Renamed /src to /frontend.
This commit is contained in:
337
frontend/ui/Chat.vue
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337
frontend/ui/Chat.vue
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<template>
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<div class="chat-container">
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<hr />
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<h2>Chat</h2>
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<div class="history" ref="history" v-if="chatHistory.length > 0">
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<div class="opaque-skirt"></div>
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<div v-if="hasMorePages" class="fetch-older-history">
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<button @click="loadMoreHistory">Hent eldre meldinger</button>
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</div>
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<div class="history-message"
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v-for="(history, index) in chatHistory"
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:key="`${history.username}-${history.timestamp}-${index}`"
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>
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<div>
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<span class="username">{{ history.username }}</span>
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<span class="timestamp">{{ getTime(history.timestamp) }}</span>
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</div>
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<span class="message">{{ history.message }}</span>
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</div>
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</div>
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<div v-if="username" class="input">
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<input @keyup.enter="sendMessage" type="text" v-model="message" placeholder="Melding.." />
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<button @click="sendMessage">Send</button>
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<button @click="removeUsername">Logg ut</button>
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</div>
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<div v-else class="username-dialog">
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<input
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type="text"
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@keyup.enter="setUsername"
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v-model="temporaryUsername"
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maxlength="30"
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placeholder="Ditt navn.."
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/>
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<div class="validation-error" v-if="validationError">
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{{ validationError }}
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</div>
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<button @click="setUsername">Lagre brukernavn</button>
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</div>
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</div>
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</template>
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<script>
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import { getChatHistory } from "@/api";
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import io from "socket.io-client";
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export default {
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data() {
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return {
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socket: null,
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chatHistory: [],
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hasMorePages: true,
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message: "",
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page: 1,
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pageSize: 10,
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temporaryUsername: null,
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username: null,
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validationError: undefined
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};
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},
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created() {
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getChatHistory(1, this.pageSize)
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.then(resp => {
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this.chatHistory = resp.messages;
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this.hasMorePages = resp.total != resp.messages.length;
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});
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const username = window.localStorage.getItem('username');
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if (username) {
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this.username = username;
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this.emitUsernameOnConnect = true;
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}
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},
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watch: {
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chatHistory: {
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handler: function(newVal, oldVal) {
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if (oldVal.length == 0) {
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this.scrollToBottomOfHistory();
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}
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else if (newVal && newVal.length == oldVal.length) {
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if (this.isScrollPositionAtBottom()) {
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this.scrollToBottomOfHistory();
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}
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} else {
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const prevOldestMessage = oldVal[0];
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this.scrollToMessageElement(prevOldestMessage);
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}
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},
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deep: true
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}
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},
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beforeDestroy() {
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this.socket.disconnect();
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this.socket = null;
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},
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mounted() {
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const BASE_URL = __APIURL__ || window.location.origin;
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this.socket = io(`${BASE_URL}`);
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this.socket.on("chat", msg => {
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this.chatHistory.push(msg);
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});
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this.socket.on("disconnect", msg => {
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this.wasDisconnected = true;
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});
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this.socket.on("connect", msg => {
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if (
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this.emitUsernameOnConnect ||
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(this.wasDisconnected && this.username != null)
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) {
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this.setUsername(this.username);
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}
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});
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this.socket.on("accept_username", msg => {
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const { reason, success, username } = msg;
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this.usernameAccepted = success;
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if (success !== true) {
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this.username = null;
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this.validationError = reason;
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} else {
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this.usernameAllowed = true;
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this.username = username;
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this.validationError = null;
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window.localStorage.setItem("username", username);
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}
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});
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},
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methods: {
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loadMoreHistory() {
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let { page, pageSize } = this;
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page = page + 1;
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getChatHistory(page, pageSize)
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.then(resp => {
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this.chatHistory = resp.messages.concat(this.chatHistory);
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this.page = page;
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this.hasMorePages = resp.total != this.chatHistory.length;
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});
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},
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pad(num) {
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if (num > 9) return num;
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return `0${num}`;
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},
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getTime(timestamp) {
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let date = new Date(timestamp);
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const timeString = `${this.pad(date.getHours())}:${this.pad(
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date.getMinutes()
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)}:${this.pad(date.getSeconds())}`;
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if (date.getDate() == new Date().getDate()) {
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return timeString;
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}
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return `${date.toLocaleDateString()} ${timeString}`;
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},
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sendMessage() {
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const message = { message: this.message };
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this.socket.emit("chat", message);
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this.message = '';
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this.scrollToBottomOfHistory();
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},
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setUsername(username=undefined) {
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if (this.temporaryUsername) {
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username = this.temporaryUsername;
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}
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const message = { username: username };
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this.socket.emit("username", message);
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},
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removeUsername() {
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this.username = null;
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this.temporaryUsername = null;
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window.localStorage.removeItem("username");
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},
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isScrollPositionAtBottom() {
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const { history } = this.$refs;
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if (history) {
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return history.offsetHeight + history.scrollTop >= history.scrollHeight;
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}
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return false
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},
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scrollToBottomOfHistory() {
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setTimeout(() => {
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const { history } = this.$refs;
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history.scrollTop = history.scrollHeight;
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}, 1);
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},
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scrollToMessageElement(message) {
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const elemTimestamp = this.getTime(message.timestamp);
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const self = this;
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const getTimeStamp = (elem) => elem.getElementsByClassName('timestamp')[0].innerText;
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const prevOldestMessageInNewList = (elem) => getTimeStamp(elem) == elemTimestamp;
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setTimeout(() => {
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const { history } = self.$refs;
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const childrenElements = Array.from(history.getElementsByClassName('history-message'));
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const elemInNewList = childrenElements.find(prevOldestMessageInNewList);
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history.scrollTop = elemInNewList.offsetTop - 70
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}, 1);
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}
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}
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};
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</script>
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<style lang="scss" scoped>
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@import "@/styles/media-queries.scss";
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@import "@/styles/variables.scss";
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h2 {
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text-align: center;
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}
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hr {
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display: none;
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@include mobile {
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display: block;
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width: 80%;
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}
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}
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.chat-container {
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height: 100%;
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width: 50%;
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position: relative;
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@include mobile {
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width: 100%;
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}
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}
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input {
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width: 80%;
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}
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.input {
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display: flex;
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}
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.history {
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height: 75%;
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overflow-y: scroll;
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position: relative;
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&-message {
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display: flex;
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flex-direction: column;
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margin: 0.35rem 0;
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position: relative;
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.username {
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font-weight: bold;
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font-size: 1.05rem;
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margin-right: 0.3rem;
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}
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.timestamp {
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font-size: 0.9rem;
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top: 2px;
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position: absolute;
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}
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}
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&-message:nth-of-type(2) {
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margin-top: 1rem;
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}
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& .opaque-skirt {
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width: 100%;
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position: absolute;
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height: 1rem;
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z-index: 1;
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background: linear-gradient(
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to bottom,
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white,
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rgba(255, 255, 255, 0)
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);
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}
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& .fetch-older-history {
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display: flex;
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justify-content: center;
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margin: 1rem 0;
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}
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@include mobile {
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height: 300px;
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}
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}
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.username-dialog {
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display: flex;
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flex-direction: row;
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justify-content: center;
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position: relative;
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.validation-error {
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position: absolute;
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background-color: $light-red;
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color: $red;
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top: -3.5rem;
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left: 0.5rem;
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padding: 0.75rem;
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border-radius: 4px;
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&::before {
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content: '';
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position: absolute;
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top: 2.1rem;
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left: 2rem;
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width: 1rem;
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height: 1rem;
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transform: rotate(45deg);
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background-color: $light-red;
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}
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}
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}
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button {
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position: relative;
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display: inline-block;
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background: #b7debd;
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color: #333;
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padding: 10px 30px;
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border: 0;
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width: fit-content;
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font-size: 1rem;
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/* height: 1.5rem; */
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/* max-height: 1.5rem; */
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margin: 0 2px;
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cursor: pointer;
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font-weight: 500;
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transition: transform 0.5s ease;
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-webkit-font-smoothing: antialiased;
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touch-action: manipulation;
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}
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</style>
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