<?php

class BlogHolder extends Page {
	
		static $icon = "blog/images/blogholder";
	
	static $db = array(
	);
	
	static $has_one = array(
		"SideBar" => "WidgetArea"
	);
	
	static $allowed_children = array(
		'BlogEntry'
	);
	
	function getCMSFields() {
		$fields = parent::getCMSFields();
		$fields->removeFieldFromTab("Root.Content.Main","Content");
		$fields->addFieldToTab("Root.Content.Widgets", new WidgetAreaEditor("SideBar"));
		
		return $fields;
	}
	
	public function BlogEntries($limit = 10) {
		$start = isset($_GET['start']) ? (int)$_GET['start'] : 0;
		$tagCheck = '';
		$dateCheck = "";
		
		if(isset($_GET['tag'])) {
			$tag = addslashes($_GET['tag']);
			$tag = str_replace(array("\\",'_','%',"'"), array("\\\\","\\_","\\%","\\'"), $tag);
			$tagCheck = "AND `BlogEntry`.Tags LIKE '%$tag%'";
		}
		
		
		if(Director::urlParams()){

			$year = Director::urlParam('Action');
			$month = Director::urlParam('ID');
			
			if(is_numeric($month) && is_numeric($month)){
				$dateCheck = "AND Date BETWEEN '$year-$month-1' AND '$year-$month-31'";
			}
			else if(isset($year)){
					$dateCheck = "AND Date BETWEEN '$year-1-1' AND '$year-12-31'";			
			}
		}
		
		return DataObject::get("Page","`ParentID` = $this->ID AND ShowInMenus = 1 $tagCheck $dateCheck","`BlogEntry`.Date DESC",'',"$start, $limit");
	}

	function Tag() {
		return isset($_GET['tag']) ? $_GET['tag'] : false;
	}
	
	function BlogEntryForm(){
		Requirements::javascript('jsparty/behaviour.js');
		Requirements::javascript('jsparty/prototype.js');
		Requirements::javascript('jsparty/scriptaculous/effects.js');
		Requirements::javascript('cms/javascript/PageCommentInterface.js');
		Requirements::javascript('blog/javascript/bbcodehelp.js');
				
		$id = 0;
		if(Director::urlParam('ID')){
			$id = Director::urlParam('ID');
		}
				
		$codeparser = new BBCodeParser();
		$membername = Member::currentMember() ? Member::currentMember()->getName() : "";
		
		$fields = new FieldSet(
			new HiddenField("ParentID", "ParentID", $this->ID),
			new HiddenField("ID","ID"),
			new HiddenField("Date","Date"),
			new TextField("Title","Subject"),
			new TextField("Author","Author",$membername),
			new CompositeField( 
				new LiteralField("BBCodeHelper","<a  id=\"BBCodeHint\" target='new'>BBCode help</a><div class='clear'><!-- --></div>" ),
				new TextareaField("Content", "Content",20),
				new LiteralField("BBCodeTags","<div id='BBTagsHolder' style='display:none;'>".$codeparser->useable_tagsHTML()."</div>")	
			),
			new TextField("Tags","Tags"),
			new LiteralField("Tagsnote"," <label id='tagsnote'>For example: sport, personal, science fiction<br/>" .
												"Please separate tags using commas.</label>")
		);	
		
		$submitAction = new FormAction('postblog', 'Post blog entry');
		$actions = new FieldSet($submitAction);
		$validator = new RequiredFields('Title','Content');
			
		$form = new BlogEntry_Form($this, 'BlogEntryForm',$fields, $actions,$validator);
	
		if($id != 0){
			$form->loadNonBlankDataFrom(DataObject::get_by_id('BlogEntry',$id));
		}else{
				$form->loadNonBlankDataFrom(array("Author" => Cookie::get("BlogHolder_Name")));
		}
		
		return $form;
	}

	function isPost(){
		return Director::urlParam('Action') == 'post';
	}
	
	function postURL(){
		return  $this->Link('post');
	}

	function requireDefaultRecords() {
		parent::requireDefaultRecords();
		
		if(!DataObject::get_one('BlogHolder')) {
			$blogholder = new BlogHolder();
			$blogholder->Title = "Blog";
			$blogholder->URLSegment = "blog";
			$blogholder->Status = "Published";
			
			$widgetarea = new WidgetArea();
			$widgetarea->write();
			
			$blogholder->SideBarID = $widgetarea->ID;
			$blogholder->write();
			$blogholder->publish("Stage", "Live");
			
			$managementwidget = new BlogManagementWidget();
			$managementwidget->ParentID = $widgetarea->ID;
			$managementwidget->write();
			
			$tagcloudwidget = new TagCloudWidget();
			$tagcloudwidget->ParentID = $widgetarea->ID;
			$tagcloudwidget->write();
			
			$archivewidget = new ArchiveWidget();
			$archivewidget->ParentID = $widgetarea->ID;
			$archivewidget->write();
			
			$widgetarea->write();
			
			$blog = new BlogEntry();
			$blog->Title = "SilverStripe blog module successfully installed";
			$blog->URLSegment = 'sample-blog-entry';
			$blog->setDate(date("Y-m-d H:i:s",time()));
			$blog->Tags = "silverstripe, blog";
			$blog->Content = "Congratulations, the SilverStripe blog module has been successfully installed. This blog entry can be safely deleted. You can configure aspects of your blog (such as the widgets displayed in the sidebar) in [url=admin]the CMS[/url].";
			$blog->Status = "Published";
			$blog->ParentID = $blogholder->ID;
			$blog->write();
			$blog->publish("Stage", "Live");
			
			Database::alteration_message("Blog page created","created");
		}
	}
}

class BlogHolder_Controller extends Page_Controller {
	function init() {
		parent::init();
		
		// This will create a <link> tag point to the RSS feed
		RSSFeed::linkToFeed($this->Link() . "rss", "RSS feed of this blog");
		Requirements::themedCSS("blog");
		Requirements::themedCSS("bbcodehelp");

	}

	function showarchive() {
		$month = addslashes($this->urlParams['ID']);
		return array(
			"Children" => DataObject::get('SiteTree', "ParentID = $this->ID AND DATE_FORMAT(`BlogEntry`.`Date`, '%Y-%M') = '$month'"),
		);		
	}

	function ArchiveMonths() {
		$months = DB::query("SELECT DISTINCT DATE_FORMAT(`BlogEntry`.`Date`, '%M') AS `Month`, DATE_FORMAT(`BlogEntry`.`Date`, '%Y') AS `Year` FROM `BlogEntry` ORDER BY `BlogEntry`.`Date` DESC");
		$output = new DataObjectSet();
		foreach($months as $month) {
			$month['Link'] = $this->Link() . "showarchive/$month[Year]-$month[Month]";
			$output->push(new ArrayData($month));
		}
		return $output;
	}
	
	function rss() {
		global $project;
		$rss = new RSSFeed($this->Children(), $this->Link(), $project . " blog", "", "Title", "ParsedContent");
		$rss->outputToBrowser();
	}
	
	function BBTags() {
		return BBCodeParser::usable_tags();
	}
	
	function post(){
		if(!Permission::check('ADMIN')){
			Security::permissionFailure($this,
				"Posting blogs is an administrator task. Please log in.");
		}
		return array();
	}
	
	function defaultAction($action) {
		// Protection against infinite loops when an RSS widget pointing to this page is added to this page
		if(stristr($_SERVER['HTTP_USER_AGENT'], 'SimplePie')) {
			return $this->rss();
		}
		
		return parent::defaultAction($action);
	}
	
}


class BlogEntry_Form extends Form {
	function postblog($data) {
		Cookie::set("BlogHolder_Name", $data['Author']);
		$blogentry = new BlogEntry();
		$this->saveInto($blogentry);
				
		if($data['ID'] != 0){ //new post
			$blogentry = DataObject::get_by_id("BlogEntry",$data['ID']);
			$this->saveInto($blogentry);
			$blogentry->setDate($data['Date']);
		}else{
			$blogentry->setDate(date("Y-m-d H:i:s",time()));
			$blogentry->URLSegment = $data['Title'];		
		}
		
		$blogentry->Status = "Published";
		$blogentry->writeToStage("Stage");
		$blogentry->publish("Stage", "Live");

		Director::redirect(Director::currentURLSegment());
		
	}
}

?>