require('bare-process/global')
const test = require('brittle')
const { HyperP2PCreditLedger, PROTOCOL } = require('../index.js')

test('exports', (t) => {
  t.ok(HyperP2PCreditLedger)
  t.is(PROTOCOL, 'credit-ledger/v1')
})

test('credit debit transfer', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('a', 100)
  m.openAccount('b', 0)
  m.transfer('a', 'b', 30)
  t.is(m.balance('a'), 70)
  t.is(m.balance('b'), 30)
  await m.close()
})

test('insufficient funds', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('a', 5)
  try { m.transfer('a', 'b', 10) } catch (e) { t.ok(e) }
  await m.close()
})

test('remote ledger entry', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('x', 0)
  m._onGossip({ type: 'ledger-entry', accountId: 'x', kind: 'credit', balance: 50, at: Date.now() })
  t.is(m.balance('x'), 50)
  await m.close()
})

test('getStats', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('z')
  t.ok(m.getStats().accounts >= 1)
  await m.close()
})

test('totalSupply and listAccounts', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('a', 10)
  m.openAccount('b', 20)
  t.is(m.totalSupply(), 30)
  t.ok(m.hasAccount('a'))
  t.alike(m.listAccounts().sort(), ['a', 'b'])
  await m.close()
})

test('topBalances accountSnapshot', async (t) => {
  const m = new HyperP2PCreditLedger()
  m.openAccount('a', 5)
  m.openAccount('b', 50)
  t.is(m.topBalances(1)[0].id, 'b')
  t.is(m.accountSnapshot('a').balance, 5)
  await m.close()
})