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<?php
/**
 * Custom pagination function.
 *
 * @package presscore
 * @since presscore 0.1
 */

// File Security Check
if ( ! defined( 'ABSPATH' ) ) { exit; }

if ( !function_exists( 'dt_paginator' ) ) {

function dt_paginator( $query = null, $opts = array() ) {
	global $wp_query, $paged, $wp_rewrite;

if ( !is_single() ) {
		$defaults = array(
			'wrap'              => '<div class="%CLASS%" role="navigation">%PREV%%LIST%%NEXT%</div>',
			'item_wrap'         => '<a href="%HREF%" %CLASS_ACT% data-page-num="%PAGE_NUM%">%TEXT%</a>',
			'first_wrap'        => '<a href="%HREF%" %CLASS_ACT% data-page-num="%PAGE_NUM%">%FIRST_PAGE%</a>',
			'last_wrap'         => '<a href="%HREF%" %CLASS_ACT% data-page-num="%PAGE_NUM%">%LAST_PAGE%</a>',
			'pages_wrap'        => '',
			'next_page_wrap'    => '%LINK%',
			'prev_page_wrap'    => '%LINK%',
			'ajaxing'           => false,
			'class'             => 'paginator',
			'item_class'        => '',
			'act_class'         => 'act',
			'pages_prev_class'  => 'nav-prev',
			'pages_next_class'  => 'nav-next',
			'always_show'       => 0,
			'dotleft_wrap'      => '<a href="javascript:void(0);" class="dots">%TEXT%</a>',
			'dotright_wrap'     => '<a href="javascript:void(0);" class="dots">%TEXT%</a>',
			'pages_text'        => _x( 'Page %CURRENT_PAGE% of %TOTAL_PAGES%', 'pagination defaults', 'the7mk2' ),
			'current_text'      => '%PAGE_NUMBER%',
			'page_text'         => '%PAGE_NUMBER%',
			'first_text'        => _x( 'First', 'pagination defaults', 'the7mk2' ),
			'last_text'         => _x( 'Last', 'pagination defaults', 'the7mk2' ),
			'prev_text'         => '<i class="fas fa-long-arrow-alt-left" aria-hidden="true"></i>',
			'next_text'         => '<i class="fas fa-long-arrow-alt-right" aria-hidden="true"></i>',
			'no_next'			=> '<span class="nav-next disabled"><i class="fas fa-long-arrow-alt-right" aria-hidden="true"></i></span>',
			'no_prev'			=> '<span class="nav-prev disabled"><i class="fas fa-long-arrow-alt-left" aria-hidden="true"></i></span>',
			'dotright_text'     => '&#8230;',
			'dotleft_text'      => '&#8230;',
			'num_pages'         => 5,
			'total_pages'       => true,
			'first_is_first_mode'	=> true,
			'query'             => is_object($query) ? $query : $wp_query,
			'max_num_pages'		=> 0,
			'found_posts'		=> 0,
			'posts_per_page'	=> 0,
			'paged'				=> 0,
			'format'            => '',
			'base'              => '',
			'return'            => false,
		);
		$opts = wp_parse_args( $opts, $defaults );
		$opts = apply_filters('dt_paginator_args', $opts);

// setup query
		$query = $opts['query'];
		if( !is_object($query) ) {
			$query = $wp_query;
		}

$paged = $opts['paged'];
		if ( ! $paged && ! $paged = (int) get_query_var( 'page' ) ) {
			$paged = (int) get_query_var( 'paged' );
		}

$max_page = $opts['max_num_pages'] ? $opts['max_num_pages'] : $query->max_num_pages;
		
		if(empty($paged) || $paged == 0) {
			$paged = 1;
		}
		
		if ( $opts['num_pages'] <= 0 ) { $opts['num_pages'] = 1; }
		
		$pages_to_show = absint($opts['num_pages']);
		$pages_to_show_minus_1 = $pages_to_show-1;
		$half_page_start = floor($pages_to_show_minus_1/2);
		$half_page_end = ceil($pages_to_show_minus_1/2);
		$start_page = $paged - $half_page_start;
		
		if($start_page <= 0) {
			$start_page = 1;
		}
		
		$end_page = $paged + $half_page_end;
		
		if(($end_page - $start_page) != $pages_to_show_minus_1) {
			$end_page = $start_page + $pages_to_show_minus_1;
		}
		
		if($end_page > $max_page) {
			$start_page = $max_page - $pages_to_show_minus_1;
			$end_page = $max_page;
		}
		
		$end_page = absint( $end_page );
		
		if($start_page <= 0) {
			$start_page = 1;
		}

$output = '';
		$pages_list = '';

$opts['item_wrap'] = str_replace( '%ITEM_CLASS%', $opts['item_class'], $opts['item_wrap'] );

if( $opts['ajaxing'] ) {
			add_filter( 'get_pagenum_link', 'dt_ajax_paginator_filter', 10, 1);
		}
		// Setting up default values based on the current URL.
		$pagenum_link = html_entity_decode( get_pagenum_link() );
		remove_filter( 'get_pagenum_link', 'dt_ajax_paginator_filter', 10, 1);
		$url_parts    = explode( '?', $pagenum_link );

// Append the format placeholder to the base URL.
		$base = $opts['base'];
		if ( ! $base ) {
			$base = $pagenum_link = trailingslashit( $url_parts[0] ) . '%_%';
		}

$format = $opts['format'];
		if ( ! $format ) {
			// URL base depends on permalink settings.
			$format = $wp_rewrite->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
			$format .= $wp_rewrite->using_permalinks() ? user_trailingslashit( $wp_rewrite->pagination_base . '/%#%', 'paged' ) : '?paged=%#%';
		}

if ( $max_page > 1 || (int) $opts['always_show'] === 1) {
			add_filter( 'dt_next_posts_link_attributes', 'dt_paginator_add_posts_link_attr', 10, 2 );
			add_filter( 'dt_previous_posts_link_attributes', 'dt_paginator_add_posts_link_attr', 10, 2 );

$pages_next = dt_get_next_posts_link($opts['next_text'], $max_page, 'class="' . sanitize_html_class($opts['pages_next_class']) . '"', str_replace( '%_%', $format, $base ), $paged );
			$pages_prev = dt_get_previous_posts_link($opts['prev_text'], 'class="' . sanitize_html_class($opts['pages_prev_class']) . '"', str_replace( '%_%', $paged === 2 ? '' : $format, $base ), $paged );

remove_filter( 'dt_next_posts_link_attributes', 'dt_paginator_add_posts_link_attr', 10, 2 );
			remove_filter( 'dt_previous_posts_link_attributes', 'dt_paginator_add_posts_link_attr', 10, 2 );

if ( ! $pages_next ) {
				$pages_next = $opts['no_next'];
			} else {
				$pages_next = str_replace('%LINK%', $pages_next, $opts['next_page_wrap']);
			}

if ( ! $pages_prev ) {
				$pages_prev = $opts['no_prev'];
			} else {
				$pages_prev = str_replace('%LINK%', $pages_prev, $opts['prev_page_wrap']);
			}

$loop_start = $start_page;
			$loop_end = $end_page;
			$dots_left_point = 1;
			$dots_right_point = $max_page;

if ( $opts['first_is_first_mode'] ) {
				if ( 1 == $start_page ) {
					$loop_start++;
				}

if ( $max_page == $end_page ) {
					$loop_end--;
				}

$dots_left_point++;
				$dots_right_point--;

}

if( $paged > 1 || $opts['first_is_first_mode'] ) {

$act_class = $class_act = '';
				if ( 1 === $paged ) {
					$act_class = $opts['act_class'];
					$class_act = 'class="' . $opts['act_class'] . '"';
				}

$link = str_replace( '%_%', '', $base );
				$link = str_replace( '%#%', 1, $link );

$pages_list .= str_replace(
					array(
						'%HREF%',
						'%TEXT%',
						'%FIRST_PAGE%',
						'%ACT_CLASS%',
						'%CLASS_ACT%',
						'%PAGE_NUM%'
					),
					array(
						esc_url( $link ),
						$opts['first_text'],
						1,
						$act_class,
						$class_act,
						1
					),
					$opts['first_wrap']
				);
			}

if ( $start_page > $dots_left_point && $pages_to_show < $max_page ) {   
				if(!empty($opts['dotleft_text'])) {

if ( $opts['first_is_first_mode'] ) {
						$class_act = $curr_class = '';
						$pages_list .= '<div style="display: none;">';
						for ( $i = 2; $i < $loop_start; $i++ ) {
							$link = str_replace( '%_%', $format, $base );
							$link = str_replace( '%#%', $i, $link );
							$page_text = str_replace( "%PAGE_NUMBER%", number_format_i18n($i), $opts['page_text'] );
							$pages_list .= str_replace(
								array(
									'%ITEM_CLASS%',
									'%HREF%',
									'%TEXT%',
									'%ACT_CLASS%',
									'%CLASS_ACT%',
									'%PAGE_NUM%'
								),
								array(
									$opts['item_class'],
									esc_url($link),
									$page_text,
									$curr_class,
									$class_act,
									$i
								),
								$opts['item_wrap']
							);
						}
						$pages_list .= '</div>';
					}

$pages_list .= str_replace( '%TEXT%', $opts['dotleft_text'], $opts['dotleft_wrap'] );
				}
			}

for($i = $loop_start; $i <= $loop_end; $i++) {
				if ( $i == $paged ) {
					$page_text = str_replace(
						"%PAGE_NUMBER%",
						number_format_i18n($i),
						$opts['current_text']
					);
					$curr_class = $opts['act_class'];
					$class_act = 'class="' . $opts['act_class'] . '"';
				} else {
					$page_text = str_replace(
						"%PAGE_NUMBER%",
						number_format_i18n($i),
						$opts['page_text']
					);
					$curr_class = $class_act = '';
				}

$link = str_replace( '%_%', 1 === $i ? '' : $format, $base );
				$link = str_replace( '%#%', $i, $link );

$pages_list .= str_replace(
					array(
						'%ITEM_CLASS%',
						'%HREF%',
						'%TEXT%',
						'%ACT_CLASS%',
						'%CLASS_ACT%',
						'%PAGE_NUM%'
					),
					array(
						$opts['item_class'],
						esc_url( $link ),
						$page_text,
						$curr_class,
						$class_act,
						$i
					),
					$opts['item_wrap']
				);
			}

if ( $end_page < $dots_right_point ) {
				if(!empty($opts['dotright_text'])) {
					$pages_list .= str_replace( '%TEXT%', $opts['dotright_text'], $opts['dotright_wrap'] );

if ( $opts['first_is_first_mode'] ) {
						$class_act = $curr_class = '';
						$pages_list .= '<div style="display: none;">';
						for ( $i = $loop_end+1; $i <= $dots_right_point; $i++ ) {
							$link = str_replace( '%_%', $format, $base );
							$link = str_replace( '%#%', $i, $link );
							$page_text = str_replace( "%PAGE_NUMBER%", number_format_i18n($i), $opts['page_text'] );
							$pages_list .= str_replace(
								array(
									'%ITEM_CLASS%',
									'%HREF%',
									'%TEXT%',
									'%ACT_CLASS%',
									'%CLASS_ACT%',
									'%PAGE_NUM%'
								),
								array(
									$opts['item_class'],
									esc_url( $link ),
									$page_text,
									$curr_class,
									$class_act,
									$i
								),
								$opts['item_wrap']
							);
						}
						$pages_list .= '</div>';
					}
				}
			}

if( $paged < $max_page || $opts['first_is_first_mode'] ) {

$act_class = $class_act = '';
				if ( $max_page == $paged ) {
					$act_class = $opts['act_class'];
					$class_act = 'class="' . $opts['act_class'] . '"';
				}

$link = str_replace( '%_%', $format, $base );
				$link = str_replace( '%#%', $max_page, $link );

$pages_list .= str_replace(
					array(
						'%HREF%',
						'%TEXT%',
						'%LAST_PAGE%',
						'%ACT_CLASS%',
						'%CLASS_ACT%',
						'%PAGE_NUM%'
					),
					array(
						esc_url( $link ),
						$opts['last_text'],
						$max_page,
						$act_class,
						$class_act,
						$i
					),
					$opts['last_wrap']
				);
			}

$pages_text = str_replace(
				array( '%CURRENT_PAGE%', '%TOTAL_PAGES%' ),
				array( number_format_i18n($paged), number_format_i18n($max_page) ),
				$opts['pages_text']
			);

$output = str_replace(
				array( '%CLASS%', '%LIST%', '%TOTAL_PAGES_TEXT%', '%PREV%', '%NEXT%' ),
				array( $opts['class'], $pages_list, $pages_text, $pages_prev, $pages_next ),
				$opts['wrap'] . ( isset($opts['pages_wrap']) ? $opts['pages_wrap'] : '' )
			);

if ( $opts['return'] ) {
				return $output;
			}

echo $output;
		}
	}
}

} // !function_exists

function dt_ajax_paginator_filter( $result ) {
	global $wp_rewrite;

$page_permalink = get_permalink();
	$admin_url = admin_url( 'admin-ajax.php' );

$search = array(
		'&paged=',
		'?paged=',
		'/page/'
	);

$pagenum = 1;

foreach( $search as $exp ) {
		$str = explode( $exp, $result );

if ( isset($str[1]) ) {
			$pagenum = $str[1];
			break;
		}
	}

$pagenum = (int) $pagenum;

$request = remove_query_arg( 'paged' );

$home_root = parse_url(home_url());
	$home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
	$home_root = preg_quote( $home_root, '|' );

$request = preg_replace('|^'. $home_root . '|i', '', $request);
	$request = preg_replace('|^/+|', '', $request);

if ( !$wp_rewrite->using_permalinks() ) {
		$base = home_url( '/' );

if ( $pagenum > 1 ) {
			$result = add_query_arg( 'paged', $pagenum, $base . $request );
		} else {
			$result = $base . $request;
		}
	} else {
		$qs_regex = '|\?.*?$|';
		preg_match( $qs_regex, $request, $qs_match );

if ( !empty( $qs_match[0] ) ) {
			$query_string = $qs_match[0];
			$request = preg_replace( $qs_regex, '', $request );
		} else {
			$query_string = '';
		}

$base = home_url( '/' );

if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) ) {
			$base .= $wp_rewrite->index . '/';
		}

if ( $pagenum > 1 ) {
			$request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . "/" . $pagenum, 'paged' );
		}

$result = $base . $request . $query_string;
	}

$result = str_replace( array( trailingslashit($admin_url), $admin_url ), $page_permalink, $result );

return esc_url( $result );
}

/**
 * Description here.
 *
 */
function dt_paginator_add_posts_link_attr( $attr, $nextpage = 0 ) {
	if ( $nextpage ) {
		$attr .= ' data-page-num="' . absint($nextpage) . '"';
	}
	return $attr;
}

/**
 * Description here.
 *
 * @see get_next_posts_link
 */
function dt_get_next_posts_link( $label = null, $max_page = 0, $attr = '', $base = '', $current = null ) {
	global $paged, $wp_query;

if ( is_single() ) {
		return '';
	}

$paged_origin = $paged;
	$paged = $paged ? $paged : 1;
	$current = $current !== null ? $current : $paged;
	$nextpage = $current + 1;
	$max_page = $max_page ? $max_page : $wp_query->max_num_pages;

if ( $nextpage > $max_page ) {
		return '';
	}

if ( $base ) {
		$link = str_replace( '%#%', $nextpage, $base );
	} else {
		$paged = $current;
		$link = next_posts( $max_page, false );
		$paged = $paged_origin;
	}

$label = $label ? $label : '';
	$attr = apply_filters( 'dt_next_posts_link_attributes', $attr, $nextpage, $max_page );

return '<a href="' . esc_url( $link ) . '" ' . $attr . ' >' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
}

/**
 * Description here.
 *
 * @see get_previous_posts_link
 */
function dt_get_previous_posts_link( $label = null, $attr = '', $base = '', $current = null ) {
	global $paged;

if ( is_single() ) {
		return '';
	}

$paged_origin = $paged;
	$paged = $paged ? $paged : 1;
	$current = $current !== null ? (int) $current : $paged;

if ( $current < 2 ) {
		return '';
	}

$prev_page = $current - 1;
	if ( $base ) {
		$link = str_replace( '%#%', $prev_page, $base );
	} else {
		$paged = $current;
		$link = get_previous_posts_page_link();
		$paged = $paged_origin;
	}

$label = $label ? $label : '';
	$attr = apply_filters( 'dt_previous_posts_link_attributes', $attr, $prev_page );

return '<a href="' . esc_url( $link ) . '" ' . $attr . ' >'. preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) .'</a>';
}

if ( ! function_exists( 'presscore_paginator_show_all_pages_filter' ) ) :

/**
	 * Implements show all pages behaviour.
	 *
	 * @since 5.0.0
	 *
	 * @param array $args
	 * @return array
	 */
	function presscore_paginator_show_all_pages_filter( $args ) {
		if ( is_page() && presscore_config()->get_bool( 'show_all_pages' ) ) {
			$args['num_pages'] = 9999;
		}

return $args;
	}

add_filter( 'dt_paginator_args', 'presscore_paginator_show_all_pages_filter' );

endif;