package com.sothr.imagetools

import com.sothr.imagetools.image.{SimilarImages, ImageFilter, Image}
import com.sothr.imagetools.util.DirectoryFilter
import scala.collection.mutable
import java.io.File
import grizzled.slf4j.Logging

/**
 * Created by drew on 1/26/14.
 */
abstract class Engine extends Logging{

  val imageFilter:ImageFilter = new ImageFilter()
  val imageCache = AppConfig.cacheManager.getCache("images")

  def getAllImageFiles(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[File] = {
    val fileList = new mutable.MutableList[File]()
    if (directoryPath != null && directoryPath != "") {
      val directory:File = new File(directoryPath)
      val imageFilter = new ImageFilter
      if (directory.isDirectory) {
        val files = directory.listFiles(imageFilter)
        if (files != null) {
          fileList ++= files
          info(s"Found ${files.length} files that are images in directory: $directoryPath")
          if (recursive) {
            val directoryFilter = new DirectoryFilter
            val directories = directory.listFiles(directoryFilter)
            for (directory <- directories) {
                fileList ++= getAllImageFiles(directory.getAbsolutePath, recursive, recursiveDepth-1)
            }
          }
        }
      }
    }
    fileList.toList
  }

  /**
   * Get all images for a directory with hashes
   */
  def getImagesForDirectory(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[Image];
  
  /**
   * Get all similar images for a directory with hashes
   */
  def getSimilarImagesForDirectory(directoryPath:String, recursive:Boolean=false, recursiveDepth:Int=500):List[SimilarImages];
}