<?php

declare(strict_types=1);

namespace App\Support\Inbox;

use App\Enums\ApplicationStatus;
use App\Mail\ApplicationReplyMail;
use App\Models\Application;
use App\Models\ApplicationReply;
use App\Models\User;
use Illuminate\Support\Facades\Mail;

/**
 * Answering a submission: sending it when this application can send mail,
 * handing it to the person's own mail program when it cannot, and keeping a
 * record either way.
 *
 * "Can send" is a mailer that actually delivers. `log` and `array` accept a
 * message and drop it, so with either of them a reply "sent from here" would
 * be one nobody received.
 */
final class Replier
{
    public static function canSendMail(): bool
    {
        return ! in_array(config('mail.default'), ['log', 'array', null], true);
    }

    public static function reply(Application $application, string $subject, string $body, User $by): ApplicationReply
    {
        $send = self::canSendMail();

        $reply = $application->replies()->create([
            'user_id' => $by->id,
            'user_name' => $by->name,
            'subject' => $subject,
            'body' => $body,
            'channel' => $send ? ApplicationReply::MAIL : ApplicationReply::MAILTO,
        ]);

        if ($send) {
            Mail::to($application->email, $application->name)->send(new ApplicationReplyMail($reply));
        }

        // Answered is at least contacted; a decision already taken stays.
        if ($application->status === ApplicationStatus::New) {
            $application->markAs(ApplicationStatus::Contacted, $by);
        }

        return $reply;
    }

    /**
     * The same answer, for the person's own mail program to send.
     */
    public static function mailto(Application $application, string $subject, string $body): string
    {
        return 'mailto:'.$application->email.'?subject='.rawurlencode($subject).'&body='.rawurlencode($body);
    }
}