dockge/backend/socket-handlers/terminal-socket-handler.ts

import { SocketHandler } from "../socket-handler.js";
import { DockgeServer } from "../dockge-server";
import { callbackError, checkLogin, DockgeSocket, ValidationError } from "../util-server";
import { log } from "../log";
import { InteractiveTerminal, MainTerminal, Terminal } from "../terminal";
import { Stack } from "../stack";

export class TerminalSocketHandler extends SocketHandler {
    create(socket : DockgeSocket, server : DockgeServer) {

        socket.on("terminalInput", async (terminalName : unknown, cmd : unknown, errorCallback) => {
            try {
                checkLogin(socket);

                if (typeof(terminalName) !== "string") {
                    throw new Error("Terminal name must be a string.");
                }

                if (typeof(cmd) !== "string") {
                    throw new Error("Command must be a string.");
                }

                let terminal = Terminal.getTerminal(terminalName);
                if (terminal instanceof InteractiveTerminal) {
                    //log.debug("terminalInput", "Terminal found, writing to terminal.");
                    terminal.write(cmd);
                } else {
                    throw new Error("Terminal not found or it is not a Interactive Terminal.");
                }
            } catch (e: any) {
                errorCallback({
                    ok: false,
                    msg: e.message,
                });
            }
        });

        // Main Terminal
        socket.on("mainTerminal", async (terminalName : unknown, callback) => {
            try {
                checkLogin(socket);

                // TODO: Reset the name here, force one main terminal for now
                terminalName = "console";

                if (typeof(terminalName) !== "string") {
                    throw new ValidationError("Terminal name must be a string.");
                }

                log.debug("deployStack", "Terminal name: " + terminalName);

                let terminal = Terminal.getTerminal(terminalName);

                if (!terminal) {
                    terminal = new MainTerminal(server, terminalName);
                    terminal.rows = 50;
                    log.debug("deployStack", "Terminal created");
                }

                terminal.join(socket);
                terminal.start();

                callback({
                    ok: true,
                });
            } catch (e) {
                callbackError(e, callback);
            }
        });

        // Interactive Terminal for containers
        socket.on("interactiveTerminal", async (stackName : unknown, serviceName : unknown, shell : unknown, callback) => {
            try {
                checkLogin(socket);

                if (typeof(stackName) !== "string") {
                    throw new ValidationError("Stack name must be a string.");
                }

                if (typeof(serviceName) !== "string") {
                    throw new ValidationError("Service name must be a string.");
                }

                if (typeof(shell) !== "string") {
                    throw new ValidationError("Shell must be a string.");
                }

                log.debug("interactiveTerminal", "Stack name: " + stackName);
                log.debug("interactiveTerminal", "Service name: " + serviceName);

                // Get stack
                const stack = Stack.getStack(server, stackName);
                stack.joinContainerTerminal(socket, serviceName, shell);

                callback({
                    ok: true,
                });
            } catch (e) {
                callbackError(e, callback);
            }
        });

        // Join Output Terminal
        socket.on("terminalJoin", async (terminalName : unknown, callback) => {
            if (typeof(callback) !== "function") {
                log.debug("console", "Callback is not a function.");
                return;
            }

            try {
                checkLogin(socket);
                if (typeof(terminalName) !== "string") {
                    throw new ValidationError("Terminal name must be a string.");
                }

                let buffer : string = Terminal.getTerminal(terminalName)?.getBuffer() ?? "";

                if (!buffer) {
                    log.debug("console", "No buffer found.");
                }

                callback({
                    ok: true,
                    buffer,
                });
            } catch (e) {
                callbackError(e, callback);
            }
        });

        // Close Terminal
        socket.on("terminalClose", async (terminalName : unknown, callback : unknown) => {

        });

        // TODO: Resize Terminal
        socket.on("terminalResize", async (rows : unknown) => {

        });
    }
}