require('bare-process/global')
const test = require('brittle')
const { HyperP2PAutobaseViewSync, PROTOCOL } = require('../index.js')

test('exports', (t) => {
  t.ok(HyperP2PAutobaseViewSync)
  t.is(PROTOCOL, 'autobase-view-sync/v1')
})

test('publishView mergeRemoteView', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  m.attach({ open: async () => {} })
  m.publishView(3)
  t.is(m.currentView().version, 3)
  const v5 = m.publishView(5)
  t.ok(m.mergeRemoteView({ version: 5, hash: v5.hash, at: Date.now() }))
  t.is(m.currentView().version, 5)
  await m.close()
})

test('merge rejects regression', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  m.publishView(10)
  t.not(m.mergeRemoteView({ version: 2, hash: 'x', at: 1 }))
  await m.close()
})

test('validation', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  try { m.publishView(-1) } catch (e) { t.ok(e) }
  await m.close()
})

test('syncStatus snapshot', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  m.publishView(2)
  t.is(m.syncStatus(5), 'behind')
  t.is(m.snapshot().view.version, 2)
  await m.close()
})

test('getStats', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  t.is(m.getStats().protocol, 'autobase-view-sync/v1')
  t.is(m.getStats().mode, 'autobase')
  await m.close()
})

test('viewHash ageMs behindBy', async (t) => {
  const m = new HyperP2PAutobaseViewSync()
  m.publishView(4)
  t.ok(m.viewHash())
  t.ok(m.ageMs() >= 0)
  t.is(m.behindBy(10), 6)
  t.ok(m.isAtLeast(4))
  await m.close()
})