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index.js
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index.js
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// Work with Curses collection in Mongo.
var mongoose = require('mongoose');
var cursePurse = require('./models/curse');
var async = require('async');
module.exports = {
// @param {mixed} db Mongoose connection object or new url connection string
// @param {callback} cb Callback method (err, boolean)
dbConnect: function (db, cb) {
if (typeof db === 'object') {
return db; // just passing mongoose object into cursePurse, no new connection
} else if (typeof db === 'string') {
mongoose.connect(db, function (err) {
if (err) {
return cb(err, false);
} else {
return cb(err, true);
}
});
}
},
// @param {string} wordText Text to add to cursed words
// @param {callback} cb callback method
addCurse: function (newCurseText, cb) {
newCurseText = newCurseText.trim();
// replace internal multiple spaces with one
newCurseText = newCurseText.replace(/\s\s+/g, ' ');
// escape special chars http://stackoverflow.com/a/17493954
var strEsc = newCurseText.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
var str = new RegExp('^' + strEsc + '$', 'i');
cursePurse.findOne({curse: str, ban: true}, function (err, res) {
if (err) {
return cb(err, false);
} else if (res == null) {
var curseWord = new cursePurse();
curseWord.curse = newCurseText;
curseWord.save(function (err, res) {
if (err) {
return cb(err, false);
} else {
return cb(err, res);
}
});
} else {
return cb(err, res);
}
});
},
// @param {callback} cb callback method
getCurseList: function (cb) {
cursePurse.find(function (err, res) {
if (err) {
return cb(err, false);
} else {
return cb(err, res);
}
});
},
// search for a word or phrase in db, return false if not a banned word
// @param {callback} cb callback method
// @return {boolean} bool true if word is found and Mongo search not null
isCurse: function (curseWord, cb) {
// loop through each word in phrase to check for bad words
// using async lib, this will check each item before returning final result
async.each(curseWord.split(/\s+|_+|-+|\++/g), function(item, callback) {
var str = new RegExp('^' + item + '$', 'i');
cursePurse.findOne({curse: str, ban: true}, function (err, res) {
if (err || (res !== null)) {
callback(true); // it's a curse!
} else {
callback(false); // clean
}
});
}, function(err){
if (err) {
return cb(err, true); // it's a curse!
} else {
return cb(err, false); // clean
}
});
},
// Loop through passed array and send each addCurse
// @param {array} curseList Array of curses to add
// @return {object} err, res object returned without callback method
importCurses: function (curseList, cb) {
// format curseArr based on typeof param
if(typeof curseList == 'string') {
var curseArr = curseList.split(",");
} else {
var curseArr = JSON.parse(JSON.stringify(curseList));
}
async.map(curseArr, this.addCurse, function (err, res) {
return cb(err, res);
});
},
// @param {callback} cb Callback method
getCurseCount: function (cb) {
cursePurse.count(function (err, res) {
if (err) {
return cb(err, false);
} else {
return cb(err, res);
}
});
},
// Update a curse by id
// @param {object} curseId Curse ID to update
// @param {array} updateData Array of fields to update {curse: 'word', ban: true/false}
// @param {callback} cb Callback method
updateCurseById: function (curseId, updateData, cb) {
cursePurse.findByIdAndUpdate(curseId, updateData, function (err) {
if (err) {
return cb(err, false);
} else {
return cb(err, true);
}
});
},
// search for a word in db, return object
// @param {string} curse Curse word to find
// @param {callback} cb Callback method
getCurse: function (curse, cb) {
var curseNoCase = new RegExp('^' + curse + '$', 'i');
cursePurse.find({curse: curseNoCase}, function (err, res) {
if (err) {
return cb(err, false);
} else {
return cb(err, res);
}
});
},
// @param {string} curseId Mongo ID string of curse
// @param {callback} cb Callback method
getCurseById: function (curseId, cb) {
cursePurse.findById(curseId, function (err, res) {
if (err) {
return cb(err, false);
} else {
return cb(err, res);
}
});
},
// @param {string} curseId Curse ID to remove.
// @param {callback} cb Callback method
// @return {boolean} Return true if curse removed.
deleteCurseById: function (curseId, cb) {
cursePurse.remove({
_id: curseId
}, function (err) {
if (err) {
return cb(err, false);
} else {
return cb(err, true);
}
});
},
// @param {callback} cb Callback method
// @return {boolean} Return true if all curses removed.
deleteAllCurses: function (cb) {
cursePurse.remove({}, function (err) {
if (err) {
return cb(err, false);
} else {
return cb(err, true);
}
});
},
// @param {callback} cb Callback method
// @return {boolean} Return true if all curses removed.
deleteCurseDatabase: function (dbUrl, cb) {
mongoose.connection.db.dropDatabase(function (err) {
if (err) {
return cb(err, false);
} else {
return cb(err, true);
}
});
}
};