var Express = require('express');
var Router = Express.Router();
var EventEmitter = require('events');
var RoleModel = require('../models/role');
var Token = require('../modules/token');

function updateRole (req, res, next) {
  Token.verifyThen(req.get('authorization'), 'super', (err, decoded) => {
    if (err) {
      res.status(403).json({ message: 'User not authorized to perform this action.', err: err });
      return;
    } 

    var RoleEvents = new EventEmitter();  
    var id = req.params.id;
    var data = req.body;

    RoleEvents.once('updateRole', (err, result) => {
      if (err) {
        res.status(500).json({message: 'Could not update role id ' + id, err: err});
      }

      if (result) {
        res.status(200).json(result);
      }
    });

    RoleModel.updateRole(RoleEvents, id, data);
  });
}

Router.route('/')
  .post((req, res, next) => {
    Token.verifyThen(req.get('authorization'), 'super', (err, decoded) => {
      if (err) {
        res.status(403).json({ message: 'User not authorized to perform this action.', err: err });
        return;
      } 

      var RoleEvents = new EventEmitter();
      var role = req.body;

      RoleEvents.once('createRole', (err, result) => {
        if (err) {
          res.status(500).json({ message: 'Could not create role', err: err });
        }

        if (result) {
          res.status(200).json(result);
        }
      });

      RoleModel.createRole(RoleEvents, role);
    });
  });

Router.route('/search/:find?')
  .get((req, res, next) => {
    Token.verifyThen(req.get('authorization'), 'super', (err, decoded) => {
      if (err) {
        res.status(403).json({ message: 'User not authorized to perform this action.', err: err });
        return;
      } 

      var RoleEvents = new EventEmitter();

      // Process parameters
      var find = req.params.find ? decodeURIComponent(req.params.find) : false;
    
      if (find) {
        find = {
          'name': new RegExp(find, 'i')
        };
      }
    
      // Setup query object
      var query = {
        find: find || (req.query.find ? JSON.parse(decodeURIComponent(req.query.find)) : {}),
        select: req.query.select ? decodeURIComponent(req.query.select) : null,
        options: {
          limit: req.query.limit ? parseInt(req.query.limit) : 0,
          skip: req.query.ski ? parseInt(req.query.skip) : 0,
          sort: req.query.sort ? JSON.parse(decodeURIComponent(req.query.sort)) : { 'value': 1 }
        }
      };
    
      RoleEvents.once('getRoles', (err, result) => {
        if (err) {
          res.status(500).json({ message: 'There was an error performing the role search', err: err });
        }
      
        if (result) {
          res.status(200).json(result);
        }		
      });

      RoleModel.getRoles(RoleEvents, query);
    });
  });
  
Router.route('/:id?')
	.get( (req, res, next) => {
    Token.verifyThen(req.get('authorization'), 'view', (err, decoded) => {
      if (err) {
        res.status(403).json({ message: 'User not authorized to perform this action.', err: err });
        return;
      } 
  
      var RoleEvents = new EventEmitter();
      var id = req.params.id || false;
      var method = id ? 'getRole' : 'getRoles';

      RoleEvents.once(method, (err, result) => {
        if (err) {
          res.status(500).json({ message: 'Could not get role' + (id ? '' : 's'), err: err });
        }
      
        if (result) {
          res.status(200).json(result);
        }		
      });

      RoleModel[method](RoleEvents, id || null);
    });
	})
	.put( updateRole )
	.patch( updateRole )
	.delete( (req, res, next) => {
    Token.verifyThen(req.get('authorization'), 'super', (err, decoded) => {
      if (err) {
        res.status(403).json({ message: 'User not authorized to perform this action.', err: err });
        return;
      } 
  
      var RoleEvents = new EventEmitter();  
      var id = req.params.id;

      RoleEvents.once('deleteRole', (err, result) => {
        if (err) {
          res.status(500).json({message: 'Could not delete role id ' + id, err: err});
        }

        if (result) {
          res.status(204).json({});
        }
      });

      RoleModel.deleteRole(RoleEvents, id);
    });
	});

module.exports = Router;