import {
  getGatewayTransport,
  getStatusDataGenerator,
} from "@t9tlai/host-runner-utils";
import express, { RequestHandler } from "express";
import expressWinston from "express-winston";
import winston from "winston";
import * as Transport from "winston-transport";
import thisPackage from "../utils/thisPackage";

console.log(thisPackage.name);
console.log(thisPackage.version);

const httpTransport = getGatewayTransport();
const getStatusData = getStatusDataGenerator(thisPackage);

/* eslint-disable no-param-reassign */
const appendAboutData = winston.format((info) => {
  info.about = getStatusData();

  return info;
});

const format = winston.format.combine(
  appendAboutData(),
  winston.format.simple(),
  winston.format.splat(),
  winston.format.timestamp(),
  winston.format.json()
);

const transports: Transport[] = httpTransport ? [httpTransport] : [];

if (process.env.NODE_ENV !== "production") {
  transports.push(
    new winston.transports.Console({
      format: winston.format.colorize(),
    })
  );
}

export function setupWinston(app: express.Application): void {
  app.use(
    expressWinston.logger({
      transports,
      format,
      meta: true,
      requestField: null,
      dynamicMeta: (req) => ({
        user: req.user,
        params: req.params,
        headers: { ...req.headers, authorization: undefined },
        httpVersion: req.httpVersion,
        method: req.method,
        originalUrl: req.originalUrl,
        query: req.query,
        url: req.url,
      }),
    })
  );
}

export const logger = winston.createLogger({
  transports,
  format,
});

export function winstonRequestLogger(): RequestHandler {
  return (req, _res, next) => {
    req.logger = logger;
    next();
  };
}