<?php

/**
 * Manager User data
 *
 * @package kirki
 */

namespace Kirki\Ajax;

use Kirki\HelperFunctions;

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

/**
 * Apps API Class
 */
class Apps {


	/**
	 * get_user_installed_apps_list
	 *
	 * @return void wp_send_json
	 */
	public static function get_app_list() {
		 $apps = HelperFunctions::get_global_data_using_key( 'kirki_installed_apps' );
		if ( ! $apps ) {
			$apps = array();
		}
		$apps = HelperFunctions::http_get( KIRKI_APPS_BASE_URL . '/apps.json', array( 'sslverify' => false ) );
		wp_send_json_success( json_decode( $apps ) );
	}

	/**
	 * get_user_installed_apps_list
	 *
	 * @return void wp_send_json
	 */
	public static function get_installed_apps_list() {
		$apps = HelperFunctions::get_global_data_using_key( 'kirki_installed_apps' );
		if ( ! $apps ) {
			$apps = array();
		}
		wp_send_json_success( $apps );
	}

	/**
	 * get_app_settings_using_slug
	 *
	 * @return void wp_send_json
	 */
	public static function get_app_settings_using_slug() {
		$user_id = get_current_user_id();
		if ( ! empty( $user_id ) ) {
			$app_slug = HelperFunctions::sanitize_text( isset( $_GET['slug'] ) ? $_GET['slug'] : null );
			$settings = HelperFunctions::get_global_data_using_key( 'kirki_app_settings_' . $app_slug );
			if ( ! $settings ) {
				$settings = array();
			}
			$settings = apply_filters( 'kirki_apps_configuration_' . $app_slug, $settings );
			wp_send_json_success( $settings );
		}
		wp_send_json_error( 'User authentication failed. Please log in.' );
		die();
	}

	/**
	 * get_app_settings_using_slug
	 *
	 * @return void wp_send_json
	 */
	public static function save_app_settings_using_slug() {
		 $user_id = get_current_user_id();
		if ( ! empty( $user_id ) ) {
			$app_slug = HelperFunctions::sanitize_text( isset( $_POST['slug'] ) ? $_POST['slug'] : null );
			$settings = HelperFunctions::sanitize_text( isset( $_POST['settings'] ) ? $_POST['settings'] : null );
			$settings = json_decode( stripslashes( $settings ), true );
			HelperFunctions::update_global_data_using_key( 'kirki_app_settings_' . $app_slug, $settings );
			wp_send_json_success( true );
		}
		wp_send_json_error( 'User authentication failed. Please log in.' );
		die();
	}

	public static function install_app() {
		error_reporting( E_ALL );
		ini_set( 'display_errors', 1 );

		$user_id = get_current_user_id();
		if ( ! empty( $user_id ) ) {
			$app = HelperFunctions::sanitize_text( isset( $_POST['app'] ) ? $_POST['app'] : null );
			$app = json_decode( stripslashes( $app ), true );

			$app_slug = preg_replace( '/[^a-zA-Z0-9\-]/', '', $app['slug'] );

			$src = $app['src'];

			$version = isset( $app['version'] ) ? $app['version'] : '1.0.0';

			// Get the installed apps data
			$apps = HelperFunctions::get_global_data_using_key( 'kirki_installed_apps' );
			if ( ! $apps ) {
				$apps = array();
			}

			// Check if the app is already installed
			if ( in_array( $app_slug, $apps ) ) {
				wp_send_json_error( 'This app is already installed. Please check the kirki-apps directory in wp-content folders.' );
			}

			// Define the remote zip URL and generate a unique file name
			$remote_zip_url = KIRKI_APPS_BASE_URL . $src;
			$file_name_new  = uniqid( '', true ) . '.zip'; // 'random.ext'

			// Check if ZipArchive extension is loaded
			if ( ! class_exists( 'ZipArchive' ) ) {
				wp_send_json_error( 'ZipArchive extension is not installed or enabled on the server.' );
			}

			// Attempt to download the zip file
			$zip_file_path = HelperFunctions::download_zip_from_remote( $remote_zip_url, $file_name_new );

			try {
				// If the file was successfully downloaded
				if ( $zip_file_path ) {
					$zip = new \ZipArchive();
					$res = $zip->open( $zip_file_path );

					if ( $res === true ) {
						// Get the WordPress wp-content directory
						$base_upload_dir = WP_CONTENT_DIR; // Absolute path to 'uploads'
						$temp_folder     = $base_upload_dir . '/kirki-apps';

						// Check if the wp-content directory is writable
						global $wp_filesystem;
						if ( empty( $wp_filesystem ) ) {
							require_once ABSPATH . 'wp-admin/includes/file.php';
							WP_Filesystem();
						}

						if ( ! $wp_filesystem->is_writable( $base_upload_dir ) ) {
							wp_delete_file( $zip_file_path );
							wp_send_json_error( 'The wp-content directory is not writable. Please check folder permissions.' );
							return;
						}

						// Create the 'kirki-apps' folder if it doesn't exist
						if ( ! file_exists( $temp_folder ) ) {
							if ( ! wp_mkdir_p( $temp_folder ) ) {
								wp_delete_file( $zip_file_path );
								wp_send_json_error( 'Failed to create directory: kirki-apps. Please check folder permissions.' );
								return;
							}
						}

						// Extract the zip file to the 'kirki-apps' folder
						$zip->extractTo( $temp_folder );
						$zip->close();

						// Clean up the zip file
						wp_delete_file( $zip_file_path );

						// Update the list of installed apps
						$apps[] = array(
							'app_slug' => $app_slug,
							'version'  => $version,
						);
						HelperFunctions::update_global_data_using_key( 'kirki_installed_apps', $apps );

						wp_send_json_success( 'App installed successfully!' );
					} else {
						wp_delete_file( $zip_file_path );
						wp_send_json_error( 'Failed to extract the zip file. Please ensure the file is valid.' );
					}
				} else {
					wp_send_json_error( 'Failed to download the app zip file. Please check the remote URL.' );
				}
			} catch ( \Throwable $th ) {
				// Log the error or handle it as needed
				wp_delete_file( $zip_file_path ); // Clean up the zip file if it exists
				wp_send_json_error( 'An error occurred during the app installation: ' . $th->getMessage() );
			}
		} else {
			wp_send_json_error( 'User authentication failed. Please log in.' );
		}
		die();
	}


	public static function delete_app_using_slug() {
		$user_id = get_current_user_id();
		if ( ! empty( $user_id ) ) {
			$app_slug = HelperFunctions::sanitize_text( isset( $_POST['slug'] ) ? $_POST['slug'] : null );

			$apps = HelperFunctions::get_global_data_using_key( 'kirki_installed_apps' );
			if ( ! $apps ) {
				$apps = array();
			}

			$is_app_present = false;

			foreach ( $apps as $app ) {
				if ( isset( $app['app_slug'] ) && $app['app_slug'] === $app_slug ) {
					$is_app_present = true;
					break;
				}
			}

			if ( $is_app_present ) {
				$base_upload_dir = WP_CONTENT_DIR; // Absolute path to 'uploads'
				$app_folder      = $base_upload_dir . '/kirki-apps/' . $app_slug;

				$arr = array();
				foreach ( $apps as $key => $a ) {
					if ( isset( $a['app_slug'] ) && $a['app_slug'] !== $app_slug ) {
						$arr[] = $a;
					}
				}

				HelperFunctions::update_global_data_using_key( 'kirki_installed_apps', $arr );
				HelperFunctions::delete_directory( $app_folder );
				HelperFunctions::update_global_data_using_key( 'kirki_app_settings_' . $app_slug, false );
				wp_send_json_success( 'success' );
			}

			wp_send_json_error( 'App not found!' );
		}
		die();
	}

	public static function update_app() {
		error_reporting( E_ALL );
		ini_set( 'display_errors', 1 );

		$user_id = get_current_user_id();
		if ( empty( $user_id ) ) {
			wp_send_json_error( 'User authentication failed. Please log in.' );
		}

		try {
			$app = HelperFunctions::sanitize_text( isset( $_POST['app'] ) ? $_POST['app'] : null );
			$app = json_decode( stripslashes( $app ), true );

			if ( ! $app || ! isset( $app['slug'] ) || ! isset( $app['src'] ) || ! isset( $app['version'] ) ) {
				wp_send_json_error( 'Invalid app data provided.' );
			}

			$app_slug    = preg_replace( '/[^a-zA-Z0-9\-]/', '', $app['slug'] );
			$src         = $app['src'];
			$new_version = $app['version'];

			// Check if the app is installed
			$apps = HelperFunctions::get_global_data_using_key( 'kirki_installed_apps' );
			if ( ! $apps ) {
				wp_send_json_error( 'No apps are currently installed.' );
			}

			$app_found       = false;
			$current_version = '';
			foreach ( $apps as $installed_app ) {
				if ( isset( $installed_app['app_slug'] ) && $installed_app['app_slug'] === $app_slug ) {
					$app_found       = true;
					$current_version = $installed_app['version'];
					break;
				}
			}

			if ( ! $app_found ) {
				wp_send_json_error( 'App not found in installed apps.' );
			}

			// Check if ZipArchive is available
			if ( ! class_exists( 'ZipArchive' ) ) {
				wp_send_json_error( 'ZipArchive extension is not installed or enabled on the server.' );
			}

			$base_upload_dir = WP_CONTENT_DIR;
			$apps_folder     = $base_upload_dir . '/kirki-apps';
			$app_folder      = $apps_folder . '/' . $app_slug;
			$backup_folder   = $app_folder . '_backup_' . time();

			global $wp_filesystem;
			if ( empty( $wp_filesystem ) ) {
				require_once ABSPATH . 'wp-admin/includes/file.php';
				WP_Filesystem();
			}

			// Create backup of current app
			if ( ! $wp_filesystem->move( $app_folder, $backup_folder ) ) {
				wp_send_json_error( 'Failed to create backup of current app version.' );
			}

			// Download and extract new version
			$remote_zip_url = KIRKI_APPS_BASE_URL . $src;
			$file_name_new  = uniqid( '', true ) . '.zip';
			$zip_file_path  = HelperFunctions::download_zip_from_remote( $remote_zip_url, $file_name_new );

			if ( ! $zip_file_path ) {
				// Restore backup
				$wp_filesystem->move( $backup_folder, $app_folder );
				wp_send_json_error( 'Failed to download the new app version.' );
			}

			$zip = new \ZipArchive();
			$res = $zip->open( $zip_file_path );

			if ( $res !== true ) {
				// Restore backup
				$wp_filesystem->move( $backup_folder, $app_folder );
				wp_delete_file( $zip_file_path );
				wp_send_json_error( 'Failed to extract the zip file. Please ensure the file is valid.' );
			}

			// Extract new version
			if ( ! $zip->extractTo( $apps_folder ) ) {
				// Restore backup
				$wp_filesystem->move( $backup_folder, $app_folder );
				$zip->close();
				wp_delete_file( $zip_file_path );
				wp_send_json_error( 'Failed to extract new app version.' );
			}

			$zip->close();
			wp_delete_file( $zip_file_path );

			// Update version in installed apps array
			foreach ( $apps as &$installed_app ) {
				if ( isset( $installed_app['app_slug'] ) && $installed_app['app_slug'] === $app_slug ) {
					$installed_app['version'] = $new_version;
					break;
				}
			}

			HelperFunctions::update_global_data_using_key( 'kirki_installed_apps', $apps );

			// If everything succeeded, remove the backup
			HelperFunctions::delete_directory( $backup_folder );

			wp_send_json_success( 'App installed successfully!' );
		} catch ( \Throwable $th ) {
			global $wp_filesystem;
			if ( empty( $wp_filesystem ) ) {
				require_once ABSPATH . 'wp-admin/includes/file.php';
				WP_Filesystem();
			}

			// If backup exists, restore it
			if ( isset( $backup_folder ) && isset( $app_folder ) && $wp_filesystem->exists( $backup_folder ) ) {
				if ( $wp_filesystem->exists( $app_folder ) ) {
					HelperFunctions::delete_directory( $app_folder );
				}
				$wp_filesystem->move( $backup_folder, $app_folder );
			}

			// Clean up zip file if it exists
			if ( isset( $zip_file_path ) && file_exists( $zip_file_path ) ) {
				wp_delete_file( $zip_file_path );
			}

			wp_send_json_error( 'An error occurred during the app update: ' . $th->getMessage() );
		}

		die();
	}
}