<?php

declare(strict_types=1);

namespace Domovoy\Repositories;

use Domovoy\Models\ScanJob;
use PDO;

class ScanJobRepository
{
    private PDO $pdo;

    public function __construct(PDO $pdo)
    {
        $this->pdo = $pdo;
    }

    public function findById(int $id): ?ScanJob
    {
        $stmt = $this->pdo->prepare('SELECT * FROM scan_jobs WHERE id = :id');
        $stmt->execute(['id' => $id]);
        $row = $stmt->fetch();
        return $row ? ScanJob::fromArray($row) : null;
    }

    public function findPending(): array
    {
        $stmt = $this->pdo->prepare('SELECT * FROM scan_jobs WHERE status = :status ORDER BY created_at ASC');
        $stmt->execute(['status' => 'pending']);
        $results = [];
        while ($row = $stmt->fetch()) {
            $results[] = ScanJob::fromArray($row);
        }
        return $results;
    }

    public function findRecent(int $limit = 10): array
    {
        $stmt = $this->pdo->prepare('SELECT * FROM scan_jobs ORDER BY created_at DESC LIMIT :limit');
        $stmt->bindValue('limit', $limit, PDO::PARAM_INT);
        $stmt->execute();
        $results = [];
        while ($row = $stmt->fetch()) {
            $results[] = ScanJob::fromArray($row);
        }
        return $results;
    }

    public function findActive(): array
    {
        $statuses = ['pending', 'running', 'paused'];
        $placeholders = implode(',', array_fill(0, count($statuses), '?'));
        $stmt = $this->pdo->prepare("SELECT * FROM scan_jobs WHERE status IN ({$placeholders}) ORDER BY created_at ASC");
        $stmt->execute($statuses);
        $results = [];
        while ($row = $stmt->fetch()) {
            $results[] = ScanJob::fromArray($row);
        }
        return $results;
    }

    public function findRunning(): array
    {
        $stmt = $this->pdo->prepare('SELECT * FROM scan_jobs WHERE status = :status ORDER BY started_at ASC');
        $stmt->execute(['status' => 'running']);
        $results = [];
        while ($row = $stmt->fetch()) {
            $results[] = ScanJob::fromArray($row);
        }
        return $results;
    }

    public function updateStatus(int $id, string $status): void
    {
        $finishedAt = in_array($status, ['done', 'failed', 'cancelled'], true)
            ? (new \DateTimeImmutable())->format('Y-m-d H:i:s')
            : null;

        $stmt = $this->pdo->prepare(
            'UPDATE scan_jobs SET status = :status, finished_at = :finished_at WHERE id = :id'
        );
        $stmt->execute([
            'id' => $id,
            'status' => $status,
            'finished_at' => $finishedAt,
        ]);
    }

    public function save(ScanJob $job): void
    {
        $now = (new \DateTimeImmutable())->format('Y-m-d H:i:s');
        if ($job->id === null) {
            $stmt = $this->pdo->prepare(
                'INSERT INTO scan_jobs (type, status, network_range_id, device_id, created_by, created_at)
                 VALUES (:type, :status, :network_range_id, :device_id, :created_by, :created_at)'
            );
            $stmt->execute([
                'type' => $job->type,
                'status' => $job->status,
                'network_range_id' => $job->networkRangeId,
                'device_id' => $job->deviceId,
                'created_by' => $job->createdBy,
                'created_at' => $now,
            ]);
            $job->id = (int)$this->pdo->lastInsertId();
        } else {
            $stmt = $this->pdo->prepare(
                'UPDATE scan_jobs SET type = :type, status = :status, network_range_id = :network_range_id,
                 device_id = :device_id, started_at = :started_at, finished_at = :finished_at,
                 error_message = :error_message, result_json = :result_json
                 WHERE id = :id'
            );
            $stmt->execute([
                'id' => $job->id,
                'type' => $job->type,
                'status' => $job->status,
                'network_range_id' => $job->networkRangeId,
                'device_id' => $job->deviceId,
                'started_at' => $job->startedAt?->format('Y-m-d H:i:s'),
                'finished_at' => $job->finishedAt?->format('Y-m-d H:i:s'),
                'error_message' => $job->errorMessage,
                'result_json' => $job->resultJson,
            ]);
        }
    }
}