import { OHIF } from 'meteor/ohif:core';

// Return the array sorting function for its object's properties
OHIF.utils.sortBy = function() {
    var fields = [].slice.call(arguments),
        n_fields = fields.length;

    return function(A, B) {
        var a, b, field, key, primer, reverse, result, i;

        for (i = 0; i < n_fields; i++) {
            result = 0;
            field = fields[i];

            key = typeof field === 'string' ? field : field.name;

            a = A[key];
            b = B[key];

            if (typeof field.primer !== 'undefined') {
                a = field.primer(a);
                b = field.primer(b);
            }

            reverse = (field.reverse) ? -1 : 1;

            if (a < b) {
                result = reverse * -1;
            }

            if (a > b) {
                result = reverse * 1;
            }

            if (result !== 0) {
                break;
            }
        }

        return result;
    };
};