<?php

declare(strict_types=1);

namespace Core\Mod\Agentic\Actions\Fleet;

use Core\Actions\Action;
use Core\Mod\Agentic\Models\FleetNode;
use Core\Mod\Agentic\Models\FleetTask;

class GetFleetStats
{
    use Action;

    /**
     * @return array<string, int>
     */
    public function handle(int $workspaceId): array
    {
        $nodes = FleetNode::query()->where('workspace_id', $workspaceId);
        $tasks = FleetTask::query()->where('workspace_id', $workspaceId);
        $taskSamples = (clone $tasks)
            ->whereNotNull('started_at')
            ->get();

        return [
            'nodes_online' => (clone $nodes)->online()->count(),
            'tasks_today' => (clone $tasks)->whereDate('created_at', today())->count(),
            'tasks_week' => (clone $tasks)->where('created_at', '>=', now()->subDays(7))->count(),
            'repos_touched' => (clone $tasks)->distinct('repo')->count('repo'),
            'findings_total' => (clone $tasks)->get()->sum(static fn (FleetTask $task) => count($task->findings ?? [])),
            'compute_hours' => (int) round(
                $taskSamples->sum(fn (FleetTask $task) => self::taskDurationSeconds($task)) / 3600,
            ),
        ];
    }

    private static function taskDurationSeconds(FleetTask $fleetTask): int
    {
        if ($fleetTask->started_at === null) {
            return 0;
        }

        return max(
            0,
            (int) $fleetTask->started_at->diffInSeconds($fleetTask->completed_at ?? now()),
        );
    }
}