<?php

namespace cybot\cookiebot\lib;

use InvalidArgumentException;

class Consent_API_Helper {

	public function register_hooks() {
		// Include integration to WP Consent Level API if available
		if ( $this->is_wp_consent_api_active() ) {
			add_action( 'wp_enqueue_scripts', array( $this, 'cookiebot_enqueue_consent_api_scripts' ) );
			add_filter( 'wp_get_consent_type', array( $this, 'wp_consent_api_get_consent_type' ) );
		}
	}

	public function wp_consent_api_get_consent_type() {
		$region = get_option( 'cookiebot-primary-domain-region' );
		return ! empty( $region ) ? self::get_consent_type( $region ) : 'optin';
	}

	public static function get_consent_type( $region ) {
		$consent_type = 'optin';

		if ( in_array( $region, Supported_Regions::OPTOUT_REGIONS, true ) ) {
			$consent_type = 'optout';
		}

		return $consent_type;
	}

	/**
	 * Cookiebot_WP Check if WP Cookie Consent API is active
	 *
	 * @version 3.5.0
	 * @since       3.5.0
	 */
	public function is_wp_consent_api_active() {
		return is_plugin_active( 'wp-consent-api/wp-consent-api.php' );
	}

	/**
	 * Cookiebot_WP Enqueue JS for integration with WP Consent Level API
	 *
	 * @throws InvalidArgumentException
	 * @since   3.5.0
	 * @version 3.5.0
	 */
	public function cookiebot_enqueue_consent_api_scripts() {
		$is_cb_frame = Cookiebot_Frame::is_cb_frame_type() !== 'empty' && Cookiebot_Frame::is_cb_frame_type() === true;
		wp_register_script(
			'cookiebot-wp-consent-level-api-integration',
			$is_cb_frame ? asset_url( self::CB_FRAME_SCRIPT_PATH ) : asset_url( self::UC_FRAME_SCRIPT_PATH ),
			null,
			Cookiebot_WP::COOKIEBOT_PLUGIN_VERSION,
			false
		);
		wp_enqueue_script( 'cookiebot-wp-consent-level-api-integration' );
		wp_localize_script(
			'cookiebot-wp-consent-level-api-integration',
			'cookiebot_category_mapping',
			$this->get_wp_consent_api_mapping()
		);
		if ( $is_cb_frame ) {
			wp_localize_script(
				'cookiebot-wp-consent-level-api-integration',
				'cookiebot_consent_type',
				array(
					'type' => $this->wp_consent_api_get_consent_type(),
				)
			);
		}
	}

	/**
	 * Cookiebot_WP Get the mapping between Consent Level API and Cookiebot
	 * Returns array where key is the consent level api category and value
	 * is the mapped Cookiebot category.
	 *
	 * @version 3.5.0
	 * @since   3.5.0
	 */
	public function get_wp_consent_api_mapping() {
		$default_wp_consent_api_mapping = $this->get_default_wp_consent_api_mapping();

		if ( Cookiebot_Frame::is_cb_frame_type() === false ) {
			$mapping = get_option( 'cookiebot-uc-consent-mapping', $default_wp_consent_api_mapping );
		} else {
			$mapping = $this->get_cb_mapping( $default_wp_consent_api_mapping );
		}

		return $mapping;
	}

	/**
	 * Return CB Frame WP Consent API mapping
	 */
	private function get_cb_mapping( $default_wp_consent_api_mapping ) {
		$mapping = get_option( 'cookiebot-consent-mapping', $default_wp_consent_api_mapping );

		$mapping = ( '' === $mapping ) ? $default_wp_consent_api_mapping : $mapping;

		foreach ( $default_wp_consent_api_mapping as $k => $v ) {
			if ( ! isset( $mapping[ $k ] ) ) {
				$mapping[ $k ] = $v;
			} else {
				foreach ( $v as $vck => $vcv ) {
					if ( ! isset( $mapping[ $k ][ $vck ] ) ) {
						$mapping[ $k ][ $vck ] = $vcv;
					}
				}
			}
		}

		return $mapping;
	}

	/**
	 * Cookiebot_WP Default consent level mappings
	 *
	 * @version 3.5.0
	 * @since   3.5.0
	 */
	public function get_default_wp_consent_api_mapping() {
		if ( Cookiebot_Frame::is_cb_frame_type() === false ) {
			return array(
				'functional' => 'preferences',
				'marketing'  => 'marketing',
			);
		} else {
			return array(
				'n=1;p=1;s=1;m=1' =>
					array(
						'preferences'          => 1,
						'statistics'           => 1,
						'statistics-anonymous' => 0,
						'marketing'            => 1,
					),
				'n=1;p=1;s=1;m=0' =>
					array(
						'preferences'          => 1,
						'statistics'           => 1,
						'statistics-anonymous' => 1,
						'marketing'            => 0,
					),
				'n=1;p=1;s=0;m=1' =>
					array(
						'preferences'          => 1,
						'statistics'           => 0,
						'statistics-anonymous' => 0,
						'marketing'            => 1,
					),
				'n=1;p=1;s=0;m=0' =>
					array(
						'preferences'          => 1,
						'statistics'           => 0,
						'statistics-anonymous' => 0,
						'marketing'            => 0,
					),
				'n=1;p=0;s=1;m=1' =>
					array(
						'preferences'          => 0,
						'statistics'           => 1,
						'statistics-anonymous' => 0,
						'marketing'            => 1,
					),
				'n=1;p=0;s=1;m=0' =>
					array(
						'preferences'          => 0,
						'statistics'           => 1,
						'statistics-anonymous' => 0,
						'marketing'            => 0,
					),
				'n=1;p=0;s=0;m=1' =>
					array(
						'preferences'          => 0,
						'statistics'           => 0,
						'statistics-anonymous' => 0,
						'marketing'            => 1,
					),
				'n=1;p=0;s=0;m=0' =>
					array(
						'preferences'          => 0,
						'statistics'           => 0,
						'statistics-anonymous' => 0,
						'marketing'            => 0,
					),
			);
		}
	}

	const CB_FRAME_SCRIPT_PATH = 'js/frontend/cb_frame/cookiebot-wp-consent-level-api-integration.js';
	const UC_FRAME_SCRIPT_PATH = 'js/frontend/uc_frame/uc-wp-consent-level-api-integration.js';
}
