<?php
if ( ! defined( 'ABSPATH' ) ) exit; 
function uaf_count_uploaded_fonts(){
	$count = 0;
	$fontsRawData   = get_option('uaf_font_data');
	if ((!empty($fontsRawData)) && ($fontsRawData != 'null')){
		$fontsData 		= json_decode($fontsRawData, true);	
		$count 			= count($fontsData);
	}
	return $count;
}

function uaf_get_uploaded_font_data(){
	$fontsRawData   = get_option('uaf_font_data');
	return json_decode($fontsRawData, true);
}

function uaf_get_font_families(){
	$fontsData		= uaf_group_fontdata_by_fontname(uaf_get_uploaded_font_data());
	$fonts_uaf		= array();
	if (!empty($fontsData)):
		foreach ($fontsData as $fontName=>$fontData):
			$fonts_uaf[] = $fontName;
		endforeach;
	endif;
	return $fonts_uaf;
}

function uaf_save_font_files($font_name, $font_weight, $font_style, $convertResponse, $predefined_font_id = ''){
	uaf_create_folder(); // CREATE FOLDER IF DOESN"T EXISTS
	$uafPath 				= uaf_path_details();
	$fontNameToStore 		= sanitize_file_name(rand(0,9999).$font_name);
	
	$convertResponseArray = json_decode(stripslashes($convertResponse), true);
	if ($convertResponseArray['global']['status'] == 'ok'):
		$neededFontFormats = array('woff2','woff');
		foreach ($neededFontFormats as $neededFontFormat):
			if ($convertResponseArray[$neededFontFormat]['status'] == 'ok'):
				$fontFileContent = wp_safe_remote_get($convertResponseArray[$neededFontFormat]['filename'], array('timeout'=>'300'));

				if ( is_wp_error( $fontFileContent ) ) {
			        $fontUploadFinalResponse['status']   = 'error';
					$fontUploadFinalResponse['body']	 = $fontFileContent->get_error_message();
					return $fontUploadFinalResponse;
			    }	

			    if ( $fontFileContent['response']['code'] == '200') :			     	
			    	$fontFileContent = wp_remote_retrieve_body( $fontFileContent );
			    	if (!empty($fontFileContent)):
						$newFileName		= $fontNameToStore.'.'.$neededFontFormat;
						$newFilePath		= $uafPath['dir'].$newFileName;
						$fh = fopen($newFilePath, 'w') or die("can't open file. Make sure you have write permission to your upload folder");
						fwrite($fh, $fontFileContent);
						fclose($fh);
					else:
						$fontSaveMsg[$neededFontFormat]['status'] 	= 'error';
						$fontSaveMsg[$neededFontFormat]['body']		= "Couldn't receive $neededFontFormat file";
					endif;
			    else:
			    	$fontSaveMsg[$neededFontFormat]['status'] 	= 'error';
					$fontSaveMsg[$neededFontFormat]['body']		= $neededFontFormat.' : '.$fontFileContent['response']['code'].' '.$fontFileContent['response']['message'];		   
			    endif;
			else:
					$fontSaveMsg[$neededFontFormat]['status'] 	= 'error';
					$fontSaveMsg[$neededFontFormat]['body']		= $convertResponseArray[$neededFontFormat]['msg'];
			endif;
		endforeach;

		if (!empty($fontSaveMsg)):
			$fontUploadFinalResponse['body'] = '';
			foreach ($fontSaveMsg as $formatKey => $formatData):
				if ($fontSaveMsg[$formatKey]['status'] == 'error'):
					$fontUploadFinalResponse['status'] = 'error';
					$fontUploadFinalResponse['body']   .= $formatData['body'].'<br/>';
				endif;
			endforeach;
		else:
			uaf_save_font_entry_to_db($font_name, $font_weight, $font_style, $fontNameToStore, $predefined_font_id);
			$fontUploadFinalResponse['status']   = 'success';
			$fontUploadFinalResponse['body']	 = 'Font Uploaded';
		endif;
	else:
		$fontUploadFinalResponse['status']   = 'error';
		$fontUploadFinalResponse['body']	 = $convertResponseArray['global']['msg'];
	endif;

	return $fontUploadFinalResponse;
}

function uaf_path_details(){
	$uaf_upload 		= wp_upload_dir();
	$uaf_upload_dir		= $uaf_upload['basedir'];
	$uaf_upload_dir 	= $uaf_upload_dir . '/useanyfont/';
	$uaf_upload_url		= $uaf_upload['baseurl'];
	$uaf_upload_url 	= $uaf_upload_url . '/useanyfont/';

	$pathReturn['dir'] 	= $uaf_upload_dir;
	$pathReturn['url'] 	= $uaf_upload_url;
	return $pathReturn;
}

function uaf_create_folder() {
    $uaf_upload_path = uaf_path_details();
    
    if (!is_dir($uaf_upload_path['dir'])) {
        if (!@mkdir($uaf_upload_path['dir'], 0755, true)) { 
            set_transient('uaf_folder_create_error', "Cannot create folder. Please check folder permissions.", 60 * 10);
        }
    }
}

function uaf_save_font_entry_to_db($font_name, $font_weight, $font_style, $font_path, $predefined_font_id = ''){
	$fontsRawData 	= get_option('uaf_font_data');
	$fontsData		= json_decode($fontsRawData, true);
	if (empty($fontsData)):
		$fontsData = array();
	endif;
	
	$fontArrayKey = date('ymdhis');	

	$fontsData[$fontArrayKey]	= array(	
									'font_name' => sanitize_title($font_name), 
									'font_path' => $font_path, 
									'predefined_font_id' => $predefined_font_id
								);

	if (!empty(trim($font_weight))){
		$fontsData[$fontArrayKey]['font_weight']	= sanitize_title($font_weight);
	}
	
	if (!empty(trim($font_style))){
		$fontsData[$fontArrayKey]['font_style']	= sanitize_title($font_style);
	}

	$updateFontData	= json_encode($fontsData);
	update_option('uaf_font_data',$updateFontData);
	uaf_write_css();
}

function uaf_write_css(){
	$uaf_use_absolute_font_path = $GLOBALS['uaf_user_settings']['uaf_use_absolute_font_path']; // Check if user want to use absolute font path.
	
	if (empty($uaf_use_absolute_font_path)){
		$uaf_use_absolute_font_path = 0;
	}
	
	$uaf_upload_path	= uaf_path_details();
	$uaf_upload_dir 	= $uaf_upload_path['dir'];
	$uaf_upload_url 	= $uaf_upload_path['url'];
	
	if ($uaf_use_absolute_font_path == 0){ // If user use relative path
		$url_parts = parse_url($uaf_upload_url);
		$uaf_upload_url = "$url_parts[path]";
	} else {
		if (is_ssl()){
			$uaf_upload_url 	= preg_replace('#^https?:#', 'https:', $uaf_upload_path['url']);
		}
	}

	ob_start();
		$fontsData		= uaf_get_uploaded_font_data();
		if (!empty($fontsData)):
			foreach ($fontsData as $key=>$fontData): ?>
				@font-face {
					font-family: '<?php echo esc_html($fontData['font_name']) ?>';
					src: <?php if (file_exists($uaf_upload_dir.$fontData['font_path'].'.woff2')){ ?>url('<?php echo esc_url($uaf_upload_url.$fontData['font_path']) ?>.woff2') format('woff2'),
						<?php } ?>url('<?php echo esc_url($uaf_upload_url.$fontData['font_path']) ?>.woff') format('woff');
					<?php echo array_key_exists('font_weight',$fontData)?'font-weight: '.esc_html($fontData['font_weight']).';':''; ?> <?php echo array_key_exists('font_style',$fontData)?'font-style: '.esc_html($fontData['font_style']).';':''; ?> font-display: <?php echo esc_html($GLOBALS['uaf_user_settings']['uaf_font_display_property']); ?>;
				}

				.<?php echo esc_html($fontData['font_name']) ?>{font-family: '<?php echo esc_html($fontData['font_name']) ?>' !important;}

		<?php
		endforeach;
		endif;
			
		$fontsImplementRawData 	= get_option('uaf_font_implement');
		$fontsImplementData		= json_decode($fontsImplementRawData, true);
		if (!empty($fontsImplementData)):
			foreach ($fontsImplementData as $key=>$fontImplementData): 
				if (isset($fontImplementData['font_name']) && !empty(trim($fontImplementData['font_name']))){
					$font_name = $fontImplementData['font_name'];
				} else {
					$font_name = $fontsData[$fontImplementData['font_key']]['font_name'];
				}?>
				<?php echo uaf_sanitize_css_selector($fontImplementData['font_elements']); ?>{
					font-family: '<?php echo esc_html($font_name);  ?>' !important;
				}
		<?php
			endforeach;
		endif;	
		$uaf_style = ob_get_contents();
		$uafStyleSheetPath	= $uaf_upload_path['dir'].'/uaf.css';
		if ($fh = @fopen($uafStyleSheetPath, 'w')) { // Suppress warnings and check if file opens
		    fwrite($fh, $uaf_style);
		    fclose($fh);
		} else {
		    set_transient('uaf_css_write_error', "Cannot write to CSS file. Please check file permissions.", 60 * 10); // Store error for 10 minutes
		}
	ob_end_clean();
	
	ob_start();
		$fontsData		= uaf_get_uploaded_font_data();
		if (!empty($fontsData)):
			foreach ($fontsData as $key=>$fontData): ?>
				@font-face {
					font-family: '<?php echo esc_html($fontData['font_name']) ?>';
					src: <?php if (file_exists($uaf_upload_dir.$fontData['font_path'].'.woff2')){ ?>url('<?php echo esc_url($uaf_upload_url.$fontData['font_path']) ?>.woff2') format('woff2'),
						<?php } ?>url('<?php echo esc_url($uaf_upload_url.$fontData['font_path']) ?>.woff') format('woff');
						<?php echo array_key_exists('font_weight',$fontData)?'font-weight: '.esc_html($fontData['font_weight']).';':''; ?> <?php echo array_key_exists('font_style',$fontData)?'font-style: '.esc_html($fontData['font_style']).';':''; ?> font-display: <?php echo esc_html($GLOBALS['uaf_user_settings']['uaf_font_display_property']); ?>;
				}

				.<?php echo esc_html($fontData['font_name']) ?>{font-family: '<?php echo esc_html($fontData['font_name']) ?>' !important;}

				.et_gf_<?php echo esc_html($fontData['font_name']) ?>{background:none !important;font-family:<?php echo esc_html($fontData['font_name']) ?>;text-indent:0 !important;font-size:25px;}

		<?php
		endforeach;
		endif;
		$uaf_style = ob_get_contents();
		$uafStyleSheetPath	= $uaf_upload_path['dir'].'/admin-uaf.css';
		if ($fh = @fopen($uafStyleSheetPath, 'w')) { // Suppress warnings and check if file opens
		    fwrite($fh, $uaf_style);
		    fclose($fh);
		} else {
		    set_transient('uaf_css_write_error', "Cannot write to CSS file. Please check file permissions.", 60 * 10); // Store error for 10 minutes
		}
				
		$uafStyleSheetPath	= $uaf_upload_path['dir'].'/admin-uaf-rtl.css';
		if ($fh = @fopen($uafStyleSheetPath, 'w')) { // Suppress warnings and check if file opens
		    fwrite($fh, $uaf_style);
		    fclose($fh);
		} else {
		    set_transient('uaf_css_write_error', "Cannot write to CSS file. Please check file permissions.", 60 * 10); // Store error for 10 minutes
		}

	ob_end_clean();
	update_option('uaf_css_updated_timestamp', time()); // Time entry for stylesheet version
	update_option('uaf_site_url', base64_encode(site_url()));
	uaf_clear_plugins_cache(); // CLEAN plugin's cache.	

	uaf_block_editor_custom_fonts();
}


function uaf_get_language_selector(){
	$enableMultiLang 	= '';
	$returnSelectHTML 	= '';
	if ($GLOBALS['uaf_user_settings']['uaf_enable_multi_lang_support'] == 1){
		$enableMultiLang = TRUE;
		$supported_multi_lang_plugins = $GLOBALS['uaf_fix_settings']['supported_multi_lang_plugins'];
		foreach ($supported_multi_lang_plugins as $key => $plugin_name) {
			if (is_plugin_active($plugin_name)){
				$active_multi_lang_plugin = $plugin_name;
			}
			//echo $active_multi_lang_plugin;
		}

		if (isset($active_multi_lang_plugin)){			
			switch ($active_multi_lang_plugin) {
				case 'polylang/polylang.php': // WHEN POLYLANG PLUGIN IS ACTIVATED.
						$active_languages = pll_languages_list(array('fields'=>''));
						foreach ($active_languages as $key => $active_language) {
							$lang_select_data[$active_language->w3c] = $active_language->name;
						}
					break;
				case 'polylang-pro/polylang.php': // WHEN POLYLANG PRO PLUGIN IS ACTIVATED.
						$active_languages = pll_languages_list(array('fields'=>''));
						foreach ($active_languages as $key => $active_language) {
							$lang_select_data[$active_language->w3c] = $active_language->name;
						}
					break;
				case 'sitepress-multilingual-cms/sitepress.php': // WHEN WPML PLUGIN IS ACTIVATED.
						$active_languages = icl_get_languages();
						foreach ($active_languages as $key => $active_language) {
							$lang_select_data[str_replace('_', '-',$active_language['default_locale'])] = $active_language['translated_name'].' ('.$active_language["native_name"].')';
						}
					break;
			}

			$returnSelectHTML = '<select style="width:200px;" class="uaf_required" name="language"><option selected="selected" value="">- Select - </option><option value="all_lang">All Languages</option>';
			foreach ($lang_select_data as $locale => $lang_name) {
				//$returnSelectHTML .= '<option value="body.language-'.$locale.'">'.$lang_name.'</option>';
				$returnSelectHTML .= '<option value="html:lang('.esc_attr($locale).')">'.esc_attr($lang_name).'</option>';		
			}
			$returnSelectHTML .= '</select>';
		} else {
			$returnSelectHTML = "You don't have multi lingual plugin active which is supported by Use Any Font.";
		}
	}
	
	
	$return['enableMultiLang'] 	= $enableMultiLang;
	$return['selectHTML'] 		= $returnSelectHTML;
	return $return;
}

function uaf_save_font_assign(){
	$font_key               = sanitize_key($_POST['font_key']);
	
	if (isset($_POST['elements'])) {
		$elements           = array_map('sanitize_text_field', $_POST['elements']);
	} else {
		$elements 			= array();
	}	
	
	$custom_elements		= trim(sanitize_textarea_field($_POST['custom_elements']));

	if ( empty($font_key) ) {
	    return array(
	        'status' => 'error',
	        'body'   => 'Please select a font before assigning.'
	    );
	}

	if ( empty($elements) && empty($custom_elements) ) {
	    return array(
	        'status' => 'error',
	        'body'   => 'Please select at least one element or add a custom element.'
	    );
	}

	$fontsData      		= uaf_get_uploaded_font_data();
	$font_name 				= $fontsData[$font_key]['font_name'];
	$fontsImplementRawData 	= get_option('uaf_font_implement');
	$fontsImplementData		= json_decode($fontsImplementRawData, true);

	if (empty($fontsImplementData)):
		$fontsImplementData = array();
	endif;
	
    $fontElements 	= array();
	$fontElements[] = @join(', ',$elements);
	$fontElements[] = @join(', ',array_filter(array_map('trim',explode("\n", $custom_elements))));
	$fontElements 	= array_filter(array_map('trim',$fontElements));
	$finalElements  = join(', ', $fontElements);	
    $finalElements  = uaf_langutizse_elements($finalElements);

	if (!empty($finalElements) && !empty($_POST['font_key'])){
		$fontsImplementData[date('ymdhis')]	= array(
											'font_key' 		=> $font_key,
											'font_name'		=> $font_name,
											'font_elements' => $finalElements
										);
		$updateFontsImplementData		= json_encode($fontsImplementData);
		update_option('uaf_font_implement',$updateFontsImplementData);
		uaf_write_css();
		$return['status']   = 'success';
		$return['body'] 	= 'Font Assigned';
	} else {
		$return['body']   	= "Couldn't assign font. Please select font and atleast one element or add a custom element";
        $return['status']   = "error";
	}
	return $return;
}

function uaf_langutizse_elements($finalElements){
	if (isset($_POST['language']) && ($_POST['language'] != 'all_lang')){
		  $language 		 = sanitize_text_field($_POST['language']);
          $finalElementArray = explode(',', $finalElements);
          $finalElementArray = array_map('trim', $finalElementArray);
          $prefixed_array    = preg_filter('/^/', $language.' ', $finalElementArray);
          $finalElements  = join(', ', $prefixed_array);
    }
    return $finalElements;
}

function uaf_delete_font(){
	$uaf_paths 		= uaf_path_details();

	$fontsData		= uaf_get_uploaded_font_data();
	$key_to_delete	= sanitize_key($_GET['delete_font_key']);
	
	@unlink(realpath($uaf_paths['dir'].$fontsData[$key_to_delete]['font_path'].'.woff2'));
	@unlink(realpath($uaf_paths['dir'].$fontsData[$key_to_delete]['font_path'].'.woff'));
	@unlink(realpath($uaf_paths['dir'].$fontsData[$key_to_delete]['font_path'].'.eot'));
	unset($fontsData[$key_to_delete]);
	$updateFontData	= json_encode($fontsData);
	update_option('uaf_font_data',$updateFontData);
	
	// DELETING FONT ASSIGN AFTER THE FONT IS DELETED. REMOVED DUE TO MULTI VARIATION COMPLICATIONS.
	/*$fontsImplementRawData 	= get_option('uaf_font_implement');
	$fontsImplementData		= json_decode($fontsImplementRawData, true);

	if (!empty($fontsImplementData)){
		foreach ($fontsImplementData as $implement_key => $font_assign_array) {
			if ($key_to_delete == $font_assign_array['font_key']){
				unset($fontsImplementData[$implement_key]);
			}
		}
		$updatefontsImplementData	= json_encode($fontsImplementData);
		update_option('uaf_font_implement',$updatefontsImplementData);
	}*/
	
	$return['status']   = 'success';
	$return['body'] 	= 'Font Deleted';
	uaf_write_css();
	return $return;
}

function uaf_delete_font_assign(){
	$fontsImplementRawData 	= get_option('uaf_font_implement');
	$fontsImplementData		= json_decode($fontsImplementRawData, true);
	$key_to_delete			= sanitize_key($_GET['delete_font_assign_key']);
	unset($fontsImplementData[$key_to_delete]);
	$updateFontsImplementData		= json_encode($fontsImplementData);
	update_option('uaf_font_implement',$updateFontsImplementData);
	uaf_write_css();
	$return['status']   = 'success';
	$return['body'] 	= 'Font assign removed';
	return $return;
}

function uaf_get_uploaded_predefined_fonts(){
	$fontsRawData 	= get_option('uaf_font_data');
	$fontsData		= json_decode($fontsRawData, true);
	$predefindFonts = array();
	if (!empty($fontsData)){
		foreach ($fontsData as $fontKey => $fontData) {
			if (isset($fontData['predefined_font_id']) && !empty(trim($fontData['predefined_font_id']))){
				$predefindFonts[] = $fontData['predefined_font_id'];	
			}			
		}
	}
	return $predefindFonts;
}

function uaf_add_pre_defined_font($fontId){
	$url 		= $GLOBALS['uaf_user_settings']['uaf_server_url']. '/uaf_convertor/import_predefine_font.php';
	$response 	= wp_remote_post( $url, array(
									    'method'      => 'POST',
									    'redirection' => 5,
									    'httpversion' => '1.0',
									    'timeout'	  => 10000,	
									    'body'        => array(
													        'api_key' 		=> $GLOBALS['uaf_user_settings']['uaf_api_key'],
													        'url'	 		=> base64_decode($GLOBALS['uaf_user_settings']['uaf_activated_url']),
													        'font_count' 	=> uaf_count_uploaded_fonts(),
													        'font_id'		=> $fontId
									    				 )
										)
			);
	if ( is_wp_error( $response ) ) {
	    $error_message = $response->get_error_message();
	    $return['status']    = 'error';		
		$return['body'] 	 = "Something went wrong: $error_message";
	} else {
	   	$responseArray = json_decode($response['body'], true);
		if ($responseArray['global']['status'] == 'error'):
			$return['status']    = 'error';
			$return['body']   	 = $responseArray['global']['msg'];
		else:
			$return = uaf_save_font_files($responseArray['global']['font_name'], '', '', $response['body'], $fontId);
		endif;
	}
	return $return;
}


function uaf_group_fontdata_by_fontname($fontDatas){
	$returnArray = array();
    if (!empty($fontDatas)){
    	foreach($fontDatas as $key => $value){
	       $returnArray[$value['font_name']][$key] = $value;
	    }	
    }    
    return $returnArray;
}

function uaf_order_font_by_weight($a, $b) {
      if (array_key_exists("font_weight", $a) && array_key_exists("font_weight", $b)) {
      	return strcmp($a["font_weight"], $b["font_weight"]);
  	  } else {
  	  	return 0;
  	  }
}

function uaf_css_write_error() {
    $error_message = get_transient('uaf_css_write_error');
    if ($error_message) {
        echo '<div class="notice notice-error is-dismissible">
                <p><strong>Use Any Font Error:</strong> ' . esc_html($error_message) . '</p>
              </div>';
        delete_transient('uaf_css_write_error'); // Remove the error after displaying
    }
}

function uaf_sanitize_css_selector( $selector ) {
    // Allow only valid CSS selector characters
    return preg_replace(
        '/[^A-Za-z0-9\s\-\_\.\#\>\:\,\*\+\~\[\]\=\"\'\(\)\/]/',
        '',
        $selector
    );
}