// One-off data fix: the 5 hand-authored demo products (product-classic-ring,
// product-woven-bracelet, product-pendant-necklace, product-hoop-earrings,
// product-full-coin) each had exactly one ProductImage row pointing at
// /img/no-items.png — a missing-image placeholder, not a real photo. This
// replaces those with a real, varied set drawn from the 15 jewelry photos the
// user pointed at (originally in "Downloads/New folder", already copied into
// storage/uploads/ under their original filenames — confirmed present before
// this script was written).
//
// Distribution, mirroring the one product in this DB that already has a full,
// correctly-roled image set (`شسی`, id cmu4ia4iq0008s4zhwrz6wy3z):
//   - exactly one FEATURED        (تصویر شاخص وب)
//   - exactly one FEATURED_MOBILE (تصویر شاخص موبایل)
//   - 2–3 GALLERY / GALLERY_MOBILE, split across both roles
//
// CHECKED, not assumed: CatalogService.listProducts() (apps/api/src/modules/
// catalog/catalog.service.ts) returns every ProductImage row unfiltered —
// there is no role-based split on the read side today. So on the user-app
// side ALL of these rows end up in ProductSummary.images and all of them are
// swipeable in the gallery/preview — the FEATURED/FEATURED_MOBILE role still
// matters (it is what the admin panel and any future "hero image" logic reads
// by role), but right now it does not narrow what the shopper-facing gallery
// shows. `sortOrder` is set to the creation index below, which is what
// actually determines swipe order today, since nothing filters by role.
//
// Assignment across the 5 products is a random, non-repeating draw per
// product from the 15-photo pool (Fisher-Yates, reseedable via IMG_SEED for a
// reproducible run) — the same photo can end up on more than one product
// across different products (15 photos split ~4 ways per product exceeds the
// pool), which is fine: this is demo data standing in for real per-product
// photography, not a claim that these are 5 distinct real items.
const { PrismaClient } = require('@prisma/client');
const prisma = new PrismaClient();

// The 15 files confirmed present in storage/uploads/ under their original
// names before this script ran.
const POOL = [
  '152_5e1435ca-05a5-4146-a4ea-89726650c29c.webp',
  '59_0661f668-5d1d-4c05-87fd-50fd65cd8383.webp',
  '71085964.png',
  '79A202-1201_01.webp',
  'Brooches-Vintage-Jewelry-full-1-322_60.60-9ed8e81b.webp',
  'MB116662_Front_1080p_f364da1d-6019-4ca4-8dd8-a323387634c7.webp',
  'TEMP_360x360.webp',
  'channel_setting_480x480.webp',
  'engagement-ring-in-18k-gold-with-diamonds-nr532-white-18k-semi-white-205224.webp',
  'finished-jewelry.webp',
  'kisspng-earring-gold-jewellery-ring-new-22ct-yellow-gold-ring-armari-45-sku27555-5d0796cb466539.4977043815607784432884-768x768.png',
  'pl-background-free-product-photography-jewelery-3.webp',
  'round-cut-engagement-ring-in-18k-gold-with-diamonds-lr3011-2t-18k-x-2t-964060.webp',
  'td4-aam-n0_dd28f69d-9e3c-490d-be37-1ba074737992.webp',
  'w=640,h=640,fit=crop.avif',
];

const PRODUCT_IDS = [
  'product-classic-ring',
  'product-woven-bracelet',
  'product-pendant-necklace',
  'product-hoop-earrings',
  'product-full-coin',
];

// Simple seeded PRNG (mulberry32) so a re-run with the same IMG_SEED is
// reproducible — useful for re-checking a specific assignment without the
// draw changing under you.
function mulberry32(seed) {
  return function () {
    seed |= 0;
    seed = (seed + 0x6d2b79f5) | 0;
    let t = Math.imul(seed ^ (seed >>> 15), 1 | seed);
    t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
    return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
  };
}
const seed = Number(process.env.IMG_SEED) || Date.now();
const rand = mulberry32(seed);

function shuffled(arr) {
  const a = arr.slice();
  for (let i = a.length - 1; i > 0; i--) {
    const j = Math.floor(rand() * (i + 1));
    [a[i], a[j]] = [a[j], a[i]];
  }
  return a;
}

async function main() {
  console.log(`seed=${seed}`);

  for (const productId of PRODUCT_IDS) {
    const product = await prisma.product.findUnique({ where: { id: productId } });
    if (!product) {
      console.log(`skip ${productId}: not found`);
      continue;
    }

    // 3–5 photos per product, drawn without replacement from the pool.
    const count = 3 + Math.floor(rand() * 3); // 3, 4, or 5
    const picks = shuffled(POOL).slice(0, count);

    // Role plan: first pick is FEATURED, second is FEATURED_MOBILE, the rest
    // alternate GALLERY / GALLERY_MOBILE — same shape as the شسی product's
    // existing 8-image set, just proportioned to a smaller pick count.
    const roles = ['FEATURED', 'FEATURED_MOBILE'];
    for (let i = 2; i < picks.length; i++) {
      roles.push(i % 2 === 0 ? 'GALLERY' : 'GALLERY_MOBILE');
    }

    // Replace whatever this product currently has (the single no-items.png
    // placeholder row) rather than appending alongside it.
    await prisma.productImage.deleteMany({ where: { productId } });

    for (let i = 0; i < picks.length; i++) {
      await prisma.productImage.create({
        data: {
          id: `${productId}-img-${i + 1}`,
          productId,
          url: `/uploads/${picks[i]}`,
          sortOrder: i,
          role: roles[i],
        },
      });
    }

    console.log(`${productId}: ${picks.length} images -> ${picks.map((p, i) => `${roles[i]}:${p}`).join(', ')}`);
  }
}

main()
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(() => prisma.$disconnect());