// This script is for Directory Opus 11.5.5 or higher
// CoverArtDim column (CoverArt WxH)
// Uses AudioCoverArt's new width and height properties.
// Shows dimensions for a folder if it contains defined files.
var vAllowedFolderImages=null;
function ImageSize(itm){
  if (itm){
    var metatype=""+itm.Metadata; //Make sure we get a string. Without "" we get a object.
    if ((metatype=="audio")&&(itm.Metadata.audio.coverart>0)){
      var cnt=itm.Metadata.audio.coverart;
      var curitm;
      if(cnt>1){
        var enm=[];
        var pos=0;
        var selwidth=0;
        var selheight=0;
        var enu = new Enumerator(itm.Metadata.audio.coverart);
        if (!enu.atEnd()){
          while (!enu.atEnd()){
            curitm=enu.item();
            enm[pos++]={width:curitm.width,height:curitm.height};
            enu.moveNext();
          }
        }
        for (var i=0;i<pos;i++){
          if ((enm[i])&&((enm[i].width*enm[i].height)>(selheight*selwidth))){
            selwidth=enm[i].width;
            selheight=enm[i].height;
          }
        }
        // If width and height is both 0/undefined then we don't have a supported coverart
        if ((!selwidth)&&(!selheight)) return null;

        return {width:selwidth,height:selheight,all:enm};
      } else{
        curitm=itm.Metadata.audio.coverart(0);
        // If width and height is both 0/undefined then we don't have a supported coverart
        if ((!curitm.width)&&(!curitm.height)) return null;
        return {width:curitm.width,height:curitm.height,all:null};
      }
    } else if (metatype=="image"){
      return {width:itm.Metadata.image.picwidth,height:itm.Metadata.image.picheight,all:null};
    }
  }
  return null;
}

// Called by Directory Opus to initialize the script
function OnInit(initData){
  initData.name = "ColCoverArtDimensions2";
  initData.desc = "Add a column to show the dimensions of coverart or image";
  initData.copyright = "myarmor";
  initData.min_version="11.5.5";
  initData.version = "1.03";
  initData.default_enable = false;

  var col;
  col = initData.AddColumn();
  col.name = "CoverArtDim";
  col.method = "OnCoverArtDim";
  col.label = "CoverArt WxH";
  col.autogroup = true;
  col.autorefresh=true;
  col.justify = "right";
  initData.config.allowedFolderImages=DOpus.NewVector('cover.jpg','folder.jpg');
  return false;
}

function AllowItem(item){
  if (!vAllowedFolderImages) return false;
  var len;
  len=vAllowedFolderImages.count;
  if (len==0) return false;
  for (var i=0;i<len;i++){
    if (vAllowedFolderImages(i).toLowerCase()==item.name.toLowerCase()){
      return true;
    }
  }
  return false;
}

function FindFolderArt(itm){
  var folderEnum=DOpus.FSUtil.ReadDir(itm.realpath);
  var foldername=itm.name.toLowerCase();
  if (!folderEnum.complete){
    var curitm;
    while (!folderEnum.complete){
      curitm=folderEnum.Next();
      if ((!curitm.is_dir)&&(AllowItem(curitm))){
        return curitm;
      }
    }
  }
}
// Handler for the CoverArtDim column
function OnCoverArtDim(scriptColData){
  if (scriptColData.col!="CoverArtDim") return;
  var dims=null;
  var bIsDir;
  if (scriptColData.item.is_dir) {
    bIsDir=true;
    vAllowedFolderImages=Script.config.allowedFolderImages;
    var itm=FindFolderArt(scriptColData.item);
    if (itm){
      dims=ImageSize(itm);
    }
  } else{
    dims=ImageSize(scriptColData.item);
  }
  if (dims){
    scriptColData.value=dims.width+"x"+dims.height;
    scriptColData.sort=dims.width;
  } else if (!bIsDir){
    scriptColData.value="---";
    scriptColData.sort=9999999;
  }
}