freeCodeCamp/controllers/challenge.js

/*eslint-disable no-unused-vars */

/**
 * Created by nathanleniz on 5/15/15.
 * Copyright (c) 2015, Free Code Camp
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

var debug = require('debug')('freecc:cntr:courseware'),
    Challenge = require('./../models/Challenge'),
    User = require('./../models/User'),
    resources = require('./resources'),
    R = require('ramda'),
    moment = require('moment');

var challengeMapWithNames = resources.getChallengeMapWithNames();
var challengeMapWithIds = resources.getChallengeMapWithIds();

exports.showAllChallenges = function(req, res) {
  var completedList = [];
  if (req.user) {
    completedList = req.user.completedCoursewares.map(function (elem) {
      return elem._id;
    });
  }
  var noDuplicatedCoursewares = R.uniq(completedList);
  var data = {};
  data.coursewareList = resources.allCoursewareNames();
  data.completedList = noDuplicatedCoursewares;
  res.send(data);
};

exports.getStuff = function(req, res, next) {
  res.send({withNames: challengeMapWithNames, withIds: challengeMapWithIds});
};

exports.returnNextChallenge = function(req, res, next) {
  if (!req.user) {
   return res.redirect('../challenges/learn-how-free-code-camp-works');
  }
  var completed = req.user.completedChallenges.map(function (elem) {
    return elem._id;
  });

  req.user.uncompletedChallenges = resources.allChallengeIds()
    .filter(function (elem) {
      if (completed.indexOf(elem) === -1) {
        return elem;
      }
    });
  req.user.save();
  // find the user's current challenge and block
  // look in that block and find the index of their current challenge
  // if index + 1 <= block.challenges.length - 1
  // serve index + 1 challenge
  // otherwise increment block key and serve the first challenge in that block
  var nextChallengeName;
  var nextChallengeId;
  var nextChallengeBlock;

  var challengeId = req.user.currentChallenge.challengeId;
  var challengeBlock = req.user.currentChallenge.challengeBlock;
  debug('this is the user challenge block', challengeBlock);
  var indexOfChallenge = challengeMapWithIds[challengeBlock]
    .indexOf(challengeId);

  debug('Logging first two challenge blocks for sanity', challengeMapWithIds[0], challengeMapWithIds[1]);


  debug('these are the damn keys on challengeMapWithIds...', Object.keys(challengeMapWithIds));
  if (indexOfChallenge + 1
    < challengeMapWithIds[challengeBlock].length) {
    debug('advancing to next challange in current block');
    nextChallengeName =
      challengeMapWithNames[challengeBlock][indexOfChallenge + 1];
    nextChallengeId = challengeMapWithIds[challengeBlock][indexOfChallenge + 1];
    nextChallengeBlock = challengeBlock;
  } else if (typeof challengeMapWithIds[++challengeBlock] !== 'undefined') {
    debug('Advancing to next block');
    nextChallengeName = R.head(challengeMapWithNames[challengeBlock]);
    nextChallengeId = R.head(challengeMapWithNames[challengeBlock]);
    nextChallengeBlock = challengeBlock;
  } else {
    debug('completed all challenges');
    req.flash('errors', {
      msg: 'It looks like you have finished all of our challenges.' +
      ' Great job! Now on to helping nonprofits!'
    });
    nextChallengeName = R.head(challengeMapWithNames[0].challenges);
    nextChallengeId = R.head(challengeMapWithNames[0].challenges);
    nextChallengeBlock = 0;
  }
  req.user.currentChallenge = {
    challengeId: nextChallengeId,
    challengeName: nextChallengeName,
    challengeBlock: nextChallengeBlock
  };
  req.user.save();
  var nameString = nextChallengeName.trim()
    .toLowerCase()
    .replace(/[^\w\s]/g, '')
    .replace(/\s/g, '-')
  debug('this is the namestring we\'re going to look up', nameString);
  return res.redirect('../challenges/' + nameString);
};

exports.returnCurrentChallenge = function(req, res, next) {
  debug('these are the damn keys on challengeMapWithIds...', Object.keys(challengeMapWithIds));
  debug('sanity check', challengeMapWithIds[0], challengeMapWithIds[1]);
  if (!req.user) {
   return res.redirect('../challenges/learn-how-free-code-camp-works');
  }
  if (!req.user.currentChallenge) {
    req.user.currentChallenge = {};
    req.user.currentChallenge.challengeId = challengeMapWithIds['0'][0];
    req.user.currentChallenge.challengeName = challengeMapWithNames['0'][0];
    req.user.currentChallenge.challengeBlock = '0';
    req.user.save();
    return res.redirect('../challenges/learn-how-free-code-camp-works');
  }
  var nameString = req.user.currentChallenge.challengeName.trim()
    .toLowerCase()
    .replace(/[^\w\s]/g, '')
    .replace(/\s/g, '-');
  debug('this is the namestring we\'re going to look up', nameString);
  return res.redirect('../challenges/' + nameString);
};

exports.returnIndividualChallenge = function(req, res, next) {
  var dashedName = req.params.challengeName;

  var challengeName = dashedName.replace(/\-/g, ' ');
  debug('looking for %s', challengeName);

  Challenge.find({'name': new RegExp(challengeName, 'i')},
    function(err, challengeFromMongo) {
      if (err) {
        next(err);
      }
      // Handle not found
      if (challengeFromMongo.length < 1) {
        debug(challengeFromMongo);
        req.flash('errors', {
          msg: '404: We couldn\'t find a challenge with that name. ' +
          'Please double check the name.'
        });
        return res.redirect('/challenges');
      }
      var challenge = challengeFromMongo.pop();
      debug(challenge);

      // Redirect to full name if the user only entered a partial
      var dashedNameFull = challenge.name.toLowerCase().replace(/\s/g, '-');
      if (dashedNameFull !== dashedName) {
        return res.redirect('../challenges/' + dashedNameFull);
      }

      var challengeType = {
        0: function() {
          res.render('coursewares/showHTML', {
            title: challenge.name,
            dashedName: dashedName,
            name: challenge.name,
            brief: challenge.description[0],
            details: challenge.description.slice(1),
            tests: challenge.tests,
            challengeSeed: challenge.challengeSeed,
            verb: resources.randomVerb(),
            phrase: resources.randomPhrase(),
            compliment: resources.randomCompliment(),
            coursewareHash: challenge._id,
            environment: resources.whichEnvironment(),
            challengeType: challenge.challengeType
          });
        },

        1: function() {
          res.render('coursewares/showJS', {
            title: challenge.name,
            dashedName: dashedName,
            name: challenge.name,
            brief: challenge.description[0],
            details: challenge.description.slice(1),
            tests: challenge.tests,
            challengeSeed: challenge.challengeSeed,
            verb: resources.randomVerb(),
            phrase: resources.randomPhrase(),
            compliment: resources.randomCompliment(),
            coursewareHash: challenge._id,
            challengeType: challenge.challengeType
          });
        },

        2: function() {
          res.render('coursewares/showVideo', {
            title: challenge.name,
            dashedName: dashedName,
            name: challenge.name,
            details: challenge.description,
            tests: challenge.tests,
            video: challenge.challengeSeed[0],
            verb: resources.randomVerb(),
            phrase: resources.randomPhrase(),
            compliment: resources.randomCompliment(),
            coursewareHash: challenge._id,
            challengeType: challenge.challengeType
          });
        },

        3: function() {
          res.render('coursewares/showZiplineOrBasejump', {
            title: challenge.name,
            dashedName: dashedName,
            name: challenge.name,
            details: challenge.description,
            video: challenge.challengeSeed[0],
            verb: resources.randomVerb(),
            phrase: resources.randomPhrase(),
            compliment: resources.randomCompliment(),
            coursewareHash: challenge._id,
            challengeType: challenge.challengeType
          });
        },

        4: function() {
          res.render('coursewares/showZiplineOrBasejump', {
            title: challenge.name,
            dashedName: dashedName,
            name: challenge.name,
            details: challenge.description,
            video: challenge.challengeSeed[0],
            verb: resources.randomVerb(),
            phrase: resources.randomPhrase(),
            compliment: resources.randomCompliment(),
            coursewareHash: challenge._id,
            challengeType: challenge.challengeType
          });
        }
      };

      return challengeType[challenge.challengeType]();

    });
};

exports.completedBonfire = function(req, res, next) {

};

exports.completedChallenge = function (req, res, next) {

  var isCompletedDate = Math.round(+new Date());
  var challengeId = req.body.challengeInfo.challengeId;


  req.user.completedChallenges.push({
    _id: challengeId,
    completedDate: isCompletedDate,
    name: req.body.challengeInfo.challengeName,
    solution: null,
    githubLink: null,
    verified: true
  });
  var index = req.user.uncompletedChallenges.indexOf(challengeId);

  if (index > -1) {
    req.user.progressTimestamps.push(Date.now() || 0);
    req.user.uncompletedChallenges.splice(index, 1);
  }

  req.user.save(function (err, user) {
    if (err) {
      return next(err);
    }
    if (user) {
      res.sendStatus(200);
    }
  });
};

exports.completedZiplineOrBasejump = function (req, res, next) {
  debug('Inside controller for completed zipline or basejump with data %s',
    req.body.coursewareInfo);
  var isCompletedWith = req.body.coursewareInfo.completedWith || false;
  var isCompletedDate = Math.round(+new Date());
  var coursewareHash = req.body.coursewareInfo.coursewareHash;
  var solutionLink = req.body.coursewareInfo.publicURL;
  var githubLink = req.body.coursewareInfo.challengeType === '4'
    ? req.body.coursewareInfo.githubURL : true;
  if (!solutionLink || !githubLink) {
    req.flash('errors', {
      msg: 'You haven\'t supplied the necessary URLs for us to inspect ' +
      'your work.'
    });
    return res.sendStatus(403);
  }

  if (isCompletedWith) {
    var paired = User.find({'profile.username': isCompletedWith.toLowerCase()}).limit(1);
    paired.exec(function (err, pairedWithFromMongo) {
      if (err) {
        return next(err);
      } else {
        var index = req.user.uncompletedCoursewares.indexOf(coursewareHash);
        if (index > -1) {
          req.user.progressTimestamps.push(Date.now() || 0);
          req.user.uncompletedCoursewares.splice(index, 1);
        }
        var pairedWith = pairedWithFromMongo.pop();

        req.user.completedCoursewares.push({
          _id: coursewareHash,
          name: req.body.coursewareInfo.coursewareName,
          completedWith: pairedWith._id,
          completedDate: isCompletedDate,
          solution: solutionLink,
          githubLink: githubLink,
          verified: false
        });

        req.user.save(function (err, user) {
          if (err) {
            return next(err);
          }
          debug('this is the user object returned %s,' +
            ' this is the req.user._id %s, ' +
            'this is the pairedWith._id %s', user, req.user._id, pairedWith._id);
          debug(req.user._id.toString() === pairedWith._id.toString());
          if (req.user._id.toString() === pairedWith._id.toString()) {
            return res.sendStatus(200);
          }
          index = pairedWith.uncompletedCoursewares.indexOf(coursewareHash);
          if (index > -1) {
            pairedWith.progressTimestamps.push(Date.now() || 0);
            pairedWith.uncompletedCoursewares.splice(index, 1);

          }

          pairedWith.completedCoursewares.push({
            _id: coursewareHash,
            name: req.body.coursewareInfo.coursewareName,
            completedWith: req.user._id,
            completedDate: isCompletedDate,
            solution: solutionLink,
            githubLink: githubLink,
            verified: false
          });
          pairedWith.save(function (err, paired) {
            if (err) {
              return next(err);
            }
            if (user && paired) {
              return res.sendStatus(200);
            }
          });
        });
      }
    });
  } else {

    req.user.completedCoursewares.push({
      _id: coursewareHash,
      name: req.body.coursewareInfo.coursewareName,
      completedWith: null,
      completedDate: isCompletedDate,
      solution: solutionLink,
      githubLink: githubLink,
      verified: false
    });

    var index = req.user.uncompletedCoursewares.indexOf(coursewareHash);
    if (index > -1) {
      req.user.progressTimestamps.push(Date.now() || 0);
      req.user.uncompletedCoursewares.splice(index, 1);
    }

    req.user.save(function (err, user) {
      if (err) {
        return next(err);
      }
      if (user) {
        return res.sendStatus(200);
      }
    });
  }
};

/*
challengeBlock {
  0: {
    "name": "basic_html",
    "challenges: []
  },
  1: {
    "name": "basic_css",
    "challenges": [],
  }
}

currentChallenge{
  "challengeBlock": number,
  "challengeId": _id,
  "challengeName": string
}
 */