<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Policies;

use App\Models\User;
use Modules\Helpdesk\Models\Ticket;

final class TicketPolicy
{
    public function viewAny(User $user): bool
    {
        return true;
    }

    public function view(User $user, Ticket $ticket): bool
    {
        if ($this->isHelpdeskAdmin($user)) {
            return true;
        }

        if ($this->isHelpdeskAgent($user)) {
            return (int) $ticket->agent_id === (int) $user->id
                || (int) $ticket->user_id === (int) $user->id;
        }

        return (int) $ticket->user_id === (int) $user->id;
    }

    public function create(User $user): bool
    {
        return true;
    }

    /**
     * Helpdesk workflow updates.
     *
     * Admins can update every Helpdesk ticket.
     *
     * Agents can update any ticket that is visible to them under the Helpdesk
     * visibility rules. This is important for Kanban drag/drop: a card must
     * never be displayed as movable and then fail authorization on drop.
     *
     * Normal requesters cannot change workflow/status/assignment data.
     */
    public function update(User $user, Ticket $ticket): bool
    {
        if ($this->isHelpdeskAdmin($user)) {
            return true;
        }

        if (! $this->isHelpdeskAgent($user)) {
            return false;
        }

        return (int) $ticket->agent_id === (int) $user->id
            || (int) $ticket->user_id === (int) $user->id;
    }

    public function comment(User $user, Ticket $ticket): bool
    {
        return $this->view($user, $ticket);
    }

    public function delete(User $user, Ticket $ticket): bool
    {
        return $this->isHelpdeskAdmin($user);
    }

    private function isHelpdeskAdmin(User $user): bool
    {
        if (method_exists($user, 'isHelpdeskAdmin')) {
            return $user->isHelpdeskAdmin();
        }

        if ((bool) ($user->helpdesk_admin ?? false)) {
            return true;
        }

        if (method_exists($user, 'isAdmin')) {
            return $user->isAdmin();
        }

        if (method_exists($user, 'isMpbaPlatformAdmin')) {
            return $user->isMpbaPlatformAdmin();
        }

        return false;
    }

    private function isHelpdeskAgent(User $user): bool
    {
        if (method_exists($user, 'isHelpdeskAgent')) {
            return $user->isHelpdeskAgent();
        }

        return (bool) ($user->helpdesk_agent ?? false);
    }
}