///
/// Calculate breakpoint query
///
/// @access private
///
/// @param {String} $type - type of query to get
/// @param {String} $key  - key of breakpoint
/// @param {Number} $i    - index of current breakpoint
///
/// @return {Number} - breakpoint value
///
/// @group Internal Functions
///
@function flint-calc-breakpoint($type, $key, $i) {

    @if $type == "alias" {

        @if flint-get-value("settings", "grid") == "fixed" {
            @if flint-is-lowest-breakpoint($key) {
                @return 0;
            } @else {
                @return flint-get-value("breakpoints", $key, "breakpoint");
            }
        } @else if flint-get-value("settings", "grid") == "fluid" {
            @return flint-get-value("breakpoints", $key, "breakpoint");
        }

    } @else if $type == "next" {

        @if flint-is-lowest-breakpoint($key) {
            @return 0;
        } @else {
            @return flint-get-value("breakpoints", flint-steal-key(($i + 1)), "breakpoint");
        }

    } @else if $type == "prev" {

        @if flint-is-highest-breakpoint($key) {
            @return flint-get-value("breakpoints", $key, "breakpoint");
        } @else {
            @return flint-get-value("breakpoints", flint-steal-key(($i - 1)), "breakpoint");
        }

    }

    @return false;
}