Count the number of silver, gold, platinum, and unique recipients of awards in the Sparcet system.

SparcetGroupBySampleMongo.js

function map() {
    var val = {
        silver: 0,
        gold: 0,
        platinum: 0,
        total: 1,
        email: this.From.Email,
        unique: { },
        uniqueCount: [this.To._id]
    };

    if (this.Type == 0) {
        val.silver = 1;
    } else if (this.Type == 1) {
        val.gold = 1;
    } else {
        val.platinum = 1;
    }

    emit(this.From._id, val);
}

function reduce(key, values) {
    var r = { _id: key, silver: 0, gold: 0, platinum: 0, total: 0, email: '', unique: {}, uniqueCount: [] };
    values.forEach(function(v) {
        r.silver += v.silver;
        r.gold += v.gold;
        r.platinum += v.platinum;
        r.total += v.total;
        r.email = v.email;
        v.uniqueCount.forEach(function(u) {
            if (!r.unique[u]) {
                r.unique[u] = true;
                r.uniqueCount.push(u);
            }
        });
                    
    });

    return r;
}