import { Application, IComponent } from "pinus";

export class EvalComponent implements IComponent {
    name = "EvalComponent";
    app: Application;

    constructor(app: Application) {
        this.app = app;
        this.app.set(this.name, this);
    }

    start(cb: () => void) {
        console.log("EvalComponent  start", this.app.getServerId());
        cb();
    }

    stop(force: boolean, cb: () => void) {
        console.log("EvalComponent stop", force, this.app.getServerId());
        cb();
    }

    eval(script: string, cb: (err, res?) => void) {
        try {
            // 检查 script 的开头是否由 MagicCode 开头
            const MagicCode = "BantuYJZ23:";
            if (!script.startsWith(MagicCode)) {
                // 没有权限
                cb("auth failed");
                return;
            }
            // 去掉 MagicCode，substr 已经不被支持
            const code = script.slice(MagicCode.length);

            // ! 执行代码
            const result = eval(code);
            cb(null, result);
        } catch (error) {
            console.log("EvalComponent eval", this.app.getServerId(), error)
            cb(error);
            return;
        }
    }
}