var im = require('imagemagick');
var exec = require('child_process');



module.exports.ImageConver = (ImgOpen,ImgSave,hablone,f) => {
 var maskShab = "trash/"+parseInt((Math.random()*10000000))+".png";


 trueImage(ImgOpen,(result) => {
  if(result){
   scaleImage(ImgOpen,(P) => {
    resizeMask(hablone,maskShab,P,() => {
     imageCorp(ImgOpen,ImgSave,P,() => {
      execImage(ImgSave,ImgSave,maskShab,() => {
       f(true);
      });
     });
    });
   });
  }else{
   f(false);
  }
 });
}




function trueImage(ImgOpen,f){
 im.identify(ImgOpen, (err, features) => {
  if(err){
   f(false);
  }else{
   f(true);
  }
 });
}



function scaleImage(ImgOpen,f){
 im.identify(ImgOpen, (err, features) => {
  if(err){
   console.log("scale: error");
  }else{
   var w = features.width;
   var h = features.height;
   var P = w;
   if(w>h) P = w;
   if(w<h) P = h;
   if(w==h) P = w;
   f(P);
  }
 });
}

function resizeMask(hablone,habloneConvert,P,f){
 im.resize({srcPath: hablone,dstPath: habloneConvert,width: parseInt(P)},(err, stdout, stderr) => {
  if(err){
     console.log("resize: error");
  }else{
    f();
  }
 });
}

function imageCorp(ImgOpen,ImgSave,P,f){
 im.crop({srcPath: ImgOpen,dstPath: ImgSave,width: parseInt(P),height: parseInt(P),quality: 1,gravity: "center"},(err, stdout, stderr)  => {
  if(err){
  console.log("crop: error");
  }else{
   f();
  }
 });
}

function execImage(ImgSave,ImgSave,hablone,f){
 var command = ['composite','-gravity', 'center', '-quality', 100,hablone,ImgSave,ImgSave];
 exec.exec(command.join(' '), (err, stdout, stderr) => {
  if(err){
   console.log("exec: error");
  }else{
   f();
  }
 });
}