<?php

namespace MintyPHP\Repository\Auth;

use MintyPHP\DB;

/** Stores email verification codes with attempt counters, expiry, and completion status. */
class EmailVerificationRepository implements EmailVerificationRepositoryInterface
{
    public function create(int $userId, string $codeHash, string $expiresAt): ?int
    {
        $id = DB::insert(
            'insert into email_verifications (user_id, code_hash, expires_at, attempts, used_at, created) values (?,?,?,?,NULL,NOW())',
            (string) $userId,
            $codeHash,
            $expiresAt,
            0
        );
        return $id ? (int) $id : null;
    }

    public function invalidateForUser(int $userId): bool
    {
        $result = DB::update(
            'update email_verifications set used_at = NOW() where user_id = ? and used_at is null',
            (string) $userId
        );
        return $result !== false;
    }

    public function findActiveByUserId(int $userId): ?array
    {
        $row = DB::selectOne(
            'select id, user_id, code_hash, expires_at, attempts, used_at from email_verifications where user_id = ? and used_at is null and expires_at > UTC_TIMESTAMP() order by id desc limit 1',
            (string) $userId
        );
        if (!$row || !isset($row['email_verifications'])) {
            return null;
        }
        return $row['email_verifications'];
    }

    public function findById(int $id): ?array
    {
        $row = DB::selectOne(
            'select id, user_id, code_hash, expires_at, attempts, used_at from email_verifications where id = ? limit 1',
            (string) $id
        );
        if (!$row || !isset($row['email_verifications'])) {
            return null;
        }
        return $row['email_verifications'];
    }

    public function incrementAttempts(int $id): bool
    {
        $result = DB::update(
            'update email_verifications set attempts = attempts + 1 where id = ?',
            (string) $id
        );
        return $result !== false;
    }

    public function markUsed(int $id): bool
    {
        $result = DB::update(
            'update email_verifications set used_at = NOW() where id = ?',
            (string) $id
        );
        return $result !== false;
    }
}