define([
    'underscore',
    'mage/utils/objects',
    'Magento_Rule/conditions-data-normalizer'
], function (_, objectUtils, ConditionsDataNormalizer) {
    'use strict';

    var serializer = new ConditionsDataNormalizer();

    return function (data, attribute) {
        var pairs = {},
            conditions = '';

        /*
         * WEPPA The Condition Rule Tree is not a UI component and doesn't provide good data.
         * The best solution is to implement the tree as a UI component that can provide good data but
         * that is outside of the scope of the feature for now.
         */
        _.each(data, function (element, key) {
            // parameters is hardcoded in the Magento\Rule model that creates the HTML forms.
            if (key.indexOf('parameters[' + attribute + ']') === 0) {
                // Remove the bad, un-normalized data.
                delete data[key];
                pairs[key] = element;
            }
        });

        /*
         * The Combine Condition rule needs to have children,
         * if does not have, we cannot parse the rule in the backend.
         */
        _.each(pairs, function (element, key) {
            var keyIds = key.match(/[\d?-]+/g),
                combineElement = 'Magento\\CatalogWidget\\Model\\Rule\\Condition\\Combine',
                nextPairsFirstKey = 'parameters[condition_source][NEXT_ITEM--1][type]',
                nextPairsSecondKey = 'parameters[condition_source][NEXT_ITEM--2][type]';

            if (keyIds !== null && element === combineElement) {
                if (pairs[nextPairsFirstKey.replace('NEXT_ITEM', keyIds[0])] === undefined ||
                    pairs[nextPairsFirstKey.replace('NEXT_ITEM', keyIds[0])] === combineElement &&
                    pairs[nextPairsSecondKey.replace('NEXT_ITEM', keyIds[0])] === undefined) {
                    pairs[key] = '';
                }
            }
        });

        /*
         * Add pairs in case conditions source is not rules configurator
         */
        if (data['data_condition_option'] !== 'condition') {
            pairs['parameters[' + attribute + '][1--1][operator]'] =
                data[data['condition_option'] + '-condition_operator'] ?
                    data[data['condition_option'] + '-condition_operator'] :
                    '==';
            pairs['parameters[' + attribute + '][1--1][type]'] =
                'Magento\\CatalogWidget\\Model\\Rule\\Condition\\Product';
            pairs['parameters[' + attribute + '][1][aggregator]'] = 'all';
            pairs['parameters[' + attribute + '][1][new_child]'] = '';
            pairs['parameters[' + attribute + '][1][type]'] = 'Magento\\CatalogWidget\\Model\\Rule\\Condition\\Combine';
            pairs['parameters[' + attribute + '][1][value]'] = '1';
            pairs['parameters[' + attribute + '][1--1][attribute]'] = data['condition_option'];
            pairs['parameters[' + attribute + '][1--1][value]'] = _.isString(data[data['condition_option']]) ?
                data[data['condition_option']].trim() :
                '';
        }

        if (!_.isEmpty(pairs)) {
            conditions = JSON.stringify(serializer.normalize(pairs).parameters[attribute]);
            data['conditions_encoded'] = conditions;
            objectUtils.nested(data, attribute, conditions);
        }
    };
});
