import { WEBSOCKET_BASE_URL } from '@/config/setting'

export default class WebSocketClient {

    constructor(path) {
        this.url = WEBSOCKET_BASE_URL + path;
        this.webSocket = null;
    }

    connect() {
        if (!this.url) {
            console.error('WebSocketClient: Cannot connect without url.');
            return;
        }

        this.webSocket = new WebSocket(this.url);

        this.webSocket.onopen = (event) => {
            console.log('WebSocket connection opened:', event);
            // 连接成功后可以发送消息
            // this.sendMessage('Hello Server!');
        };

        this.webSocket.onmessage = (event) => {
            console.log('WebSocket message received:', event.data);
            this.onMessage(event.data);
        };

        this.webSocket.onerror = (event) => {
            console.error('WebSocket error observed:', event);
        };

        this.webSocket.onclose = (event) => {
            console.log('WebSocket connection closed!');
            this.reconnect();
        };
    }

    sendMessage(message) {
        if (this.webSocket.readyState === WebSocket.OPEN) {
            this.webSocket.send(message);
        } else {
            console.error('WebSocketClient: Cannot send message, WebSocket connection is not open.');
        }
    }

    onMessage(data) {
        // 子类可能会重写这个方法来处理消息
        console.log('WebSocketClient: Message received:', data);
    }

    close() {
        if (this.webSocket.readyState === WebSocket.OPEN) {
            this.webSocket.close();
        }
    }

    reconnect() {
        setTimeout(() => {
            console.log('WebSocketClient: Attempting to reconnect...');
            this.connect();
        }, 3000);
    }
    
}