Counts the number of active filter values (for mobile badge).

Builds a URL path with filter query params.

Merges filter state into a clean query string, preserving page param only when keep_page is true.

Converts active filter state into keyword opts for Shop.list_products_with_count/1.

Builds a query string from active filter state (e.g. "?price_min=10&price_max=100" or "").

Used to append filter params to navigation links so filter state persists across page transitions.

Returns true if any filters are currently active.

Loads enabled filters and their aggregated values.

Returns {filters, filter_values} tuple.

Options:

• :category_uuid - Scope aggregation to a category by UUID
• :category - The %Category{} being viewed (its storefront_filters overrides the global filter config for :filters - see Shop.merge_storefront_filters/2); nil for the global catalog page
• :language - Translates an attribute_set/metadata_option filter's label to that language's attribute-set display name (see Shop.get_enabled_storefront_filters/2), and picks the same language's facet-value labels in :filter_values (forwarded to Shop.aggregate_filter_values/1 as part of opts)

Parses URL query params into active filter state.

Returns a map: %{"price" => %{min: Decimal, max: Decimal}, "vendor" => ["V1", "V2"], ...}

Toggles a value in a checkbox-type filter. Returns updated active_filters map.

Updates price range filter. Returns updated active_filters map.

Updates a text search filter. Returns updated active_filters map; a blank term removes the filter.