var hashish = require('hashish');
var fs = require('fs');
var findit = require('findit');
var path = require('path');
var http = require('http');
var net = require('net');
var assert = require('assert');

var common = require('../common');
var formidable = common.formidable;

var server = http.createServer();
server.listen(common.port, findFixtures);

function findFixtures() {
  var fixtures = [];
  findit
    .sync(common.dir.fixture + '/js')
    .forEach(function(jsPath) {
      if (!/\.js$/.test(jsPath)) return;

      var group = path.basename(jsPath, '.js');
      hashish.forEach(require(jsPath), function(fixture, name) {
        fixtures.push({
          name    : group + '/' + name,
          fixture : fixture,
        });
      });
    });

  testNext(fixtures);
}

function testNext(fixtures) {
  var fixture = fixtures.shift();
  if (!fixture) return server.close();

  var name    = fixture.name;
  var fixture = fixture.fixture;

  uploadFixture(name, function(err, parts) {
    if (err) throw err;

    fixture.forEach(function(expectedPart, i) {
      var parsedPart = parts[i];
      assert.equal(parsedPart.type, expectedPart.type);
      assert.equal(parsedPart.name, expectedPart.name);

      if (parsedPart.type === 'file') {
        var file = parsedPart.value;
        assert.equal(file.name, expectedPart.filename);
        if(expectedPart.sha1) assert.equal(file.hash, expectedPart.sha1);
      }
    });

    testNext(fixtures);
  });
};

function uploadFixture(name, cb) {
  server.once('request', function(req, res) {
    var form = new formidable.IncomingForm();
    form.uploadDir = common.dir.tmp;
    form.hash = "sha1";
    form.parse(req);

    function callback() {
      var realCallback = cb;
      cb = function() {};
      realCallback.apply(null, arguments);
    }

    var parts = [];
    form
      .on('error', callback)
      .on('fileBegin', function(name, value) {
        parts.push({type: 'file', name: name, value: value});
      })
      .on('field', function(name, value) {
        parts.push({type: 'field', name: name, value: value});
      })
      .on('end', function() {
        res.end('OK');
        callback(null, parts);
      });
  });

  var socket = net.createConnection(common.port);
  var file = fs.createReadStream(common.dir.fixture + '/http/' + name);

  file.pipe(socket, {end: false});
  socket.on('data', function () {
    socket.end();
  });

}