<?php

declare(strict_types=1);

namespace Domovoy\Controllers;

use Domovoy\Models\Device;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class DeviceController
{
    private \Domovoy\Services\Inventory\DeviceService $deviceService;
    private \Domovoy\Repositories\DiscoveredHostRepository $discoveredHostRepository;
    private \Domovoy\Repositories\CredentialRepository $credentialRepository;

    public function __construct(
        \Domovoy\Services\Inventory\DeviceService $deviceService,
        \Domovoy\Repositories\DiscoveredHostRepository $discoveredHostRepository,
        \Domovoy\Repositories\CredentialRepository $credentialRepository
    ) {
        $this->deviceService = $deviceService;
        $this->discoveredHostRepository = $discoveredHostRepository;
        $this->credentialRepository = $credentialRepository;
    }

    public function index(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        ob_start();
        $username = $_SESSION['username'] ?? 'User';
        $devices = $this->deviceService->getAllDevices();
        require dirname(__DIR__, 2) . '/templates/devices/index.php';
        $body = ob_get_clean();
        $response->getBody()->write($body);
        return $response;
    }

    public function createForm(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        ob_start();
        $username = $_SESSION['username'] ?? 'User';
        $device = new Device();
        $types = Device::$types;
        $importances = Device::$importances;
        require dirname(__DIR__, 2) . '/templates/devices/form.php';
        $body = ob_get_clean();
        $response->getBody()->write($body);
        return $response;
    }

    public function create(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        $data = $request->getParsedBody();

        $device = new Device();
        $device->name = trim($data['name'] ?? '');
        $device->type = $data['type'] ?? 'unknown';
        $device->description = trim($data['description'] ?? '') ?: null;
        $device->primaryIp = trim($data['primary_ip'] ?? '') ?: null;
        $device->macAddress = trim($data['mac_address'] ?? '') ?: null;
        $device->hostname = trim($data['hostname'] ?? '') ?: null;
        $device->vendor = trim($data['vendor'] ?? '') ?: null;
        $device->osName = trim($data['os_name'] ?? '') ?: null;
        $device->osVersion = trim($data['os_version'] ?? '') ?: null;
        $device->location = trim($data['location'] ?? '') ?: null;
        $device->importance = $data['importance'] ?? 'normal';

        $this->deviceService->updateDevice($device);

        return $response
            ->withHeader('Location', '/devices')
            ->withStatus(302);
    }

    public function show(ServerRequestInterface $request, ResponseInterface $response, array $args): ResponseInterface
    {
        $id = (int)$args['id'];
        $device = $this->deviceService->getDevice($id);

        if ($device === null) {
            return $response->withStatus(404)->write('Device not found');
        }

        ob_start();
        $username = $_SESSION['username'] ?? 'User';
        $types = Device::$types;
        $importances = Device::$importances;
        $credentials = $this->credentialRepository->findByDevice($id);
        require dirname(__DIR__, 2) . '/templates/devices/show.php';
        $body = ob_get_clean();
        $response->getBody()->write($body);
        return $response;
    }

    public function editForm(ServerRequestInterface $request, ResponseInterface $response, array $args): ResponseInterface
    {
        $id = (int)$args['id'];
        $device = $this->deviceService->getDevice($id);

        if ($device === null) {
            return $response->withStatus(404)->write('Device not found');
        }

        ob_start();
        $username = $_SESSION['username'] ?? 'User';
        $types = Device::$types;
        $importances = Device::$importances;
        require dirname(__DIR__, 2) . '/templates/devices/form.php';
        $body = ob_get_clean();
        $response->getBody()->write($body);
        return $response;
    }

    public function update(ServerRequestInterface $request, ResponseInterface $response, array $args): ResponseInterface
    {
        $id = (int)$args['id'];
        $device = $this->deviceService->getDevice($id);

        if ($device === null) {
            return $response->withStatus(404)->write('Device not found');
        }

        $data = $request->getParsedBody();
        $device->name = trim($data['name'] ?? '');
        $device->type = $data['type'] ?? 'unknown';
        $device->description = trim($data['description'] ?? '') ?: null;
        $device->primaryIp = trim($data['primary_ip'] ?? '') ?: null;
        $device->macAddress = trim($data['mac_address'] ?? '') ?: null;
        $device->hostname = trim($data['hostname'] ?? '') ?: null;
        $device->vendor = trim($data['vendor'] ?? '') ?: null;
        $device->osName = trim($data['os_name'] ?? '') ?: null;
        $device->osVersion = trim($data['os_version'] ?? '') ?: null;
        $device->location = trim($data['location'] ?? '') ?: null;
        $device->importance = $data['importance'] ?? 'normal';
        $device->status = $data['status'] ?? 'active';

        $this->deviceService->updateDevice($device);

        return $response
            ->withHeader('Location', '/devices/' . $device->id)
            ->withStatus(302);
    }

    public function delete(ServerRequestInterface $request, ResponseInterface $response, array $args): ResponseInterface
    {
        $id = (int)$args['id'];
        $this->deviceService->deleteDevice($id);

        return $response
            ->withHeader('Location', '/devices')
            ->withStatus(302);
    }

    public function createFromHost(ServerRequestInterface $request, ResponseInterface $response): ResponseInterface
    {
        $data = $request->getParsedBody();
        $hostId = $data['host_id'] ?? null;
        $name = trim($data['name'] ?? '');

        if ($hostId === null || $name === '') {
            return $response->withStatus(400)->write('Host ID and name required');
        }

        $host = $this->discoveredHostRepository->findById((int)$hostId);
        if ($host === null) {
            return $response->withStatus(404)->write('Host not found');
        }

        $device = $this->deviceService->createFromDiscoveredHost(
            $name,
            $host->ipAddress,
            $host->macAddress,
            $host->hostname,
            $host->vendor
        );

        // Mark host as accepted
        $host->status = 'accepted';
        $host->matchedDeviceId = (string)$device->id;
        $this->discoveredHostRepository->save($host);

        return $response
            ->withHeader('Location', '/devices/' . $device->id)
            ->withStatus(302);
    }
}