export type MaterialPattern = "grid" | "checker" | "stripes" | "diamond";

export interface MaterialDef {
  id: string;
  name: string;
  baseColorHex: string;
  accentColorHex: string;
  pattern: MaterialPattern;
  tags: string[];
}

export const STARTER_MATERIAL_LIBRARY: readonly MaterialDef[] = [
  {
    id: "starter-amber-grid",
    name: "Amber Grid",
    baseColorHex: "#c79a63",
    accentColorHex: "#5f3820",
    pattern: "grid",
    tags: ["starter", "wall"]
  },
  {
    id: "starter-concrete-checker",
    name: "Concrete Checker",
    baseColorHex: "#7d838c",
    accentColorHex: "#5a616a",
    pattern: "checker",
    tags: ["starter", "floor"]
  },
  {
    id: "starter-hazard-stripe",
    name: "Hazard Stripe",
    baseColorHex: "#d1a245",
    accentColorHex: "#211b16",
    pattern: "stripes",
    tags: ["starter", "warning"]
  },
  {
    id: "starter-night-diamond",
    name: "Night Diamond",
    baseColorHex: "#5a6985",
    accentColorHex: "#1f2836",
    pattern: "diamond",
    tags: ["starter", "trim"]
  }
] as const;

export function cloneMaterialDef(material: MaterialDef): MaterialDef {
  return {
    ...material,
    tags: [...material.tags]
  };
}

export function cloneMaterialRegistry(materials: Record<string, MaterialDef>): Record<string, MaterialDef> {
  return Object.fromEntries(
    Object.entries(materials).map(([materialId, material]) => [materialId, cloneMaterialDef(material)])
  );
}

export function createStarterMaterialRegistry(): Record<string, MaterialDef> {
  return Object.fromEntries(STARTER_MATERIAL_LIBRARY.map((material) => [material.id, cloneMaterialDef(material)]));
}