import { isAddress, parseUnits, ZeroAddress } from 'ethers';
export const CHAIN = { chainId: '0x1237', chainName: 'Robinhood Chain', nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 }, rpcUrls: ['https://rpc.mainnet.chain.robinhood.com'], blockExplorerUrls: ['https://robinhoodchain.blockscout.com'] };
export function vestedAt(s, now = Math.floor(Date.now() / 1000)) {
  const total = BigInt(s.total);
  if (now < s.cliff || now <= s.start) return 0n;
  if (now >= s.end) return total;
  return total * BigInt(now - s.start) / BigInt(s.end - s.start);
}
export function statusOf(s, now = Math.floor(Date.now() / 1000)) {
  if (BigInt(s.released) >= BigInt(s.total)) return 'complete';
  return now < s.cliff || now < s.start ? 'locked' : 'active';
}
export function validateSchedule(input, decimals, now = Math.floor(Date.now() / 1000)) {
  if (!isAddress(input.beneficiary) || input.beneficiary === ZeroAddress) throw new Error('Enter a valid, non-zero beneficiary address.');
  if (!isAddress(input.token) || input.token === ZeroAddress) throw new Error('Enter a valid token contract address.');
  if (!/^\d+(\.\d+)?$/.test(input.amount)) throw new Error('Enter a positive token amount.');
  let amount;
  try { amount = parseUnits(input.amount, decimals); } catch { throw new Error(`This token supports at most ${decimals} decimal places.`); }
  if (amount <= 0n || amount >= 2n ** 256n) throw new Error('The amount is outside the supported range.');
  if (![input.start, input.cliff, input.end].every(Number.isSafeInteger)) throw new Error('Enter all three dates.');
  if (input.start < now + 30) throw new Error('Start must be at least 30 seconds in the future.');
  if (input.end <= input.start) throw new Error('End must be after the start.');
  if (input.cliff < input.start || input.cliff > input.end) throw new Error('Cliff must fall between the start and end.');
  return { ...input, total: amount.toString(), decimals };
}