<?php

declare(strict_types=1);

namespace App\Mcp\Tool;

use App\Repository\ComposantRepository;
use App\Repository\MachineRepository;
use App\Repository\PieceRepository;
use App\Repository\ProductRepository;
use App\Repository\SiteRepository;
use Doctrine\ORM\EntityManagerInterface;
use Mcp\Capability\Attribute\McpTool;
use Mcp\Schema\Content\TextContent;
use Mcp\Schema\Result\CallToolResult;

#[McpTool(
    name: 'get_dashboard_stats',
    description: 'Get global inventory statistics: count of machines, pieces, composants, products, sites, and unresolved comments. Takes no parameters.',
)]
class DashboardStatsTool
{
    public function __construct(
        private readonly MachineRepository $machines,
        private readonly PieceRepository $pieces,
        private readonly ComposantRepository $composants,
        private readonly ProductRepository $products,
        private readonly SiteRepository $sites,
        private readonly EntityManagerInterface $em,
    ) {}

    public function __invoke(): CallToolResult
    {
        $unresolvedComments = (int) $this->em->createQuery(
            "SELECT COUNT(c.id) FROM App\\Entity\\Comment c WHERE c.status = 'open'"
        )->getSingleScalarResult();

        return new CallToolResult(
            content: [new TextContent(
                text: json_encode([
                    'machines'           => $this->machines->count([]),
                    'pieces'             => $this->pieces->count([]),
                    'composants'         => $this->composants->count([]),
                    'products'           => $this->products->count([]),
                    'sites'              => $this->sites->count([]),
                    'unresolvedComments' => $unresolvedComments,
                ], JSON_THROW_ON_ERROR)
            )],
        );
    }
}