@use 'sass:map';
@use 'sass:list';
@use '../core/tokens/m3-utils';
@use '../core/theming/theming';
@use '../core/tokens/m3';

/// Generates custom tokens for the mat-chip.
@function get-tokens($theme: m3.$sys-theme, $color-variant: null) {
  $system: m3-utils.get-system($theme);
  @if $color-variant {
    $system: m3-utils.replace-colors-with-variant($system, secondary, $color-variant);
  }

  @return (
    base: (
      chip-container-shape-radius: 8px,
      chip-disabled-container-opacity: 1,
      chip-elevated-container-color: transparent, // surface in M3, but not emitted in MDC
      chip-flat-selected-outline-width: 0,
      chip-outline-width: 1px,
      chip-trailing-action-focus-opacity: 1,
      chip-trailing-action-opacity: 1,
      chip-with-avatar-avatar-shape-radius: 24px,
      chip-with-avatar-avatar-size: 24px,
      chip-with-avatar-disabled-avatar-opacity: 0.38,
      chip-with-icon-disabled-icon-opacity: 0.38,
      chip-with-icon-icon-size: 18px,
      chip-with-trailing-icon-disabled-trailing-icon-opacity: 0.38,
    ),
    color: (
      chip-disabled-label-text-color:
          m3-utils.color-with-opacity(map.get($system, on-surface), 38%),
      chip-disabled-outline-color: m3-utils.color-with-opacity(map.get($system, on-surface), 12%),
      chip-elevated-selected-container-color: map.get($system, secondary-container),
      chip-flat-disabled-selected-container-color:
          m3-utils.color-with-opacity(map.get($system, on-surface), 12%),
      chip-focus-outline-color: map.get($system, on-surface-variant),
      chip-focus-state-layer-color: map.get($system, on-surface-variant),
      chip-focus-state-layer-opacity: map.get($system, focus-state-layer-opacity),
      chip-hover-state-layer-color: map.get($system, on-surface-variant),
      chip-hover-state-layer-opacity: map.get($system, hover-state-layer-opacity),
      chip-label-text-color: map.get($system, on-surface-variant),
      chip-outline-color: map.get($system, outline),
      chip-selected-disabled-trailing-icon-color: map.get($system, on-surface),
      chip-selected-focus-state-layer-color: map.get($system, on-secondary-container),
      chip-selected-focus-state-layer-opacity: map.get($system, focus-state-layer-opacity),
      chip-selected-hover-state-layer-color: map.get($system, on-secondary-container),
      chip-selected-hover-state-layer-opacity: map.get($system, hover-state-layer-opacity),
      chip-selected-label-text-color: map.get($system, on-secondary-container),
      chip-selected-trailing-action-state-layer-color: map.get($system, on-secondary-container),
      chip-selected-trailing-icon-color: map.get($system, on-secondary-container),
      chip-trailing-action-focus-state-layer-opacity: map.get($system, focus-state-layer-opacity),
      chip-trailing-action-hover-state-layer-opacity: map.get($system, hover-state-layer-opacity),
      chip-trailing-action-state-layer-color: map.get($system, on-surface-variant),
      chip-with-icon-disabled-icon-color: map.get($system, on-surface),
      chip-with-icon-icon-color: map.get($system, on-surface-variant),
      chip-with-icon-selected-icon-color: map.get($system, on-secondary-container),
      chip-with-trailing-icon-disabled-trailing-icon-color:map.get($system, on-surface),
      chip-with-trailing-icon-trailing-icon-color: map.get($system, on-surface-variant),
      chip-elevated-disabled-container-color: null,
    ),
    typography: (
      chip-label-text-font: map.get($system, label-large-font),
      chip-label-text-line-height: map.get($system, label-large-line-height),
      chip-label-text-size: map.get($system, label-large-size),
      chip-label-text-tracking: map.get($system, label-large-tracking),
      chip-label-text-weight: map.get($system, label-large-weight),
    ),
    density: get-density-tokens(map.get($system, density-scale)),
  );
}

// Tokens that can be configured through Angular Material's density theming API.
@function get-density-tokens($scale) {
  $scale: theming.clamp-density($scale, -2);
  $index: ($scale * -1) + 1;

  @return (
    chip-container-height: list.nth((32px, 28px, 24px), $index),
  );
}