const WebSocket = require('ws')

const DRAW_VEL = 2.38
const base = 'ws://127.0.0.1:3000/ws?room=SCOREQA' + Math.floor(Math.random() * 10000)

function throwFor(ws, team, broom_x, broom_y, velocity = DRAW_VEL, curl = 0, friction = 1.0) {
  ws.send(JSON.stringify({ type: 'throw', team, broom_x, broom_y, velocity, curl, friction }))
}

function connect(name) {
  return new Promise((resolve, reject) => {
    const ws = new WebSocket(base)
    const messages = []
    ws.on('message', (data) => {
      const msg = JSON.parse(data.toString())
      messages.push(msg)
      if (msg.type === 'joined') resolve({ ws, messages })
    })
    ws.on('error', reject)
  })
}

function waitFor(condFn, timeout = 5000) {
  const start = Date.now()
  return new Promise((resolve, reject) => {
    const check = () => {
      if (condFn()) return resolve(undefined)
      if (Date.now() - start > timeout) return reject(new Error('timeout'))
      setTimeout(check, 50)
    }
    check()
  })
}

function latestState(messages) {
  for (let i = messages.length - 1; i >= 0; i--) {
    if (messages[i].type === 'game_state') return messages[i]
  }
  return null
}

;(async () => {
  const p1 = await connect('p1')
  await waitFor(() => p1.messages.some(m => m.type === 'game_state'))
  let state = latestState(p1.messages)
  console.log('start turn', state.turn_team, 'hammer', state.hammer, 'stones_remaining', state.stones_remaining)

  const thrower1 = state.turn_team
  throwFor(p1.ws, thrower1, 0.2, 38.5, DRAW_VEL, 0, 1.0)
  await waitFor(() => p1.messages.some(m => m.type === 'trajectories'), 15000)
  await waitFor(() => {
    const s = latestState(p1.messages)
    return s && s.stones && s.stones.length >= 1 && s.phase === 'playing'
  }, 15000)
  await new Promise(r => setTimeout(r, 200))
  state = latestState(p1.messages)
  console.log('After first throw stones:', state.stones.length, 'remaining', state.stones_remaining)

  const thrower2 = state.turn_team
  throwFor(p1.ws, thrower2, -0.2, 38.5, DRAW_VEL, 0, 1.0)
  await waitFor(() => p1.messages.filter(m => m.type === 'trajectories').length >= 2, 15000)
  await waitFor(() => {
    const s = latestState(p1.messages)
    return s && s.stones && s.stones.length >= 2 && s.phase === 'playing'
  }, 15000)
  await new Promise(r => setTimeout(r, 200))
  state = latestState(p1.messages)
  console.log('Final stones', state.stones)
  console.log('scoreboard', state.scoreboard, 'stones_remaining', state.stones_remaining)
  p1.ws.close()
  process.exit(0)
})().catch(e => {
  console.error(e)
  process.exit(1)
})