<?php

namespace MintyPHP\Repository\Auth;

use MintyPHP\DB;

class RememberTokenRepository implements RememberTokenRepositoryInterface
{
    private function unwrapList($rows): array
    {
        if (!is_array($rows)) {
            return [];
        }
        $list = [];
        foreach ($rows as $row) {
            $data = $row['user_remember_tokens'] ?? $row;
            if (is_array($data)) {
                $list[] = $data;
            }
        }
        return $list;
    }

    public function create(int $userId, string $selector, string $tokenHash, string $expiresAt): ?int
    {
        $id = DB::insert(
            'insert into user_remember_tokens (user_id, selector, token_hash, expires_at, created) values (?,?,?,?,NOW())',
            (string) $userId,
            $selector,
            $tokenHash,
            $expiresAt
        );
        return $id ? (int) $id : null;
    }

    public function findBySelector(string $selector): ?array
    {
        $row = DB::selectOne(
            'select id, user_id, selector, token_hash, expires_at, expired_by_admin_at, last_used from user_remember_tokens where selector = ? limit 1',
            $selector
        );
        if (!$row || !isset($row['user_remember_tokens'])) {
            return null;
        }
        return $row['user_remember_tokens'];
    }

    public function updateToken(int $id, string $tokenHash, string $expiresAt): bool
    {
        $result = DB::update(
            'update user_remember_tokens set token_hash = ?, expires_at = ?, expired_by_admin_at = NULL, last_used = NOW() where id = ?',
            $tokenHash,
            $expiresAt,
            (string) $id
        );
        return $result !== false;
    }

    public function expireAllByAdmin(): int
    {
        $result = DB::update(
            'update user_remember_tokens set expires_at = NOW(), expired_by_admin_at = NOW() where expires_at > NOW()'
        );
        return $result !== false ? (int) $result : 0;
    }

    public function deleteById(int $id): bool
    {
        $result = DB::delete('delete from user_remember_tokens where id = ?', (string) $id);
        return $result !== false;
    }

    public function deleteByUserId(int $userId): bool
    {
        $result = DB::delete('delete from user_remember_tokens where user_id = ?', (string) $userId);
        return $result !== false;
    }

    public function listByUserId(int $userId, int $limit = 20): array
    {
        if ($userId <= 0) {
            return [];
        }
        if ($limit < 1) {
            $limit = 20;
        } elseif ($limit > 100) {
            $limit = 100;
        }
        $rows = DB::select(
            'select id, user_id, selector, expires_at, expired_by_admin_at, last_used, created from user_remember_tokens where user_id = ? order by id desc limit ?',
            (string) $userId,
            (string) $limit
        );
        return $this->unwrapList($rows);
    }

    public function countActive(): int
    {
        $count = DB::selectValue('select count(*) from user_remember_tokens where expires_at > NOW()');
        return $count ? (int) $count : 0;
    }
}
