//
// rotch_blog_roll.js contains the functions to pull and display rss feeds. Requires pages to link to http://www.google.com/jsapi.
//

google.load("feeds", "1");

function stringFilter (input) { // This is the filtering function to remove invalid characters
	var returnString = input;
	var i = 0;
	var characterArray = [	"�", "",
							"ç", "\u00E7",
							"’", "\u0027",
							"‘", "\u0027",
							"”", "\u201D",
							"“", "\u201C",
							"&", "\u0026",
							"—", "\u2014",
							" ", " ",
							"ø", "\u00F8",
							""", "\u0022"]; //these are the strings to swap
	
	for (i; i < characterArray.length; i = i+2){
		var regexToFind = new RegExp(characterArray[i], "gi");// regex constructor to find strings in feed text
		returnString = returnString.replace(regexToFind, characterArray[i+1]);
		};

	return returnString;
}


function initialize() { // This loads the rss feed. URL is hardwired in this function  
	  
  var bsa_custom_feed = new google.feeds.Feed("http://urbanwaterfront.blogspot.com/feeds/posts/default?alt=rss"); // this is the feed to fetch
  bsa_custom_feed.setNumEntries(1); //sets the number of entries for this feed
  
  bsa_custom_feed.load(function(result) {
  
  var filteredTitle = "";
  
	if (!result.error) {
	  var container = document.getElementById("rotch_news_feed_hook"); // this is the hardwired div id hook to the html page
  
	  for (var i = 0; i < result.feed.entries.length; i++) {
  
		var entry = result.feed.entries[i];
		var attributes = ["title", "link", "contentSnippet"]; //these are the data pairs to fetch
		var div = document.createElement("div");
	
		for (var j = 0; j < attributes.length; j++) {
	
			var div = document.createElement("div"); // creates new feed entry
			var attribute_class = document.createAttribute("class"); //creates class name for feed entry
	
				switch(j) // this decides what to do when we receive a piece a data
				{
				case 0: // feed entry title
					filteredTitle = stringFilter(entry.title); // call function to filter odd characters
					
					attribute_class.nodeValue = "rotch_custom_feed_title";
					var div_link = document.createElement("a");
					var attribute_div_link = document.createAttribute("href"); //creates href value for title
					attribute_div_link.nodeValue = entry[attributes[j+1]]; // sets href to the feed link
					div_link.setAttributeNode(attribute_div_link); // adds the new href to the <a> tag
					div_link.appendChild(document.createTextNode(filteredTitle)); //add feed entry title text to the div
					div.appendChild(div_link); // add the constructed <a> tag to the entry div
					container.appendChild(div); // add the constructed div tag to the container div
					div.setAttributeNode(attribute_class); // adds class name attribute to entry div
					break;
				case 1: // do nothing since we've reached the link data and we don't need to display that
					break;
				case 2: // feed entry snippet
					break; //since we only want the headline for now, I've commented out the remaining code
					//filteredSnippet = stringFilter(entry.contentSnippet); // call function to filter odd characters
				
					//attribute_class.nodeValue = "rotch_custom_feed_snippet";
					//container.appendChild(div);
					//div.setAttributeNode(attribute_class); // adds class name attribute to entry div
					
					//if (filteredSnippet==="") { // this if statement will add some text if the description is empty... can remove after Rotch blog entry is taken away
					//	filteredSnippet="View images from the 2009 Rotch Scholarship winner, Brandon Shigeta.";
					//}
					
					//div.appendChild(document.createTextNode(filteredSnippet));
					//break;
				}
		}
	  }
	}
  }); // end initialize function
		 
}

google.setOnLoadCallback(initialize); // Init function to call rss feed functions