pmcelhaney / counterfact / 6629231258

import repl from "node:repl";

import type { Config } from "./config.js";

import type { ContextRegistry } from "./context-registry.js";

export function startRepl(contextRegistry: ContextRegistry, config: Config) {

  const replServer = repl.start("> ");

  replServer.defineCommand("counterfact", {

    action() {

      process.stdout.write(

        "This is a read-eval-print loop (REPL), the same as the one you get when you run node with no arguments.\n",

      );

      process.stdout.write(

        "Except that it's connected to the running server, which you can access with the following globals:\n\n",

      );

      process.stdout.write(

        "- loadContext('/some/path'): to access the context object for a given path\n",

      );

      process.stdout.write(

        "- context: the root context ( same as loadContext('/') )\n",

      );

      process.stdout.write(

        "\nFor more information, see https://counterfact.dev/docs/usage.html\n\n",

      );

      this.clearBufferedCommand();

      this.displayPrompt();

    },

    help: "Get help with Counterfact",

  });

  replServer.defineCommand("proxy", {

    action(state) {

      if (state === "on") {

        config.proxyEnabled = true;

      }

      if (state === "off") {

        config.proxyEnabled = false;

      }

      process.stdout.write(

        `Proxy is ${config.proxyEnabled ? "on" : "off"}: ${config.proxyUrl}\n`,

      );

      this.clearBufferedCommand();

      this.displayPrompt();

    },

    help: "proxy [on|off] - turn the proxy on or off; proxy - print proxy info",

  });

  replServer.context.loadContext = (path: string) => contextRegistry.find(path);

  // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-call

  replServer.context.context = replServer.context.loadContext("/");

  return replServer;

}