// Sirius.X pricing model — deterministic per-label cost so users can predict
// what a name or TLD will cost before they click Register. Public tiers only;
// operator-level discounts and coupon overrides land in a future revision
// (the plan is oracle-fed rates + coupon-code redemption at mint time).
//
// Exposed as window.siriusPricing so both the register-flow modal and the
// inline search widgets on landing/tld.html use one source of truth.

(() => {
  // Chipnet placeholder rate: mainnet swaps this for a real BCH/USD oracle.
  // The numbers keep the demo transactions in the "few chipnet coins" range
  // so a single faucet visit covers a name or a TLD.
  const CHIPNET_SATS_PER_USD = 250_000;

  const usdToSats = (usd) => BigInt(Math.max(0, Math.round(Number(usd) * CHIPNET_SATS_PER_USD)));

  const cleanLabel = (s) => String(s || "").toLowerCase().replace(/[^a-z0-9-]/g, "");

  // Tier picker — LENGTH-first, then downshift for "less brandable" shapes
  // (all-digits, hyphenated). Kept as multiplicative modifiers so tiers
  // remain the primary story and mods just soften an edge case.
  function priceForName(label) {
    const s = cleanLabel(label);
    if (!s) return { usd: 0, tier: "invalid" };
    let usd, tier;
    if (s.length === 1)      { usd = 5.00; tier = "premium-1"; }
    else if (s.length === 2) { usd = 3.00; tier = "short-2"; }
    else if (s.length === 3) { usd = 2.00; tier = "short-3"; }
    else if (s.length <= 5)  { usd = 1.00; tier = "standard"; }
    else if (s.length <= 7)  { usd = 0.50; tier = "long"; }
    else if (s.length <= 16) { usd = 0.25; tier = "extended"; }
    else                     { usd = 0.10; tier = "very-long"; }
    // Modifiers.
    if (/^\d+$/.test(s))     { usd = round2(usd * 0.5); tier += "+digits"; }
    if (s.includes("-"))     { usd = round2(usd * 0.7); tier += "+hyphen"; }
    return { usd, tier, sats: usdToSats(usd) };
  }

  function priceForTld(label) {
    const s = cleanLabel(label);
    if (!s) return { usd: 0, tier: "invalid" };
    let usd, tier;
    if (s.length === 1)      { usd = 10.00; tier = "premium-1"; }
    else if (s.length === 2) { usd = 8.00;  tier = "short-2"; }
    else if (s.length === 3) { usd = 6.00;  tier = "short-3"; }
    else if (s.length <= 8)  { usd = 5.00;  tier = "standard"; }
    else                     { usd = 4.00;  tier = "long"; }
    return { usd, tier, sats: usdToSats(usd) };
  }

  // Rounded USD → display string. Under $1 shows cents ($0.25); $1 and up
  // shows whole dollars ($5) unless there's a fractional part.
  function formatUsd(usd) {
    const n = Number(usd || 0);
    if (n >= 1 && n === Math.floor(n)) return `$${n}`;
    return `$${n.toFixed(2)}`;
  }
  function formatSats(sats) {
    return `${BigInt(sats || 0n).toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",")} sat`;
  }
  function round2(n) { return Math.round(Number(n) * 100) / 100; }

  window.siriusPricing = {
    priceForName,
    priceForTld,
    formatUsd,
    formatSats,
    usdToSats,
    CHIPNET_SATS_PER_USD,
  };
})();