import { dirname, join } from "path";
import { mkdir, open, readFile } from "fs/promises"

export namespace OutputHandler {
    export const LogCachePath = join(
        process.cwd(),
        "cache",
        "log",
    );
    export const ErrorLogPath = join(LogCachePath, "error.log" );
    export function getErrorOutput(...args: any[]) {
        const timestamp = new Date().toISOString();

        const message = args
            .map(arg => {
                if (arg instanceof Error) {
                    return `${arg.name}: ${arg.message}\n${arg.stack}`;
                }
                if (typeof arg === 'object') {
                    return JSON.stringify(arg);
                }
                    return String(arg);
                })
            .join(' ');


        return `[${timestamp}] ${message}`;
    }
    export async function errorLog(...args: any[]): Promise<void> {
        const output = getErrorOutput(...args);
        console.log(output);

        await mkdir(dirname(ErrorLogPath), { recursive: true });

        const fileHandle = await open(ErrorLogPath, "a");
        fileHandle.write(output + "\n");
        fileHandle.close();
    }
    export async function getErrorLog(): Promise<string> {
        return (await readFile(ErrorLogPath)).toString();
    }
}