<?php

namespace QuadLayers\WOOCCM\View\Frontend;

/**
 * Fields_Handler Class
 */
class Fields_Handler {

	protected static $_instance;

	public function __construct() {
		// Prepare
		add_filter( 'wooccm_checkout_field_filter', array( $this, 'add_field_filter' ) );

		// Add field classes
		add_filter( 'wooccm_checkout_field_filter', array( $this, 'add_field_classes' ) );

		// Remove fields
		// -----------------------------------------------------------------------
		add_filter( 'woocommerce_checkout_fields', array( $this, 'remove_checkout_fields' ) );

		// Fix defualt address fields classes
		add_filter( 'wooccm_checkout_field_filter', array( $this, 'fix_address_fields_classes' ) );

		// Fix address_2 field
		// -----------------------------------------------------------------------
		// add_filter('default_option_woocommerce_checkout_address_2_field', array($this, 'woocommerce_checkout_address_2_field'));
		// Fix address fields priority, required, placeholder, label
		// add_filter('woocommerce_get_country_locale', '__return_empty_array');
		add_filter( 'woocommerce_get_country_locale_default', array( $this, 'remove_fields_priority' ) );
		add_filter( 'woocommerce_get_country_locale_base', array( $this, 'remove_fields_priority' ) );

		// Fix required country notice when shipping address is activated
		// -----------------------------------------------------------------------
		if ( is_account_page() ) {
			add_filter( 'woocommerce_checkout_posted_data', array( $this, 'remove_address_fields' ) );
		}

		// Clear session
		add_action( 'woocommerce_checkout_posted_data', array( $this, 'posted_data' ) );
	}

	public static function instance() {
		if ( is_null( self::$_instance ) ) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

	public function posted_data( $data ) {

		if ( isset( $_POST['woocommerce-process-checkout-nonce'] ) && wp_verify_nonce( wc_clean( wp_unslash( $_POST['woocommerce-process-checkout-nonce'] ) ), 'woocommerce-process_checkout' ) ) {

			$fields = WC()->session->wooccm['fields'] ?? array();

			if ( is_array( $fields ) && count( $fields ) ) {

				foreach ( $fields as $key => $field ) {

					switch ( $field['type'] ) {

						case 'multicheckbox':
							$data[ $key ] = isset( $_POST[ $key ] ) ? implode( ', ', wc_clean( wp_unslash( $_POST[ $key ] ) ) ) : '';

							break;

						case 'checkbox':
							if ( ! empty( $_POST[ $key ] ) ) {
								$data[ $key ] = esc_html__( 'Yes', 'woocommerce-checkout-manager' );
							}

							// else {
							// $data[$key] = esc_html__('No', 'woocommerce-checkout-manager');
							// }

							break;
					}
				}
			}

			return $data;
		}
	}

	public function add_field_filter( $field ) {
		if ( isset( WC()->session ) ) {
			$session_data = WC()->session->wooccm;
		}

		// keep attr id = attr name
		// -------------------------------------------------------------------------
		unset( $field['id'] );

		switch ( $field['type'] ) {

			case 'select':
			case 'radio':
				if ( ! empty( $field['options'] ) ) {
					if ( is_array( $field['options'] ) ) {
						$field['add_price_total'] = array_column( $field['options'], 'add_price_total' );
						$field['add_price_type']  = array_column( $field['options'], 'add_price_type' );
						$field['add_price_tax']   = array_column( $field['options'], 'add_price_tax' );
						$field['options']         = array_column( $field['options'], 'label' );
					}
				} else {
					$field['disabled'] = true;
				}

				break;

			case 'multiselect':
			case 'multicheckbox':
				if ( ! empty( $field['options'] ) ) {
					if ( is_array( $field['options'] ) ) {
						$field['add_price_total'] = array_column( $field['options'], 'add_price_total' );
						$field['add_price_type']  = array_column( $field['options'], 'add_price_type' );
						$field['add_price_tax']   = array_column( $field['options'], 'add_price_tax' );
						$field['default']         = array_column( $field['options'], 'default' );
						$field['options']         = array_column( $field['options'], 'label' );
					}
				} else {
					$field['disabled'] = true;
				}

				break;

			case 'heading':
				$field['required'] = false;
				break;
		}

		// Priority
		// -----------------------------------------------------------------------
		if ( isset( $field['order'] ) ) {
			$field['priority'] = $field['order'] * 10;
		}

		if ( isset( WC()->session ) ) {
			$session_data['fields'][ $field['key'] ] = $field;
			WC()->session->wooccm                    = $session_data;
		}

		return $field;
	}

	public function add_field_classes( $field ) {
		// Position
		// -----------------------------------------------------------------------
		if ( ! empty( $field['position'] ) ) {
			$field['class']   = array_diff( $field['class'], array( 'form-row-wide', 'form-row-first', 'form-row-last' ) );
			$field['class'][] = $field['position'];
		}

		// WOOCCM
		// -----------------------------------------------------------------------

		$field['class'][] = 'wooccm-field';
		$field['class'][] = 'wooccm-field-' . $field['name'];

		// Type
		// -----------------------------------------------------------------------
		if ( ! empty( $field['type'] ) ) {
			$field['class'][] = 'wooccm-type-' . $field['type'];
		}

		// Color
		// -----------------------------------------------------------------------
		if ( ! empty( $field['type'] ) && 'colorpicker' == $field['type'] ) {
			$field['class'][] = 'wooccm-colorpicker-' . $field['pickertype'];
		}

		// Extra
		// -----------------------------------------------------------------------
		if ( ! empty( $field['extra_class'] ) ) {
			$field['class'][] = $field['extra_class'];
		}

		// Clearfix
		// -----------------------------------------------------------------------
		if ( ! empty( $field['clear'] ) ) {
			$field['class'][] = 'wooccm-clearfix';
		}

		// Required
		// -----------------------------------------------------------------------

		if ( isset( $field['required'] ) ) {

			$required = (int) $field['required'];

			$field['custom_attributes']['data-required'] = $required;

			if ( $required ) {
				$field['input_class'][] = 'wooccm-required-field';
			}
		}

		// Number
		if ( 'number' == $field['type'] ) {
			if ( $field['max'] || 0 == $field['max'] ) {
				$field['custom_attributes']['max'] = (int) $field['max'];
			}
			if ( $field['min'] || 0 == $field['min'] ) {
				$field['custom_attributes']['min'] = (int) $field['min'];
			}
		}

		// Text/Textarea
		if ( 'text' == $field['type'] || 'textarea' == $field['type'] ) {
			if ( $field['maxlength'] ) {
				$field['custom_attributes']['maxlength'] = (int) $field['maxlength'];
			}
		}

		// Text
		if ( 'text' == $field['type'] ) {
			if ( $field['validate_regex'] ) {
				$field['custom_attributes']['validate_regex'] = $field['validate_regex'];
			}
		}

		// File
		if ( 'file' == $field['type'] ) {
			if ( $field['file_limit'] ) {
				$field['custom_attributes']['data-file-limit'] = absint( $field['file_limit'] );
			}
			if ( $field['file_types'] ) {
				$field['custom_attributes']['data-file-types'] = htmlentities( json_encode( $field['file_types'] ) );
			}
			if ( $field['file_max_size'] ) {
				$field['custom_attributes']['data-file-max-size'] = absint( $field['file_max_size'] );
			}
		}

		return $field;
	}

	public function remove_checkout_fields( $fields ) {
		foreach ( $fields as $key => $type ) {

			if ( is_array( $type ) ) {
				if ( count( $type ) ) {
					foreach ( $type as $field_id => $field ) {
						// Remove disabled
						// -------------------------------------------------------------------
						if ( ! empty( $field['disabled'] ) ) {
							unset( $fields[ $key ][ $field_id ] );
						}
					}
				}
			}
		}

		// Fix for required address field
		if (
			get_option( 'wooccm_checkout_force_shipping_address', 'no' ) === 'no' && // FixWarning: Undefined array key "shipping" in /wp-content/plugins/woocommerce/includes/class-wc-checkout.php on line 230
			get_option( 'woocommerce_ship_to_destination' ) == 'billing_only'
		) {
			unset( $fields['shipping'] );
		}

		return $fields;
	}

	// function woocommerce_checkout_address_2_field($option) {
	// return 'required';
	// }

	public function remove_fields_priority( $fields ) {

		if ( ! is_array( $fields ) ) {
			return $fields;
		}

		foreach ( $fields as $key => $field ) {
			if ( ! is_array( $fields[ $key ] ) ) {
				continue;
			}
			unset( $fields[ $key ]['label'] );
			unset( $fields[ $key ]['placeholder'] );
			unset( $fields[ $key ]['priority'] );
			unset( $fields[ $key ]['required'] );
			unset( $fields[ $key ]['class'] );
		}

		return $fields;
	}

	public function remove_address_fields( $data ) {
		$remove = array(
			'shipping_country',
			'shipping_address_1',
			'shipping_city',
			'shipping_state',
			'shipping_postcode',
		);

		foreach ( $remove as $key ) {
			if ( empty( $data[ $key ] ) ) {
				unset( $data[ $key ] );
			}
		}

		return $data;
	}

	public function fix_address_fields_classes( $field ) {
		if ( isset( $field['key'] ) ) {

			$key = str_replace( array( 'shipping_', 'billing_' ), '', $field['key'] );

			if ( in_array(
				$key,
				array(
					'country',
					'address_1',
					'address_2',
					'city',
					'state',
					'postcode',
				)
			) ) {

				$field['class'][] = 'address-field';

				if ( 'country' == $key ) {
					$field['class'][] = 'update_totals_on_change';
				}
			}
		}

		return $field;
	}
}