var express = require('express');
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
// const client = require("redis").createClient();

import ApiInterceptor from './lib/api-interceptor';
import IpInterceptor from './lib/ip-interceptor';
import ResHerderInterceptor from './lib/req-header-interceptor';
import router from './routes'
const app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//IP网关拦截器
app.use(IpInterceptor());
//请求方法校验，解决跨域问题
app.use(ResHerderInterceptor());
//API签名校验
app.use(ApiInterceptor());
//进入业务层
router(app);


// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;