<?php

namespace App\Command;

use App\Application;
use App\Model\Fan;
use App\Service\SystemCtl;
use App\Service\Utils;
use App\Subroutines\Fan\EditFan;
use App\Subroutines\InitializeConfig;
use GetOpt\GetOpt;
use Hugga\Console;
use Hugga\Input\Question\Choice;
use Hugga\Input\Question\Confirmation;

class Config extends AbstractCommand
{
    protected $name = 'config';

    protected $description = 'Generate or update fan configuration';

    public function __construct(Application $app, Console $console)
    {
        parent::__construct($app, $console);
    }

    public function handle(GetOpt $getOpt): int
    {
        if (posix_getuid() !== 0) {
            $this->warn('This programm has to run as root');
            return 1;
        }

        if ($this->getOption('quiet')) {
            $this->warn('This command requires user interaction');
            return 1;
        }

        $ranBefore = SystemCtl::isActive('fan-ctrl');
        if (!SystemCtl::stop('fan-ctrl')) {
            $this->warn('fan-ctrl could not be stopped');
            return 1;
        }

        $fanConfig = $this->app->fanConfig;
        try {
            $fanConfig->readConfig();
        } catch (\Throwable $e) {
            $this->error('Unable to read config: ' . $e->getMessage());
        }
        if (!$fanConfig->hasFans()) {
            if ($this->app->get(InitializeConfig::class)->main() > 0) {
                return 1;
            }
        }

        $actions = new Choice([
            'edit a fan',
            'add a sensor',
            'edit a sensor',
            'add a rule',
            'edit a rule',
            'save and exit',
            'exit without saving',
        ], 'What next?', 'save and exit');
        do {
            $fanConfig->display($this->console);
            $answer = $this->ask($actions);
            switch ($answer) {
                case 'edit a fan':
                    if ($fan = $this->selectFan($fanConfig->getFans())) {
                        $this->app->get(EditFan::class)->main($fan);
                    }
                    break;

                case 'exit without saving':
                    break 2;

                case 'save and exit':
                    $fanConfig->save();
                    break 2;

                default:
                    $this->warn('not implemented');
                    break;
            }
        } while (true);

        if ($ranBefore) {
            SystemCtl::start('fan-ctrl');
        }
        return 0;
    }

    protected function selectFan(array $fans): ?Fan
    {
        $choices = array_keys($fans);
        $choices[] = 'cancel';
        $question = new Choice($choices);
        $question->returnKey();
        $answer = $this->ask($question);
        return $choices[$answer] === 'cancel' ? null : $fans[$choices[$answer]];
    }
}