<?php

declare(strict_types=1);

namespace App\Mcp\Tool\TimeEntry;

use App\Repository\TimeEntryRepository;
use DateTimeImmutable;
use Mcp\Capability\Attribute\McpTool;

#[McpTool(name: 'list-time-entries', description: 'List time entries with optional filters. Duration is computed in minutes and null for active timers.')]
class ListTimeEntriesTool
{
    public function __construct(
        private readonly TimeEntryRepository $timeEntryRepository,
    ) {}

    public function __invoke(
        ?int $userId = null,
        ?int $projectId = null,
        ?int $taskId = null,
        ?string $startDate = null,
        ?string $endDate = null,
        int $limit = 100,
    ): string {
        $limit = min($limit, 200);

        $qb = $this->timeEntryRepository->createQueryBuilder('te')
            ->leftJoin('te.user', 'u')->addSelect('u')
            ->leftJoin('te.project', 'p')->addSelect('p')
            ->leftJoin('te.task', 't')->addSelect('t')
            ->leftJoin('te.tags', 'tg')->addSelect('tg')
            ->orderBy('te.startedAt', 'DESC')
            ->setMaxResults($limit)
        ;

        if (null !== $userId) {
            $qb->andWhere('u.id = :userId')->setParameter('userId', $userId);
        }
        if (null !== $projectId) {
            $qb->andWhere('p.id = :projectId')->setParameter('projectId', $projectId);
        }
        if (null !== $taskId) {
            $qb->andWhere('t.id = :taskId')->setParameter('taskId', $taskId);
        }
        if (null !== $startDate) {
            $qb->andWhere('te.startedAt >= :startDate')
                ->setParameter('startDate', new DateTimeImmutable($startDate.' 00:00:00'))
            ;
        }
        if (null !== $endDate) {
            $qb->andWhere('te.startedAt <= :endDate')
                ->setParameter('endDate', new DateTimeImmutable($endDate.' 23:59:59'))
            ;
        }

        $entries = $qb->getQuery()->getResult();

        return json_encode(array_map(fn ($entry) => [
            'id'          => $entry->getId(),
            'title'       => $entry->getTitle(),
            'description' => $entry->getDescription(),
            'startedAt'   => $entry->getStartedAt()?->format('c'),
            'stoppedAt'   => $entry->getStoppedAt()?->format('c'),
            'duration'    => $entry->getStoppedAt() && $entry->getStartedAt()
                ? (int) round(($entry->getStoppedAt()->getTimestamp() - $entry->getStartedAt()->getTimestamp()) / 60)
                : null,
            'user' => [
                'id'       => $entry->getUser()->getId(),
                'username' => $entry->getUser()->getUsername(),
            ],
            'project' => $entry->getProject() ? [
                'id'   => $entry->getProject()->getId(),
                'code' => $entry->getProject()->getCode(),
                'name' => $entry->getProject()->getName(),
            ] : null,
            'task' => $entry->getTask() ? [
                'id'     => $entry->getTask()->getId(),
                'number' => $entry->getTask()->getNumber(),
                'title'  => $entry->getTask()->getTitle(),
            ] : null,
            'tags' => $entry->getTags()->map(fn ($t) => [
                'id'    => $t->getId(),
                'label' => $t->getLabel(),
            ])->toArray(),
        ], $entries));
    }
}