import { Contract, isAddress, keccak256 } from 'ethers';
import { CHAIN, vestedAt, statusOf } from './vesting.js';
import { readTokenMetadata } from './token-metadata.js';

export function publicLink(origin, workspace, schedule = '') {
  const url = new URL('/vesting.html', origin);
  url.searchParams.set('workspace', workspace);
  if (schedule) url.searchParams.set('schedule', String(schedule));
  return url.href;
}

export async function readPublicSchedule(provider, artifact, workspace, id) {
  if (!isAddress(workspace)) throw Error('Enter a valid workspace contract address, not a wallet or token address.');
  if (!/^[1-9]\d*$/.test(String(id)) || BigInt(id) >= 2n ** 256n) throw Error('Enter a positive schedule ID.');
  const network = await provider.getNetwork();
  if (network.chainId !== BigInt(CHAIN.chainId)) throw Error('The public RPC is on the wrong network.');
  const block = await provider.getBlock('latest');
  if (!block) throw Error('The latest block is unavailable. Please retry.');
  const code = await provider.getCode(workspace, block.number);
  if (code === '0x' || keccak256(code) !== keccak256(artifact.runtimeBytecode)) throw Error('No matching VEYLOCK workspace found at this address on Robinhood mainnet.');
  const contract = new Contract(workspace, artifact.abi, provider);
  const s = await contract.schedules(id, { blockTag: block.number });
  if (s.total === 0n) throw Error('Schedule not found in this workspace. Check the schedule ID.');
  const token = new Contract(s.token, ['function decimals() view returns(uint8)', 'function symbol() view returns(string)'], provider);
  const metadata = await readTokenMetadata({ decimals: () => token.decimals({ blockTag: block.number }), symbol: () => token.symbol({ blockTag: block.number }) }, s.token);
  const row = { id: String(id), workspace, token: s.token, creator: s.creator, beneficiary: s.beneficiary, total: s.total.toString(), released: s.released.toString(), start: Number(s.start), cliff: Number(s.cliff), end: Number(s.end), ...metadata };
  const vested = vestedAt(row, Number(block.timestamp));
  return { ...row, vested: String(vested), claimable: String(vested - s.released), status: statusOf(row, Number(block.timestamp)), blockNumber: block.number, blockTime: Number(block.timestamp) };
}