<?php

namespace App\Controller;

use App\Form\ChapterNoteType;
use App\Repository\ChapterNoteRepository;
use App\Storyline\ChapterOutline;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Attribute\Route;
use Symfony\Component\Security\Http\Attribute\IsGranted;

#[IsGranted('IS_AUTHENTICATED_FULLY')]
class StorylineController extends AbstractController
{
    /**
     * The storyline is a set of hand-written chapters. Each entry points at a
     * Twig partial under templates/storyline/chapters/. Add a chapter by adding
     * a row here and the matching template; order in this array is reading order.
     *
     * - eyebrow: the kicker shown above the chapter title ("Overview", "Prologue",
     *   "Session 1", ...)
     * - tag: 1-2 characters for the little badge in the chapter list / sidebar
     *
     * @var array<string, array{title: string, eyebrow: string, tag: string, summary: string, template: string}>
     */
    private const CHAPTERS = [
        'overview' => [
            'title' => 'Campaign Overview',
            'eyebrow' => 'Overview',
            'tag' => 'Ov',
            'summary' => 'The whole shape of the Brackenford campaign, from the sealing of Kyuss four centuries ago to the final crisis — the truth behind the blood, the red herring around Sir Aldren, and how it can resolve.',
            'template' => 'storyline/chapters/overview.html.twig',
        ],
        'prologue-the-long-road' => [
            'title' => 'Prologue — The Long Road to Brackenford',
            'eyebrow' => 'Prologue',
            'tag' => 'Pr',
            'summary' => "The courier job that carries the party to Brackenford: hired in Bellhaven to deliver Edric Vale's estate to his nephew Eamon, twenty days on the road, and one night in a guest cottage that won't let anyone sleep. Levels 1 to 2, about 2.5 hours.",
            'template' => 'storyline/chapters/prologue-the-long-road.html.twig',
        ],
        'session-1-outside-blood' => [
            'title' => 'Session 1 — Outside Blood',
            'eyebrow' => 'Session 1',
            'tag' => 'S1',
            'summary' => "The party arrives in Brackenford two hours after Eamon Vale met Aldren. A warm welcome from the Thorn beekeepers, a family hearing of Edric's death, a signature nobody can get because the council has Eamon — and, late at night, something dripping from the collection cart. Level 2, about 2.5 hours.",
            'template' => 'storyline/chapters/session-1-outside-blood.html.twig',
        ],
    ];

    #[Route('/storyline', name: 'app_storyline', methods: ['GET'])]
    public function index(): Response
    {
        return $this->render('storyline/index.html.twig', [
            'chapters' => self::CHAPTERS,
        ]);
    }

    #[Route('/storyline/{slug}', name: 'app_storyline_chapter', requirements: ['slug' => '[a-z0-9-]+'], methods: ['GET', 'POST'])]
    public function chapter(string $slug, Request $request, ChapterNoteRepository $notes, EntityManagerInterface $em, ChapterOutline $outline): Response
    {
        if (!isset(self::CHAPTERS[$slug])) {
            throw $this->createNotFoundException('No such storyline chapter.');
        }

        $note = $notes->findOrCreate($slug);
        $form = $this->createForm(ChapterNoteType::class, $note);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            if (null === $note->getId()) {
                $em->persist($note);
            }
            $em->flush();
            $this->addFlash('success', 'Chapter notes saved.');

            return $this->redirectToRoute('app_storyline_chapter', ['slug' => $slug]);
        }

        // Render every chapter once: the current one is shown (with anchors),
        // the rest only feed the sidebar's per-section jump lists.
        $sections = [];
        $body = '';
        foreach (self::CHAPTERS as $s => $c) {
            $processed = $outline->process($this->renderView($c['template']));
            $sections[$s] = $processed['sections'];
            if ($s === $slug) {
                $body = $processed['html'];
            }
        }

        $slugs = array_keys(self::CHAPTERS);
        $pos = array_search($slug, $slugs, true);

        return $this->render('storyline/chapter.html.twig', [
            'chapters' => self::CHAPTERS,
            'slug' => $slug,
            'chapter' => self::CHAPTERS[$slug],
            'body' => $body,
            'sections' => $sections,
            'note' => $note,
            'form' => $form,
            'prev' => $pos > 0 ? $slugs[$pos - 1] : null,
            'next' => $pos < \count($slugs) - 1 ? $slugs[$pos + 1] : null,
        ]);
    }
}