[Studio Kura]各教室のページの背景をflickrダウンロードして、軽くする

bgimgdl.coffee

fs = require 'fs'
request = require 'request'
gm = require 'gm'
  .subClass {imageMagick: true}

filenames = ['bg-title.jpg', 'bg-otona.jpg', 'bg-kodomo.jpg', 'bg-denshi.jpg', 'bg-timetable.jpg', 'bg-map.jpg']
filenamesg = ['bgg-title.jpg', 'bgg-otona.jpg', 'bgg-kodomo.jpg', 'bgg-denshi.jpg', 'bgg-timetable.jpg', 'bgg-map.jpg']
filename_index = -1

lineReader = require 'readline'
  .createInterface {
    input: fs.createReadStream 'bgimgdl-list.txt'
  }

download = (uri, filename, callback) ->
  if uri
    request.head uri, (err, res, body) ->
      console.log 'content-length:', res.headers['content-length']
      console.log 'content-type:', res.headers['content-type']
      request uri
        .pipe fs.createWriteStream filename
          .on 'close', callback

lineReader.on 'line', (line) ->
  filename_index = filename_index + 1
  if !fs.existsSync filenames[filename_index]
    console.log 'downloading: ' + filenames[filename_index]
    download line, filenames[filename_index], ->
      console.log 'done'
  if !fs.existsSync filenamesg[filename_index] && fs.existsSync filenames[filename_index] 
    gm filenames[filename_index]
      .quality 40
      .write filenamesg[filename_index], (err)->
        if err
          console.log 'error converting quality: ' + err
        else
          console.log 'quality converted correctly'