SearchResults.prototype.getFacetValues = function(attribute, opts) {
var facetValues = extractNormalizedFacetValues(this, attribute);
if (!facetValues) throw new Error(attribute + ' is not a retrieved facet.');
var options = defaults({}, opts, {sortBy: SearchResults.DEFAULT_SORT});
if (isArray(options.sortBy)) {
var order = formatSort(options.sortBy);
if (isArray(facetValues)) {
return sortByOrder(facetValues, order[0], order[1]);
}
// If facetValues is not an array, it's an object thus a hierarchical facet object
return recSort(partialRight(sortByOrder, order[0], order[1]), facetValues);
} else if (isFunction(options.sortBy)) {
if (isArray(facetValues)) {
return facetValues.sort(options.sortBy);
}
// If facetValues is not an array, it's an object thus a hierarchical facet object
return recSort(partial(vanillaSortFn, options.sortBy), facetValues);
}
throw new Error(
'options.sortBy is optional but if defined it must be ' +
'either an array of string (predicates) or a sorting function'
);
};
return function generateTree(hierarchicalTree, hierarchicalFacetResult, currentHierarchicalLevel) {
var parent = hierarchicalTree;
if (currentHierarchicalLevel > 0) {
var level = 0;
parent = hierarchicalTree;
while (level < currentHierarchicalLevel) {
parent = parent && find(parent.data, {isRefined: true});
level++;
}
}
// we found a refined parent, let's add current level data under it
if (parent) {
// filter values in case an object has multiple categories:
// {
// categories: {
// level0: ['beers', 'bières'],
// level1: ['beers > IPA', 'bières > Belges']
// }
// }
//
// If parent refinement is `beers`, then we do not want to have `bières > Belges`
// showing up
var onlyMatchingValuesFn = filterFacetValues(parent.path, currentRefinement, hierarchicalSeparator);
parent.data = sortByOrder(
map(
pick(hierarchicalFacetResult.data, onlyMatchingValuesFn),
formatHierarchicalFacetValue(hierarchicalSeparator, currentRefinement)
),
sortBy[0], sortBy[1]
);
}
return hierarchicalTree;
};