util.js

var curl = require('curl')
var cheerio = require('cheerio')
var http = require('http')

exports.getCardRuneInfo = function(cardrune, callback) {

  cardrune = cardrune.toLowerCase()

  var url = 'http://bindingofisaacrebirth.gamepedia.com/Cards_and_Runes'
  curl.get(url, null, (err, res, body) => {
    const $ = cheerio.load(body)
    /* Get all of the cards/runes/consumables on the page */
    var cards_runes = $('tr', 'table').toArray()
    var temp_cardrune = null
    var index = i
    /* NOTE: Indices 3-24 are tarot cards
             Indices 26-34 are playing cards
             Indices 36-46 are special cards
             Indices 48-51 are left-pointing runes
             Indices 53-57 are right-pointing runes
             Index 59 is the Black Rune
             Indices 61-62 are the consumables */
    for (var i = 0; i < cards_runes.length; i++) {
      temp_cardrune = $(cards_runes[i]).text().split('\n')
      if (cardrune == temp_cardrune[1].toLowerCase().trim()) {
        console.log('Found card/rune: ' + cardrune + ' @ ' + i)
        index = i
        break
      }
    }

    if (temp_cardrune == null) {
      callback('card/rune not found', null)
      return
    }

    /* NOTE: [1] is the card/rune name
             [3] is the ID
             [7] is the message
             [9] is the description/effect */

    var description = temp_cardrune[9].trim()
    /* Runes have slightly different table formats */
    if (index >= 48 && index <= 59) {
      description = temp_cardrune[11].trim()
    }


    var res = {
      speech: description,
      displayText: description,
      source: 'bindingofisaacrebirth.gamepedia.com/'
    }
    callback(null, res)

  })

}

exports.getDiceRoomInfo = function(num, callback) {

  num = parseInt(num)

  if (num < 1 || num > 6) {
    callback('number invalid', null)
  }

  var url = 'http://bindingofisaacrebirth.gamepedia.com/Dice_Room'
  curl.get(url, null, (err, res, body) => {
    const $ = cheerio.load(body)
    /* First, get the list of all of the dice rooms */
    var dice_rooms = $('li', 'div .mw-content-ltr').toArray()
    var text = $(dice_rooms[num+3]).text()
    text = text.substring(text.indexOf('-') + 2)

    /* Prepare the JSON for return */
    var res = {
      speech: text,
      displayText: text,
      source: 'bindingofisaacrebirth.gamepedia.com/',
    }
    callback(null, res)
    return
  })
}

exports.getItemInfo = function(item, callback) {

  /* Convert the item to lower case and convert all ASCII-160's to ASCII-32's */
  item = item.toLowerCase()
  while (1) {
    var new_item = item.replace(String.fromCharCode(160), ' ')
    if (new_item == item) { break }
    else { item = new_item }
  }

  /* Corner case: <3 */
  if (item == 'less than 3') {
    item = '<3'
    console.log('Corner case: converting "less than 3" to "<3"')
  }
  /* Corner case: Odd Mushrooms */
  if (item == 'odd mushroom large') { item = 'odd mushroom (large)'}
  if (item == 'odd mushroom thin') { item = 'odd mushroom (thin)'}


  var url = 'http://bindingofisaacrebirth.gamepedia.com/item'
  curl.get(url, null, (err, res, body) => {
    const $ = cheerio.load(body)
    /* First, get the list of all of the items */
    var actives = $('tr', 'table[data-description="Activated Collectibles"]').toArray()
    var passives = $('tr', 'table[data-description="Passive Collectibles"]').toArray()

    /* Second search through each list to find the specified item */
    var index = -1
    var isActive = false
    var isPassive = false

    /* Loop through the active items */
    for (var i = 1; i < actives.length; i++) {
      var temp_name = $(actives[i]).text().split('\n')[1].toLowerCase().trim()
      if (item == temp_name) {
        console.log('Found active item: ' + temp_name)
        isActive = true
        index = i
        item = $(actives[index]).text().split('\n')
        break
      }
    }

    /* Loop through the passive items, if necessary */
    if (!isActive) {
      for (var i = 1; i < passives.length; i++) {
        var temp_name = $(passives[i]).text().split('\n')[1].toLowerCase().trim()
        if (item == temp_name) {
          console.log('Found passive item: ' + temp_name)
          isPassive = true
          index = i
          item = $(passives[index]).text().split('\n')
          break
        }
      }
    }

    /* Return an error if the item is not found */
    if (index == -1) {
      callback('item (' + item + ') not found', null)
      return
    }

    /* Prepare the JSON for return */
    var res = {
      speech: item[9].trim(),
      displayText: item[9].trim(),
      source: 'bindingofisaacrebirth.gamepedia.com/',
    }
    callback(null, res)
    return

    /* NOTE: after .text().split('\n') on a table item:
              -- Name = [1]
              -- ID = [3]
              -- Icon = [5]
              -- Quote = [7]
              -- Description = [9]
              -- Recharge = [11] (active items only) */
  })

}

exports.getPandorasBoxInfo = function(floor, gamemode, callback) {

  var message = ''

  switch (gamemode) {
    case 'normal':
    case 'hard':
      switch (floor) {
        case 'basement i':
        case 'cellar i':
        case 'burning basement i':
        case 'basement xl':
        case 'cellar xl':
        case 'burning basement xl':
        case 'the basement':
          message = 'Spawns 2 soul hearts.'
          break
        case 'basement ii':
        case 'cellar ii':
        case 'burning basement ii':
          message = 'Spawns 2 keys and 2 bombs.'
          break
        case 'caves i':
        case 'catacombs i':
        case 'flooded caves i':
        case 'caves xl':
        case 'catacombs xl':
        case 'flooded caves xl':
        case 'the caves':
          message = 'Spawns 1 Boss Room item.'
          break
        case 'caves ii':
        case 'catacombs ii':
        case 'flooded caves ii':
          message = 'Spawns 1 Boss Room item and 2 soul hearts.'
          break
        case 'depths i':
        case 'necropolis i':
        case 'dank depths i':
        case 'depths xl':
        case 'necropolis xl':
        case 'dank depths xl':
        case 'the depths':
          message = 'Spawns 4 soul hearts.'
          break
        case 'depths ii':
        case 'necropolis ii':
        case 'dank depths ii':
          message = 'Spawns 20 coins.'
          break
        case 'womb i':
        case 'utero i':
        case 'scarred womb i':
        case 'womb xl':
        case 'utero xl':
        case 'scarred womb xl':
        case 'the womb':
          message = 'Spawns 2 Boss Room items.'
          break
        case 'womb ii':
        case 'utero ii':
        case 'scarred womb':
          message = 'Spawns The Bible.'
          break
        case 'sheol':
          message = 'Spawns 1 Devil Room item and 1 black heart.'
          break
        case 'cathedral':
          message = 'Spawns 1 Angel Room item and 1 eternal heart.'
          break
        case 'chest':
          message = 'Spawns 1 coin.'
          break
        default:
          message = 'Nothing.'
      }
      break
    case 'greed':
    case 'greedier':
      switch (floor) {
        case 'the basement':
          message = 'Spawns 2 soul hearts.'
          break
        case 'the caves':
          message = 'Spawns 2 keys and 2 bombs.'
          break
        case 'the depths':
          message = 'Spawns 1 Boss Room item.'
          break
        case 'the womb':
          message = 'Spawns 1 Boss Room item and 2 soul hearts.'
          break
        case 'sheol':
          message = 'Spawns 4 soul hearts.'
          break
        case 'the shop':
          message = 'Spawns 20 coins.'
          break
        case 'ultra greed':
          message = 'Spawns 2 Boss Room items.'
          break
        default:
          message = 'Nothing'
        break
      }
    default:
      message = 'Nothing.'
  }

  var response = {
    speech: message,
    displayTest: message,
    source: 'bindingofisaacrebirth.gamepedia.com'
  }

  callback(null, response)

}

exports.getPillInfo = function(pill, callback) {

  var url = 'http://bindingofisaacrebirth.gamepedia.com/Pills'
  curl.get(url, null, (err, res, body) => {
    const $ = cheerio.load(body)
    /* First, get the list of all of the items */
    var pills = $('tr', 'table').toArray()
    var temp_pill = null

    /* NOTE: Pills are indices 3-30, 32-42, 44-51 */
    for (var i = 3; i < 52; i++) {
      if (i == 31 || i == 43) { continue }
      temp_pill = $(pills[i]).text().split('\n')
      if (pill == temp_pill[1].toLowerCase().trim()) { break }
      else { temp_pill = null }
    }

    if (!temp_pill) {
      callback('pill not found', null)
      return
    }

    /* Corner case: Amnesia */
    if (pill == 'amnesia') {
      temp_pill[2] = temp_pill[2].replace('?', 'question mark')
    }

    /* Prepare the JSON for return */
    var res = {
      speech: temp_pill[2],
      displayText: temp_pill[2],
      source: 'bindingofisaacrebirth.gamepedia.com/',
    }
    callback(null, res)
    return
  })
}

exports.getSacrificeRoomInfo = function(num, callback) {

  num = parseInt(num)
  if (num > 12) { num = 12 }
  else if (num == 1) { num = 2 }

  var message = ''

  switch (num) {
    case 2:
      message = '50% chance of nothing. 50% chance to spawn 1 penny.'
      break
    case 3:
      message = '33% chance of nothing. 67% chance to increase chance of receiving Angel Room over a Devil room for the current floor.'
      break
    case 4:
      message = '50% chance of nothing. 50% chance to spawn 1 random chest.'
      break
    case 5:
      message = '33% chance to spawn 3 coins. 67% chance to increase chance of receiving an Angel Room over a Devil room for the current floor.'
      break
    case 6:
      message = '33% chance to teleport to the Devil or Angel Room. 67% chance to spawn 1 random chest.'
      break
    case 7:
      message = 'If you have taken a Devil Deal, 100% chance to spawn a soul heart. If not, 33% chance to spawn one random Angel Room pedestal item and 67% chance to spawn a soul heart.'
      break
    case 8:
      message = '100% chance to spawn 6 troll bombs.'
      break
    case 9:
      message = '100% chance to spawn Uriel.'
      break
    case 10:
      message = '50% chance to spawn 7 soul hearts. 50% chance to spawn 30 pennies.'
      break
    case 11:
      message = '100% chance to spawn Gabriel.'
      break
    case 12:
      message = '50% chance of nothing. 50% chance to teleport directly to the Dark Room.'
      break
    default:
      message = 'Nothing.'
  }

  var response = {
    speech: message,
    displayText: message,
    source: 'bindingofisaacrebirth.gamepedia.com/'
  }

  callback(null, response)

}

exports.getTrinketInfo = function(trinket, callback) {

  /* Convert the trinket to lower case and convert all ASCII-160's to ASCII-32's */
  trinket = trinket.toLowerCase()
  while (1) {
    var new_trinket = trinket.replace(String.fromCharCode(160), ' ')
    if (new_trinket == trinket) { break }
    else { trinket = new_trinket }
  }

  var url = 'http://bindingofisaacrebirth.gamepedia.com/trinket'
  curl.get(url, null, (err, res, body) => {
    const $ = cheerio.load(body)
    /* First, get the list of all of the items */
    var trinkets = $('tr', 'table[data-description="Trinkets"]').toArray()

    /* Second search through the list to find the specified item */
    var index = -1

    /* Loop through the trinkets */
    for (var i = 1; i < trinkets.length; i++) {
      var temp_name = $(trinkets[i]).text().split('\n')[1].toLowerCase().trim()
      if (trinket == temp_name) {
        console.log('Found trinket: ' + temp_name)
        index = i
        trinket = $(trinkets[index]).text().split('\n')
        break
      }
    }

    console.log('Trinket index: ' + index)
    console.log('Comparing: ' + (index == -1))

    /* Return an error if the item is not found */
    if (index == -1) {
      console.log('No trinket found: sending error...')
      callback('trinket (' + trinket + ') not found', null)
      return
    }

    console.log('Preparing JSON to return...')

    /* Prepare the JSON for return */
    var res = {
      speech: trinket[9].trim(),
      displayText: trinket[9].trim(),
      source: 'bindingofisaacrebirth.gamepedia.com/',
    }
    callback(null, res)
    return

  })

}

exports.sendError = function(err, res) {
  console.error('Cannot process request', err)
  res.status(400).json({
    status: {
      code: 400,
      errorType: err.message
    }
  })
}