var playwithsix = require('playwithsix');

var manager = require('./../manager');

function removeDuplicates(mods) {
  return mods.reduce(function(a,b){
    if (a.indexOf(b) < 0 ) a.push(b);
    return a;
  },[]);
}

function resolveMods(server, cb) {
  playwithsix.resolveDependencies(server.mods, function (err, mods) {
    if (!err && mods) {
      server.mods = removeDuplicates(server.mods.concat(mods));
      manager.save();
    }

    cb(err);
  });
}

exports.index = function (req, res){
  var servers = [];

  manager.getServers().forEach(function (server) {
    servers.push({
      id: server.id,
      title: server.title,
      port: server.port,
      mods: server.mods,
      pid: server.pid,
    });
  });

  res.send(servers);
};

exports.create = function (req, res){
  var server = manager.addServer(req.body);
  if (server.mods.length > 0) {
    resolveMods(server, function(err) {
      res.send(server);
    });
  } else {
    res.send(server);
  }
};

exports.show = function (req, res){
  var server = manager.getServer(req.params.server);
  res.send(server);
};

exports.update = function(req, res){
  var server = manager.getServer(req.params.server);
  server.update(req.body);
  manager.save();

  if (server.mods.length > 0) {
    resolveMods(server, function(err) {
      res.send(server);
    });
  } else {
    res.send(server);
  }
};

exports.destroy = function(req, res){
  var server = manager.removeServer(req.params.server);
  res.send(server);
};

exports.start = function (req, res){
  var server = manager.getServer(req.params.server);
  server.start();
  res.send({status:"ok", pid: server.pid});
};

exports.stop = function (req, res){
  var server = manager.getServer(req.params.server);
  server.stop(function () {
    if (!server.pid) {
      res.send({status: true, pid: server.pid});
    } else {
      res.send({status: false, pid: server.pid});
    }
  });
};