<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2006 Heiner Lamprecht <typo3@heiner-lamprecht.net>
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/
/**
 * Plugin 'DAM Show Image' for the 'hl_dam_gallery' extension.
 *
 * @author	Heiner Lamprecht <typo3@heiner-lamprecht.net>
 */

require_once(PATH_tslib.'class.tslib_pibase.php');

class tx_hldamgallery_pi1 extends tslib_pibase {
    var $prefixId = 'tx_hldamgallery_pi1';                      // Same as class name
    var $scriptRelPath = 'pi1/class.tx_hldamgallery_pi1.php';   // Path to this script relative to the extension dir.
    var $extKey = 'hl_dam_gallery';                             // The extension key.
    var $pi_checkCHash = TRUE;
    var $markContentArray = array();

    /**
     * The main method of the PlugIn
     *
     * @param   string      $content: The PlugIn content
     * @param   array       $conf: The PlugIn configuration
     * @return  The content that is displayed on the website
     */
    function main($content, $conf) {
//         $this->pi_USER_INT_obj = 0;
        $this->conf=$conf;
        $this->pi_setPiVarDefaults();
        $this->pi_loadLL();

        $this->markContentArray["###INIT_GOOGLE_MAPS###"] = '';
        $this->markContentArray["###IPTC_LOC###"] = '';
        $this->markContentArray["###IPTC_CITY###"] = '';
        $this->markContentArray["###IPTC_STATE###"] = '';
        $this->markContentArray["###IPTC_COUNTRY###"] = '';
        $this->markContentArray["###DAM_META_TITLE###"] = '';
        $this->markContentArray["###DAM_META_LOC_DESCR###"] = '';
        $this->markContentArray["###DAM_META_COUNTRY###"] = '';
        $this->markContentArray["###DAM_META_CITY###"] = '';
        $this->markContentArray["###DAM_META_CAPTION###"] = '';
        $this->markContentArray["###DAM_META_KEYWORDS###"] = '';
        $this->markContentArray["###DAM_META_CREATOR###"] = '';
        $this->markContentArray["###DAM_META_PUBLISHER###"] = '';
        $this->markContentArray["###DAM_META_COPYRIGHT###"] = '';

        $galleryPID = intval($this->piVars['galleryPID']);
        $galleryCID = intval($this->piVars['galleryCID']);
        $imageOrderID = intval($this->piVars['imgID']);

        $hideMeta = 0;
        $hideNav = 0;

        if($galleryPID > 0 && $galleryCID > 0) {
            $GLOBALS['TYPO3_DB']->sql_pconnect(TYPO3_db_host, TYPO3_db_username, TYPO3_db_password);
            $GLOBALS['TYPO3_DB']->sql_select_db(TYPO3_db);

            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('tx_hldamgallery_hidemeta, tx_hldamgallery_hidenav',
                'tt_content', 'uid=' . $galleryCID . ' and pid = ' . $galleryPID, '', '', '');

            if($res) {
                $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $hideMeta = $row['tx_hldamgallery_hidemeta'];
                $hideNav = $row['tx_hldamgallery_hidenav'];
            }

            $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('tx_dam_mm_ref.sorting_foreign, tx_dam.file_name, tx_dam.file_path, tx_dam.tx_hldamgallery_viewcount',
                'tx_dam_mm_ref, tx_dam',
                'tx_dam.uid=tx_dam_mm_ref.uid_local and tx_dam_mm_ref.uid_foreign=' . $galleryCID .
                ' and tx_dam_mm_ref.sorting_foreign = ' . $imageOrderID, '', '', '');

            $viewCount = 1;

            if($res) {
                $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                $this->file = $row['file_path'] . $row['file_name'];
                $viewCount = $row['tx_hldamgallery_viewcount'] + 1;

                $updateArray = array(
                    'tx_hldamgallery_viewcount' => $viewCount
                );
                $GLOBALS['TYPO3_DB']->exec_UPDATEquery('tx_dam', 'file_name="' . $row['file_name'] .
                        '" and file_path="' . $row['file_path'] . '"', $updateArray);
            }

            // ========================================================================================================
            //
            // Creating meta data
            //
            $metaContent = '';

            if($GLOBALS['TSFE']->tmpl->setup['plugin.']['tx_hldamgallery.']['useIPTC']) {
                //
                // Using IPTC data, currently the fields are hardcoded.
                //
                $iptcArray = $this->getIPTC_Array($this->file);
                $metaContent = htmlspecialchars($this->getIPTC_Meta($iptcArray));
                $this->getIPTC_Template($iptcArray);
                $conf['altText'] = $metaContent;
                $conf['titleText'] = $metaContent;

                $this->appendMetaTags($metaContent);

                # ===========================================================
                #
                include('exif.php');

                $verbose = 0;

                $map = '';
                $result = read_exif_data_raw($this->file, $verbose);
                if(is_array($result) && in_array('GPS', $result) && is_array($result['GPS']))
                {
                    $lat = $result['GPS']['Latitude'];
                    if(trim($result['GPS']['Latitude Reference']) == 'S') {
                        $lat = -1 * $lat;
                    }
                    $lon = $result['GPS']['Longitude'];
                    if(trim($result['GPS']['Longitude Reference']) == 'W') {
                        $lon = -1 * $lon;
                    }

                    $this->markContentArray["###INIT_GOOGLE_MAPS###"] = '<script type="text/javascript">
/*<![CDATA[*/
<!--
centerOnLoad(' . $lat . ',' . $lon . ');
// -->
/*]]>*/
</script>';

                }
                #
                # ===========================================================
            } else {
                //
                // Reading meta data from DAM-table
                //

                //
                //
                $fileName = basename($this->file);
                $filePath = dirname($this->file) . '/';
                $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 'tx_dam',
                        "file_name='" . $fileName . "' and file_path='" . $filePath . "'", '', '', 1);

                $title = '';
                $caption = '';
                $imgUID = -1;

                $imgAltText = '';
                $imgTitleText = '';
                $keywords = '';

                if($res && intval($hideMeta) != 1) {
                    $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
                    $imgUID = intval($row['uid']);
                    $this->prepareMetaEntry('showTitle', $row['title'], '###DAM_META_TITLE###');
                    $imgTitleText = $row['title'];

                    $this->prepareMetaEntry('showDescription', $row['description'], '###DAM_META_DESCR###');
                    $this->prepareMetaEntry('showCountry', $row['loc_country'], '###DAM_META_COUNTRY###');
                    $this->prepareMetaEntry('showCity', $row['loc_city'], '###DAM_META_CITY###');
                    $this->prepareMetaEntry('showLocDesc', $row['loc_desc'], '###DAM_META_LOC_DESCR###');
                    $this->prepareMetaEntry('showCaption', $row['caption'], '###DAM_META_CAPTION###');
                    $this->prepareMetaEntry('showKeywords', $row['keywords'], '###DAM_META_KEYWORDS###');
                    $this->appendMetaTags($row['keywords']);
                    $this->prepareMetaEntry('showCreator', $row['creator'], '###DAM_META_CREATOR###');
                    $this->prepareMetaEntry('showPublisher', $row['publisher'], '###DAM_META_PUBLISHER###');
                    $this->prepareMetaEntry('showCopyright', $row['copyright'], '###DAM_META_COPYRIGHT###');

                    $imgAltText = $row['alt_text'];
                    $category = $row['category'];
               }

                $conf['altText'] = $imgAltText;
                $conf['titleText'] = $imgTitleText;
            }

            $this->markContentArray["###SHOW_HITS###"] = ($this->conf['showHits']) ? $viewCount : '';

            // ========================================================================================================
            //
            // Prepare img-Tag and back-link
            //
            $a1 = '<a href="'. htmlspecialchars($this->pi_getPageLink($galleryPID, '','')) . '" >';
            $a2 = '</a>';
            $backLink = $a1 . 'back' . $a2;

            $conf['file.'] = $this->cObj->image_compression[$this->cObj->data['image_compression']];

            list($width, $height, $type, $attr) = getImageSize($this->file);
            $conf['file.']['width'] = $width;
            $conf['file.']['height'] = $height;

            $imgName = $this->file;
            $imgOrigFile = $this->file;
            $imgHeight = $height;
            $imgWidth = $width;

            if($this->conf['shrinkImagesToWidth'] && $this->conf['shrinkImagesToWidth'] < $imgWidth) {
                $orientation = ($width >= $height) ? 'landscape' : 'portrait';
                $conf['file.']['maxW'] = $this->conf['shrinkImagesToWidth'];
                if($orientation == 'landscape') {
                    $conf['file.']['width'] = $this->conf['shrinkImagesToWidth'];
                    $conf['file.']['height'] = $this->conf['shrinkImagesToWidth'] / $width * $height;
                } else {
                    $conf['file.']['height'] = $this->conf['shrinkImagesToWidth'];
                }
                $info = $this->cObj->getImgResource($this->file, $conf['file.']);
                $imgName = t3lib_div::png_to_gif_by_imagemagick($info[3]);
                $imgHeight = $info[1];
                $imgWidth = $info[0];
            }

            $altParam = $this->cObj->getAltParam($conf);
            $bigImageTag = '<img src="'.htmlspecialchars($GLOBALS['TSFE']->absRefPrefix.t3lib_div::rawUrlEncodeFP($imgName)) .
                    '" width="' . $imgWidth . '" height="' . $imgHeight . '"' .
                    $this->cObj->getBorderAttr(' border="' . intval($conf['border']).'"') . ($altParam) . ' />';

            $this->markContentArray["###DOWNLOAD_LINK###"] = '';
            if($this->conf['addDownloadLink']) {
                $this->markContentArray["###DOWNLOAD_LINK###"] = '<a href="' . $imgOrigFile . '"' .
                        $target.$GLOBALS['TSFE']->ATagParams . '>download original image</a>';
            }

            // ========================================================================================================
            //
            // Checking for other images in the same gallery
            //
            if(intval($hideNav) != 1) {
                $backLink = $a1 . 'back to gallery' . $a2;

                if($this->conf['numberOfThumbs']) {
                    $numberOfThumbs = intval($this->conf['numberOfThumbs']);
                } else {
                    $numberOfThumbs = 2;
                }

                $linkToNextImage = '';

                $navArray = array();

                if($imgUID >= 0 && $numberOfThumbs > 0) {
                    $refreshTimeout = -1;

                    if($this->conf['slideShowTimeOut']) {
                        $refreshTimeout = intval($this->conf['slideShowTimeOut']);
                    }

                    $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
                        'tx_dam_mm_ref.sorting_foreign, tx_dam.title, tx_dam.description, tx_dam.alt_text, tx_dam.keywords, tx_dam.file_name, tx_dam.file_path',
                        'tx_dam_mm_ref, tx_dam',
                        'tx_dam.uid=tx_dam_mm_ref.uid_local and tx_dam_mm_ref.uid_foreign=' . $galleryCID .
                        ' and abs(tx_dam_mm_ref.sorting_foreign - ' . $imageOrderID . ')<=' . $numberOfThumbs, '',
                        'tx_dam_mm_ref.sorting_foreign', $numberOfThumbs * 2 + 1);

                    while($row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res)) {
                        $imageFile = $row['file_path'] . $row['file_name'];

                        $img = array();
                        if($this->conf['useIPTC']) {
                            $iptcArray = $this->getIPTC_Array($imageFile);
                            $metaContent = htmlspecialchars($this->getIPTC_Meta($iptcArray));
                            $img['altText'] = $metaContent;
                            $img['titleText'] = $metaContent;
                        } else {
                            $img['altText'] = strlen($row['alt_text']) > 0 ? $row['alt_text'] : $row['description'];
                            $img['titleText'] = strlen($row['title']) > 0 ? $row['title'] : $row['description'];
                        }

                        $this->appendMetaTags($row['keywords']);

                        $imgID = $row['sorting_foreign'];
                        $imgTag = $this->createImageTag($imageFile, $img);
                        $url = $this->createNavigationURL($galleryPID, $galleryCID, $imgID);
                        $imgLink = $this->createNavigationLink($url, $imgTag);

                        if($row['sorting_foreign'] == ($imageOrderID + 1)) {
                            // Make the big image a link to the next
                            $bigImageTag = $this->createNavigationLink($url, $bigImageTag);
                            if($refreshTimeout > 0) {
                                $GLOBALS['TSFE']->additionalHeaderData['tx_hldamgallery_refresh'] =
                                    '<meta http-equiv="refresh" content="' . $refreshTimeout . '; URL=' . $url . '" />';
                            }
                        } else if($row['sorting_foreign'] == $imageOrderID) {
                            $imgLink = '<span class="tx_hldamgallery_current_thumb">' . $imgTag . '</span>';
                        }

                        $navArray[$row['sorting_foreign'] - $imageOrderID + $numberOfThumbs] = $imgLink;
                    }

                    $navContent = '';
                    for($i = 0; $i < ($numberOfThumbs * 2 + 1); $i++) {
                        $navContent .= $navArray[$i];
                    }

                    $this->markContentArray["###GALLERY_NAVIGATION###"] = $navContent;
                }
            }
            // ========================================================================================================
            //
            // Creating final output
            //
            $this->markContentArray["###GALLERY_LINK###"] = $backLink;
            $this->markContentArray["###GALLERY_IMAGE###"] = $bigImageTag;

            if(isset($this->conf["singleViewTemplate"])) {
                $template = $this->cObj->cObjGetSingle($this->conf["singleViewTemplate"], $this->conf["singleViewTemplate."]);
            } else {
                // No template given.  We load the default file
                $template = $this->cObj->fileResource('EXT:hl_dam_gallery/res/default.tmpl');
            }

            $content = $this->cObj->substituteMarkerArray($template, $this->markContentArray);
        }
        return $this->pi_wrapInBaseClass($content);
    }

    function createNavigationURL($galleryPID, $galleryCID, $imgID) {
        $typolink_conf = array(
            'no_cache' => $this->conf['showHits'],
            'parameter' => $GLOBALS['TSFE']->id,
            'additionalParams' => '&tx_hldamgallery_pi1[galleryPID]=' . $galleryPID .
                '&tx_hldamgallery_pi1[galleryCID]=' . $galleryCID . '&tx_hldamgallery_pi1[imgID]=' . $imgID,
            'useCacheHash' => true
        );

        return $this->cObj->typolink_URL($typolink_conf);
    }

    //
    // size:  0 := small, 1:= medium, 2:= large
    function createNavigationURLSize($galleryPID, $galleryCID, $imgID, $size) {
        $typolink_conf = array(
            'no_cache' => $this->conf['showHits'],
            'parameter' => $GLOBALS['TSFE']->id,
            'additionalParams' => '&tx_hldamgallery_pi1[galleryPID]=' . $galleryPID .
                '&tx_hldamgallery_pi1[galleryCID]=' . $galleryCID . '&tx_hldamgallery_pi1[imgID]=' . $imgID .
                '&tx_hldamgallery_pi1[size]=' . $size,
            'useCacheHash' => true
        );

        return $this->cObj->typolink_URL($typolink_conf);
    }

    function createNavigationLink($url, $string) {
        $a1 = '<a href="' . $url . '"' . $target.$GLOBALS['TSFE']->ATagParams . '>';
        $a2 = '</a>';
        $content = $a1 . $string . $a2;
        return $content;
    }

    function createImageTag($imageFile, $img) {
        $conf = $this->cObj->image_compression[$this->cObj->data['image_compression']];
        $conf['altText'] = $img['altText'];
        $conf['titleText'] = $img['titleText'];
        $conf['is_HL_Dam_Gallery_Image'] = true;
        $imgTag = $this->cObj->cImage($imageFile, $conf);
        return $imgTag;
    }

    function prepareMetaEntry($confID, $value, $marker) {
        $content = '';
        if($this->conf['defaultIfEmpty']) {
            $content = $this->conf['defaultIfEmpty'];
        }

        $defaultConfID = str_replace('show', 'default', $confID);
        switch($this->conf[$confID]) {
            case 1:
                if(strlen($value) > 0) {
                    $content = $value;
                } else {
                    $content = '';
                }
                break;
            case 2:
                if(strlen($value) > 0) {
                    $content = $value;
                }
                break;
            case 3:
                if(strlen($value) > 0) {
                    $content = $value;
                } else if($this->conf[$defaultConfID]) {
                    $content = $this->conf[$defaultConfID];
                }
                break;
            case 4:
                if($this->conf[$defaultConfID]) {
                    $content = $this->conf[$defaultConfID];
                }
                break;
            default:
                $content = '';
                break;
        }

        $this->markContentArray[$marker] = $content;
    }

    function getIPTC_Array($file) {
        $iptcArray = false;
        $size = getImageSize($file, $info);

        if(is_array($info)) {
            $iptcArray = array();
            $iptc = iptcparse($info["APP13"]);

            $iptcArray['location'] = (strlen($iptc["2#092"][0]) > 0) ? $iptc["2#092"][0] : '';
            $iptcArray['city'] = (strlen($iptc["2#090"][0]) > 0) ? $iptc["2#090"][0] : '';
            $iptcArray['state'] = (strlen($iptc["2#095"][0]) > 0) ? $iptc["2#095"][0] : '';
            $iptcArray['country'] = (strlen($iptc["2#101"][0]) > 0) ? $iptc["2#101"][0] : '';
        }

        return $iptcArray;
    }

    function getIPTC_Template($iptcArray) {
        if(is_array($iptcArray)) {
            $this->markContentArray["###IPTC_LOC###"] = $iptcArray['location'];
            $this->markContentArray["###IPTC_CITY###"] = $iptcArray['city'];
            $this->markContentArray["###IPTC_STATE###"] = $iptcArray['state'];
            $this->markContentArray["###IPTC_COUNTRY###"] = $iptcArray['country'];
        }
    }

    function getIPTC_Meta($iptcArray) {
        $metaConn = '';

        if(is_array($iptcArray)) {
            if(strlen($iptcArray['location']) > 0) {
                $metaContent = $iptcArray['location'];
                $metaConn = ', ';
            }

            if(strlen($iptcArray['city']) > 0) {
                $metaContent .= $metaConn . $iptcArray['city'];
                $metaConn = ', ';
            }

            if(strlen($iptcArray['state']) > 0) {
                $metaContent .= $metaConn . $iptcArray['state'];
                $metaConn = ', ';
            }

            if(strlen($iptcArray['country']) > 0) {
                $metaContent .= $metaConn . $iptcArray['country'];
                $metaConn = ', ';
            }
        }

        return $metaContent;
    }


    function appendMetaTags($keywordsText) {
        // <meta name="keywords" content=" ... " />
        $pageKeyString = $GLOBALS['TSFE']->additionalHeaderData['tx_hldamgallery_meta'];

        if(strlen($pageKeyString)) {
            $pageKeyString = str_replace('<meta name="keywords" content="', '', $pageKeyString);
            $pageKeyString = str_replace('" />', '', $pageKeyString);
            $pageKeys = explode(',', $pageKeyString);
        } else {
            $pageKeys = array();
        }

        $keywords = explode(',', $keywordsText);
        foreach($keywords as $key) {
            if(!in_array($key, $pageKeys) && strlen(trim($key))) {
                if(strlen(trim($pageKeyString)) == 0) {
                    $pageKeyString = trim($key);
                } else {
                    $pageKeyString .= ',' . trim($key);
                }
            }
        }

        $pageKeyString = trim($pageKeyString);
        if(strlen($pageKeyString)) {
            $GLOBALS['TSFE']->additionalHeaderData['tx_hldamgallery_meta'] =
                    '<meta name="keywords" content="' . trim($pageKeyString) . '" />';
        }
    }

}

if (defined('TYPO3_MODE') && $TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/hl_dam_gallery/pi1/class.tx_hldamgallery_pi1.php'])	{
    include_once($TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']['ext/hl_dam_gallery/pi1/class.tx_hldamgallery_pi1.php']);
}
/*
function linkPage($pid) {
        $typolink_conf = array(
            "no_cache" => false, // cache this page
            "returnLast" => "url", // don't wrap the link in anchor tags
            "parameter" => $pid, // page id
            "additionalParams" = "&xx_myext[aaa]=bbb", // extra params
            "useCacheHash" => true); // generate cHash
        return $this->cObj->typolink("", $typolink_conf);
}

tslib_pibase:  http://typo3api.ueckermann.de/index.html :

Example create link function in class.tslib_pibase.php :
tslib_pibase::pi_linkTP ( $str,
  $urlParameters = array(),
  $cache = 0,
  $altPageId = 0
)
*/
?>