<?php

declare(strict_types=1);

namespace Mod\Names\Actions;

use Illuminate\Validation\ValidationException;
use Mod\Chain\Services\DaemonRpc;
use Mod\Names\Models\NameActivity;
use Mod\Names\Models\NameClaim;

/**
 * Submit a pre-registration name claim.
 *
 *   $claim = SubmitClaim::run(['name' => 'mybrand', 'email' => 'me@example.com']);
 *   echo $claim->claim_id;
 */
class SubmitClaim
{
    public function __construct(
        private readonly DaemonRpc $rpc,
    ) {}

    public function handle(array $data): NameClaim
    {
        $name = strtolower(trim($data['name'] ?? ''));
        $email = trim($data['email'] ?? '');

        $this->validate($name, $email);

        $claim = NameClaim::create([
            'name' => $name,
            'email' => $email,
        ]);

        NameActivity::log($name, 'claimed', [
            'claim_id' => $claim->claim_id,
            'email' => $email,
        ], request()?->ip());

        return $claim;
    }

    private function validate(string $name, string $email): void
    {
        if (! preg_match('/^[a-z0-9][a-z0-9.\-]{0,254}$/', $name)) {
            throw ValidationException::withMessages([
                'name' => 'Invalid name. Use lowercase alphanumeric characters.',
            ]);
        }

        if (strlen($name) < 6) {
            throw ValidationException::withMessages([
                'name' => 'Name must be at least 6 characters.',
            ]);
        }

        if (empty($email) || ! filter_var($email, FILTER_VALIDATE_EMAIL)) {
            throw ValidationException::withMessages([
                'email' => 'Valid email required for claim notification.',
            ]);
        }

        // Not already registered on chain
        if ($this->rpc->getAliasByName($name) !== null) {
            throw ValidationException::withMessages([
                'name' => 'Name already registered.',
            ]);
        }

        // Not already claimed
        if (NameClaim::where('name', $name)->exists()) {
            throw ValidationException::withMessages([
                'name' => 'Name already claimed. Awaiting approval.',
            ]);
        }
    }

    public static function run(array $data): NameClaim
    {
        return app(static::class)->handle($data);
    }
}