import type { Options } from 'rotating-file-stream';

export interface PinoRotatingFileStreamOptions extends Options {
    path: string;
}

const generator = (time: number | Date, index?: number) => {
    if (!time) {
        return 'server.log';
    }
    time = new Date(time);

    const month = String(time.getMonth() + 1).padStart(2, '0');
    const day = String(time.getDate()).padStart(2, '0');
    if (index) {
        const count = String(index).padStart(3, '0');
        return `server.${time.getFullYear()}${month}${day}-${count}.log`;
    }
    return `server.${time.getFullYear()}${month}${day}.log`;
};

export default (options: PinoRotatingFileStreamOptions) => {
    const { createStream } = require('rotating-file-stream') as typeof import('rotating-file-stream');

    const { path } = options;
    return createStream(generator, {
        size: '50M',
        maxSize: '500M',
        interval: '1d',
        path,
    });
};