buildcache.js

var sharp = require('sharp')
var path = require('path')
var async = require('async')
var config = require('./config')()
var fs = require('fs')

try {
  var cache = require(config.cache_metadata_path)
} catch (error) {
  var cache = {}
}

sharp.cache(0)

var imageProcessor = require('./imageProcessor')(sharp, path, config, fs)
var images = require(config.image_store_path)

fs.mkdir(config.cache_folder_path, function (error) {
  var index = process.argv[2] || 0
  console.log('Start: %s', index)

  if (index > 0) {
    images.splice(0, index)
  }

  async.eachLimit(images, 5, function (image, next) {
    var width = 458
    var height = 354
    imageProcessor.getProcessedImage(width, height, null, false, false, image.filename, false, function (error, imagePath) {
      if (error) {
        console.log('filePath: ' + image.filename)
        console.log('imagePath: ' + imagePath)
        console.log('error: ' + err)
      }

      console.log('%s done', image.id)
      cache[imagePath] = new Date()
      next()
    })
  }, function (error) {
    fs.writeFile(config.cache_metadata_path, JSON.stringify(cache), 'utf-8', function (error) {
      console.log('Done')      
    })
  })
})