class Runner
{
      constructor(obj)
      {
            if (Runner.validators === undefined)
            {
                  Runner.validators = 
                  new NoValidation()
                  ;
            }
            if (Runner.crossValidators === undefined)
            {
                  Runner.crossValidators = 
                  new NoValidation()
                  ;
            }
            if (obj != null)
            {
                  //console.log("Assigning " + JSON.stringify(obj) + " to a Runner");
                  Object.assign(this, obj);
            }
      }
      isParentOf(anObject)
      {
            return anObject.runnerId == this.id;
      }
      validate(result)
      {
            console.log("Validating " + JSON.stringify(this));
            try
            {
                  var ok = Runner.validators.validate(this, result);
                  console.log(ok + JSON.stringify(result));
                  return ok;
            }
            catch(err)
            {
                  console.log(err);
                  return true;
            }
      }
      crossValidate(other, result)
      {
            console.log("Cross-validating " + JSON.stringify(this) + " with " + JSON.stringify(other));
            try
            {
                  var ok = Runner.crossValidators.validate(this, other, result);
                  console.log(ok + JSON.stringify(result));
                  return ok;
            }
            catch(err)
            {
                  console.log(err);
                  return true;
            }
      }
    
    iconTD(mini, info) {
		var caption = this.name + (info !== null && info !== '' ? ' ' + info : '');
		var html = '';
		
		if (mini) {
			html += '<TD ONCLICK="location.href = \'/' + this.id+ '/\';" WIDTH=30 CLASS=runnerIconMini>';
			html += this.iconIMG(true, caption);
		} else {
			html += '<TD ONCLICK="location.href = \'/' + this.id+ '/\';" WIDTH=80 CLASS=runnerIcon>';
			html += this.iconIMG(false, caption);
			html += '<BR>' + caption;
		}
		html += '</TD>';

		return html;
	}

    iconIMG(mini, caption) {
		if (mini) {
			return '<IMG ONCLICK="location.href = \'/' + this.id+ '/\';" STYLE="border-radius:4pt" BORDER=0 SRC=' + this.thumb() + ' WIDTH=24 HEIGHT=24 TITLE="' + caption + '">';
		} else {
			return '<IMG ONCLICK="location.href = \'/' + this.id+ '/\';" STYLE="border-radius:10pt" BORDER=0 SRC=' + this.thumb() + ' WIDTH=64 HEIGHT=64 TITLE="' + caption + '">';
		}
	}

	thumb() {
		if (this.photoId === null) {
			return this.iconFileName;
		} else {
			return '/photo/thumb/' + this.photoId +'.png';
		}
	}
		
	icon() {
		if (this.photoId === null) {
			return this.iconFileName;
		} else {
			return '/photo/icon/' + this.photoId +'.png';
		}
	}
}

function loadRunnerList(url, addCallback, doneCallback, data)
{
  console.log((data ? 'POST' : 'GET') + ' ' + url + (data ? data : ''));
  var req = new XMLHttpRequest();
  req.onreadystatechange = function() {
          if (this.readyState == 4 && this.status == 200)
          {
            	  var theRunnerList = [];
            	  var rawRunnerList = JSON.parse(this.responseText);
            	  rawRunnerList.forEach( function (rawRunner)
            	  {
                		  var aRunner = new Runner(rawRunner);
                		  theRunnerList.push(aRunner);
                          addCallback(aRunner);
                	  });
                	  doneCallback(theRunnerList);
              }
          };
          req.open(data ? 'POST' : 'GET', url, true);
          req.setRequestHeader("Content-Type", "application/json");
          req.send(data);
    }
    
    function loadRunner(url, doneCallback)
    {
          var request = new XMLHttpRequest();
          request.open('GET', url, false);  // `false` makes the request synchronous
          request.send(null);
          if (request.status === 200)
          {
            	  doneCallback(new Runner(JSON.parse(request.responseText)));
          }
          else
          {
                console.log("Got error: " + request);
              }		
        }
        
        function loadAndReturnRunner(url)
        {
              var request = new XMLHttpRequest();
              request.open('GET', url, false);  // `false` makes the request synchronous
              request.send(null);
              if (request.status === 200)
              {
                	  return new Runner(JSON.parse(request.responseText));
              }
              else
              {
                    console.log("Got error: " + request);
                    return null;
              }
        }
        
        function loadRunnerListInto(url, selectElementName, doneCallback)
        {
              console.log('url = ' + url);
              var RunnerSelector = document.getElementById(selectElementName);
              var req = new XMLHttpRequest();
              req.onreadystatechange = function() {
                      if (this.readyState == 4 && this.status == 200)
                      {
                        	  var rawRunnerList = JSON.parse(this.responseText);
                        	  rawRunnerList.forEach( function (rawRunner)
                        	  {
                            		  var aRunner = new Runner(rawRunner);
                            		  var option = document.createElement("option");
                            		  option.value = aRunner.id;
                            		  option.text = aRunner.name;
                            		  RunnerSelector.add(option);
                            	      if (doneCallback) doneCallback(RunnerSelector);
                            	  });
                          }
                      };
                      req.open('GET', url, true);
                      req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
                      req.send();
                }
                
                function loadRunnerPage(url, doneCallback)
                {
                      console.log('url = ' + url);
                      var req = new XMLHttpRequest();
                      req.onreadystatechange = function() {
                              if (this.readyState == 4 && this.status == 200)
                              {
                                	  var pageResult = JSON.parse(this.responseText);
                                	  pageResult.contents = [];
                                	  pageResult.pageContents.forEach( function (rawRunner)
                                	  {
                                    		  var aRunner = new Runner(rawRunner);
                                    		  pageResult.contents.push(aRunner);
                                    	  });
                                    	  doneCallback(pageResult);
                                  }
                              };
                              req.open('GET', url, true);
                              req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
                              req.send();
                        }
                        function saveRunner(aRunner, url, okCallback, failCallback)
                        {
                              var xhr = new XMLHttpRequest();
                              xhr.open("POST", url, true);
                              xhr.setRequestHeader("Content-Type", "application/json");
                              xhr.onreadystatechange = function () {
                                      if (xhr.readyState === 4)
                                      {
                                              console.log(url + ": " + xhr.status + ": " + xhr.responseText);
                                        	  var result = JSON.parse(this.responseText);
                                              if (this.status == 200 && okCallback)
                                              {
                                                      okCallback(result);
                                              }
                                              if (this.status != 200 && failCallback)
                                              {
                                                      failCallback(result);
                                              }
                                      }
                                  };
                                  var data = JSON.stringify(aRunner);
                                  console.log("Sending:\n" + data);
                                  xhr.send(data);
                            }