@use 'sass:map';
@use 'sass:meta';
@use '../../../style/elevation';
@use '../../token-definition';

// The prefix used to generate the fully qualified name for tokens in this file.
$prefix: (mat, app);

/// Generates custom tokens for the app.
/// @param {Map} $systems The MDC system tokens
/// @param {Boolean} $exclude-hardcoded Whether to exclude hardcoded token values
/// @param {Map} $token-slots Possible token slots
/// @return {Map} A set of custom tokens for the app
@function get-tokens($systems, $exclude-hardcoded, $token-slots) {
  $shadow-color: map.get($systems, md-sys-color, shadow);
  $tokens: (
    background-color: map.get($systems, md-sys-color, background),
    text-color: map.get($systems, md-sys-color, on-background),
  );

  // If the shadow-color is an actual color, convert it to a box-shadow value. Otherwise
  // use the token value as itself (e,g. as a CSS var name).
  @if (meta.type-of($shadow-color) == color) {
    @for $zValue from 0 through 24 {
      $shadow: elevation.get-box-shadow($zValue, $shadow-color);
      $tokens: map.set($tokens, 'elevation-shadow-level-#{$zValue}', $shadow);
    }
  }

  @return token-definition.namespace-tokens($prefix, $tokens, $token-slots);
}