import cors from '@koa/cors';
import Koa from 'koa';
import bodyParser from 'koa-bodyparser';
import compress from 'koa-compress';
import helmet from 'koa-helmet';
// lhx:feature-imports
import {logger} from './logger';
import {errorMiddleware} from './middlewares/error';
import {router} from './routes/index';

export function createApp(): Koa {
  const app = new Koa();

  app.use(async (ctx, next) => {
    const start = Date.now();
    await next();
    logger.info({method: ctx.method, url: ctx.url, status: ctx.status, ms: Date.now() - start}, 'req');
  });
  app.use(errorMiddleware);
  app.use(helmet());
  app.use(cors());
  app.use(compress());
  app.use(bodyParser());

  app.use(router.routes());
  app.use(router.allowedMethods());

  app.use(ctx => {
    ctx.status = 404;
    ctx.body = {error: 'not_found'};
  });

  return app;
}