<?php
/**
 * Taxonomy API
 *
 * @package kirki
 */

namespace Kirki\Ajax;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

use Kirki\HelperFunctions;
use Exception;

/**
 * Taxonomy API Class
 */
class Taxonomy {
	public static function get_post_terms() {
		try {
			$id = HelperFunctions::sanitize_text( isset( $_GET['id'] ) ? $_GET['id'] : null );

			$taxonomy = HelperFunctions::sanitize_text( isset( $_GET['taxonomy'] ) ? $_GET['taxonomy'] : null );

			$taxonomies = get_the_terms( $id, $taxonomy );

			if ( $taxonomies instanceof \WP_Error ) {
				throw new Exception( 'Failed!' );
			}

			if ( is_array( $taxonomies ) ) {
				wp_send_json_success(
					$taxonomies
				);
			} else {
				wp_send_json_success( array() );
			}
		} catch ( Exception $e ) {
			wp_send_json_error(
				$e->getMessage(),
				$e->getCode() ?? 400
			);
		}

		die;
	}

	public static function get_terms() {
		try {
			$name = HelperFunctions::sanitize_text( isset( $_GET['name'] ) ? $_GET['name'] : null );

			$terms = get_terms(
				array(
					'taxonomy'   => $name,
					'hide_empty' => false,
				)
			);

			if ( $terms instanceof \WP_Error ) {
				throw new Exception( 'Error!' );
			}

			wp_send_json_success( $terms );
		} catch ( Exception $e ) {
			wp_send_json_error(
				$e->getMessage(),
				$e->getCode() ?? 400
			);
		}

		die;
	}

	public static function get_post_type_taxonomies() {
		try {
			$post_types = get_post_types( array(), 'objects' );
			$response   = array();

			foreach ( $post_types as $post_type => $details ) {
					$taxonomies = get_object_taxonomies( $post_type, 'objects' );
				if ( ! empty( $taxonomies ) ) {
						// Format taxonomies as array with value and title
						$formatted_taxonomies = array();
					foreach ( $taxonomies as $taxonomy ) {
							$formatted_taxonomies[] = array(
								'value' => $taxonomy->name,
								'title' => $taxonomy->label,
							);
					}

					if ( ! empty( $formatted_taxonomies ) ) {
							$response[] = array(
								'value'      => $post_type,
								'title'      => $details->label,
								'taxonomies' => $formatted_taxonomies,
							);
					}
				}
			}

			wp_send_json_success( $response );
		} catch ( Exception $e ) {
			wp_send_json_error(
				$e->getMessage(),
				$e->getCode() ?? 400
			);
		}
	}

	public static function get_post_type_from_term_id( $term_id ) {
		// Get the term object from the term ID
		$term = get_term( $term_id );
		// Check if the term exists
		if ( ! $term || is_wp_error( $term ) ) {
			return null;
		}
		// Get the taxonomy associated with the term
		$taxonomy = $term->taxonomy;
		// Get the post types associated with the taxonomy
		$post_types = get_post_types( array() );
		foreach ( $post_types as $key => $post_type ) {
			// Get all taxonomies associated with the post type
			$taxonomies = get_object_taxonomies( $post_type, 'objects' );
			if ( ! empty( $taxonomies ) ) {
				foreach ( $taxonomies as $taxonomy_slug => $taxonomy_object ) {
					if ( $taxonomy_slug === $taxonomy ) {
							return $post_type;
					}
				}
			}
		}
		return false;
	}

	public static function get_term_by_id( $term_id ) {
		$term = get_term( $term_id );
		$term = get_object_vars( $term );

		$post_type         = self::get_post_type_from_term_id( $term_id );
		$term['post_type'] = $post_type;

		return $term;
	}

	public static function get_all_terms_by_post_type() {
		$post_type = HelperFunctions::sanitize_text( isset( $_GET['post_type'] ) ? $_GET['post_type'] : null );

		// Get taxonomy objects related to the post type
		$taxonomies = get_object_taxonomies( $post_type, 'objects' );
		$result     = array();

		if ( count( $taxonomies ) > 0 ) {
			// Loop through each taxonomy
			foreach ( $taxonomies as $taxonomy_slug => $taxonomy_obj ) {
					// Get all terms for this taxonomy
					$terms = get_terms(
						array(
							'taxonomy'   => $taxonomy_slug,
							'hide_empty' => false,
						)
					);

					// Skip if error or empty
				if ( is_wp_error( $terms ) || empty( $terms ) ) {
						continue;
				}

					// Prepare term list with required fields
					$terms_array = array();
				foreach ( $terms as $term ) {
						$terms_array[] = array(
							'term_id' => $term->term_id,
							'name'    => $term->name,
							'slug'    => $term->slug,
						);
				}

					// Add taxonomy with terms to result
					$result[] = array(
						'value' => $taxonomy_slug,
						'title' => $taxonomy_obj->label,
						'terms' => $terms_array,
					);
			}
		}

		wp_send_json( $result );
	}

}