PraizedActionFacade.js

/// THIS IS BROKEN, NEW VERSION TO COME... watch for it in my repos.

/* PraizedActionFacade.js 0.1 - "Facade Pattern" to simplify Praizd API actions for tempalte building
 *
 * Author: Francois Lafortune
 * Copyright (c) 2010 PraizedMedia Inc. 
 *
 * REQUIRES jsonPath() http://goessner.net/articles/JsonPath/
 * I felt I should stress this: jsonPath does most of what's magic here and save a lot of lines of code
 * in doing so...
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
var PraizedActionFacade = new function PraizedActionFacade(){
	var facades = this;
	// __noSuchMethod__ (like method_missing) works only in firefox,
	// used here to determine via firebug what has yet to be implemented...
	facades.__noSuchMethod__ = function(fn){ 
		console.debug('must implement:',fn);
	}
	/*
		No pre-existing standard has been applied here, but 
		what I came up with goes along the lines of...
		{
			pid: a pid (string),
			name: something's name (string),
			value: something's value if it had a name (string||object),
			title: if no name then title and text is used (string),
			text: something's text (string),
			permalink: thing's permalink (string),
			subject: the targeted thing (facades::object),
			owner: the thing's user (facades::object),
			attachments: facades objects colletion (array),
			iconURL: the stream icon url (string)
			// App specific
			appURL: specific to quickredfox's development needs only (string),
			params: additional params,
		}

	*/
	facades.merchant = function(merchant){
		return {
			pid: merchant.pid,
			name: merchant.name,
			type: 'merchant',
			value: (merchant.location ? [merchant.location.street_address,merchant.location.city.name,merchant.location.country.code].join(', ') : 'no address'),
			permalink: merchant.permalink,
			appURL: 'app://merchants/'+merchant.pid+'.json'
		};
	}
	facades.comment = function(comment){
		var targetType = comment.merchant ? 'merchant' : 'comment';
		var target = facades[targetType](comment[targetType]);
		return {
			pid: comment.pid,
			type: 'comment',
			text: comment.comment,
			title: comment.user.display_name+" comments",
			subject: target,
			permalink: target.permalink,
			owner: facades.user(comment.user),
			appURL: 'app://'+target.type+'s/'+target.pid+'/comments/'+target.pid+'.json'
		}
	}
	facades.user = function(user){
		return {
			permalink: user.permalink,
			name: user.display_name,
			type: 'user',
			appURL: 'app://users/'+user.login+'.json'
		}
	}
	facades.question = function(question){
		return {
			pid: question.pid,
			type: 'question',
			text: question.content,
			owner: facades.user(question.user),
			permalink: question.permalink,
			title: question.user.display_name+" asks",
			params: {
				q: question.what,
				l: question.where
			},
			appURL: 'app://questions/'+question.pid+'.json'
		}
	}
	facades.favorite = function(favorite){
		var merchant = facades.merchant(favorite.merchant);
		return {
			type: 'favorite',
			title: favorite.user.display_name+" favors",
			subject: merchant,
			permalink: merchant.permalink,
			owner: facades.user(favorite.user),
			appURL: 'app://merchants/'+merchant.pid+'.json'						
		}
	}
	facades.answer = function(answer){
		var attachments = [];
		if(answer.merchants) 
		for(var i=0,m;m=answer.merchants[i++];) attachments.push(facades.merchant(m))
		return {
			pid: answer.pid,
			type: 'answer',
			title: answer.user.display_name+" answers",
			text: answer.content,
			permalink: answer.permalink,
			subject: facades.question(answer.question),
			owner: facades.user(answer.user),
			appURL: 'app://questions/'+answer.question.pid+'/answers/'+answer.pid+'.json',
			attachments: attachments
		}
	}
	facades.vote = function(vote){
		var target = facades[vote.voteable_type](vote[vote.voteable_type]);
		return {
			value:(vote.vote?'like':'dislike'),
			type: 'vote',
			title: vote.user.display_name+(vote.vote?' likes':' dislikes'),
			subject: target,
			owner: facades.user(vote.user),
			appURL: 'app://'+vote.voteable_type+'/'+target.pid+'.json'
		}
	}
	facades.create = function(action){
		var data = {};
		data.pid = jsonPath(action,'$.pid')[0];
		data.appURL = 'app://actions/'+data.pid+".json";
		data.type = jsonPath(action,'$..action_type.type_name')[0];
		data.type = (data.type == 'praized' ? 'like' : data.type == 'razed' ? 'disliked' : data.type );
		data.iconURL = jsonPath(action,'$..avatar.small')[0];
		var target = jsonPath(action,'$..targets[0]')[0];		
		var targetType =(function(t){for(var k in t) return k;})(target);
		data.content= facades[targetType](target[targetType]);
		if(data.type == 'new_merchant')	data.content.title = '"'+data.content.name+"\" has been added";
		// data.permalink= data.data.subject.permalink
		return data
	}
}