// Generated by CoffeeScript 1.6.3
/*

Request Handler
============
> The request handler (surprisingly) handles requests made through HTTP to
> the [HTTP Listener](http-listener.html). It will handle user requests for
> pages as well as POST requests such as user login, module storing, event
> invocation and also admin commands.
*/


(function() {
  var answerHandler, crypto, db, dirHandlers, exports, fs, getHandlerPath, getRemoteScripts, getScript, getTemplate, mustache, path, qs, renderPage,
    _this = this;

  db = require('./persistence');

  fs = require('fs');

  path = require('path');

  qs = require('querystring');

  mustache = require('mustache');

  crypto = require('crypto-js');

  dirHandlers = path.resolve(__dirname, '..', 'webpages', 'handlers');

  exports = module.exports = function(args) {
    var user, users, _i, _len;
    _this.log = args.logger;
    _this.userRequestHandler = args['request-service'];
    _this.objAdminCmds = {
      shutdown: function(args, answerHandler) {
        answerHandler.answerSuccess('Shutting down... BYE!');
        return setTimeout(args['shutdown-function'], 500);
      }
    };
    db(args);
    users = JSON.parse(fs.readFileSync(path.resolve(__dirname, '..', 'config', 'users.json')));
    for (_i = 0, _len = users.length; _i < _len; _i++) {
      user = users[_i];
      db.storeUser(user);
    }
    return module.exports;
  };

  /*
  Handles possible events that were posted to this server and pushes them into the
  event queue.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleEvent( *req, resp* )
  */


  exports.handleEvent = function(req, resp) {
    var body;
    body = '';
    req.on('data', function(data) {
      return body += data;
    });
    return req.on('end', function() {
      var obj;
      obj = qs.parse(body);
      if (obj && obj.event && obj.eventid) {
        resp.send('Thank you for the event: ' + obj.event + ' (' + obj.eventid + ')!');
        return db.pushEvent(obj);
      } else {
        return resp.send(400, 'Your event was missing important parameters!');
      }
    });
  };

  /*
  Associates the user object with the session if login is successful.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleLogin( *req, resp* )
  */


  exports.handleLogin = function(req, resp) {
    var body;
    body = '';
    req.on('data', function(data) {
      return body += data;
    });
    return req.on('end', function() {
      var obj;
      obj = qs.parse(body);
      return db.loginUser(obj.username, obj.password, function(err, usr) {
        if (err) {
          _this.log.warn("RH | AUTH-UH-OH ( " + obj.username + " ): " + err.message);
        } else {
          req.session.user = usr;
        }
        if (req.session.user) {
          return resp.send('OK!');
        } else {
          return resp.send(401, 'NO!');
        }
      });
    });
  };

  /*
  A post request retrieved on this handler causes the user object to be
  purged from the session, thus the user will be logged out.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleLogout( *req, resp* )
  */


  exports.handleLogout = function(req, resp) {
    if (req.session) {
      req.session.user = null;
      return resp.send('Bye!');
    }
  };

  /*
  Resolves the path to a handler webpage.
  
  @private getHandlerPath( *name* )
  @param {String} name
  */


  getHandlerPath = function(name) {
    return path.join(dirHandlers, name + '.html');
  };

  /*
  Fetches a template.
  
  @private getTemplate( *name* )
  @param {String} name
  */


  getTemplate = function(name) {
    var pth;
    pth = path.join(dirHandlers, 'templates', name + '.html');
    return fs.readFileSync(pth, 'utf8');
  };

  /*
  Fetches a script.
  
  @private getScript( *name* )
  @param {String} name
  */


  getScript = function(name) {
    var pth;
    pth = path.join(dirHandlers, 'js', name + '.js');
    return fs.readFileSync(pth, 'utf8');
  };

  /*
  Fetches remote scripts snippets.
  
  @private getRemoteScripts( *name* )
  @param {String} name
  */


  getRemoteScripts = function(name) {
    var pth;
    pth = path.join(dirHandlers, 'remote-scripts', name + '.html');
    return fs.readFileSync(pth, 'utf8');
  };

  /*
  Renders a page, with helps of mustache, depending on the user session and returns it.
  
  @private renderPage( *name, sess, msg* )
  @param {String} name
  @param {Object} sess
  @param {Object} msg
  */


  renderPage = function(name, req, resp, msg) {
    var code, content, data, err, menubar, pathSkel, remote_scripts, script, skeleton, view;
    pathSkel = path.join(dirHandlers, 'skeleton.html');
    skeleton = fs.readFileSync(pathSkel, 'utf8');
    code = 200;
    data = {
      message: msg
    };
    try {
      script = getScript(name);
    } catch (_error) {}
    try {
      remote_scripts = getRemoteScripts(name);
    } catch (_error) {}
    try {
      content = getTemplate(name);
    } catch (_error) {
      err = _error;
      content = getTemplate('error');
      script = getScript('error');
      code = 404;
      data = {
        message: 'Invalid Page!'
      };
    }
    content = mustache.render(content, data);
    if (req.session.user) {
      menubar = getTemplate('menubar');
    }
    view = {
      user: req.session.user,
      content: content,
      script: script,
      remote_scripts: remote_scripts,
      menubar: menubar
    };
    return resp.send(code, mustache.render(skeleton, view));
  };

  /*
  Present the desired forge page to the user.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleForge( *req, resp* )
  */


  exports.handleForge = function(req, resp) {
    var page;
    page = req.query.page;
    if (!req.session.user) {
      page = 'login';
    }
    return renderPage(page, req, resp);
  };

  /*
  Handles the user command requests.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleUser( *req, resp* )
  */


  exports.handleUserCommand = function(req, resp) {
    var body;
    if (!req.session || !req.session.user) {
      return resp.send(401, 'Login first!');
    } else {
      body = '';
      req.on('data', function(data) {
        return body += data;
      });
      return req.on('end', function() {
        var obj;
        obj = qs.parse(body);
        return _this.userRequestHandler(req.session.user, obj, function(err, obj) {
          if (err) {
            return resp.send(404, 'Rethink your request!');
          } else {
            return resp.send(obj);
          }
        });
      });
    }
  };

  /*
  Present the admin console to the user if he's allowed to see it.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleForge( *req, resp* )
  */


  exports.handleAdmin = function(req, resp) {
    var msg, page;
    if (!req.session.user) {
      page = 'login';
    } else if (req.session.user.isAdmin !== "true") {
      page = 'login';
      msg = 'You need to be admin!';
    } else {
      page = 'admin';
    }
    return renderPage(page, req, resp, msg);
  };

  /*
  Handles the admin command requests.
  
  *Requires
  the [request](http://nodejs.org/api/http.html#http_class_http_clientrequest)
  and [response](http://nodejs.org/api/http.html#http_class_http_serverresponse)
  objects.*
  
  @public handleAdminCommand( *req, resp* )
  */


  exports.handleAdminCommand = function(req, resp) {
    var q, _base, _name;
    if (req.session && req.session.user) {
      if (req.session.user.isAdmin === "true") {
        q = req.query;
        _this.log.info('RH | Received admin request: ' + req.originalUrl);
        if (q.cmd) {
          return typeof (_base = _this.objAdminCmds)[_name = q.cmd] === "function" ? _base[_name](q, answerHandler(req, resp, true)) : void 0;
        } else {
          return resp.send(404, 'Command unknown!');
        }
      } else {
        return resp.send(renderPage('unauthorized', req.session));
      }
    } else {
      return resp.sendfile(getHandlerPath('login'));
    }
  };

  answerHandler = function(req, resp, ntbr) {
    var hasBeenAnswered, needsToBeRendered, request, response, ret;
    request = req;
    response = resp;
    needsToBeRendered = ntbr;
    hasBeenAnswered = false;
    ret = {
      answerSuccess: function(msg) {
        if (!hasBeenAnswered) {
          if (needsToBeRendered) {
            response.send(renderPage('command_answer', request.session, msg));
          } else {
            response.send(msg);
          }
        }
        return hasBeenAnswered = true;
      },
      answerError: function(msg) {
        if (!hasBeenAnswered) {
          if (needsToBeRendered) {
            response.send(400, renderPage('error', request.session, msg));
          } else {
            response.send(400, msg);
          }
        }
        return hasBeenAnswered = true;
      },
      isAnswered: function() {
        return hasBeenAnswered;
      }
    };
    setTimeout(function() {
      return ret.answerError('Strange... maybe try again?');
    }, 5000);
    return ret;
  };

}).call(this);