# Description:
#   Show random filewise invisible
#
# Dependencies:
#   "cheerio": "0.10.5"
#
# Configuration:
#   None
#
# Commands:
#   hubot filmwise me - a randomly selected filmwise invisible
#   hubot filmwise bomb <number> - filmwise invisible explosion!
#   hubot filmwise answer (or cheat) - show the answer to the last filmwise shown
#   hubot filmwise guess <answer> - guess the answer
#
# Author:
#   mwongatemma, lroggendorff

$ = require "cheerio"

module.exports = (robot) ->
  robot.respond /filmwise\s*(?:me)?$/i, (msg) ->
    robot.brain.data.lastfilm = show_filmwise msg, 1

    msg.send robot.brain.data.lastfilm.replace
    answerUrl = robot.brain.data.lastfilm.replace /\/image_0\d+\.jpg$/, "a.shtml"
    answerImgSrc = robot.brain.data.lastfilm.match /(invisible_\d+\/image_0\d+)\.jpg$/
    answerImgSrc = answerImgSrc[1] + "a.jpg"
    msg.http(answerUrl)
      .get() (err, res, body) ->
        robot.brain.data.lastfilmanswer = $(body).find('img[src$="' + answerImgSrc + '"]').next().next().text()

  robot.respond /filmwise\s+(?:bomb)\s*(?:me)?\s*(\d+)?/i, (msg) ->
    count = msg.match[1] || 5
    robot.brain.data.lastfilm = show_filmwise msg, count
  robot.respond /filmwise\s+(?:guess)\s*(.+)?/i, (msg) ->
    # The double quotes aren't stripped from the answer web page
    guess = '"' + msg.match[1] + '"'
    if robot.brain.data.lastfilmanswer.toLowerCase() == guess.toLowerCase()
      msg.send msg.message.user.name + ': You guessed ' + guess + ' correctly!'
    else
      msg.send msg.message.user.name + ': You guessed ' + guess + ' incorrectly!'
  robot.respond /filmwise\s+(?:answer|cheat)?$/i, (msg) ->
    title = ""
    answerUrl = robot.brain.data.lastfilm.replace /\/image_0\d+\.jpg$/, "a.shtml"
    answerImgSrc = robot.brain.data.lastfilm.match /(invisible_\d+\/image_0\d+)\.jpg$/
    answerImgSrc = answerImgSrc[1] + "a.jpg"
    msg.http(answerUrl)
      .get() (err, res, body) ->
        msg.send $(body).find('img[src$="' + answerImgSrc + '"]').next().next().text()
    msg.send robot.brain.data.lastfilm.replace /\.jpg$/, "a.jpg"
show_filmwise = (msg, count) ->
  WEEK = 1000 * 60 * 60  * 24 * 7
  # This is the first week of images currently available.
  d1 = new Date('09/13/2010')
  d2 = new Date()
  passed = Math.floor((d2.getTime() - d1.getTime()) / WEEK)
  lastFilm = ""

  for i in [1..count]
    week = 501 + Math.floor(Math.random() * passed)
    image = 1 + Math.floor(Math.random() * 8)
    lastFilm = "http://filmwise.com/invisibles/invisible_" + (String) week + "/image_0" + (String) image + ".jpg"
    msg.send lastFilm

  return lastFilm