From ab8786b68b019ea5ea8b06d13b4d67a7f7fe6bc6 Mon Sep 17 00:00:00 2001
From: alexbcberio <alexbcberio@gmail.com>
Date: Thu, 6 Jan 2022 02:49:09 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20Handle=20chat=20message=20commands?=
 =?UTF-8?q?=20(only=20for=20broadcaster)?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 src/backend/chatClient/index.ts | 33 +++++++++++++++++++++++++++++++++
 src/enums/ChatCommands.ts       |  3 +++
 2 files changed, 36 insertions(+)
 create mode 100644 src/enums/ChatCommands.ts

diff --git a/src/backend/chatClient/index.ts b/src/backend/chatClient/index.ts
index 15aeeb7..a029ef7 100644
--- a/src/backend/chatClient/index.ts
+++ b/src/backend/chatClient/index.ts
@@ -4,6 +4,8 @@ import { getAuthProvider, getUsernameFromId } from "../helpers/twitch";
 import { Action } from "../../interfaces/actions/Action";
 import { ActionType } from "../../enums/ActionType";
 import { ChatClient } from "@twurple/chat";
+import { ChatCommands } from "../../enums/ChatCommands";
+import { TwitchPrivateMessage } from "@twurple/chat/lib/commands/TwitchPrivateMessage";
 import { broadcast } from "../helpers/webServer";
 import { start } from "../helpers/miniDb";
 
@@ -35,6 +37,8 @@ async function connect(channels: Array<any>): Promise<void> {
 		console.log(`${LOG_PREFIX}No permission on ${channel}: ${message}`);
 	});
 
+	chatClient.onMessage(onMessage);
+
 	await chatClient.connect();
 }
 
@@ -79,3 +83,32 @@ async function handleClientAction(action: Action): Promise<void> {
 			console.log(`${[LOG_PREFIX]}Couldn't handle action:`, action);
 	}
 }
+
+const commandPrefix = "!";
+
+async function onMessage(
+	channel: string,
+	user: string,
+	message: string,
+	msg: TwitchPrivateMessage
+): Promise<void> {
+	if (msg.userInfo.isBroadcaster && message.startsWith(commandPrefix)) {
+		message = message.substring(commandPrefix.length);
+
+		const args = message.split(" ");
+		const commandName = args.shift();
+
+		switch (commandName) {
+			case ChatCommands.Commands:
+				await say(
+					channel,
+					`Comandos disponibles: "${Object.values(ChatCommands).join('", "')}"`
+				);
+				break;
+			default:
+				console.log(
+					`${LOG_PREFIX}Command ${commandPrefix}${commandName} not handled`
+				);
+		}
+	}
+}
diff --git a/src/enums/ChatCommands.ts b/src/enums/ChatCommands.ts
new file mode 100644
index 0000000..21bec92
--- /dev/null
+++ b/src/enums/ChatCommands.ts
@@ -0,0 +1,3 @@
+export enum ChatCommands {
+	Commands = "commands",
+}