<?php

/**
 * vcex_post_terms shortcode output.
 *
 * @package Total WordPress Theme
 * @subpackage Total Theme Core
 * @version 2.5.1
 */

defined( 'ABSPATH' ) || exit;

// Define vars needed to get terms
$post_id = vcex_get_the_ID();
$taxonomy = ! empty( $atts['taxonomy'] ) ? sanitize_text_field( $atts['taxonomy'] ) : '';
$first_term_only = vcex_validate_att_boolean( 'first_term_only', $atts );
$template_edit_mode = vcex_is_template_edit_mode();

// Locate taxonomy if one isn't defined
if ( ! $template_edit_mode && ! $taxonomy && function_exists( 'wpex_get_post_primary_taxonomy' ) ) {
	$taxonomy = wpex_get_post_primary_taxonomy( $post_id );
}

// Taxonomy is required
if ( ! $template_edit_mode && ( empty( $taxonomy ) || ! taxonomy_exists( $taxonomy ) ) ) {
	return;
}

// Define terms
$terms = [];

// Dummy terms for dynamic templates
if ( $template_edit_mode ) {
	$dummy_link = '#';
	$sample_terms_number = $first_term_only ? 1 : 2;
	for ($i = 0; $i < $sample_terms_number; $i++) {
		$sample_term              = new stdClass();
		$sample_term->term_id     = $i;
		$sample_term->name        = esc_html__( 'Sample Term', 'total-theme-core' ) . ' ' . ( $i + 1 );
		$sample_term->slug        = "sample-term-{$i}";
		$sample_term->taxonomy    = 'sample-taxonomy';
		$sample_term->description = '';
		$sample_term->parent      = 0;
		$sample_term->count       = 1;
		$terms[]                  = $sample_term;
	}
}

// Get featured term
if ( ! $terms
	&& $first_term_only
	&& function_exists( 'totaltheme_get_post_primary_term' )
	&& $primary_term = totaltheme_get_post_primary_term( '', $taxonomy )
) {
	$terms = [ $primary_term ];
}

// If terms is empty lets query them
if ( ! $terms ) {

	// Sanitize order
	$order = ! empty( $atts['order'] ) ? sanitize_text_field( $atts['order'] ) : 'ASC';
	if ( ! in_array( strtoupper( $atts['order'] ), [ 'ASC', 'DESC' ], true ) ) {
		$order = 'ASC';
	}

	// Sanitize orderby
	$orderby = ! empty( $atts['orderby'] ) ? sanitize_text_field( $atts['orderby'] ) : 'name';
	if ( ! in_array( $orderby, [ 'name', 'slug', 'term_group', 'term_id', 'id', 'description' ], true ) ) {
		$orderby = 'name';
	}

	// Query arguments
	$query_args = [
		'order'   => $order,
		'orderby' => $orderby,
		'fields'  => 'all',
	];

	// Get child_of value - but we pass it as parent since it's always only shown the direct descendants
	if ( ! empty( $atts['child_of'] ) ) {
		$child_of = $atts['child_of'];
		if ( is_string( $child_of ) && ! is_numeric( $child_of ) ) {
			$child_of = get_term_by( 'slug', sanitize_text_field( $child_of ), $taxonomy );
			if ( $child_of && isset( $child_of->term_id ) ) {
				$query_args['parent'] = $child_of->term_id;
			}
		} else {
			if ( $child_of = absint( $child_of ) ) {
				$query_args['parent'] = $child_of;
			}
		}
	}

	// Exclude terms
	$exclude_terms = ! empty( $atts['exclude_terms'] ) 
		? preg_split( '/\,[\s]*/', $atts['exclude_terms'] ) 
		: [];

	$exclude_term_ids = [];

	if ( $exclude_terms ) {
		foreach ( $exclude_terms as $k => $term ) {
			if ( is_numeric( $term ) ) {
				$exclude_term_ids[] = $term;
				unset( $exclude_terms[ $k ] );
			}
		}
		if ( $exclude_terms ) {
			$terms_to_exclude = get_terms( [
				'taxonomy'   => $taxonomy,
				'slug'       => $exclude_terms,
				'fields'     => 'ids',
				'hide_empty' => false,
			] );
			if ( ! is_wp_error( $terms_to_exclude ) ) {
				$exclude_term_ids = array_merge( $exclude_term_ids, $terms_to_exclude );
			}
		}
	}

	if ( $exclude_term_ids ) {
		$query_args['exclude'] = $exclude_term_ids;
	}

	// Filters the vcex_post_terms shortcode query args
	$query_args = (array) apply_filters( 'vcex_post_terms_query_args', $query_args, $atts );

	$terms = wp_get_post_terms( $post_id, $taxonomy, $query_args );

	// Get first term only
	if ( $first_term_only && isset( $terms[0] ) ) {
		$terms = [ $terms[0] ];
	}

}

// Terms needed
if ( ! $terms || is_wp_error( $terms ) ) {
	return;
}

// Main vars
$style = ! empty( $atts['style'] ) ? sanitize_text_field( $atts['style'] ) : 'buttons';
$link_to_archive = vcex_validate_att_boolean( 'archive_link', $atts, true );

// Define output var
$output = '';

// Wrap classes
$wrap_class = [
	'vcex-post-terms',
	'vcex-module',
];

if ( 'buttons' === $style ) {
	$wrap_class[] = 'wpex-flex wpex-flex-wrap';
	if ( ! empty( $atts['spacing'] ) ) {
		$wrap_class[] = vcex_parse_gap_class( $atts['spacing'] );
	} else  {
		$wrap_class[] = 'wpex-gap-5';
	}
	if ( ! empty( $atts['button_align'] ) ) {
		$wrap_class[] = vcex_parse_justify_content_class( $atts['button_align'] );
	}
}

// Alignment
if ( ! empty( $atts['max_width'] ) ) {
	$wrap_class[] = 'wpex-max-w-100';
	$wrap_class[] = vcex_parse_align_class( ! empty( $atts['align'] ) ? sanitize_text_field( $atts['align'] ) : 'center' );
}

// Add extra classes
$extra_classes = vcex_get_shortcode_extra_classes( $atts, 'vcex_post_terms' );

if ( $extra_classes ) {
	$wrap_class = array_merge( $wrap_class, $extra_classes );
}

$wrap_class = vcex_parse_shortcode_classes( $wrap_class, 'vcex_post_terms', $atts );

// Begin output
$output .= '<div class="' . esc_attr( $wrap_class ) . '"' . vcex_get_unique_id( $atts ) . '>';

	// Define link vars
	$link_class = [
		'vcex-post-terms__item',
	];

	$link_class_xtra = [];

	// Button Style Classes and inline styles
	if ( 'buttons' === $style ) {
		$link_class_xtra[] = 'vcex-post-terms__item--btn';
		$link_class_xtra[] = vcex_get_button_classes(
			! empty( $atts['button_style'] ) ? $atts['button_style'] : '',
			! empty( $atts['button_color_style'] ) ? $atts['button_color_style'] : '',
			! empty( $atts['button_size'] ) ? $atts['button_size'] : ''
		);

		if ( 'false' == $atts['archive_link'] || ! $atts['archive_link'] ) {
			$link_class_xtra[] = 'wpex-cursor-default';
		}
	}

	// Before Text or Open list
	if ( 'inline' === $style && ! empty( $atts['before_text'] ) ) {
		$output .= '<span class="vcex-post-terms__label vcex-label">' . vcex_parse_text_safe( $atts['before_text'] ) . '</span> ';
	} elseif ( 'ul' === $style ) {
		$output .= '<ul class="vcex-post-terms__list">';
	} elseif ( 'ol' === $style ) {
		$output .= '<ol class="vcex-post-terms__list">';
	}

	// Loop through terms
	if ( is_array( $terms ) ) {
		$terms_count = 0;
		$first_run = true;
		foreach ( $terms as $term ) :

			// Get term id
			$term_id = absint( $term->term_id );

			// Set link class in loop to prevent issues with added term classes
			$item_link_class = $link_class;
			$item_link_class[] = "vcex-post-terms__item--{$term_id}";

			if ( $link_class_xtra ) {
				$item_link_class = array_merge( $item_link_class, $link_class_xtra );
			}

			// Add to counter
			$terms_count++;

			// Add li tags
			if ( 'ul' === $style || 'ol' === $style ) {
				$output .= '<li>';
			}

			// Filters the vcex_post_terms element link class
			$item_link_class = (array) apply_filters( 'vcex_post_terms_link_class', $item_link_class, $term, $atts );

			// Add term color classes
			if ( in_array( 'term_color', $atts, true ) && (bool) vcex_get_term_color( $term ) ) {
				if ( isset( $atts['button_color'] ) && 'term_color' === $atts['button_color'] ) {
					$item_link_class[] = "has-term-{$term_id}-color";
				} else {
					if ( isset( $atts['button_hover_color'] ) && 'term_color' === $atts['button_hover_color'] ) {
						$item_link_class[] = "has-term-{$term_id}-hover-color";
					}
				}
				if ( isset( $atts['button_background'] ) && 'term_color' === $atts['button_background'] ) {
					$item_link_class[] = "has-term-{$term_id}-background-color";
				} else {
					if ( isset( $atts['button_hover_background'] ) && 'term_color' === $atts['button_hover_background'] ) {
						$item_link_class[] = "has-term-{$term_id}-hover-background-color";
					}
				}
			}

			// Open term element
			if ( $link_to_archive ) {
				$output .= '<a' . vcex_parse_html_attributes( [
					'href'   => $dummy_link ?? get_term_link( $term, $taxonomy ),
					'class'  => $item_link_class,
					'target' => $atts['archive_link_target'] ?? '',
				] ) . '>';
			} else {
				$output .= '<span' . vcex_parse_html_attributes( [
					'class' => $item_link_class,
				] ) . '>';
			}

			// Display title
			$output .= esc_html( $term->name );

			// Close term element
			if ( $link_to_archive ) {
				$output .= '</a>';
			} else {
				$output .= '</span>';
			}

			// Add spacer for inline style
			if ( 'inline' === $style && $terms_count < count( $terms ) ) {
				if ( ! isset( $spacer ) ) {
					if ( ! empty( $atts['spacer'] ) ) {
						$output .= ' ';
						// Parse custom spacer, don't use sanitize_text_field because that will trim spaces
						$spacer = do_shortcode( wp_strip_all_tags( $atts['spacer'] ) );
					} else {
						$spacer = apply_filters( 'vcex_post_terms_default_spacer', '&comma;' );
					}
				}
				$output .= '<span class="vcex-post-terms__separator vcex-spacer">' . $spacer . '</span> ';
			}

			// Close li tags
			if ( 'ul' === $style || 'ol' === $style ) {
				$output .= '</li>';
			}

			$first_run = false;

		endforeach;
	}

	// Close UL list
	if ( 'ul' === $style ) {
		$output .= '</ul>';
	}

	// Open OL list
	elseif ( 'ol' === $style ) {
		$output .= '</ol>';
	}

// Close main wrapper
$output .= '</div>';

// @codingStandardsIgnoreLine
echo $output;