/** Design tokens for the canvas UI. Sizes only one widget uses may stay local to it. */
import { TextStyle } from 'pixi.js';

export const Theme = {
  // Both ship with the build (`fonts.ts`); the rest only covers glyphs outside their Latin subset.
  font: '"Source Sans 3", "Segoe UI", Roboto, Helvetica, Arial, sans-serif',
  monoFont: '"Source Code Pro", Consolas, "Courier New", monospace',
  fontSize: 13,
  smallFontSize: 11,
  viewportLabelSize: 10,
  captionSize: 16,
  rowHeight: 24,
  controlHeight: 24,
  padding: 8,
  headerPadding: 4,
  gap: 4,
  radius: 2,
  fieldPadding: 4,
  checkboxSize: 16,
  scrollbarWidth: 4,
  treeIndent: 12,
  hoverCursor: 'default',
  colors: {
    background: 0x1b1d22,
    panel: 0x24272e,
    panelHeader: 0x2c3038,
    border: 0x383c46,
    control: 0x16181d,
    controlHover: 0x1e2127,
    controlActive: 0x16181d,
    accent: 0x4c8dff,
    accentText: 0xffffff,
    /** Tab row: the bar the index cards sit on, the card showing, and one under the pointer. */
    tabBar: 0x1f2229,
    tabActive: 0x3f444e,
    tabHover: 0x2c3038,
    text: 0xe6e8ee,
    textMuted: 0x8a90a0,
    selection: 0x2b4a80,
    danger: 0xe0553f,
    viewport: 0x121316,
    gizmo: 0x4c8dff,
    /** Every symbol in the scene view: white, held off any ground by a dark outline. */
    symbol: 0xffffff,
    symbolOutline: 0x0b0c0f,
    /** Owner links of behaviors. */
    behavior: 0xb066ff,
    /** Collider outlines: solid (blocking) and trigger (events only). */
    collider: 0x4fd18b,
    trigger: 0xf2c84b,
    container: 0x3fb8c9,
    /** Particle source icon and owner links; the same orange the graph gives the category. */
    particles: 0xc26a1f,
    marquee: 0x4c8dff,
    /** The eyedropper's candidate in the scene view (#276): the colour of an object port. */
    objectPick: 0x56ccf2,
    /** A value deviating from what it follows: an override on a placed object, a non-default on an asset. */
    override: 0xf2c84b,
    /** Node graph: canvas, node chrome, per-category title colors, port colors, live highlight. */
    graphBackground: 0x15171b,
    node: 0x262a32,
    nodeBorder: 0x3b404b,
    nodeSelected: 0x4c8dff,
    categoryEvent: 0xc0392b,
    categoryFlow: 0x7f8c8d,
    categoryData: 0x2e8b57,
    categoryVariable: 0xb8860b,
    categoryAction: 0x2f6fd6,
    categoryState: 0x8e5ad6,
    categoryShader: 0x1f8f8f,
    categoryParticles: 0xc26a1f,
    portExec: 0xffffff,
    portNumber: 0x6fcf97,
    portBoolean: 0xe57373,
    portString: 0xe6a8ff,
    portObject: 0x56ccf2,
    portList: 0xf2a75c,
    portStruct: 0xd4c25a,
    portVec3: 0xff9ad5,
    portAny: 0xbdbdbd,
    /** Ring around the port a running edge drag would connect to. */
    portTarget: 0xffffff,
    /** Groups and comments that were never given a colour of their own. */
    annotation: 0x3c4352,
    hot: 0xffc857,
  },
} as const;

const styleCache = new Map<string, TextStyle>();

export type TextStyleToken =
  | 'body'
  | 'bodyBold'
  | 'muted'
  | 'override'
  | 'link'
  | 'small'
  | 'warning'
  | 'danger'
  | 'live'
  | 'title'
  | 'mono'
  | 'monoMuted'
  | 'monoWarn'
  | 'monoError'
  | 'accent'
  | 'viewportLabel'
  | 'viewportLabelMuted';

/** Shared TextStyle instances so Pixi can cache glyph measurements per token. */
export function textStyle(token: TextStyleToken = 'body'): TextStyle {
  let style = styleCache.get(token);
  if (style) return style;
  const base = { fontFamily: Theme.font, fontSize: Theme.fontSize, fill: Theme.colors.text };
  switch (token) {
    case 'body':
      style = new TextStyle(base);
      break;
    case 'bodyBold':
      style = new TextStyle({ ...base, fontWeight: '500' });
      break;
    case 'muted':
      style = new TextStyle({ ...base, fill: Theme.colors.textMuted });
      break;
    case 'override':
      style = new TextStyle({ ...base, fill: Theme.colors.override });
      break;
    case 'link':
      style = new TextStyle({ ...base, fill: Theme.colors.accent });
      break;
    case 'small':
      style = new TextStyle({ ...base, fontSize: Theme.smallFontSize, fill: Theme.colors.textMuted });
      break;
    case 'warning':
      style = new TextStyle({ ...base, fontSize: Theme.smallFontSize, fill: Theme.colors.danger });
      break;
    case 'danger':
      style = new TextStyle({ ...base, fill: Theme.colors.danger });
      break;
    case 'live':
      style = new TextStyle({ ...base, fontSize: Theme.smallFontSize, fill: Theme.colors.hot });
      break;
    case 'title':
      style = new TextStyle({
        ...base,
        fontSize: Theme.smallFontSize,
        fontWeight: '500',
        letterSpacing: 0.5,
        fill: Theme.colors.textMuted,
      });
      break;
    case 'mono':
      style = new TextStyle({ ...base, fontFamily: Theme.monoFont });
      break;
    case 'monoMuted':
      style = new TextStyle({ ...base, fontFamily: Theme.monoFont, fill: Theme.colors.textMuted });
      break;
    case 'monoWarn':
      style = new TextStyle({ ...base, fontFamily: Theme.monoFont, fill: Theme.colors.override });
      break;
    case 'monoError':
      style = new TextStyle({ ...base, fontFamily: Theme.monoFont, fill: Theme.colors.danger });
      break;
    case 'accent':
      style = new TextStyle({ ...base, fill: Theme.colors.accentText, fontWeight: '600' });
      break;
    case 'viewportLabel':
      style = new TextStyle({ ...base, fontSize: Theme.viewportLabelSize });
      break;
    case 'viewportLabelMuted':
      style = new TextStyle({ ...base, fontSize: Theme.viewportLabelSize, fill: Theme.colors.textMuted });
      break;
  }
  styleCache.set(token, style);
  return style;
}