<?php

declare(strict_types=1);

namespace App\Console\Commands;

use App\Support\Health\Finding;
use App\Support\Health\HealthReport;
use App\Support\Health\Severity;
use Illuminate\Console\Command;
use Illuminate\Support\Collection;

/**
 * The same checks as the panel page, for a deploy script.
 *
 * Exits non-zero when something is wrong, so a release can refuse to finish
 * on a site that is already broken — or, with `--fail-on=error`, only on the
 * faults that a visitor would actually hit.
 */
class SiteCheckCommand extends Command
{
    protected $signature = 'site:check
                            {--fail-on=warning : Exit non-zero from this severity up (error|warning|never)}
                            {--json : Machine-readable output}';

    protected $description = 'Check the public site for missing translations, broken URLs, broken images and other faults';

    public function handle(HealthReport $report): int
    {
        // Every check: a deploy is not a person, so there is nobody here to
        // hide a result from.
        $findings = $report->runAll();

        if ($this->option('json')) {
            $this->line((string) json_encode($findings->map(fn (Finding $f) => [
                'key' => $f->key,
                'severity' => $f->severity->value,
                'count' => $f->count,
                'samples' => $f->samples,
            ])->all(), JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE));

            return $this->exitCode($findings);
        }

        foreach ($findings as $finding) {
            $this->components->twoColumnDetail(
                $finding->title(),
                $this->badge($finding),
            );

            foreach ($finding->samples as $sample) {
                $this->line("    <fg=gray>· {$sample}</>");
            }
        }

        $this->newLine();

        $problems = $findings->filter(fn (Finding $f) => $f->severity->isProblem());

        if ($problems->isEmpty()) {
            $this->components->info(__('health.all_clear'));
        } else {
            $this->components->warn(
                trans_choice('health.problem_summary', $problems->count(), ['count' => $problems->count()])
            );
        }

        return $this->exitCode($findings);
    }

    /**
     * @param  Collection<int, Finding>  $findings
     */
    protected function exitCode($findings): int
    {
        $threshold = match ((string) $this->option('fail-on')) {
            'error' => Severity::Error,
            'never' => null,
            default => Severity::Warning,
        };

        if ($threshold === null) {
            return self::SUCCESS;
        }

        $failing = $findings->contains(
            fn (Finding $f) => $f->severity->weight() <= $threshold->weight() && $f->severity->isProblem()
        );

        return $failing ? self::FAILURE : self::SUCCESS;
    }

    protected function badge(Finding $finding): string
    {
        return match ($finding->severity) {
            Severity::Ok => '<fg=green>ok</>',
            Severity::Warning => "<fg=yellow>{$finding->count}</>",
            Severity::Error => "<fg=red>{$finding->count}</>",
        };
    }
}