@use 'sass:meta';
@use 'sass:map';

/// Convert a Material Design theme into an Otter theme
/// @param $meta-theme theme variable
/// @access private
@function _meta-theme-to-otter($meta-theme, $root-name) {
  @if (meta.type-of($meta-theme) != map) {
    @return (
      variable: $root-name,
      value: $meta-theme
    );
  }

  @else {
    $ret: $meta-theme;

    @each $key, $value in $meta-theme {
      $new-key: if($root-name != '', '#{$root-name}-#{$key}', $key);
      // We do not extract the metadata as (variable, value) pair
      $new-value: if($key != details, _meta-theme-to-otter($value, $new-key), $value);
      $ret: map.merge($ret, ($key: $new-value));
    }

    @return $ret;
  }
}

/// Convert a Meta theme to an Otter theme
/// @access public
/// @param {map} $meta-theme Meta theme
@function meta-theme-to-otter($meta-theme: ()) {
  @return _meta-theme-to-otter($meta-theme, '');
}