yaklang-chrome-extension/public/socket.js

export const ActionType = {
    CONNECT: 'connect',
    SEND_MESSAGE: 'send_message',
    DISCONNECT: 'disconnect',
    STATUS: 'status',
    PROXY_STATUS: 'proxy_status',
    SET_PROXY: 'set_proxy',
    CLEAR_PROXY: 'clear_proxy',
    INJECT_SCRIPT: 'yakit_inject_script',
    TO_EXTENSION_PAGE: "yakit_to_extension_page",
    BADGE_COUNT: "yakit_badge",
}

export class WebSocketManager {
    constructor() {
        this.socket = null;
        this.intervalId = null;
    }

    connectWebsocket(url, port) {
        this.disconnectWebsocket();
        this.socket = new WebSocket(url);

        this.socket.onopen = () => {
            chrome.runtime.sendMessage({action: ActionType.STATUS, connected: true, port: port});
            this.startHeartbeat();
        };

        this.socket.onmessage = (event) => {
            console.log("event", event)
            this.handleMessage(event.data);
        };

        this.socket.onclose = () => {
            chrome.runtime.sendMessage({action: ActionType.STATUS, connected: false});
        };

        this.socket.onerror = (error) => {
            console.error("WebSocket Error:", error);
        };
    }

    sendMessage(message) {
        if (this.isConnected()) {
            try {
                console.log("发射", message)
                this.socket.send(JSON.stringify(message));
            } catch (e) {
                console.error("Error sending message:", e);
            }
        } else {
            console.error("WebSocket is not connected.");
        }
    }

    disconnectWebsocket() {
        if (this.socket) {
            try {
                this.socket.close();
                chrome.runtime.sendMessage({action: ActionType.STATUS, connected: false});
            } catch (e) {
                console.error("Error closing websocket:", e);
            }
            this.socket = null;
            this.stopHeartbeat();
        }
    }

    startHeartbeat() {
        this.intervalId = setInterval(() => this.heartbeat(), 25000);
    }

    stopHeartbeat() {
        if (this.intervalId) {
            clearInterval(this.intervalId);
            this.intervalId = null;
        }
    }

    heartbeat() {
        if (this.isConnected()) {
            try {
                this.socket.send(JSON.stringify({"type": "heartbeat"}));
            } catch (e) {
                console.error("Error sending heartbeat:", e);
            }
        } else {
            this.disconnectWebsocket();
        }
    }

    isConnected() {
        return this.socket && this.socket.readyState === WebSocket.OPEN;
    }

    handleMessage(message) {
        message = JSON.parse(message);
        if (message && message.type === "eval") {
            (async () => {
                const [tab] = await getTab();
                await injectScriptAndSendMessage(tab.id, {
                    type: ActionType.INJECT_SCRIPT,
                    value: {
                        mode: "CONTENT_EVAL_CODE", code: message.code,
                    }
                });
            })();
        }
    }
}

const getTab = async () => {
    return chrome.tabs.query({active: true, lastFocusedWindow: true})
}

export const injectScriptAndSendMessage = async (tabId, message) => {
    try {
        // 注入 JS 脚本
        await chrome.scripting.executeScript({
            target: {tabId: tabId},
            files: ['content.js']
        });

        // 发送消息
        const response = await chrome.tabs.sendMessage(tabId, message);

        console.log("response", response);
        if (response && response.action === ActionType.TO_EXTENSION_PAGE) {
            await chrome.runtime.sendMessage(response);
        }
    } catch (err) {
        console.error('Script or CSS injection failed:', err);
    }
}