construprogress/app/Livewire/ProjectCompanies.php

<?php

namespace App\Livewire;

use Livewire\Component;
use App\Models\Project;
use App\Models\Company;
use Illuminate\Support\Facades\Auth;

class ProjectCompanies extends Component
{
    public Project $project;
    public $assignedCompanies = [];
    public $allCompanies = [];
    public $selectedCompanyId = '';
    public $selectedRole = 'other';

    public function mount(Project $project)
    {
        $this->project = $project;
        $this->loadCompanies();
    }

    public function loadCompanies()
    {
        $this->assignedCompanies = $this->project->companies()->withPivot('role_in_project')->get();
        $assignedIds = $this->assignedCompanies->pluck('id')->toArray();
        $this->allCompanies = Company::whereNotIn('id', $assignedIds)->orderBy('name')->get();
    }

    public function assignCompany()
    {
        $user = Auth::user();
        if (!$user->can('assign users')) {
            session()->flash('error', 'No tienes permisos para asignar compañías.');
            return;
        }

        $this->validate([
            'selectedCompanyId' => 'required|exists:companies,id',
            'selectedRole' => 'required|in:owner,constructor,subcontractor,consultant,supplier,other',
        ]);

        $this->project->companies()->attach($this->selectedCompanyId, [
            'role_in_project' => $this->selectedRole
        ]);

        $this->reset(['selectedCompanyId', 'selectedRole']);
        $this->loadCompanies();
        $this->dispatch('notify', 'Compañía asignada al proyecto.');
    }

    public function removeCompany($companyId)
    {
        $user = Auth::user();
        if (!$user->can('assign users')) {
            session()->flash('error', 'Sin permisos.');
            return;
        }

        $this->project->companies()->detach($companyId);
        $this->loadCompanies();
        $this->dispatch('notify', 'Compañía eliminada del proyecto.');
    }

    public function changeRole($companyId, $role)
    {
        if (!in_array($role, ['owner', 'constructor', 'subcontractor', 'consultant', 'supplier', 'other'])) return;

        $this->project->companies()->updateExistingPivot($companyId, [
            'role_in_project' => $role
        ]);
        $this->loadCompanies();
        $this->dispatch('notify', 'Rol actualizado.');
    }

    public function render()
    {
        return view('livewire.project-companies');
    }
}