construprogress/app/Livewire/ProjectUsers.php

<?php

namespace App\Livewire;

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

class ProjectUsers extends Component
{
    public Project $project;
    public $assignedUsers = [];
    public $allUsers = [];
    public $selectedUserId = '';
    public $selectedRole = 'viewer';

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

    public function loadUsers()
    {
        $this->assignedUsers = $this->project->users()->withPivot('role_in_project')->get();
        $assignedIds = $this->assignedUsers->pluck('id')->toArray();
        $this->allUsers = User::whereNotIn('id', $assignedIds)->orderBy('name')->get();
    }

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

        $this->validate([
            'selectedUserId' => 'required|exists:users,id',
            'selectedRole' => 'required|in:supervisor,consultant,client,viewer',
        ]);

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

        $this->reset(['selectedUserId', 'selectedRole']);
        $this->loadUsers();
        $this->dispatch('notify', 'Usuario asignado al proyecto.');
    }

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

        $this->project->users()->detach($userId);
        $this->loadUsers();
        $this->dispatch('notify', 'Usuario eliminado del proyecto.');
    }

    public function changeRole($userId, $role)
    {
        if (!in_array($role, ['supervisor', 'consultant', 'client', 'viewer'])) return;

        $this->project->users()->updateExistingPivot($userId, [
            'role_in_project' => $role
        ]);
        $this->loadUsers();
        $this->dispatch('notify', 'Rol actualizado.');
    }

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