<?php

// create the shortcode
add_shortcode( 'portfolio_slideshow', 'portfolio_slideshow_shortcode' );

// define the shortcode function
function portfolio_slideshow_shortcode( $atts ) {

    STATIC $i=0;

    global $ps_options;

    extract( shortcode_atts( array(
        'size' => $ps_options['size'],
        'nowrap' => '',
        'loop' => $ps_options['loop'],
        'speed' => $ps_options['speed'],
        'trans' => $ps_options['trans'],
        'timeout' => $ps_options['timeout'],
        'exclude_featured'  => $ps_options['exclude_featured'],
        'autoplay' => $ps_options['autoplay'],
        'pagerpos' => $ps_options['pagerpos'],
        'navpos' => $ps_options['navpos'],
        'showcaps' => $ps_options['showcaps'],
        'showtitles' => $ps_options['showtitles'],
        'showdesc' => $ps_options['showdesc'],
        'click' =>  $ps_options['click'],
        'thumbs' => '',
        'fluid' =>  $ps_options['allowfluid'],
        'slideheight' => '',
        'id' => '',
        'exclude' => '',
        'include' => ''
    ), $atts ) );

    //mapping for people using older versions of the plugin
    if ( $thumbs == "true" ) $pagerpos = "bottom";

    /* Preserve the nowrap option if people are still using it */
    if ( $nowrap == "false" || $loop == "true" ) { $loop = "true"; } else { $loop = "false"; }

    //has a custom post id been declared or should we use current page ID?
    if ( ! $id ) { $id = get_the_ID(); }

    //if the exclude_featured attribute is set, get the featured thumb ID and add it to the $exclude string
    if ( $exclude_featured == "true" ) {
        $featured_id = get_post_thumbnail_id( $id );
        if ( ! $include ) { // we don't need an exclude variable if $include is set
            if ( $exclude ) { //if $exclude is set, concatenate it
                $exclude = $exclude . "," . $featured_id;
             } else { //$exclude is simply equal to $featured_id
                $exclude = $featured_id;
             }
        }
    }

    //count the attachments
    if ( $include ) {
        $include = preg_replace( '/[^0-9,]+/', '', $include );
        $attachments = get_children( array('post_parent' => $id, 'post_type' => 'attachment', 'post_mime_type' => 'image', 'include' => $include) );

    } elseif ( $exclude ) {
        $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
        $attachments = get_children( array('post_parent' => $id, 'post_type' => 'attachment', 'post_mime_type' => 'image', 'exclude' => $exclude) );
    } else {
        $attachments = get_children( array ( 'post_parent' => $id, 'post_type' => 'attachment', 'post_mime_type' => 'image' ) );
    }

    global $ps_count;
    $ps_count = count( $attachments );

    // Navigation
    if ( ! is_feed() && $ps_count > 1 ) { //no need for navigation if there's only one slide

    $ps_nav = '<div id="slideshow-nav'.$i.'" class="slideshow-nav">';

    $ps_nav .='<a class="pause" style="display:none" href="javascript:void(0);">Pause</a><a class="play" href="javascript:void(0);">Play</a><a class="restart" style="display:none" href="javascript: void(0);">Play</a><a class="slideshow-prev" href="javascript: void(0);">Prev</a><span class="sep">|</span><a class="slideshow-next" href="javascript: void(0);">Next</a><span class="slideshow-info' . $i . ' slideshow-info"></span>';

    $ps_nav .= '</div><!-- .slideshow-nav-->
    ';
    }

    //Pager

    //Do we show thumbnails?
    if ( ! is_feed() &&  $ps_count > 1 ) {
        $ps_pager = '<div class="pscarousel';

        $ps_pager .='">';

        $ps_pager .= '<div id="pager' . $i . '" class="pager items clearfix">';

        if ( $include ) {
            $include = preg_replace( '/[^0-9,]+/', '', $include );
            $attachments = get_posts( array(
            'order'          => 'ASC',
            'orderby'        => 'menu_order ID',
            'post_type'      => 'attachment',
            'post_parent'    => $id,
            'post_mime_type' => 'image',
            'post_status'    => null,
            'numberposts'    => -1,
            'size'           => 'thumbnail',
            'include'        => $include) );
        } elseif ( $exclude ) {
            $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
            $attachments = get_posts( array(
            'order'          => 'ASC',
            'orderby'        => 'menu_order ID',
            'post_type'      => 'attachment',
            'post_parent'    => $id,
            'post_mime_type' => 'image',
            'post_status'    => null,
            'numberposts'    => -1,
            'size'           => 'thumbnail',
            'exclude'        => $exclude) );
        } else {
            $attachments = get_posts( array(
            'order'          => 'ASC',
            'orderby'        => 'menu_order ID',
            'post_type'      => 'attachment',
            'post_parent'    => $id,
            'post_mime_type' => 'image',
            'post_status'    => null,
            'numberposts'    => -1,
            'size'           => 'thumbnail') );
        }

        if ($attachments) {
            $j = 1;

            foreach ( $attachments as $attachment ) {

            $ps_pager .= wp_get_attachment_image($attachment->ID, 'thumbnail', false, false);;

            $j++;
            }
        }

        $ps_pager .= '</div>';

        $ps_pager .= '</div>';
    }

    if ( ! is_feed() ) {

    $slideshow =
        '<script type="text/javascript">/* <![CDATA[ */ psTimeout['.$i.']='.$timeout.';psAutoplay['.$i.']='.$autoplay.';psTrans['.$i.']=\''.$trans.'\';psLoop['.$i.']='.$loop.';psSpeed['.$i.']='.$speed.';/* ]]> */</script>
        ';

        //wrap the whole thing in a div for styling
        $slideshow .= '<div id="slideshow-wrapper'.$i.'" class="slideshow-wrapper clearfix';

        if ( $fluid == "true" ) {
            $slideshow .= " fluid";
        }

        if ( $ps_options['showloader'] == "true" ) {
            $slideshow .= " showloader";
        }

        $slideshow .= '">';

        if ( $navpos == "top" ) {
            $slideshow .= $ps_nav;
        }

        if ( $pagerpos == "top" ) {
            $slideshow .= $ps_pager;
        }

    } //end ! is_feed()

    $slideshow .= '<div id="portfolio-slideshow'.$i.'" class="portfolio-slideshow"';

    /* An inline style if they need to set a height for the main slideshow container */

    if ( $slideheight ) {
        $slideshow .= ' style="min-height:' . $slideheight . 'px !important;"';
    }

    $slideshow .='>
    ';

    $slideID = 0;

    if ( $include ) {
        $include = preg_replace( '/[^0-9,]+/', '', $include );
        $attachments = get_posts( array( 'order'          => 'ASC',
        'orderby'        => 'menu_order ID',
        'post_type'      => 'attachment',
        'post_parent'    => $id,
        'post_mime_type' => 'image',
        'post_status'    => null,
        'numberposts'    => -1,
        'size'           => $size,
        'include'        => $include) );

    } elseif ( $exclude ) {
        $exclude = preg_replace( '/[^0-9,]+/', '', $exclude );
        $attachments = get_posts( array( 'order'          => 'ASC',
        'orderby'        => 'menu_order ID',
        'post_type'      => 'attachment',
        'post_parent'    => $id,
        'post_mime_type' => 'image',
        'post_status'    => null,
        'numberposts'    => -1,
        'size'           => $size,
        'exclude'        => $exclude) );
    } else {
        $attachments = get_posts( array( 'order'          => 'ASC',
        'orderby'        => 'menu_order ID',
        'post_type'      => 'attachment',
        'post_parent'    => $id,
        'post_mime_type' => 'image',
        'post_status'    => null,
        'numberposts'    => -1,
        'size'           => $size) );
    }

    if ( $attachments ) { //if attachments are found, run the slideshow

        //begin the slideshow loop
        foreach ( $attachments as $attachment ) {

            $alttext = get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true );

            if ( ! $alttext ) {
                $alttext = $attachment->post_title;
            }

            $slideshow .= '<div class="';
            if ( $slideID != "0" ) { $slideshow .= "not-first "; }
            $slideshow .= 'slideshow-next slideshow-content';
            $slideshow .= '">
            ';

            switch ( $click ) {

                case "openurl" :
                    $imagelink = get_post_meta( $attachment->ID, '_ps_image_link', true );
                    if ( $imagelink ) { $imagelink = $imagelink . '" target="' . $ps_options['click_target']; } else { $imagelink = 'javascript: void(0);" class="slideshow-next';}
                    break;

                default :
                    $imagelink = 'javascript: void(0);" class="slideshow-next';
                    break;
            }

if ( $loop == "false" && $ps_count - 1 != $slideID || $loop != "false" ) { $slideshow .= '<a href="'.$imagelink.'">';}

/*
 * This is the part of the loop that actually returns the images
 */

            $ps_placeholder = PORTFOLIO_SLIDESHOW_URL . '/img/tiny.png';

            /* Otherwise it's just one of the WP defaults */

            $img =  wp_get_attachment_image_src( $attachment->ID, $size );

            $slideshow .= '<img class="psp-active" data-img="' . $img[0] . '"';

            if ( $slideID < 1 ) {
                $slideshow .= ' src="' . $img[0] . '"';
            } else {
                $slideshow .= ' src="' . $ps_placeholder . '"';
            }
            //include the src attribute for the first slide only

            $slideshow .= ' height="' . $img[2] . '" width="' . $img[1] . '" alt="' . $alttext . '" /><noscript><img src="' . $img[0] . '" height="' . $img[2] . '" width="' . $img[1] . '" alt="' . $alttext . '" /></noscript>';


/*
 * That's it for the images
 */

            if ( $loop == "false" && $ps_count - 1 != $slideID || $loop !="false" ) {
                        $slideshow .= "</a>";
            }


            if ( $showtitles == "true" || $showcaps == "true" || $showdesc == "true" ) {
                $slideshow .= '<div class="slideshow-meta">';
            }

            //if titles option is selected
            if ( $showtitles == "true" ) {
                $title = $attachment->post_title;
                if ( $title ) {
                    $slideshow .= '<p class="slideshow-title">'.$title.'</p>';
                }
            }

            //if captions option is selected
            if ( $showcaps == "true" ) {
                $caption = $attachment->post_excerpt;
                if ( $caption ) {
                    $slideshow .= '<p class="slideshow-caption">'.$caption.'</p>';
                }
            }

            //if descriptions option is selected
            if ( $showdesc == "true" ) {
                $description = $attachment->post_content;
                if ( $description ) {
                    $slideshow .= '<div class="slideshow-description">'. wpautop( $description ) .'</div>';
                }
            }
            if ( $showtitles == "true" || $showcaps == "true" || $showdesc == "true" ) {
                $slideshow .= '</div>';
            }

            $slideshow .= '</div>
            ';

            $slideID++;

        }  // end slideshow loop
    } // end if ( $attachments)

    $slideshow .= "</div><!--#portfolio-slideshow-->";

    if ( $navpos == "bottom" ) {
        $slideshow .= $ps_nav;
    }

    if ( $pagerpos == "bottom" ) {
        $slideshow .= $ps_pager;
    }

    $slideshow .='</div><!--#slideshow-wrapper-->';

    $i++;

    return $slideshow;  //that's the slideshow


} //ends the portfolio_shortcode function ?>