<?php

namespace Modules\PageBuilder\Controllers;

use App\Controllers\BaseAdminController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Modules\PageBuilder\Models\Page;
use Modules\PageBuilder\Classes\Paginator;
use Illuminate\Support\Str;

class AdminController extends BaseAdminController
{
    /**
     * Lists all pages in the admin panel.
     */
    public function index(Request $request): Response
    {
        $perPage = 15;
        $currentPage = (int) $request->query->get('page', 1);
        $total = Page::count();

        $paginator = new Paginator($total, $perPage, $currentPage);

        $pages = Page::with(['creator', 'updater'])
                     ->orderBy('created_at', 'desc')
                     ->skip($paginator->getOffset())
                     ->take($perPage)
                     ->get();

        return $this->renderAdminView('@pagebuilder/admin/index.twig', [
            'pages' => $pages,
            'paginator' => $paginator->toArray(),
            'title' => 'Gerenciar Páginas'
        ]);
    }

    /**
     * Displays the page creation form.
     */
    public function create(Request $request): Response
    {
        return $this->renderAdminView('@pagebuilder/admin/create.twig', [
            'title' => 'Criar Nova Página'
        ]);
    }

    /**
     * Stores a new page.
     */
    public function store(Request $request): Response
    {
        $data = $request->request->all();

        // Basic validation
        if (empty($data['title']) || empty($data['slug']) || empty($data['content'])) {
             $_SESSION['error'] = 'Preencha todos os campos obrigatórios (Título, Slug, Conteúdo).';
             return new RedirectResponse(url('/admin/pages/create'));
        }

        // Check unique slug
        if (Page::where('pages_slug', $data['slug'])->exists()) {
             $_SESSION['error'] = 'Este slug já está sendo utilizado.';
             return new RedirectResponse(url('/admin/pages/create'));
        }

        $data['slug'] = Str::slug($data['slug']);
        $data['created_by'] = $_SESSION['user_id'] ?? null;

        if (isset($data['is_published']) && $data['is_published']) {
            $data['published_at'] = date('Y-m-d H:i:s');
        } else {
            $data['is_published'] = 0;
        }

        Page::create($data);

        $_SESSION['success'] = 'Página criada com sucesso!';
        return new RedirectResponse(url('/admin/pages'));
    }

    /**
     * Displays the page edit form.
     */
    public function edit(Request $request, int $id): Response
    {
        $page = Page::findOrFail($id);

        return $this->renderAdminView('@pagebuilder/admin/edit.twig', [
            'page' => $page,
            'title' => 'Editar Página: ' . $page->title
        ]);
    }

    /**
     * Updates an existing page.
     */
    public function update(Request $request, int $id): Response
    {
        $page = Page::findOrFail($id);
        $data = $request->request->all();

        // Basic validation
        if (empty($data['title']) || empty($data['slug']) || empty($data['content'])) {
             $_SESSION['error'] = 'Preencha todos os campos obrigatórios.';
             return new RedirectResponse(url("/admin/pages/{$id}/edit"));
        }

        // Check unique slug (ignoring the page itself)
        if (Page::where('pages_slug', $data['slug'])->where('pages_id', '!=', $id)->exists()) {
             $_SESSION['error'] = 'Este slug já está sendo utilizado.';
             return new RedirectResponse(url("/admin/pages/{$id}/edit"));
        }

        $data['slug'] = Str::slug($data['slug']);
        $data['updated_by'] = $_SESSION['user_id'] ?? null;

        // Check if the page is being published now
        if (!$page->is_published && isset($data['is_published']) && $data['is_published']) {
            $data['published_at'] = date('Y-m-d H:i:s');
        }

        if (!isset($data['is_published'])) {
            $data['is_published'] = 0;
        }

        $page->update($data);

        $_SESSION['success'] = 'Página atualizada com sucesso!';
        return new RedirectResponse(url('/admin/pages'));
    }

    /**
     * Deletes a page.
     */
    public function destroy(Request $request, int $id): Response
    {
        $page = Page::findOrFail($id);
        $page->delete();

        $_SESSION['success'] = 'Página excluída com sucesso!';
        return new RedirectResponse(url('/admin/pages'));
    }

    /**
     * Publishes a page.
     */
    public function publish(Request $request, int $id): Response
    {
        $page = Page::findOrFail($id);
        $page->publish();

        $_SESSION['success'] = 'Página publicada com sucesso!';
        return new RedirectResponse($request->headers->get('referer', url('/admin/pages')));
    }

    /**
     * Sets a page as draft.
     */
    public function unpublish(Request $request, int $id): Response
    {
        $page = Page::findOrFail($id);
        $page->unpublish();

        $_SESSION['success'] = 'Página definida como rascunho!';
        return new RedirectResponse($request->headers->get('referer', url('/admin/pages')));
    }
}