<?php

/**
 * This class act like controller for Editor, Iframe, Frontend
 *
 * @package kirki
 */

namespace Kirki;

use DateTime;
use Kirki\API\ContentManager\ContentManagerHelper;

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

/**
 * Frontend handler class
 */
class ElementVisibilityConditions {


	/**
	 * Initialize the class
	 *
	 * @return void
	 */
	public function __construct() {
		add_filter( 'kirki_visibility_condition_fields', array( $this, 'kirki_visibility_condition_fields' ), 10, 2 );
		add_filter( 'kirki_visibility_condition_check_kirki', array( $this, 'kirki_visibility_condition_check' ), 10, 3 );
	}

	public function kirki_visibility_condition_check( $default_value, $condition, $options ) {
		$condition_result = $default_value;

		$field    = $condition['field']['value'] ?? '';
		$group    = (string) ( $condition['field']['group'] ?? '' );
		$operator = $condition['operator']['value'] ?? '';
		$operand  = '';
		if ( $operator === 'date-in_between' ) {
			$operand = $condition['operand']['value'] ?? '';
		} else {
			$operand = (string) ( $condition['operand']['value'] ?? '' );
		}

		// Default field value
		$fieldValue = '';
		if ( $group === 'post' ) {
			if ( isset( $options['post'] ) ) {
				$post = $options['post'];
				if ( isset( $post->$field ) ) {
					  $fieldValue = (string) $post->$field;
				} elseif ( str_contains( $post->post_type, KIRKI_CONTENT_MANAGER_PREFIX ) ) {
					$cmsFields = ContentManagerHelper::format_single_child_post( $post );
					if ( isset( $cmsFields['fields'][ $field ] ) ) {

						$fieldValue = $cmsFields['fields'][ $field ];

						// check if the field value is on or off for switch type
						if ( $fieldValue === 'on' || $fieldValue === 'off' ) {
							$fieldValue = $fieldValue === 'on' ? true : false;
						}
					}
				}
			} else {
				return false;
			}
		} elseif ( $group === 'user' ) {
			$user = wp_get_current_user();
			if ( $field === 'role' ) {
				if ( is_user_logged_in() ) {
					$fieldValue   = $user->roles;
					$fieldValue[] = 'logged_in';
				} else {
					$fieldValue = array( 'guest' );
				}
			} elseif ( is_user_logged_in() ) {
				$fieldValue = $user->data->$field;
			}
		}

		// Evaluate condition
		switch ( $operator ) {
			case 'is_equal':
				$condition_result = ( $fieldValue === $operand );
				break;
			case 'not_equal':
				$condition_result = ( $fieldValue !== $operand );
				break;
			case 'contains':
				$condition_result = is_array( $fieldValue ) ? in_array( $operand, $fieldValue ) : ( stripos( $fieldValue, $operand ) !== false );
				break;
			case 'not_contains':
				$condition_result = is_array( $fieldValue ) ? ! in_array( $operand, $fieldValue ) : ( stripos( $fieldValue, $operand ) === false );
				break;
			case 'starts_with':
				$condition_result = ( stripos( $fieldValue, $operand ) === 0 );
				break;
			case 'ends_with':
				$condition_result = str_ends_with( strtolower( $fieldValue ), strtolower( $operand ) );
				break;
			case 'empty':
				$condition_result = empty( $fieldValue );
				break;
			case 'not_empty':
				$condition_result = ! empty( $fieldValue );
				break;
			case 'in_between':
				$condition_result = $fieldValue >= $operand[0] && $fieldValue <= $operand[1];
				break;
			case 'less_than':
				$condition_result = $fieldValue < $operand;
				break;
			case 'greater_than':
				$condition_result = $fieldValue > $operand;
				break;
			case 'less_than_or_equal':
				$condition_result = $fieldValue <= $operand;
				break;
			case 'greater_than_or_equal':
				$condition_result = $fieldValue >= $operand;
				break;
			case 'true':
				$condition_result = ! ! $fieldValue;
				break;
			case 'false':
				$condition_result = ! $fieldValue;
				break;
			case 'date-is_equal':
				$operand          = new DateTime( $operand );
				$fieldValue       = new DateTime( $fieldValue );
				$condition_result = $operand == $fieldValue;
				break;
			case 'date-not_equal':
				$operand          = new DateTime( $operand );
				$fieldValue       = new DateTime( $fieldValue );
				$condition_result = $operand != $fieldValue;
				break;
			case 'date-in_between':
				if ( ! isset( $operand['from'] ) || ! isset( $operand['to'] ) ) {
					return $default_value;
				}
				$from             = new DateTime( $operand['from'] );
				$to               = new DateTime( $operand['to'] );
				$fieldValue       = new DateTime( $fieldValue );
				$condition_result = $fieldValue >= $from && $fieldValue <= $to;
				return $condition_result;
			$condition_result = str_ends_with( strtolower( $fieldValue ), strtolower( $operand ) );
			break;
			case 'date-before':
				$operand          = new DateTime( $operand );
				$fieldValue       = new DateTime( $fieldValue );
				$condition_result = $fieldValue < $operand;
				break;
			case 'date-after':
				$operand          = new DateTime( $operand );
				$fieldValue       = new DateTime( $fieldValue );
				$condition_result = $fieldValue > $operand;
				break;
		}

		return $condition_result;
	}

	public function kirki_visibility_condition_fields( $conditions, $collection_data ) {
		if ( $collection_data['collectionType'] === 'posts' && str_contains( $collection_data['type'], KIRKI_CONTENT_MANAGER_PREFIX ) ) {
			$post_parent = str_replace( KIRKI_CONTENT_MANAGER_PREFIX . '_', '', $collection_data['type'] );
			$post        = ContentManagerHelper::get_post_type( $post_parent, true );

			$fields = $this->get_conditions_from_post_fields( $post );
			foreach ( $fields as $key => $field ) {
				$conditions['post']['fields'][] = $field;
			}
		}
		return $conditions;
	}

	private function get_conditions_from_post_fields( $post ) {
		$conditions = array();

		if ( ! empty( $post['fields'] ) && is_array( $post['fields'] ) ) {
			foreach ( $post['fields'] as $field ) {
				if ( empty( $field['id'] ) || empty( $field['title'] ) ) {
					continue;
				}

				$id    = $field['id'];
				$title = $field['title'];
				$type  = $field['type'];

				// Determine operators and values based on field type
				switch ( $type ) {
					case 'text':
					case 'rich-text':
					case 'email':
					case 'url':
					case 'phone':
						$operator_type = 'text_operators';
						break;

					case 'option':
						$operator_type = 'common_operator';
						break;

					case 'image':
					case 'file':
						$operator_type = 'media_operators';
						break;

					case 'switch':
							$operator_type = 'boolean_operators';
						break;
					case 'reference':
						$operator_type = array( 'is', 'is_not' );
						break;

					default:
						$operator_type = 'text_operators';
						break;
				}

				$conditions[] = array(
					'title'          => $title,
					'value'          => $id,
					'parent_post_id' => $post['ID'],
					'operator_type'  => $operator_type,
					'filed_type'     => KIRKI_CONTENT_MANAGER_PREFIX,
				);
			}
		}

		return $conditions;
	}
}