/
Chat.vue
474 lines (421 loc) · 12.1 KB
/
Chat.vue
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<template>
<clip-loader v-if="loading"></clip-loader>
<div v-else>
<div class="d-flex justify-content-center">
<div class="row justify-content-center h-75 w-100">
<div class="col-md-4 col-xl-3 chat">
<div class="card mb-sm-3 mb-md-0 h-100 contacts_card">
<div class="card-header text-light">
<p id="userId" class="inputBox">
User ID :
<strong @click="copy(user)" title="click to copy">{{
user
}}</strong>
</p>
<ToastMessage :toastmsg="toastmsg" :toastType="toastType" />
<form v-on:submit.prevent="onSubmit" class="form">
<div class="input-group">
<input
type="text"
class="form-control etrans"
required
v-model="room"
placeholder="Other User's ID"
/>
<div class="input-group-prepend">
<button class="btn btn-dark" @click="join_room(room)">
<strong>Add</strong>
</button>
</div>
</div>
</form>
</div>
<div class="card-body contacts_body">
<ChatListHeader :users="users" :activeUser="to" @switch="switchTo" />
</div>
<div class="card-footer"></div>
</div>
</div>
<div class="col-md-8 col-xl-6 chat h-100">
<div class="card">
<div class="card-header">
<div class="d-flex">
<p class="text-b">
<strong>{{ to }}</strong>
</p>
</div>
</div>
<div ref="messages" class="card-body msg_card_body">
<div v-if="!to">
<img src="../assets/logo.png" />
<p style="color: #42b983">
<strong>Protocol Initiated</strong>
</p>
</div>
<div v-else v-for="item in messages">
<div
v-if="item.user === 'self'"
class="d-flex justify-content-end mb-4"
>
<div class="msg_container color-b text-b">
{{ item.message }}
</div>
</div>
<div v-else class="d-flex justify-content-start mb-4">
<div class="msg_container color-a text-a">
{{ item.message }}
</div>
</div>
</div>
</div>
<div class="card-footer">
<form v-if="to" v-on:submit.prevent="onSubmit" class="form">
<div class="input-group">
<input
type="text"
class="form-control etrans"
v-model="message"
placeholder="Message"
/>
<div class="input-group-append">
<button
v-bind:disabled="!message"
class="btn btn-dark"
style="color: #78e08f"
@click="send"
>
<strong>Send</strong>
</button>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
import io from "socket.io-client";
import ClipLoader from "../assets/ClipLoader";
import { encryptMessage, decryptMessage } from "../utils/crypto";
import { Buffer } from "buffer";
import ToastMessage from "../components/ToastMessage.vue";
import ChatListHeader from "../components/ChatListHeader.vue";
URL = process.env.VUE_APP_APIURL;
const forge = require("node-forge");
const fetch = require("node-fetch");
const socket = io.connect(URL);
export default {
name: "Home",
components: {
ClipLoader,
ToastMessage,
ChatListHeader
},
data() {
return {
loading: true,
messages: [],
message: "",
users: [],
user: null,
toastmsg: "",
toastType: "",
to: null,
room: null,
};
},
methods: {
copy: async function (text) {
// finction to copy text to clipboard
await navigator.clipboard.writeText(text);
this.toastmsg = "Text Copied";
this.toastType = "success";
setTimeout(() => {
this.toastmsg = "";
this.toastType = "";
}, 2000);
},
login: async function () {
// login function used to restore session using cookie
const publicKey = this.keypair.publicKey;
if (this.$cookies.isKey("user")) {
const user = this.$cookies.get("user");
const response = await fetch(`${URL}/connect/${user}`);
const json = await response.json();
if (json.status) {
this.user = user;
} else {
const response = await fetch(`${URL}/login/${publicKey}`);
const json = await response.json();
this.user = json.user;
this.$cookies.set("user", this.user);
}
} else {
const response = await fetch(`${URL}/login/${publicKey}`);
const json = await response.json();
this.user = json.user;
this.$cookies.set("user", this.user);
}
},
connect: async function (user) {
// function to set publicKey of user and return status
const response = await fetch(`${URL}/connect/${user}`);
const json = await response.json();
if (json.status) {
this.$cookies.set(user, json.publicKey);
return true;
}
return false;
},
retrieve: function (value) {
// function retrieve messages from localStorage
if (localStorage.getItem(value)) {
try {
this.messages = JSON.parse(localStorage.getItem(value));
} catch (e) {
localStorage.removeItem(value);
}
} else {
this.messages = [];
}
},
join_room: async function (user) {
// make connection with other user
const response = await this.connect(user);
if (user !== this.user && response) {
this.rearrange(user);
this.switchTo(user);
} else {
this.toastmsg = "Wrong user";
this.toastType = "error";
setTimeout(() => {
this.toastmsg = "";
this.toastType = "";
}, 2000);
}
},
switchTo: async function (id) {
// switch to the user select
this.to = id;
await this.retrieve(id);
const publicKey = this.$cookies.get(this.to);
this[this.to] = Buffer.from(publicKey, "base64").toString();
this.publicKey = forge.pki.publicKeyFromPem(this[this.to]);
const container = this.$refs.messages;
container.scrollTop = container.scrollHeight;
},
send: async function () {
const message = encryptMessage(this.message, this.publicKey);
socket.emit("send_message", {
user: this.user,
to: this.to,
message: message,
});
await this.messages.push({ user: "self", message: this.message });
this.setMessages(this.to, JSON.stringify(this.messages));
this.rearrange(this.to);
this.message = "";
},
setMessages: function (user, parsed) {
// autoscroll to the bottom of container
localStorage.setItem(user, parsed);
const container = this.$refs.messages;
container.scrollTop = container.scrollHeight;
},
rearrange: function (user) {
// rearrange user
const users = this.users.slice();
users.unshift(user);
this.users = [...new Set(users)];
const parsed = JSON.stringify(this.users);
localStorage.setItem("users", parsed);
},
load: async function () {
this.loading = true;
const keypair = localStorage.getItem("keypair");
if (keypair === null) {
// generates RSA keypair
await forge.pki.rsa.generateKeyPair(
{ bits: 2048, workers: 2 },
(err, keypair) => {
this.keypair = {
publicKey: Buffer.from(
forge.pki.publicKeyToPem(keypair.publicKey)
).toString("base64"),
privateKey: Buffer.from(
forge.pki.privateKeyToPem(keypair.privateKey)
).toString("base64"),
};
localStorage.setItem("keypair", JSON.stringify(this.keypair));
this.privateKey = keypair.privateKey;
}
);
} else {
this.keypair = JSON.parse(keypair);
this.privateKey = Buffer.from(
this.keypair.privateKey,
"base64"
).toString();
this.privateKey = forge.pki.privateKeyFromPem(this.privateKey);
}
// restore session
await this.login();
// join room
socket.emit("join_room", {
user: this.user,
});
// retrieve users from localStorage
if (localStorage.getItem("users")) {
this.users = JSON.parse(localStorage.getItem("users"));
}
this.loading = false;
},
},
beforeMount() {
this.load();
},
mounted() {
// socket to recieve messages
socket.on("receive_message", (data) => {
const message = decryptMessage(data.message, this.privateKey);
let temp = [];
if (localStorage.getItem(data.user)) {
temp = JSON.parse(localStorage.getItem(data.user));
}
temp.push({ user: data.user, message: message });
if (this.to === data.user) {
this.messages = temp;
} else if (!this.users.includes(data.user)) {
// add to users if not present
this.connect(data.user);
}
this.rearrange(data.user);
this.setMessages(data.user, JSON.stringify(temp));
});
socket.on("room_announcements", (data) => {
console.log(data);
});
},
};
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
@import url("https://fonts.googleapis.com/css2?family=Roboto&display=swap");
* {
font-family: "Roboto", "Helvetica", sans-serif;
}
.inputBox:hover {
cursor: pointer;
}
h3 {
margin: 40px 0 0;
}
ul {
list-style-type: none;
padding: 0;
}
li {
display: list-item;
margin: 0 10px;
}
a {
color: #42b983;
}
button {
border-radius: 0 15px 15px 0 !important;
border: 0 !important;
}
input {
border-radius: 15px 0 0 15px !important;
border: 0 !important;
background-color: rgba(255, 255, 255, 0.1);
color: #f9f6f7;
}
input:focus {
box-shadow: none !important;
background-color: rgba(255, 255, 255, 0.05);
color: #f9f6f7;
outline: 0;
}
input::placeholder {
color: gray;
}
.inputBox {
margin-top: 0.4rem;
border-radius: 10px;
background-color: #23262a;
padding: 0.1rem 0;
opacity: 0.7;
}
.btn.focus,
.btn:focus {
outline: 0;
box-shadow: none !important;
}
.chat {
border: 1px solid rgb(75, 70, 71) !important;
padding: 0 !important;
border-radius: 10px;
}
.card {
border-radius: 10px !important;
border: 1px double rgba(255, 255, 255, 0.1) !important;
background-color: #0d1117;
height: 85vh;
}
.card-header {
border-radius: 10px 10px 0 0 !important;
border: 0 !important;
background-color: rgba(0, 0, 0, 0.2);
}
.card-footer {
border-radius: 0 0 10px 10px !important;
border: 0 !important;
background-color: rgba(0, 0, 0, 0.4);
}
.msg_card_body {
overflow-y: auto;
height: 75vh;
}
.contact_body {
border-radius: 15px !important;
border: 1px double rgba(0, 0, 0, 0.3) !important;
background-color: rgba(55, 55, 55, 0.1);
text-align: center;
padding: 1rem;
width: 100%;
color: #f9f6f7;
}
.text-a {
color: #212529;
}
.text-b {
color: #f9f6f7;
}
.color-a {
background-color: #ffd700;
}
.color-b {
background-color: #1f4287;
}
.msg_container {
margin-top: auto;
margin-bottom: auto;
margin-left: 10px;
border-radius: 25px;
padding: 10px;
position: relative;
max-width: 75%;
text-align: left;
}
.etrans {
-webkit-transition: all 0.2s ease-out;
-moz-transition: all 0.2s ease-out;
-ms-transition: all 0.2s ease-out;
-o-transition: all 0.2s ease-out;
transition: all 0.2s ease-out;
}
</style>