export interface ProductTemplate {
  id: string;
  name: string;
  description: string;
  // Print area dimensions in mm
  printArea: { widthMm: number; heightMm: number };
  // Output DPI
  dpi: number;
  // Bleed in mm
  bleedMm: number;
  // What artifact spec fields to use
  productType: string;
  substrates: string[];
  requiredCapabilities: string[];
  finish: string;
  // Computed pixel dimensions (at DPI)
  get widthPx(): number;
  get heightPx(): number;
}

function makeTemplate(opts: Omit<ProductTemplate, "widthPx" | "heightPx">): ProductTemplate {
  return {
    ...opts,
    get widthPx() {
      return Math.round(((this.printArea.widthMm + this.bleedMm * 2) / 25.4) * this.dpi);
    },
    get heightPx() {
      return Math.round(((this.printArea.heightMm + this.bleedMm * 2) / 25.4) * this.dpi);
    },
  };
}

export const PRODUCTS: Record<string, ProductTemplate> = {
  sticker: makeTemplate({
    id: "sticker",
    name: "Sticker Sheet",
    description: "A4 sheet of die-cut vinyl stickers",
    printArea: { widthMm: 210, heightMm: 297 },
    dpi: 300,
    bleedMm: 2,
    productType: "sticker-sheet",
    substrates: ["vinyl-matte", "vinyl-gloss", "sticker-paper-matte"],
    requiredCapabilities: ["vinyl-cut"],
    finish: "matte",
  }),
  poster: makeTemplate({
    id: "poster",
    name: "Poster (A3)",
    description: "A3 art print / poster",
    printArea: { widthMm: 297, heightMm: 420 },
    dpi: 300,
    bleedMm: 3,
    productType: "poster",
    substrates: ["paper-160gsm-cover", "paper-100gsm"],
    requiredCapabilities: ["inkjet-print"],
    finish: "matte",
  }),
  tee: makeTemplate({
    id: "tee",
    name: "T-Shirt",
    description: "Front print on cotton tee (12x16 inch print area)",
    printArea: { widthMm: 305, heightMm: 406 },
    dpi: 300,
    bleedMm: 0,
    productType: "tee",
    substrates: ["cotton-standard", "cotton-organic"],
    requiredCapabilities: ["dtg-print"],
    finish: "none",
  }),
};

export function getProduct(id: string): ProductTemplate | undefined {
  return PRODUCTS[id];
}