var express = require('express');
var redis = require('redis');
var getRawBody = require('raw-body')

var client = redis.createClient();

// express style
var app = express.create();

app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.set('foo', 'bar');
app.set('redisClient', client);
app.use('/static', express.static(__dirname + '/assets'));
app.use(express.query());
app.use(express.cookieParser('webjs'));
app.use(express.session({ secret: 'webjs', maxAge: 5 * 60 * 1000 }));
app.use(express.compiler({ enable: [ 'less' ] }));
app.use(express.compress());
app.use(function(req, res, next) {
  getRawBody(req, {
    length: req.headers['content-length'],
    limit: '1mb',
    encoding: 'utf8'
  }, function (err, string) {
    if (err)
      return next(err)

    req.body = string
    next()
  })
})

app.get('/', function(req, res) {
  res.send('Hello World!');
});
app.get('/echo/:msg', function(req, res) {
  res.send(req.params.msg);
});
app.get('/view/:view', function(req, res) {
  res.render(req.params.view, {
    view: req.params.view
  });

  // /view/foo => render /views/foo.ejs
});
app.get('/get/:key': function(req, res, next) {
    app.get('redisClient').get(req.params.key, function(err, value) {
      if (err) {
        return next(err);
      }

      value = value || 'no such key';

      res.send(value);
    });
  }
});
app.put('/set/:key', function(req, res, next) {
  app.get('redisClient').set(req.params.key, req.body, function(err) {
    if (err) {
      return next(err);
    }

    res.send('OK');
  });
});
app.post('/incr/:key', function(req, res, next) {
  app.get('redisClient').incr(req.params.key, function(err, currValue) {
    if (err) {
      return next(err);
    }

    res.send(currValue);
  });
})
app.post('/append/:key', function(req, res, next) {
  app.get('redisClient').append(req.params.key, req.body, function(err, length) {
    if (err) {
      return next(err);
    }

    res.send(length);
  });
});
app.listen(8080);