import { ADDITIONAL_MARKET_FEE } from '../../shared/market.ts';

/** No live payment adapter is reachable in this release. Never return a payable mock address. */
export function paymentMode(env: NodeJS.ProcessEnv = process.env): 'mock' {
  const mode = env.WIKIDECK_PAYMENT_MODE ?? 'mock';
  if (mode !== 'mock') throw new Error('Real payments are launch-gated. Only WIKIDECK_PAYMENT_MODE=mock is supported until production settlement review.');
  return mode;
}
export function xmrString(atomic: bigint): string {
  return `${atomic / 1_000_000_000_000n}.${(atomic % 1_000_000_000_000n).toString().padStart(12, '0')}`;
}
/** Deterministic simulation ONLY. Round gross up and both independent seller fees down. */
export function mockQuote(priceCents: number, feeBps: number, usdCentsPerXmr: number) {
  const rate = BigInt(usdCentsPerXmr);
  const gross = (BigInt(priceCents) * 1_000_000_000_000n + rate - 1n) / rate;
  const fee = gross * BigInt(feeBps) / 10_000n;
  const additionalFee = gross * BigInt(ADDITIONAL_MARKET_FEE.bps) / 10_000n;
  return { invoice: { provider: 'mock' as const, amountXmr: xmrString(gross), address: null,
    label: 'SIMULATION ONLY — no Monero payment address. Never send real XMR.' },
    feeXmr: xmrString(fee), sellerNetXmr: xmrString(gross - fee - additionalFee),
    additionalFee: { ...ADDITIONAL_MARKET_FEE, amountXmr: xmrString(additionalFee), payout: 'not-started' as const } };
}