline"
+                        ref={this.timelineRef}
+                    >
+                        {
+                            this.state.timeline.map((line, index) => {
+                                return <Line key={index} {...line} />
+                            })
+                        }
+                    </div>
+            }
+
+            <div className="liveChat_textInput">
                 <antd.Input.TextArea
                     placeholder="Type your message here"
                     autoSize={{ minRows: 1, maxRows: 3 }}
-                    onPressEnter={(e) => {
-                        e.preventDefault()
-                        e.stopPropagation()
-
-                        console.log("Enter pressed", e.target.value)
-
-                        this.submitMessage(e.target.value)
-                    }}
+                    value={this.state.writtedMessage}
+                    onChange={this.handleInputChange}
+                    onPressEnter={this.handleOnEnter}
+                    maxLength={this.state.roomInfo?.limitations?.maxMessageLength ?? 100}
+                    showCount
                 />
             </div>
         </div>
diff --git a/packages/app/src/components/LiveChat/index.less b/packages/app/src/components/LiveChat/index.less
index 1306152b..43d6ddd6 100644
--- a/packages/app/src/components/LiveChat/index.less
+++ b/packages/app/src/components/LiveChat/index.less
@@ -1,18 +1,82 @@
 .liveChat {
+    position: relative;
+
     display: flex;
     flex-direction: column;
 
     width: 100%;
     height: 100%;
 
-    position: relative;
+    overflow: hidden;
 
-    .textInput {
+    &.empty {
+        justify-content: center;
+        align-items: center;
+    }
+
+    .liveChat_timeline {
+        height: 100%;
+        overflow-y: scroll;
+
+        margin-bottom: 70px;
+    }
+
+    .liveChat_textInput {
         position: absolute;
         bottom: 0;
         left: 0;
 
+        margin-bottom: 20px;
+
         width: 100%;
         height: fit-content;
+
+        color: var(--text-color);
+
+        .ant-input-textarea-show-count::after {
+            color: var(--text-color);
+        }
+    }
+}
+
+.textRoom_line {
+    display: flex;
+    flex-direction: column;
+
+    padding: 5px 10px;
+    margin-bottom: 10px;
+
+    border-radius: 12px;
+
+    background-color: var(--background-color-accent);
+
+    h1,
+    h2,
+    h3,
+    h4,
+    span {
+        margin: 0;
+        user-select: text;
+    }
+
+    .textRoom_line_user {
+        font-weight: bold;
+        font-size: 1rem;
+        color: var(--background-color-contrast);
+
+        overflow: hidden;
+
+        text-overflow: ellipsis;
+        white-space: nowrap;
+    }
+
+    .textRoom_line_content {
+        font-size: 0.8rem;
+        color: var(--text-color);
+
+        padding: 0 10px;
+
+        word-break: break-all;
+        white-space: pre-wrap;
     }
 }
\ No newline at end of file