var progress_bar = document.getElementById('progress_bar');
var progress_text = document.getElementById('progress_text');

var Module = {
  preRun: [],
  postRun: [],
  print: (function() {
    return function(text) {
      if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
      // These replacements are necessary if you render to raw HTML
      //text = text.replace(/&/g, "&");
      //text = text.replace(/</g, "&lt;");
      //text = text.replace(/>/g, "&gt;");
      //text = text.replace('\n', '<br>', 'g');
      console.log(text);
    };
  })(),
  printErr: function(text) {
    if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
    if (0) { // XXX disabled for safety typeof dump == 'function') {
      dump(text + '\n'); // fast, straight to the real console
    } else {
      console.error(text);
    }
  },
  canvas: (function() {
    var canvas = document.getElementById('canvas');

    // As a default initial behavior, pop up an alert when webgl context is lost. To make your
    // application robust, you may want to override this behavior before shipping!
    // See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
    canvas.addEventListener("webglcontextlost", function(e) { alert('WebGL context lost. You will need to reload the page.'); e.preventDefault(); }, false);

    return canvas;
  })(),
  setStatus: function(text) {
    var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
    if (m) {
      text = m[1];
      var perc = parseInt(m[2]) / parseInt(m[4]) * 100;
      if (perc > 0) {
        progress_bar.style.width = perc + '%';
        progress_bar.innerHTML = perc.toFixed(1) + '%';
      }
    } else {
      progress_bar.innerHTML = '';
    }
    progress_text.innerHTML = text;
  },
  totalDependencies: 0,
  monitorRunDependencies: function(left) {
    this.totalDependencies = Math.max(this.totalDependencies, left);
    Module.setStatus('Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')');
  }
};
Module.setStatus('Downloading...');
window.onerror = function() {
  Module.setStatus('Exception thrown, see JavaScript console');
  Module.setStatus = function(text) {
    if (text) Module.printErr('[post-exception status] ' + text);
  };
};