led_font_status cairo_toy_font_face_create cairo_matrix_transform_point cairo_matrix_init_scale cairo_scaled_font_destroy cairo_pattern_reference cairo_matrix_init_rotate cairo_matrix_transform_distance cairo_surface_copy_page cairo_surface_status cairo_surface_show_page cairo_scaled_font_extents cairo_scaled_font_glyph_extents cairo_glyph_free cairo_text_cluster_free cairo_text_cluster_allocate cairo_glyph_allocate rand pixman_image_composite32 pixman_image_unref pixman_blt pixman_image_get_data pixman_glyph_cache_freeze pixman_glyph_cache_lookup pixman_glyph_cache_insert pixman_glyph_cache_thaw pixman_composite_glyphs_no_mask pixman_glyph_cache_create pixman_glyph_get_mask_format pixman_composite_glyphs pixman_fill pixman_image_set_clip_region32 pixman_image_create_bits pixman_image_set_destroy_function pixman_image_get_stride pixman_rasterize_trapezoid pixman_add_triangles pixman_glyph_cache_destroy pixman_glyph_cache_remove pixman_image_set_transform hypot pixman_image_set_filter pixman_image_set_repeat pixman_image_set_component_alpha pixman_image_ref cairo_matrix_translate cairo_matrix_scale pixman_image_create_solid_fill pixman_image_create_radial_gradient pixman_image_create_linear_gradient pixman_image_set_dither pixman_image_get_width pixman_image_get_height pixman_image_get_depth pixman_format_supported_destination cairo_format_stride_for_width cairo_image_surface_create_for_data cairo_image_surface_get_data cairo_image_surface_get_format cairo_image_surface_get_width cairo_image_surface_get_height cairo_image_surface_get_stride pixman_region32_rectangles cairo_matrix_init cairo_matrix_rotate pixman_transform_point_3d frexp cairo_status_to_string localeconv strtod_l newlocale freelocale fopen64 __snprintf_chk memmove fflush ferror fclose __errno_location cairo_path_destroy cairo_pattern_create_rgb cairo_pattern_create_linear cairo_pattern_create_radial cairo_pattern_create_mesh cairo_pattern_get_type cairo_pattern_status cairo_pattern_get_reference_count cairo_pattern_get_user_data cairo_pattern_set_user_data cairo_mesh_pattern_begin_patch cairo_mesh_pattern_move_to cairo_mesh_pattern_curve_to cairo_mesh_pattern_line_to cairo_mesh_pattern_end_patch cairo_mesh_pattern_set_control_point cairo_mesh_pattern_set_corner_color_rgba cairo_mesh_pattern_set_corner_color_rgb cairo_pattern_add_color_stop_rgba cairo_pattern_add_color_stop_rgb cairo_pattern_get_matrix cairo_pattern_set_filter cairo_pattern_get_filter cairo_pattern_get_dither cairo_pattern_set_dither cairo_pattern_set_extend cairo_pattern_get_extend cairo_pattern_get_rgba cairo_pattern_get_surface cairo_pattern_get_color_stop_rgba cairo_pattern_get_color_stop_count cairo_pattern_get_linear_points cairo_pattern_get_radial_circles cairo_mesh_pattern_get_patch_count cairo_mesh_pattern_get_path cairo_mesh_pattern_get_corner_color_rgba cairo_mesh_pattern_get_control_point acos cairo_pattern_create_raster_source cairo_raster_source_pattern_set_callback_data cairo_raster_source_pattern_get_callback_data cairo_raster_source_pattern_set_acquire cairo_raster_source_pattern_get_acquire cairo_raster_source_pattern_set_snapshot cairo_raster_source_pattern_get_snapshot cairo_raster_source_pattern_set_copy cairo_raster_source_pattern_get_copy cairo_raster_source_pattern_set_finish cairo_raster_source_pattern_get_finish cairo_surface_flush cairo_recording_surface_ink_extents cairo_recording_surface_get_extents __sprintf_chk pixman_region32_init pixman_region32_init_rect pixman_region32_fini cairo_region_create pixman_region32_init_rects cairo_region_create_rectangle cairo_region_copy pixman_region32_copy pixman_region32_n_rects cairo_region_get_extents pixman_region32_extents cairo_region_status cairo_region_subtract pixman_region32_subtract cairo_region_subtract_rectangle cairo_region_intersect pixman_region32_intersect cairo_region_intersect_rectangle pixman_region32_union cairo_region_xor cairo_region_xor_rectangle cairo_region_is_empty pixman_region32_not_empty cairo_region_translate pixman_region32_translate pixman_region32_contains_rectangle cairo_region_contains_poinquest_filesystem_credentials' ) ) {
			require_once ABSPATH . 'wp-admin/includes/file.php';
		}

		// Set current screen for AJAX context (non-silent mode)
		if ( ! $silent ) {
			set_current_screen();
		}

		$method = '';
		$url    = esc_url_raw( admin_url( 'admin.php?page=imagely-settings' ) );

		ob_start();
		$creds = request_filesystem_credentials( $url, $method, false, false, null );
		if ( false === $creds ) {
			$form = ob_get_clean();
			return new \WP_Error(
				'filesystem_credentials_required',
				'Filesystem credentials required',
				[ 'form' => $form ]
			);
		}

		if ( ! WP_Filesystem( $creds ) ) {
			ob_start();
			request_filesystem_credentials( $url, $method, true, false, null );
			$form = ob_get_clean();
			return new \WP_Error(
				'filesystem_not_accessible',
				'Filesystem not accessible',
				[ 'form' => $form ]
			);
		}
		ob_end_clean();

		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';

		// Check if Installer_Skin class exists
		if ( ! class_exists( 'Imagely\NGG\Util\Installer_Skin' ) ) {
			return new \WP_Error(
				'installer_skin_missing',
				'Installer_Skin class not found'
			);
		}

		$skin      = new \Imagely\NGG\Util\Installer_Skin();
		$installer = new \Plugin_Upgrader( $skin );
		$result    = $installer->install( $download_url );

		wp_cache_flush();

		if ( is_wp_error( $result ) ) {
			return $result;
		}

		if ( $installer->plugin_info() ) {
			$plugin_basename = $installer->plugin_info();

			$activated = false;

			// Try to activate the plugin if requested
			if ( $activate ) {
				$activation_result = activate_plugin( $plugin_basename, false, false, true );
				$activated         = ! is_wp_error( $activation_result );
			}

			return [
				'basename'  => $plugin_basename,
				'activated' => $activated,
			];
		}

		return new \WP_Error(
			'install_failed',
			'Failed to install plugin'
		);
	}

	/**
	 * Get the current license type/level installed
	 *
	 * @return string
	 */
	public static function get_license_type() {
		if ( defined( 'NGG_PRO_PLUGIN_BASENAME' ) ) {
			return 'pro';
		} elseif ( defined( 'NGG_PLUS_PLUGIN_BASENAME' ) ) {
			return 'plus';
		} elseif ( defined( 'NGG_STARTER_PLUGIN_BASENAME' ) ) {
			return 'starter';
		}

		return 'lite';
	}

	/**
	 * Check if a specific license level is already installed (active or inactive)
	 *
	 * @param string $product The product level to check (pro, plus, or starter).
	 * @return bool True if installed (active or not), false otherwise.
	 */
	public static function is_product_installed( $product ) {
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		$plugin_basenames = [
			'pro'     => 'nextgen-gallery-pro/nggallery-pro.php',
			'plus'    => 'nextgen-gallery-plus/nggallery-plus.php',
			'starter' => 'nextgen-gallery-starter/nggallery-starter.php',
		];

		if ( ! isset( $plugin_basenames[ $product ] ) ) {
			return false;
		}

		$all_plugins = get_plugins();
		return isset( $all_plugins[ $plugin_basenames[ $product ] ] );
	}

	/**
	 * Get error message for license errors
	 *
	 * @param string|null $error_code The error code.
	 * @return string
	 */
	public static function get_error_message( $error_code ) {
		if ( ! isset( $error_code ) ) {
			return 'Something went wrong, please try again later.';
		}

		$messages = [
			'empty_site_url'             => __( 'The site URL is missing. Please provide a valid URL.', 'nextgen-gallery' ),
			'license_not_found'          => __( 'The license key was not found. Please verify and try again.', 'nextgen-gallery' ),
			'license_status_expired'     => __( 'The license key has expired. Please renew your license.', 'nextgen-gallery' ),
			'license_expired'            => __( 'The license key has expired. Please renew your license.', 'nextgen-gallery' ),
			'license_status_disabled'    => __( 'The license key has not been activated yet. Please contact support.', 'nextgen-gallery' ),
			'license_disabled'           => __( 'The license key has not been activated yet. Please contact support.', 'nextgen-gallery' ),
			'license_status_revoked'     => __( 'The license key has been revoked. Please contact support.', 'nextgen-gallery' ),
			'license_revoked'            => __( 'The license key has been revoked. Please contact support.', 'nextgen-gallery' ),
			'license_limit_installations' => __( 'The license key has reached the maximum number of installations.', 'nextgen-gallery' ),
		];

		return $messages[ $error_code ] ?? __( 'An unknown error occurred. Please try again.', 'nextgen-gallery' );
	}
}