import * as winston from "winston";

const os = require("os");

const user = os.userInfo();
export const CHAT_LOG_FILE = `${user.homedir}/.cp-advisor/chat.log`;

export class Logger {
  private readonly instance: winston.Logger;

  public constructor() {
    const colorize = {
      levels: {
        info: 0,
        debug: 1,
        warning: 2,
        error: 3,
        prompt: 4,
        chat: 5
      },
      colors: {
        debug: "blue",
        info: "green",
        warning: "yellow",
        error: "red",
        prompt: "cyan",
        chat: "magenta"
      }
    };
    const isDebugMode = process.env.debuggable || false;

    winston.addColors(colorize.colors);
    const customizedFormat = winston.format.printf((args: any) => `${args.message}`);
    const format = winston.format.combine(customizedFormat, winston.format.colorize({ message: true }));
    const level = isDebugMode ? "debug" : "info";
    const transports = [
      new winston.transports.Console({ format })];

    this.instance = winston.createLogger({ level, levels: colorize.levels, format, transports });
  }

  public log(message: string) {
    this.instance.info(message);
  }

  public info(message: string) {

    this.instance.info(message);
  }

  public warn(message: string, ex?: any) {
    this.instance.warning(message);
  }

  public debug(message: string) {
    this.instance.debug(message);
  }

  public error(message: string, error: Error = new Error()) {
    this.instance.debug(`[error]${message} ${error ? error.stack : ""}`);
  }

  public chat(message: string) {
    this.instance.log("chat", message);
  }

  public prompt(message: string) {
    this.instance.prompt(message);
  }
}