export interface PrintfulMeta {
  sku: number;
  sizes?: string[];
  colors?: { id: string; name: string; hex: string }[];
}

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;
  // Printful product metadata (optional — cosmolocal-only products omit this)
  printful?: PrintfulMeta;
  // 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",
    printful: { sku: 358 },
  }),
  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",
    printful: {
      sku: 71,
      sizes: ["S", "M", "L", "XL", "2XL", "3XL"],
      colors: [
        { id: "black", name: "Black", hex: "#0a0a0a" },
        { id: "white", name: "White", hex: "#ffffff" },
        { id: "forest_green", name: "Forest Green", hex: "#2d4a3e" },
        { id: "heather_charcoal", name: "Heather Charcoal", hex: "#4a4a4a" },
        { id: "maroon", name: "Maroon", hex: "#5a2d2d" },
      ],
    },
  }),
  hoodie: makeTemplate({
    id: "hoodie",
    name: "Hoodie",
    description: "Front print on pullover hoodie (14x16 inch print area)",
    printArea: { widthMm: 356, heightMm: 406 },
    dpi: 300,
    bleedMm: 0,
    productType: "hoodie",
    substrates: ["cotton-polyester-blend", "cotton-organic"],
    requiredCapabilities: ["dtg-print"],
    finish: "none",
    printful: {
      sku: 146,
      sizes: ["S", "M", "L", "XL", "2XL"],
      colors: [
        { id: "black", name: "Black", hex: "#0a0a0a" },
        { id: "dark_grey_heather", name: "Dark Grey Heather", hex: "#3a3a3a" },
      ],
    },
  }),
};

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

// ── POD product configurations ──
// Maps design product types to POD provider SKUs and pricing

export interface PodProductConfig {
  type: string;
  provider: "printful" | "prodigi";
  sku: string;
  variants: string[];
  retailPrice: number;
}

/** Default POD product configs applied to each design */
export const POD_PRODUCTS: Record<string, PodProductConfig[]> = {
  sticker: [
    { type: "sticker", provider: "prodigi", sku: "GLOBAL-STI-KIS-3X3", variants: ["matte", "gloss"], retailPrice: 3.50 },
  ],
  poster: [
    { type: "print", provider: "prodigi", sku: "GLOBAL-FAP-A4", variants: ["matte"], retailPrice: 12.99 },
  ],
  tee: [
    { type: "shirt", provider: "printful", sku: "71", variants: ["S", "M", "L", "XL", "2XL"], retailPrice: 29.99 },
  ],
  hoodie: [
    { type: "hoodie", provider: "printful", sku: "146", variants: ["S", "M", "L", "XL", "2XL"], retailPrice: 39.99 },
  ],
};

/**
 * Get the POD product configs for a product type.
 * Returns an array of purchasable SKU configurations.
 */
export function getPodProducts(productType: string): PodProductConfig[] {
  return POD_PRODUCTS[productType] || [];
}

/**
 * Flatten all designs into purchasable storefront products.
 * Each design × product config = one storefront listing.
 */
export interface StorefrontProduct {
  slug: string;
  designSlug: string;
  name: string;
  description: string;
  category: string;
  productType: string;
  imageUrl: string;
  basePrice: number;
  variants: string[];
  provider: string;
  sku: string;
  isActive: boolean;
}