From 6aba097c853cc176d03bd93a462bd0a515c9732f Mon Sep 17 00:00:00 2001
From: James Lyne <jim+github@not-null.co.uk>
Date: Thu, 7 Jan 2021 22:40:05 +0000
Subject: [PATCH] Add support for sending chat messages

---
 src/api.ts                  | 39 ++++++++++++++++
 src/components/ChatBox.vue  | 91 ++++++++++++++++++++++++++++++++++++-
 src/errors/ChatError.ts     | 22 +++++++++
 src/scss/_placeholders.scss |  1 +
 src/scss/style.scss         | 84 +++++++++-------------------------
 src/store/action-types.ts   |  1 +
 src/store/actions.ts        |  8 ++++
 src/store/state.ts          |  4 ++
 8 files changed, 186 insertions(+), 64 deletions(-)
 create mode 100644 src/errors/ChatError.ts

diff --git a/src/api.ts b/src/api.ts
index 156d77e..425f3a9 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -35,6 +35,7 @@ import {
 	DynmapWorldMap
 } from "@/dynmap";
 import {useStore} from "@/store";
+import ChatError from "@/errors/ChatError";
 
 function buildServerConfig(response: any): DynmapServerConfig {
 	return {
@@ -669,5 +670,43 @@ export default {
 
 			return sets;
 		});
+	},
+
+	sendChatMessage(message: string) {
+		const store = useStore();
+
+		if(!store.state.components.chatSending) {
+			return Promise.reject(new ChatError("Chat is not enabled"));
+		}
+
+		return fetch(window.config.url.sendmessage, {
+			method: 'POST',
+			body: JSON.stringify({
+				name: null,
+				message: message,
+			})
+		}).then((response) => {
+			if(response.status === 403) { //Rate limited
+				throw new ChatError(store.state.messages.chatCooldown
+					.replace('%interval%', store.state.components.chatSending!.cooldown.toString()));
+			}
+
+			if (!response.ok) {
+				throw new Error('Network request failed');
+			}
+
+			return response.json();
+		}).then(response => {
+			if (response.error !== 'none') {
+				throw new ChatError(store.state.messages.chatNotAllowed);
+			}
+		}).catch(e => {
+			if(!(e instanceof ChatError)) {
+				console.error('Unexpected error while sending chat message');
+				console.trace(e);
+			}
+
+			throw e;
+		});
 	}
 }
diff --git a/src/components/ChatBox.vue b/src/components/ChatBox.vue
index f8c4411..78d72ff 100644
--- a/src/components/ChatBox.vue
+++ b/src/components/ChatBox.vue
@@ -20,13 +20,21 @@
 			<ChatMessage v-for="message in messages" :key="message.timestamp" :message="message"></ChatMessage>
 			<li v-if="!messages.length" class="message message--skeleton">No chat messages yet...</li>
 		</ul>
+		<form v-if="sendingEnabled" class="chat__form" @submit.prevent="sendMessage">
+			<div v-if="sendingError" class="chat__error">{{ sendingError }}</div>
+			<input ref="chatInput" v-model="enteredMessage" class="chat__input" type="text" :maxlength="messageMaxLength"
+					placeholder="Type your chat message here..."  :disabled="sendingMessage">
+			<button class="chat__send" :disabled="!enteredMessage || sendingMessage">Send</button>
+		</form>
 	</section>
 </template>
 
 <script lang="ts">
-	import {defineComponent, computed} from "@vue/runtime-core";
+	import {defineComponent, ref, computed, watch} from "@vue/runtime-core";
 	import {useStore} from "@/store";
 	import ChatMessage from "@/components/chat/ChatMessage.vue";
+	import {ActionTypes} from "@/store/action-types";
+	import ChatError from "@/errors/ChatError";
 
 	export default defineComponent({
 		components: {
@@ -35,16 +43,68 @@
 		setup() {
 			const store = useStore(),
 				componentSettings = computed(() => store.state.components.chatBox),
+				chatBoxVisible = computed(() => store.state.ui.visibleElements.has('chat')),
+
+				sendingEnabled = computed(() => {
+					return store.state.components.chatSending &&
+						(!store.state.components.chatSending.loginRequired || store.state.loggedIn);
+				}),
+				messageMaxLength = computed(() => store.state.components.chatSending?.maxLength),
+
+				chatInput = ref<HTMLInputElement | null>(null),
+				enteredMessage = ref<string>(""),
+				sendingMessage = ref<boolean>(false),
+				sendingError = ref<string | null>(null),
+
 				messages = computed(() => {
 					if(componentSettings.value!.messageHistory) {
 						return store.state.chat.messages.slice(0, componentSettings.value!.messageHistory);
 					} else {
 						return store.state.chat.messages;
 					}
-				});
+				}),
+
+				sendMessage = () => {
+					const message = enteredMessage.value.trim().substring(0, messageMaxLength.value);
+
+					if(!message) {
+						return;
+					}
+
+					sendingMessage.value = true;
+					sendingError.value = null;
+
+					store.dispatch(ActionTypes.SEND_CHAT_MESSAGE, message).then(() => {
+						enteredMessage.value = "";
+						sendingError.value = null;
+					}).catch(e => {
+						if(e instanceof ChatError) {
+							sendingError.value = e.message;
+						} else {
+							sendingError.value = `An unexpected error occurred. See console for details.`;
+						}
+					}).finally(() => {
+						sendingMessage.value = false;
+
+						requestAnimationFrame(() => chatInput.value!.focus());
+					});
+				};
+
+			watch(chatBoxVisible, newValue => {
+				if(newValue && sendingEnabled.value) {
+					requestAnimationFrame(() => chatInput.value!.focus());
+				}
+			});
 
 			return {
+				chatInput,
+				enteredMessage,
+				sendMessage,
 				messages,
+				sendingEnabled,
+				sendingMessage,
+				sendingError,
+				messageMaxLength
 			}
 		}
 	})
@@ -88,6 +148,33 @@
 			}
 		}
 
+		.chat__form {
+			display: flex;
+			flex-wrap: wrap;
+			align-items: stretch;
+			margin: 1.5rem -1.5rem -1.5rem;
+
+			.chat__input {
+				border-bottom-left-radius: $global-border-radius;
+				flex-grow: 1;
+			}
+
+			.chat__send {
+				padding-left: 1rem;
+				padding-right: 1rem;
+				border-radius: 0 0 $global-border-radius 0;
+			}
+
+			.chat__error {
+				background-color: #771616;
+				color: #eeeeee;
+				font-size: 1.6rem;
+				padding: 0.5rem 1rem;
+				line-height: 2rem;
+				width: 100%;
+			}
+		}
+
 		@media (max-width: 25rem), (max-height: 30rem) {
 			bottom: 6.5rem;
 			left: 6.5rem;
diff --git a/src/errors/ChatError.ts b/src/errors/ChatError.ts
new file mode 100644
index 0000000..9173e42
--- /dev/null
+++ b/src/errors/ChatError.ts
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2021 James Lyne
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+export default class ChatError extends Error {
+	constructor(message: string) {
+		super(message);
+		this.name = "ChatError";
+	}
+}
\ No newline at end of file
diff --git a/src/scss/_placeholders.scss b/src/scss/_placeholders.scss
index afeb315..eb8582f 100644
--- a/src/scss/_placeholders.scss
+++ b/src/scss/_placeholders.scss
@@ -26,6 +26,7 @@
 	text-align: center;
 	position: relative;
 	transition: color 0.2s ease-in, background-color 0.2s ease-in;
+	font-size: 1.6rem;
 
 	&:hover, &.active {
 		background-color: $global-focus-color;
diff --git a/src/scss/style.scss b/src/scss/style.scss
index ae69e0f..98d28b4 100644
--- a/src/scss/style.scss
+++ b/src/scss/style.scss
@@ -115,6 +115,28 @@ button {
 	@extend %button;
 }
 
+input {
+	appearance: none;
+	background-color: #333333;
+	box-shadow: none;
+	color: #cccccc;
+	font-size: 1.6rem;
+	padding: 1rem;
+	border: 0.2rem solid #333333;
+	border-radius: 0;
+
+	&:focus {
+		color: #eeeeee;
+		outline-color: #eeeeee;
+	}
+
+	&[disabled] {
+		background-color: #333333;
+		border-color: #333333;
+		cursor: not-allowed;
+	}
+}
+
 .checkbox {
 	display: flex;
 	position: relative;
@@ -406,26 +428,6 @@ button {
  * Chat
  */
 
-
-
-.chatinput {
-
-	width: 608px;
-	height: 16px;
-
-	outline: none;
-	color: #fff;
-    border: 0;
-    //background: rgba(0, 0, 0, 0.6) url(../assets/images/chat_cursor.png) no-repeat 1px center;
-
-    margin: 4px;
-	padding: 1px 1px 1px 15px;
-}
-
-.chatsendbutton {
-    background-color: #bbb;
-}
-
 .loginbutton {
 	color: #000;
 	font-family: sans-serif;
@@ -438,48 +440,6 @@ button {
 	margin: 0;
 }
 
-.messagelist {
-	color: white;
-	overflow: hidden;
-
-	width: 622px;
-	max-height: 6em;
-
-	margin: 4px 4px 0 4px;
-	padding: 1px;
-}
-
-.scrollback:hover {
-	overflow-y: auto !important;
-}
-
-.messagerow {
-	position: relative;
-	max-height: 200px;
-
-	left: 0;
-	bottom: 0;
-
-	color: #fff;
-	font-weight: bold;
-}
-
-.messageicon {
-	position: relative;
-	top: 1px;
-	left: 0;
-}
-
-.messagetext {
-	position: relative;
-	top: -3px;
-	left: 0;
-}
-
-.balloonmessage {
-	word-wrap: break-word;
-}
-
 .dynmap .mapMarker .markerName_offline_players {
 	font-style: italic;
 }
diff --git a/src/store/action-types.ts b/src/store/action-types.ts
index 6ae00a4..b9cba0c 100644
--- a/src/store/action-types.ts
+++ b/src/store/action-types.ts
@@ -24,4 +24,5 @@ export enum ActionTypes {
 	POP_CIRCLE_UPDATES = "popCircleUpdates",
 	POP_LINE_UPDATES = "popLineUpdates",
 	POP_TILE_UPDATES = "popTileUpdates",
+	SEND_CHAT_MESSAGE = "sendChatMessage",
 }
\ No newline at end of file
diff --git a/src/store/actions.ts b/src/store/actions.ts
index 0877b51..fb20782 100644
--- a/src/store/actions.ts
+++ b/src/store/actions.ts
@@ -70,6 +70,10 @@ export interface Actions {
 		{commit}: AugmentedActionContext,
 		payload: number
 	): Promise<DynmapTileUpdate[]>
+	[ActionTypes.SEND_CHAT_MESSAGE](
+		{commit}: AugmentedActionContext,
+		payload: string
+	): Promise<void>
 }
 
 export const actions: ActionTree<State, State> & Actions = {
@@ -239,4 +243,8 @@ export const actions: ActionTree<State, State> & Actions = {
 
 		return Promise.resolve(updates);
 	},
+
+	[ActionTypes.SEND_CHAT_MESSAGE]({commit, state}, message: string): Promise<void> {
+		return API.sendChatMessage(message);
+	},
 }
\ No newline at end of file
diff --git a/src/store/state.ts b/src/store/state.ts
index 1768525..2608234 100644
--- a/src/store/state.ts
+++ b/src/store/state.ts
@@ -30,6 +30,8 @@ export type State = {
 	messages: DynmapMessageConfig;
 	components: DynmapComponentConfig;
 
+	loggedIn: boolean;
+
 	worlds: Map<string, DynmapWorld>;
 	maps: Map<string, DynmapWorldMap>;
 	players: Map<string, DynmapPlayer>;
@@ -95,6 +97,8 @@ export const state: State = {
 		anonymousQuit: '',
 	},
 
+	loggedIn: false,
+
 	worlds: new Map(), //Defined (loaded) worlds with maps from configuration.json
 	maps: new Map(), //Defined maps from configuration.json
 	players: new Map(), //Online players from world.json