const { Server } = require('@ffgflash/mcserver.js')
const { createInterface } = require('readline/promises')

const version = '1.19.4'
const options = {
  minMemory: 512,
  softMaxMemory: 1024,
  maxMemory: 2048,
  javaPath: 'some/path/to/java/bin',
  path: 'some/path/to/my/server'
}
const server = new Server(version, options)
const rl = createInterface({ input: process.stdin, output: process.stdout })
let eula = false

function prompt() {
  rl.question('')
    .then(input => {
      if (!eula) {
        if (!server.canStop) return rl.close()
        const args = input.split(' ')
        const cmd = args.shift()?.toLowerCase()
        if (cmd === 'setprop') {
          server.log(`Setting property ${args[0]} to ${args[1]}`)
          return server.properties
            .setProperty(args[0], args[1])
            .then(() => server.execute('reload'))
        } else if (cmd === 'getprop') {
          return server.properties.getProperty(args[0]).then(prop => {
            if (!prop)
              server.warn(`Couldn't find a property by the name '${args[0]}'`)
            else server.log(`${prop.name} is ${prop.value}`)
            return
          })
        }
        return server.execute(input)
      }
      eula = false
      return server
        .acceptEula(input.toLowerCase() === 'y')
        .then(accept => (accept ? server.start() : rl.close()))
    })
    .catch(() => {})
    .finally(prompt)
}

rl.on('close', () => process.exit(0))

server.on('download', (file, current, total) => {
  const percent = ((current / total) * 100).toFixed(2)
  const currentMB = (current / 1048576).toFixed(2)
  const totalMB = (total / 1048576).toFixed(2)
  server.log(`Downloading file: ${percent}% (${currentMB}mb / ${totalMB}mb)`)
})

server.on('message', message => console.log(message.content))

server.on('stateUpdate', state => {
  if (state === 'CRASHED') console.log('Press Enter to Continue...')
  else if (state === 'STOPPED') {
    if (eula) return console.log('Do you accept the EULA? (Y/[N])')
    setTimeout(() => rl.close(), 1000)
  }
})

server.on('eula', () => (eula = true))

server.start().then(() => prompt())