<?php

declare(strict_types=1);

namespace Monitor\Api\Controller;

use InvalidArgumentException;
use Monitor\Api\Http\Request;
use Monitor\Api\Http\Response;
use Monitor\Api\Repository\AgentRepository;

final class AgentController
{
    public function __construct(private readonly AgentRepository $agents)
    {
    }

    public function index(Request $request): Response
    {
        return Response::json(['agents' => $this->agents->all()]);
    }

    public function register(Request $request): Response
    {
        $displayName = trim((string) ($request->body['display_name'] ?? ''));
        $role = (string) ($request->body['role'] ?? '');

        if ($displayName === '') {
            return Response::error('Feld "display_name" ist erforderlich.', 422);
        }

        try {
            $result = $this->agents->register($displayName, $role);
        } catch (InvalidArgumentException $e) {
            return Response::error($e->getMessage(), 422);
        }

        // Der Klartext-API-Key wird nur bei der Registrierung einmalig zurueckgegeben.
        return Response::json(['agent' => $result['agent'], 'api_key' => $result['api_key']], 201);
    }

    /**
     * @param array<string, string> $params
     * @param array<string, mixed> $authenticatedAgent
     */
    public function activity(Request $request, array $params, array $authenticatedAgent): Response
    {
        if ((int) $params['id'] !== (int) $authenticatedAgent['id']) {
            return Response::error('Ein Agent darf nur seine eigene Aktivitaet melden.', 403);
        }

        $state = (string) ($request->body['state'] ?? '');
        if ($state === '') {
            return Response::error('Feld "state" ist erforderlich.', 422);
        }

        $currentTicketId = isset($request->body['current_ticket']) ? (int) $request->body['current_ticket'] : null;

        $agent = $this->agents->updateActivity((int) $params['id'], $state, $currentTicketId);

        return Response::json(['agent' => $agent]);
    }
}