<?php

class saSimplyPagerComponents extends sfComponents
{
    public function executePager(sfWebRequest $request)
    {
        $this->pager = $this->getVar('pager');

        if($this->pager->haveToPaginate())
        {
            $this->actualUrl = $request->getPathInfoPrefix().$request->getPathInfo().'?'.$this->getActualQueryStringWithPage($this->pager->getPage());
            $this->firstUrl = str_ireplace('page='.$this->pager->getPage(), 'page='.$this->pager->getFirstPage(), $this->actualUrl);
            $this->lastUrl = str_ireplace('page='.$this->pager->getPage(), 'page='.$this->pager->getLastPage(), $this->actualUrl);
            $this->nextUrl = str_ireplace('page='.$this->pager->getPage(), 'page='.$this->pager->getNextPage(), $this->actualUrl);
            $this->previousUrl = str_ireplace('page='.$this->pager->getPage(), 'page='.$this->pager->getPreviousPage(), $this->actualUrl);
        }
    }

    protected function getActualQueryStringWithPage($actual_page)
    {
        $info = $this->getRequest()->getPathInfoArray();
        $query_string = empty($info['QUERY_STRING']) ? '' : $info['QUERY_STRING'];

        if(strpos($query_string, 'page=') === false)
        {
            if(strlen($query_string) > 0)
            {
                $query_string .= '&';
            }
            
            $query_string .= 'page=1';
        }

        if($page = $this->getRequest()->getParameter('page', false))
        {
            $query_string = str_ireplace('page='.$actual_page, 'page='.$page, $query_string);
        }

        return $query_string;
    }

    public function executePagesizeSwitcher(sfWebRequest $request)
    {
        $this->nbResults = $this->getVar('nbResults');

        $this->pagesizeList = array(10, 20, 40, 80);
        $this->actualUrl = $request->getPathInfoPrefix().$request->getPathInfo().'?'.$this->getActualQueryStringWithPagesize();
        $this->actualPagesize = $request->getParameter('pagesize', sfConfig::get('app_default_pagesize'));
    }

    protected function getActualQueryStringWithPagesize()
    {
        $info = $this->getRequest()->getPathInfoArray();
        $query_string = empty($info['QUERY_STRING']) ? '' : $info['QUERY_STRING'];

        if(strpos($query_string, 'pagesize=') === false)
        {
            if(strlen($query_string) > 0)
            {
                $query_string .= '&';
            }    

            $query_string .='pagesize='.sfConfig::get('app_default_pagesize');
        }

        if($pagesize = $this->getRequest()->getParameter('pagesize', false))
        {
            $query_string = str_ireplace('pagesize='.sfConfig::get('app_default_pagesize'), 'pagesize='.$pagesize, $query_string);
        }

        return $query_string;
    }
}