// What Silent Mode actually sells, stated honestly.
//
// The register page shows four hosting options, but they are not four products.
// Three of them cost us nothing and are already free with any name: an `h`
// record is a transaction, an `ip`/`u` record is a pointer at the customer's own
// box, and a customer-run Sia is their renterd, not ours. Only **managed Sia**
// is hosting-as-a-service.
//
// This file keeps that distinction in the data rather than in the copy, so the
// UI cannot drift into implying we run a service we do not. Every plan declares:
//
//   kind        'free' | 'managed' | 'referral'
//   weStore     do WE hold the customer's bytes? (the liability question)
//   recurring   does it lapse?
//   onLapse     what the buyer is left with when it does
//
// THE LAPSE STORY MATTERS MORE THAN THE PRICE. The strongest claim on the page
// is that a name needs no renewal, ever. Hosting does lapse. If the two blur
// together the flagship claim gets damaged by association, so every recurring
// plan must state plainly that the NAME is unaffected — it simply points nowhere
// until repointed, and repointing is free and needs nobody's permission.

export const PLAN_KIND = {
  free: "free",         // included with a name; costs us nothing ongoing
  managed: "managed",   // we store and serve — the only real service
  referral: "referral", // someone else's product; we just link
};

/** Managed hosting is sold in prepaid periods. See ROADMAP note at the bottom. */
export const PERIOD = { year: "1y", quarter: "3m" };

export const HOSTING_PLANS = [
  {
    id: "onchain",
    kind: PLAN_KIND.free,
    title: "On the blockchain",
    record: "h",
    weStore: false,
    recurring: false,
    priceSats: 0n,
    blurb:
      "A small site stored inside the transaction itself. No server, no host, " +
      "permanent as the chain.",
    limits: "About 150 bytes of HTML — a page, a profile, a link hub.",
    onLapse: null, // nothing to lapse
  },
  {
    id: "own-server",
    kind: PLAN_KIND.free,
    title: "Your own server",
    record: "ip",
    weStore: false,
    recurring: false,
    priceSats: 0n,
    blurb:
      "Point the name straight at a machine you run. Works with anything you " +
      "already host.",
    limits: "You run the server; we never see the traffic.",
    onLapse: null,
  },
  {
    id: "byo-sia",
    kind: PLAN_KIND.free,
    title: "Your own Sia",
    record: "s3",
    weStore: false,
    recurring: false,
    priceSats: 0n,
    blurb:
      "Already running renterd, or paying a Sia provider? We set the record and " +
      "step out of the way.",
    limits: "You hold the storage contracts. Nothing of yours touches our infrastructure.",
    onLapse: null,
  },
  {
    id: "sia-managed-1y",
    kind: PLAN_KIND.managed,
    title: "Managed Sia hosting",
    record: "s3",
    weStore: true,
    recurring: true,
    period: PERIOD.year,
    // Chipnet placeholder. Sia storage itself is pennies for a website; the cost
    // here is operational, so this is priced as a flat period fee rather than
    // per-gigabyte — pretending otherwise would be theatre.
    priceSats: 250_000n,
    quotaMB: 500,
    blurb:
      "Upload your files and we store them on the Sia network and serve them " +
      "through the gateway. Encrypted and spread across independent hosts.",
    limits: "500 MB, renewed yearly.",
    onLapse:
      "Your name is unaffected — it is yours permanently either way. If hosting " +
      "lapses the site stops being served and the name simply points nowhere " +
      "until you repoint it, which is free and needs nobody's permission.",
  },
];

/** Third parties. Listed for convenience, sold by us in no sense whatsoever. */
export const VPS_REFERRALS = [
  { id: "mynymbox", title: "MyNymBox", blurb: "No-KYC VPS and hosting. Monero, Bitcoin, Lightning.", price: "from ~€3.50/mo", url: "https://mynymbox.io" },
  { id: "njalla", title: "Njalla", blurb: "Privacy-by-proxy domains and VPS. Crypto accepted.", price: "domains ~€15/yr", url: "https://njal.la" },
  { id: "1984", title: "1984 Hosting", blurb: "Iceland-based, privacy-respecting hosting.", price: "varies", url: "https://1984.hosting" },
];

export const planById = (id) => HOSTING_PLANS.find((p) => p.id === id) ?? null;

/** Plans a buyer actually pays us for. */
export const paidPlans = () => HOSTING_PLANS.filter((p) => p.priceSats > 0n);

/** Everything included free with a name — most of the list, and worth saying so. */
export const freePlans = () => HOSTING_PLANS.filter((p) => p.kind === PLAN_KIND.free);

/**
 * Price a name, optionally with hosting, as ONE payment.
 *
 * A buyer purchasing both should pay once, to one address, not twice — the order
 * system already carries a single deposit address per order, so a bundle is a
 * line-item list rather than two orders to reconcile.
 *
 * `namePriceSats` comes from `quotePrice()` in orders.js, which already includes
 * the chain costs of minting.
 */
export function quoteBundle({ namePriceSats, planId = null }) {
  const lines = [{ id: "name", label: "Name certificate", sats: BigInt(namePriceSats) }];
  const plan = planId ? planById(planId) : null;
  if (planId && !plan) throw new Error(`unknown hosting plan "${planId}"`);
  if (plan && plan.priceSats > 0n) {
    lines.push({ id: plan.id, label: `${plan.title} (${plan.period ?? "one-off"})`, sats: plan.priceSats });
  }
  return {
    lines,
    plan,
    totalSats: lines.reduce((s, l) => s + l.sats, 0n),
    // True when the buyer is trusting us with bytes, not just with minting.
    createsHostingObligation: !!plan?.weStore,
    recurring: !!plan?.recurring,
  };
}

/**
 * ROADMAP — covenant subscriptions replace prepaid periods.
 *
 * Prepaid periods exist because they work today on the escrow that already
 * ships. They are not the end state: BCH covenants can express a real
 * subscription, which BTC cannot. A CashScript contract holds the buyer's funds
 * and permits the host to withdraw `priceSats` once per period, enforced by the
 * covenant re-creating itself under a relative timelock.
 *
 * That is strictly better than a card subscription in three ways a buyer can
 * check for themselves: the balance stays theirs, the host structurally cannot
 * take more than one period's fee per period, and cancellation is unilateral —
 * they reclaim the remainder without asking anyone.
 *
 * It is the SAME primitive as the delivery-escrow covenant in
 * `Decentralized.DNS/DESIGN-trustless-purchase.md` §4 — a contract that releases
 * funds only on a condition. Design them together; building them separately
 * would be doing the hard part twice.
 */
export const SUBSCRIPTION_ROADMAP = {
  today: "prepaid periods on the existing escrow",
  next: "CashScript covenant subscription (pull-per-period, cancel-anytime)",
  sharesDesignWith: "Decentralized.DNS/DESIGN-trustless-purchase.md §4 (delivery escrow)",
};