---
import BaseLayout from './BaseLayout.astro';
import BlogTagChip from '../components/BlogTagChip.astro';
import type { BlogTag } from '../lib/blog-tags';
import GiscusComments from '../components/GiscusComments.astro';
import FaqAccordion from '../components/blog/FaqAccordion.astro';

interface FaqEntry {
  q: string;
  a: string;
}

interface Props {
  title: string;
  description: string;
  pubDate: Date;
  updatedDate?: Date;
  author: string;
  tags?: BlogTag[];
  heroImage?: string;
  /** Optional FAQ from the post frontmatter: rendered after the body and emitted as FAQPage schema. */
  faq?: FaqEntry[];
}

const { title, description, pubDate, updatedDate, author, tags = [], heroImage, faq = [] } = Astro.props;

const formattedDate = pubDate.toLocaleDateString('en-US', {
  year: 'numeric',
  month: 'long',
  day: 'numeric',
});

const formattedUpdatedDate = updatedDate?.toLocaleDateString('en-US', {
  year: 'numeric',
  month: 'long',
  day: 'numeric',
});

/** Served from the site: an avatar fetched from GitHub would report every reader to them. */
const AUTHOR_AVATAR_URL = '/iptvnator/author-4gray.jpg';
const canonicalURL = new URL(Astro.url.pathname, Astro.site).toString();
const blogPostSchema = {
  '@context': 'https://schema.org',
  '@type': 'BlogPosting',
  headline: title,
  description,
  datePublished: pubDate.toISOString(),
  dateModified: (updatedDate ?? pubDate).toISOString(),
  author: {
    '@type': 'Person',
    name: author,
    url: 'https://github.com/4gray',
  },
  publisher: {
    '@type': 'Organization',
    name: 'IPTVnator',
    url: 'https://4gray.github.io/iptvnator/',
    logo: {
      '@type': 'ImageObject',
      url: 'https://4gray.github.io/iptvnator/favicon-256x256.png',
    },
  },
  mainEntityOfPage: canonicalURL,
  image: heroImage ? new URL(heroImage, Astro.site).toString() : undefined,
};
const faqSchema =
  faq.length > 0
    ? {
        '@context': 'https://schema.org',
        '@type': 'FAQPage',
        mainEntity: faq.map((entry) => ({
          '@type': 'Question',
          name: entry.q,
          acceptedAnswer: { '@type': 'Answer', text: entry.a },
        })),
      }
    : null;
const jsonLd = faqSchema ? [blogPostSchema, faqSchema] : blogPostSchema;
---

<BaseLayout
  title={`${title} | IPTVnator Blog`}
  description={description}
  image={heroImage}
  type="article"
  publishedTime={pubDate.toISOString()}
  modifiedTime={(updatedDate ?? pubDate).toISOString()}
  keywords={tags}
  jsonLd={jsonLd}
>
  <article class="pt-36 pb-24">
    <div class="relative mx-auto max-w-3xl px-6">
      <div class="pointer-events-none absolute -top-16 -right-14 hidden w-44 rotate-[-8deg] opacity-30 mix-blend-screen md:block lg:w-52">
        <img
          src="/iptvnator/illustrations/blog-corner-signal-mark.svg"
          alt=""
          aria-hidden="true"
          class="w-full object-contain"
          loading="lazy"
        />
      </div>

      <!-- Back link -->
      <a
        href="/iptvnator/blog/"
        class="inline-flex items-center gap-1.5 font-mono text-xs uppercase tracking-[0.1em] text-surface-500 transition-colors hover:text-accent-400"
      >
        <svg class="h-3.5 w-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
          <path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
        </svg>
        Back to blog
      </a>

      <!-- Header -->
      <header class="mt-10">
        <div class="flex flex-wrap items-center gap-2">
          <time datetime={pubDate.toISOString()} class="font-mono text-xs text-surface-500">
            {formattedDate}
          </time>
          {
            tags.length > 0 && (
              <>
                <span class="text-surface-700">&middot;</span>
                {tags.map((tag) => (
                  <BlogTagChip tag={tag} class="px-2.5 font-medium" />
                ))}
              </>
            )
          }
        </div>

        <h1 class="mt-5 font-display text-3xl font-bold tracking-tight text-surface-50 sm:text-4xl">
          {title}
        </h1>

        <p class="mt-4 text-lg text-surface-400">{description}</p>

        <div class="mt-6 flex items-center gap-3">
          <img
            src={AUTHOR_AVATAR_URL}
            alt={`${author} avatar`}
            class="h-8 w-8 rounded-full border border-surface-700 object-cover"
            loading="lazy"
          />
          <div>
            <div class="text-sm font-medium text-surface-100">{author}</div>
            {
              updatedDate && (
                <div class="font-mono text-[11px] text-surface-500">
                  Updated {formattedUpdatedDate}
                </div>
              )
            }
          </div>
        </div>

        <hr class="section-divider mt-10" />
      </header>

      <!-- Hero image -->
      {heroImage && (
        <div class="relative mt-10">
          <div class="absolute -inset-6 rounded-2xl bg-accent-500/[0.03] blur-2xl" />
          <div class="relative overflow-hidden rounded-xl border border-surface-700/60 bg-surface-900 shadow-lg shadow-black/20">
            <img src={heroImage} alt="" class="w-full" loading="eager" />
          </div>
        </div>
      )}

      <!-- Content -->
      <div
        class="prose prose-invert mt-12 max-w-none prose-headings:font-display prose-headings:font-semibold prose-headings:tracking-tight prose-headings:text-surface-100 prose-p:text-surface-300 prose-a:text-accent-400 prose-a:no-underline prose-a:decoration-accent-500/30 hover:prose-a:underline prose-strong:text-surface-100 prose-code:rounded prose-code:bg-surface-800/50 prose-code:px-1.5 prose-code:py-0.5 prose-code:font-mono prose-code:text-accent-300 prose-code:before:content-[''] prose-code:after:content-[''] prose-pre:border prose-pre:border-surface-700/60 prose-pre:bg-surface-900/50 prose-blockquote:border-accent-500/30 prose-blockquote:text-surface-400 prose-hr:border-surface-700/60"
      >
        <slot />
      </div>

      {faq.length > 0 && (
        <section class="mt-16" aria-labelledby="post-faq-heading">
          <hr class="section-divider" />
          <span class="mt-12 block font-mono text-xs uppercase tracking-[0.2em] text-accent-500">FAQ</span>
          <h2 id="post-faq-heading" class="mt-3 font-display text-2xl font-bold tracking-tight text-surface-50 sm:text-3xl">
            Frequently asked questions
          </h2>
          <FaqAccordion items={faq} />
        </section>
      )}

      <GiscusComments />
    </div>
  </article>
</BaseLayout>