<?php
/**
 * wp adminkeep view.
 *
 * @package Adminkeep
 */

namespace Adminkeep\Cli;

use Adminkeep\Admin\SettingsPage;

defined( 'ABSPATH' ) || exit;

/**
 * Read and set how the settings screen looks for one user.
 *
 * The one view preference is "Hide unused features", the switch on the
 * settings screen that hides switched-off features from its nav. It
 * belongs to a user, not the site, so pick the user with WP-CLI's
 * global --user flag. Nothing about the site changes.
 */
class ViewCommand {

	/**
	 * Terminal.
	 *
	 * @var Io
	 */
	private $io;

	/**
	 * Constructor.
	 *
	 * @param Io $io Terminal.
	 */
	public function __construct( Io $io ) {
		$this->io = $io;
	}

	/**
	 * Prints hide-unused or show-all for the user, and nothing else.
	 *
	 * ## EXAMPLES
	 *
	 *     $ wp adminkeep view get --user=admin
	 *     show-all
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Flags.
	 * @return void
	 */
	public function get( $args, $assoc_args ) {
		$user_id = $this->user_id();

		$this->io->line( SettingsPage::hides_unused( $user_id ) ? 'hide-unused' : 'show-all' );
	}

	/**
	 * Hides switched-off features from the settings screen's nav.
	 *
	 * The same as switching "Hide unused features" on in the screen.
	 *
	 * ## EXAMPLES
	 *
	 *     $ wp adminkeep view hide-unused --user=admin
	 *
	 * @subcommand hide-unused
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Flags.
	 * @return void
	 */
	public function hide_unused( $args, $assoc_args ) {
		$user_id = $this->user_id();

		SettingsPage::set_hides_unused( $user_id, true );
		$this->io->success( sprintf( 'Unused features are hidden for user %d.', $user_id ) );
	}

	/**
	 * Shows every feature in the settings screen's nav. The default.
	 *
	 * ## EXAMPLES
	 *
	 *     $ wp adminkeep view show-all --user=admin
	 *
	 * @subcommand show-all
	 *
	 * @param array $args       Positional arguments.
	 * @param array $assoc_args Flags.
	 * @return void
	 */
	public function show_all( $args, $assoc_args ) {
		$user_id = $this->user_id();

		SettingsPage::set_hides_unused( $user_id, false );
		$this->io->success( sprintf( 'Every feature is shown for user %d.', $user_id ) );
	}

	/**
	 * The user the command is for: the one WP-CLI's global --user picked. A command cannot
	 * declare its own --user; WP-CLI reserves the name.
	 *
	 * @return int
	 */
	private function user_id() {
		$user_id = get_current_user_id();

		if ( ! $user_id ) {
			$this->io->error( 'The view is set per user. Pick one with --user=<id|login|email>.' );
		}

		// Someone who cannot open the settings screen has no view of it to set.
		if ( ! current_user_can( SettingsPage::CAPABILITY ) ) {
			$this->io->error( sprintf( 'User %d cannot open the Adminkeep settings screen (it needs %s).', $user_id, SettingsPage::CAPABILITY ) );
		}

		return $user_id;
	}
}