define([
    "jquery",
    "core",
    "async-runner"
], function($, core, asyncRunner) {
	
	var PROVIDER_DOWNLOAD = "download";
	
	var downloadProvider = {
		providerId: PROVIDER_DOWNLOAD,
		sharingAttributes: ["url"]
	};
	
	downloadProvider.importPublic = function(importParameters, callback) {
		var task = asyncRunner.createTask();
		var title = undefined; 
		var content = undefined;
		task.onRun(function() {
			var url = importParameters.url;
			var slashUrl = url.lastIndexOf("/");
			if(slashUrl === -1) {
				task.error(new Error("Invalid URL parameter."));
				return;
			}
			title = url.substring(slashUrl + 1);
			$.ajax({
				url : DOWNLOAD_PROXY_URL + "download?url=" + url,
				type: "GET",
				dataType : "text",
				timeout : AJAX_TIMEOUT
			}).done(function(result, textStatus, jqXHR) {
				content = result;
				task.chain();
			}).fail(function(jqXHR) {
				task.error(new Error("Unable to access URL " + url));
			});
		});
		task.onSuccess(function() {
			callback(undefined, title, content);
		});
		task.onError(function(error) {
			callback(error);
		});
		asyncRunner.addTask(task);
	};

	return downloadProvider;
});