function mo() {
    this.variabler = {};
    this.tabel = {};
    this.tabel_navn = "";
    this.regler = [];
    this._internal_step_counter = 0;
    this.funcs = {};
}

mo.prototype.addVariabelSet = function(navn, arr) {
    this.variabler[navn] = arr;
    return this;
}
mo.prototype.addVariableTable = function(navn, arr) {
    this.tabel[navn] = arr;
    this.tabel_navn = navn;
    return this;
}

mo.prototype.addClause = function() {
    var args = Array.prototype.slice.apply(arguments, []);
    this.regler.push(args.shift());
    return this;
}
mo.prototype.addFunction = function(name,func) {
    this.funcs[name] = func;
    return this;
}

/*mo.prototype.randoma = function(tabl) {
    var ll = this.tabel[tabl].length,
        l = 0;
    var r = [];
    var taken = {}
    for (var navn in this.variabler) {
        taken[navn] = {}
    }
    while (l < ll) {
        var o = {}
        o[tabl] = this.tabel[tabl][l];
        for (var navn in this.variabler) {

            var m = this.variabler[navn][Math.floor(Math.random() * this.variabler[navn].length)];
            
            while (taken[navn][m]) {
                m = this.variabler[navn][Math.floor(Math.random() * this.variabler[navn].length)];
                this._internal_step_counter++;
            }
            taken[navn][m] = 1;
            o[navn] = m
        }
        r.push(o);
        l++
    }
    return r;
}*/
mo.prototype.buildBase = function() {
    var tabl = this.tabel_navn;
    var ll = this.tabel[tabl].length,
        l = 0;
    var r = [];
    var taken = {}
    for (var navn in this.variabler) {
        taken[navn] = {}
    }
    while (l < ll) {
        var o = {}

        o[tabl] = this.tabel[tabl][l];
        
        for (var navn in this.variabler) {
            

            var m = this.variabler[navn][l];
            
           /* while (taken[navn][m]) {
                m = this.variabler[navn][Math.floor(Math.random() * this.variabler[navn].length)];
                this._internal_step_counter++;
            }*/

//            taken[navn][m] = 1;
            o[navn] = m
            
        }

        r.push(o);
        o._sure = [];
        l++
    }



    return r;
}
function rra(w){
return function(a){
    return a!==w
}    
}

mo.prototype.solve = function() {
    var current = this.buildBase()
    var tabl = this.tabel_navn;
    this.regler.map(function(rule){
        if(rule[tabl]){
            var ruleTarget = current.filter(function(a){ return a[tabl] === rule[tabl]}).shift();
            Object.keys(rule).filter(rra(tabl)).map(function(prop){
                var currentHolder = current.filter(function(a){ return a[prop]===rule[prop]}).shift();
                currentHolder[prop] = ruleTarget[prop]
                ruleTarget[prop] = rule[prop];
                ruleTarget._sure.push(prop)
            })
        }
    })

    var rep = this.regler.filter(function(rule){ return !rule[tabl] })

    //this.randoma("House");

    var sat = false;
    var ii = 0;
  

    while (!sat && ii < 100000) {
        ii++


                

//        console.log(this.regler.length);

        /*        var ffs = this.regler.map(function(reg) {
            var t = false;
            try {
                t = eval(reg);
            } catch (e) {
                // console.log("EE",e);
            }
            return t;
        })
        var longa = ffs.filter(function(a) {
            return a === true
        }).length;
        if(longa >= longest){
            longest = longa;
            ffou = current; 
        }
*/

        /*        if (longa === ffs.length) {
            sat = true;
        } else {
           current = this.randoma("House");
        }
*/
        if (ii % 100000 === 0) {
            console.log(ii);

        }


    }


    //    console.log(longest);

    //        console.log("TEST",t);


    //    console.log(current);

    //  console.log(this.regler);

    if (sat) {
        console.log("Found Solution:", current);

    }

   console.log(current);
}


mo.prototype.stats = function() {
    console.log("steps ", this._internal_step_counter)
    console.log(this);
}

var t = new mo()
    .addVariabelSet("Color", ["Green","Red", "White", "Yellow", "Blue" ])
    .addVariabelSet("Nationality", ["Norwegian", "Dane", "Swede", "Englishman", "German"])
    .addVariabelSet("Smokes", ["Prince", "Blend", "Dunhill", "BlueMasters", "PallMall"])
    .addVariabelSet("Drinks", ["Water", "Bier", "Milk", "Tea", "Coffee"])
    .addVariabelSet("Animals", ["Dogs", "Birds", "Cat", "Horses", "Fish"])
    .addVariableTable("House", [1, 2, 3, 4, 5])
    .addFunction("Neighbor", function() {})
    .addFunction("Neighbor_Before", function() {})
    .addFunction("Neighbor_After", function() {})
    .addClause({
        "Nationality": "Norwegian",
        "House": 1
    })
    .addClause({
        "Drinks": "Milk",
        "House": 3
    })
    .addClause({
        "Nationality": "Norwegian",
        "Neighbor": {
            "Color": "Blue"
        }
    })
    .addClause({
        "Nationality": "Englishman",
        "Color": "Red"
    })
    .addClause({
        "Smokes": "Blend",
        "Neighbor": {
            "Drinks": "Water"
        }
    })
    .addClause({
        "Nationality": "Swede",
        "Animals": "Dogs"
    })
    .addClause({
        "Nationality": "Dane",
        "Drinks": "Tea"
    })
    .addClause({
        "Color": "Green",
        "Neighbor_Before": {
            "Color": "White"
        }
    })
    .addClause({
        "Color": "Green",
        "Drinks": "Coffee"
    })
    .addClause({
        "Smokes": "PallMall",
        "Animals": "Birds"
    })
    .addClause({
        "Color": "Yellow",
        "Smokes": "Dunhill"
    })
    .addClause({
        "Smokes": "Blend",
        "Neighbor": {
            "Animals": "Cats"
        }
    })
    .addClause({
        "Animals": "Horses",
        "Neighbor": {
            "Smokes": "Dunhill"
        }
    })
    .addClause({
        "Smokes": "BlueMasters",
        "Drinks": "Bier"
    })
    .addClause({
        "Nationality": "German",
        "Smokes": "Prince"
    })
    
 
t.solve();


/*
    The Englishman lives in the red house.<br>
    The Swede keeps dogs.<br>
    The Dane drinks tea.<br>
    The green house is just to the left of the white one.<br>
    The owner of the green house drinks coffee.<br>
    The Pall Mall smoker keeps birds.<br>
    The owner of the yellow house smokes Dunhills.<br>
    The man in the center house drinks milk.<br>
    The Norwegian lives in the first house.<br>
    The Blend smoker has a neighbor who keeps cats.<br>
    The man who smokes Blue Masters drinks bier.<br>
    The man who keeps horses lives next to the Dunhill smoker.<br>
    The German smokes Prince.<br>
    The Norwegian lives next to the blue house.<br>
    The Blend smoker has a neighbor who drinks water.<br>
*/


//console.log(t.randoma("House"));
//t.stats();


/*
var Colors = ["Red", "White", "Yellow", "Blue", "Green"],
    Nationality = ["Norwegian", "Dane", "Swede", "Englishman", "German"],
    Cigarettes = ["Prince", "Blend", "Dunhill", "Blue Masters", "Pall Mall"],
    Drinks = ["Water", "Bier", "Milk", "Tea", "Coffee"],
    Animals = ["Dogs", "Birds", "Cat", "Horses", "Fish"];*/