/**
* Ubiquity command to perform a 'Blended' search in Amazon Germany, UK, USA, Japan or Canada.
*/

/**
 * Core Type Extension
 * Now returns the index of the suggestion array as the data element 
*/
function ModNounType(name, expectedWords) {this._init(name, expectedWords);};
var F = function() {};
F.prototype = CmdUtils.NounType.prototype;
ModNounType.prototype = new F();
ModNounType.prototype.suggest = function(text, html) {
    var suggestions = [];
    if (typeof text != "string") {
        return [];
    }
    for (var x in this._expectedWords) {
        var word = this._expectedWords[x].toLowerCase();
        if (word.indexOf(text.toLowerCase()) > -1) {
            suggestions.push(CmdUtils.makeSugg(word, word, x));
        }
    }
    return suggestions;
}


CmdUtils.CreateCommand({
  name: "amazon-local",
  author: { name: "Gary Hodgson", homepage : "http://www.garyhodgson.com/", email : "contact@garyhodgson.com"},
  icon: "http://www.amazon.com/favicon.ico",
  description: "Adaption of the built-in Amazon command.  Perform a 'Blended' search in Amazon Germany, UK, USA, Japan or Canada.",
  help: "The search type used is 'Blended', and not limited to Books, however using 'Book' or 'DVD' in the search criteria seems to help narrow the results if needed.",
  homepage: "http://garyhodgson/ubiquity",
  license: "MPL",
  takes: {"keywords" : noun_arb_text},
  modifiers: {"from" : new ModNounType( "Country", {"de":"Germany", "co.uk":"UK", "com":"USA", "jp":"Japan", "ca":"Canada"} )},    
  
  preview: function(previewBlock, directObject, mods) {
	if(!directObject.text || directObject.text.length < 1) {
	  previewBlock.innerHTML = "Searches for items on Amazon";
	  return;
	}
    var country = mods.from.text || 'UK';    
    var locale = mods.from.data || 'co.uk';

	previewBlock.innerHTML = "Searching Amazon."+locale+" for items matching <b>" + directObject.summary + "</b>";

	var apiUrl = "http://ecs.amazonaws."+locale+"/onca/xml";

	var apiParams = {
	  Service: "AWSECommerceService",
	  AWSAccessKeyId: "1VDMBQXHG2NNSG2D0682",
	  Version: "2008-08-19",
	  Operation: "ItemSearch",
	  Condition: "All",
	  ResponseGroup: "ItemAttributes,Images",
	  SearchIndex: "Blended",
	  Keywords: directObject.text
	};

	jQuery.ajax({
	  type: "GET",
	  url: apiUrl,
	  data: apiParams,
	  dataType: "xml",
	  error: function() {
		previewBlock.innerHTML = "Error searching Amazon."+locale;
	  },
	  success: function(responseData) {
		const AMAZON_MAX_RESULTS = 20;

		responseData = jQuery(responseData);
		var items = [];

		responseData.find("Items Item").slice(0, AMAZON_MAX_RESULTS).each(function(itemIndex) {
		  var itemDetails = jQuery(this);
		  
		  var newItem = {
			title: itemDetails.find("ItemAttributes Title").text(),
			url: itemDetails.find("DetailPageURL").text()
		  };

		  if (itemDetails.find("ItemAttributes Author").length > 0) {
			newItem.author = itemDetails.find("ItemAttributes Author").text();
		  } else if (itemDetails.find("ItemAttributes Actor").length > 0) {
	  		newItem.author = itemDetails.find("ItemAttributes Actor").text();	
		  }

		  if(itemDetails.find("ItemAttributes ListPrice").length > 0) {
			newItem.price = {
			  amount: itemDetails.find("ItemAttributes ListPrice FormattedPrice").text(),
			  currency: itemDetails.find("ItemAttributes ListPrice CurrencyCode").text()
			};
		  }

		  if(itemDetails.find("SmallImage").length > 0) {
			newItem.image = {
			  src: itemDetails.find("SmallImage:first URL").text(),
			  height: itemDetails.find("SmallImage:first Height").text(),
			  width: itemDetails.find("SmallImage:first Width").text()
			};
		  }

		  items.push(newItem);
		});

		var previewData = {
			query: directObject.summary,
			numitems: responseData.find("Items TotalResults").text(),
			items: items
		};
		
		var w = CmdUtils.getWindowInsecure();
		var offset = w.outerHeight - w.innerHeight
		var h = (offset < w.innerHeight)? w.innerHeight - offset : w.innerHeight;
		
		var ptemplate = "Found ${numitems} items on Amazon."+locale+" matching <b>${query}</b>";
        ptemplate = "<div style=\"min-height:400px;max-height: "+h+"px;overflow-y: scroll;\">";
		ptemplate += "{for item in items}";
		ptemplate += "<div style='clear: both; padding: 10px 0px;'>";
		ptemplate += "<a href='${item.url}'> {if item.image}<img src='${item.image.src}' style='float: left; margin-right: 10px; height: ${item.image.height}px; width: ${item.image.width}px;'/>{/if}<u>${item.title}</u></a>";
		ptemplate += "<small>{if item.author}<br />by ${item.author}{/if}{if item.price} <br />for ${item.price.amount} (${item.price.currency}){/if}</small>";
		ptemplate += "</div>";
		ptemplate += "{/for}";
		ptemplate += "</div>";

		previewBlock.innerHTML = CmdUtils.renderTemplate(ptemplate, previewData);
	  }
	});
   },
   execute: function(directObject, mods) {
   	
      var country = mods.from.text || 'UK';
      var locale = ALM[country.toUpperCase()] || 'co.uk';
    
      var url = "http://www.amazon."+locale+"/s/ref=nb_ss_gw?url=search-alias%3Daps&field-keywords={QUERY}&x=0&y=0";
      var query = directObject.text.replace(" ", "+");
      var urlString = url.replace("{QUERY}", query);
      Utils.openUrlInBrowser(urlString);
   }
  
});