import { SITE_URL, TURNSTILE_SITE_KEY } from "./constants.mjs";
import { footer, merch, nav, shellHead } from "./templates.mjs";
import { escapeHtml, escapeXml, fmtDate, renderAuthorInline, toISO, toISODate } from "./utils.mjs";

// Structured data (JSON-LD) so Google reads the headline, image, dates and authors directly instead of guessing
const absUrl = (u = "") => (/^https?:\/\//.test(u) ? u : `${SITE_URL}/${u.replace(/^\/+/, "")}`);
const publisher = { "@type": "Organization", name: "apophenia.news", url: `${SITE_URL}/`, logo: `${SITE_URL}/favicon.svg` };

// Linked names in the byline (people with an author page) become Person authors. Unlinked co-authors are AI models,
// which schema.org has no type for, so they stay in the visible byline only.
const authorsLd = (author = "") => {
  const people = [...String(author).matchAll(/\[([^\]]+)\]\(([^)]+)\)/g)].map(([, name, href]) => ({ "@type": "Person", name: name.trim(), url: absUrl(href.trim()) }));
  return people.length ? people : [publisher];
};

// Published is the frontmatter date. Modified is the article folder's last commit (see generate-pages.mjs), never
// earlier than published.
const articleDates = (a) => {
  const published = toISO(a.date);
  return { published, modified: a.modified > published ? a.modified : published };
};

const articleLd = (a, { published, modified }) => ({
  "@context": "https://schema.org",
  "@type": "NewsArticle",
  headline: a.title,
  description: a.description,
  image: [absUrl(a.header_image)],
  datePublished: published,
  dateModified: modified,
  author: authorsLd(a.author),
  publisher,
  mainEntityOfPage: `${SITE_URL}/${a.slug}/`
});

const homeLd = {
  "@context": "https://schema.org",
  "@graph": [
    { "@type": "WebSite", name: "apophenia.news", url: `${SITE_URL}/` },
    { ...publisher, sameAs: ["https://youtube.com/@ApopheniaLoop"] }
  ]
};

export const renderHome = (articles) => `
${shellHead({
  title: "apophenia.news — The news outlet for pattern seekers",
  desc: "Signals, anomalies, civilization trajectories, and deep pattern analysis.",
  image: "https://free.direct-img.link/celestial+map?i=1",
  url: `${SITE_URL}/`,
  type: "website",
  jsonLd: homeLd
})}
${nav}
<main class="shell py-10">
  <section class="card p-6 sm:p-10 bg-gradient-to-b from-white to-indigo-50/50">
    <p class="tag mb-3"><i data-lucide="sparkles" class="h-3.5 w-3.5"></i>Pattern Intelligence Journalism</p>
    <h1 class="text-4xl sm:text-5xl font-bold leading-tight">The news outlet for pattern seekers</h1>
    <p class="mt-4 text-zinc-700 max-w-2xl">High-agency analysis at the intersection of AGI, consciousness, geopolitics, and first-contact logic.</p>
  </section>

  <section class="mt-10">
    <div class="flex items-center justify-between mb-4">
      <h2 class="text-2xl font-bold">Latest Articles</h2>
      <span class="text-sm text-zinc-500">${articles.length} published</span>
    </div>

    <div class="grid md:grid-cols-2 gap-5">
      ${articles
        .map(
          (a) => `
      <article class="card overflow-hidden hover:-translate-y-0.5 transition">
        <img src="${a.header_image}" alt="${escapeHtml(a.title)}" class="h-48 w-full object-cover" />
        <div class="p-5">
          <p class="text-xs uppercase tracking-wide text-zinc-500">${fmtDate(a.date)}</p>
          <h3 class="mt-2 text-2xl font-semibold leading-tight">
            <a href="/${a.slug}/">${escapeHtml(a.title)}</a>
          </h3>
          <p class="mt-2 text-zinc-700">${escapeHtml(a.description || "")}</p>
          <div class="mt-4 flex flex-wrap gap-2">
            ${(a.tags || []).slice(0, 4).map((t) => `<span class="tag">#${escapeHtml(t)}</span>`).join("")}
          </div>
          <a href="/${a.slug}/" class="inline-flex items-center gap-1 mt-5 text-sm font-medium">
            Read article <i data-lucide="arrow-right" class="h-4 w-4"></i>
          </a>
        </div>
      </article>`
        )
        .join("")}
    </div>
  </section>

  ${merch}
</main>
${footer}
`;

export const renderArticle = (article, dates = articleDates(article)) => `
${shellHead({
  title: `${article.title} — apophenia.news`,
  desc: article.description,
  image: article.header_image,
  url: `${SITE_URL}/${article.slug}/`,
  type: "article",
  ...dates,
  jsonLd: articleLd(article, dates)
})}
${nav}
<main class="shell py-10">
  <article class="card overflow-hidden">
    <img src="${article.header_image}" alt="${escapeHtml(article.title)}" class="h-64 w-full object-cover" />
    <div class="p-6 sm:p-10">
      <div class="flex items-center justify-between gap-4">
        <p class="text-xs uppercase tracking-wide text-zinc-500">${fmtDate(article.date)} • ${renderAuthorInline(article.author)}</p>
        <button type="button" data-copy-article aria-label="Copy article" class="inline-flex shrink-0 items-center gap-2 rounded-lg border border-zinc-200 bg-white px-2 py-2 text-sm font-medium text-zinc-800 shadow-sm transition hover:bg-zinc-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-400 sm:px-3">
          <i data-lucide="copy" class="h-4 w-4"></i><span aria-live="polite" class="hidden sm:inline">Copy article</span>
        </button>
      </div>
      <h1 class="mt-2 text-4xl sm:text-5xl font-bold leading-tight">${escapeHtml(article.title)}</h1>
      <p class="mt-4 text-zinc-700 max-w-3xl">${escapeHtml(article.description || "")}</p>
      <div class="mt-5 flex flex-wrap gap-2">
        ${(article.tags || []).map((t) => `<span class="tag">#${escapeHtml(t)}</span>`).join("")}
      </div>
      <hr class="my-8 border-zinc-200" />
      <div class="article-prose">${article.html}</div>
    </div>
    <script id="article-markdown" type="application/json">${JSON.stringify(article.markdown).replace(/</g, "\\u003c")}</script>
  </article>

  ${merch}

  <div class="mt-8">
    <a href="/" class="inline-flex items-center gap-2 text-sm">
      <i data-lucide="arrow-left" class="h-4 w-4"></i> Back to Home
    </a>
  </div>
</main>
${footer}
`;

// Served by Cloudflare Pages with a 404 status for any path that doesn't exist (instead of falling back to the homepage)
export const renderNotFound = () => `
${shellHead({
  title: "Page not found — apophenia.news",
  desc: "This page doesn't exist.",
  type: "website",
  noindex: true
})}
${nav}
<main class="shell py-10">
  <section class="card p-6 sm:p-10 text-center bg-gradient-to-b from-white to-indigo-50/50">
    <img src="https://vibegif.direct-img.link/detective/clue.webp" alt="Detective searching for clues with a magnifying glass" width="256" height="256" class="mx-auto h-48 w-48" />
    <p class="tag mt-6 mb-3"><i data-lucide="search" class="h-3.5 w-3.5"></i>404</p>
    <h1 class="text-4xl sm:text-5xl font-bold leading-tight">No pattern here</h1>
    <p class="mt-4 text-zinc-700 max-w-xl mx-auto">This page doesn't exist or has moved. Even pattern seekers hit a dead end sometimes.</p>
    <a href="/" class="mt-6 inline-flex items-center gap-2 rounded-xl bg-accent px-5 py-3 text-sm font-medium text-white transition hover:bg-indigo-700">
      <i data-lucide="arrow-left" class="h-4 w-4"></i> Back to Home
    </a>
  </section>
</main>
${footer}
`;

export const renderNewsletterPage = () => `
${shellHead({
  title: "Newsletter — apophenia.news",
  desc: "Subscribe to the apophenia.news newsletter. We won't spam you with everything — only the good stuff.",
  image: "https://free.direct-img.link/radio+telescope?i=1",
  url: `${SITE_URL}/newsletter/`,
  type: "website"
})}
${nav}
<main class="shell py-10">
  <article class="card p-6 sm:p-10 bg-gradient-to-b from-white to-indigo-50/50">
    <p class="tag mb-3"><i data-lucide="mail" class="h-3.5 w-3.5"></i>Newsletter</p>
    <h1 class="text-4xl sm:text-5xl font-bold leading-tight">Get the signal, skip the noise</h1>
    <p class="mt-4 text-zinc-700 max-w-2xl">
      The sharpest pattern analysis, delivered straight to your inbox. <strong>We won't spam you with everything — only the good stuff.</strong> No filler, no daily blasts, just the pieces worth your attention.
    </p>

    <form
      class="mt-8 max-w-xl"
      x-data="{
        email: '',
        loading: false,
        ok: false,
        error: '',
        async submit() {
          this.error = '';
          this.ok = false;
          this.loading = true;
          const token = () => this.$el.querySelector('[name=cf-turnstile-response]')?.value;
          for (let i = 0; i < 50 && !token(); i++) await new Promise((r) => setTimeout(r, 100));
          try {
            const res = await fetch('https://newsletter.planetrenox.com/api/sub', {
              method: 'POST',
              headers: { 'Content-Type': 'application/json' },
              body: JSON.stringify({ pool: 'apophenia', email: this.email, token: token() || '' })
            });
            const data = await res.json();
            if (res.ok && data.ok) {
              this.ok = true;
              this.email = '';
            } else {
              this.error = data.error === 'invalid email' ? 'That email doesn\\'t look right.'
                : data.error === 'captcha failed' ? 'Couldn\\'t verify you\\'re human. Please try again.'
                : 'Something went wrong. Please try again.';
            }
          } catch (e) {
            this.error = 'Network error. Please try again.';
          }
          window.turnstile?.reset();
          this.loading = false;
        }
      }"
      @submit.prevent="submit"
    >
      <div class="flex flex-col sm:flex-row gap-3">
        <input
          type="email"
          required
          placeholder="you@example.com"
          x-model="email"
          :disabled="loading"
          class="flex-1 rounded-xl border border-zinc-300 bg-white px-4 py-3 text-zinc-900 placeholder-zinc-400 focus:outline-none focus:ring-2 focus:ring-indigo-400"
          aria-label="Email address"
        />
        <button
          type="submit"
          :disabled="loading"
          class="inline-flex items-center justify-center gap-2 rounded-xl bg-accent px-6 py-3 font-medium text-white transition hover:bg-indigo-700 disabled:opacity-60"
        >
          <span x-show="!loading">Subscribe</span>
          <span x-show="loading" x-cloak>Subscribing…</span>
          <i data-lucide="arrow-right" class="h-4 w-4"></i>
        </button>
      </div>
      <div class="cf-turnstile mt-3" data-sitekey="${TURNSTILE_SITE_KEY}" data-appearance="interaction-only" data-size="flexible"></div>

      <p x-show="ok" x-cloak class="mt-4 inline-flex items-center gap-2 text-sm font-medium text-emerald-700">
        <i data-lucide="check-circle" class="h-4 w-4"></i>
        You're in. Welcome to the pattern.
      </p>
      <p x-show="error" x-cloak class="mt-4 inline-flex items-center gap-2 text-sm font-medium text-rose-700">
        <i data-lucide="alert-circle" class="h-4 w-4"></i>
        <span x-text="error"></span>
      </p>

      <p class="mt-4 text-xs text-zinc-500"><a href="/newsletter/unsubscribe" class="underline">Unsubscribe</a> anytime. We never share your email.</p>
    </form>
    <script src="https://challenges.cloudflare.com/turnstile/v0/api.js" async defer></script>
  </article>

  ${merch}

  <div class="mt-8">
    <a href="/" class="inline-flex items-center gap-2 text-sm">
      <i data-lucide="arrow-left" class="h-4 w-4"></i> Back to Home
    </a>
  </div>
</main>
${footer}
`;

export const renderUnsubscribePage = () => `
${shellHead({
  title: "Unsubscribe — apophenia.news",
  desc: "Unsubscribe from the apophenia.news newsletter.",
  url: `${SITE_URL}/newsletter/unsubscribe`
})}
${nav}
<main class="shell py-10">
  <section class="card max-w-md mx-auto p-6 sm:p-8" x-data="{
    email: '', done: '', auto: false, loading: false, ok: false, error: '',
    init() {
      // ?email=a+b@x.com -> URLSearchParams turns '+' into ' ', and emails never contain spaces
      const e = new URLSearchParams(location.search).get('email')?.trim().replace(/ /g, '+');
      if (e) (this.email = e, this.auto = true, this.submit());
    },
    async submit() {
      if (this.loading) return;
      this.loading = true;
      this.ok = false;
      this.error = '';
      try {
        const res = await fetch('https://newsletter.planetrenox.com/api/unsub', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ pool: 'apophenia', email: this.email.trim() })
        });
        const data = await res.json();
        if (res.ok &amp;&amp; data.ok) {
          this.done = data.email;
          this.ok = true;
          this.email = '';
          history.replaceState(null, '', location.pathname);
        } else {
          this.error = data.error === 'invalid email' ? 'Please enter a valid email address.' : 'Something went wrong. Please try again.';
        }
      } catch {
        this.error = 'Could not connect. Please try again.';
      } finally {
        this.loading = false;
        this.auto = false;
      }
    }
  }">
    <div x-show="ok" x-cloak role="status" class="text-center py-2">
      <svg class="unsub-check mx-auto h-32 w-32" viewBox="0 0 120 120" aria-hidden="true">
        <circle class="uc-wave" cx="60" cy="60" r="44"/>
        <g class="uc-burst">${[0, 45, 90, 135, 180, 225, 270, 315].map((a) => `<line x1="60" y1="9" x2="60" y2="2" transform="rotate(${a} 60 60)"/>`).join("")}</g>
        <circle class="uc-disc" cx="60" cy="60" r="44"/>
        <circle class="uc-ring" cx="60" cy="60" r="44" pathLength="1"/>
        <path class="uc-tick" d="M39 61.5l14 14 28-29" pathLength="1"/>
      </svg>
      <h1 class="uc-text mt-5 text-3xl font-bold">You're unsubscribed</h1>
      <p class="uc-text mt-3 text-zinc-600"><b class="text-zinc-900 break-all" x-text="done"></b> won't receive Apophenia emails anymore.</p>
      <a href="/newsletter/" class="uc-text mt-6 inline-block text-sm">Changed your mind? Resubscribe</a>
    </div>

    <div x-show="auto &amp;&amp; !ok" x-cloak class="py-10 text-center text-zinc-600">
      <span class="mx-auto mb-4 block h-10 w-10 animate-spin rounded-full border-4 border-emerald-100 border-t-emerald-500"></span>
      Unsubscribing <b class="text-zinc-900 break-all" x-text="email"></b>…
    </div>

    <div x-show="!ok &amp;&amp; !auto">
      <h1 class="text-3xl font-bold">Unsubscribe</h1>
      <p class="mt-3 text-zinc-600">Enter your email to stop receiving our newsletter.</p>
      <form class="mt-6" novalidate @submit.prevent="submit">
        <label for="unsubscribe-email" class="block text-sm font-medium">Email address</label>
        <input id="unsubscribe-email" name="email" type="email" autocomplete="email" required x-model="email" :disabled="loading"
          placeholder="you@example.com" class="mt-2 w-full rounded-xl border border-zinc-300 px-4 py-3 focus:outline-none focus:ring-2 focus:ring-indigo-400" />
        <button type="submit" :disabled="loading"
          class="mt-3 w-full rounded-xl bg-accent px-4 py-3 font-medium text-white transition hover:bg-indigo-700 disabled:opacity-60"
          x-text="loading ? 'Unsubscribing…' : 'Unsubscribe'">Unsubscribe</button>
        <p x-show="error" x-cloak role="alert" x-text="error" class="mt-4 text-sm text-rose-700"></p>
      </form>
      <a href="/newsletter/" class="mt-6 inline-block text-sm">Back to newsletter</a>
    </div>
  </section>
</main>
${footer}
`;

export const renderWritePage = () => `
${shellHead({
  title: "Become a writer for apophenia.news",
  desc: "Pitch your pattern analysis. Email your story as a Markdown file for review and publication.",
  image: "https://free.direct-img.link/typewriter?i=2",
  url: `${SITE_URL}/write/`,
  type: "website"
})}
${nav}
<main class="shell py-10">
  <article class="card p-6 sm:p-10">
    <p class="tag mb-3"><i data-lucide="pen-line" class="h-3.5 w-3.5"></i>Contributor Program</p>
    <h1 class="text-4xl sm:text-5xl font-bold leading-tight">Become a writer for apophenia.news</h1>
    <p class="mt-4 text-zinc-700 max-w-3xl">
      Have a strong pattern-based story, analysis, or investigation? Send it to us.
    </p>

    <div class="article-prose mt-8">
      <h2>How to submit</h2>
      <ul>
        <li>Write your article in a <strong>.md (Markdown)</strong> file.</li>
        <li>Email it to <a href="mailto:planetrenox@pm.me">planetrenox@pm.me</a>.</li>
        <li>If approved, your story will be published on apophenia.news.</li>
        <li>Your byline can use your real name or an alias.</li>
      </ul>

      <h2>Frontmatter template (optional)</h2>
      <pre><code>---
title: "Your headline"
slug: your-slug
date: 2026-03-01
author: Your Name or Alias
description: "1-2 sentence summary"
header_image: https://free.direct-img.link/your+image+query
tags:
  - your-tag
  - another-tag
---</code></pre>
    </div>
  </article>
</main>
${footer}
`;

export const renderAuthorPage = (author) => `
${shellHead({
  title: `${author.name} — apophenia.news`,
  desc: author.bio,
  image: author.image || "https://free.direct-img.link/fountain+pen?i=7",
  url: `${SITE_URL}/author/${author.slug}/`,
  type: "profile"
})}
${nav}
<main class="shell py-10">
  <article class="card p-6 sm:p-10">
    <p class="tag mb-3"><i data-lucide="user-round" class="h-3.5 w-3.5"></i>Author</p>
    <h1 class="text-4xl sm:text-5xl font-bold leading-tight">${escapeHtml(author.name)}</h1>

    <div class="mt-8 grid md:grid-cols-[240px,1fr] gap-8 items-start">
      <div class="h-64 w-full rounded-2xl border border-dashed border-zinc-300 bg-zinc-50/70 flex items-center justify-center text-sm text-zinc-500">
        Photo coming soon
      </div>

      <div class="article-prose max-w-none">
        <p>${escapeHtml(author.bio)}</p>
        <p><strong>Contact:</strong> <a href="mailto:${escapeHtml(author.contact)}">${escapeHtml(author.contact)}</a></p>
      </div>
    </div>
  </article>
</main>
${footer}
`;

export const renderRss = (articles) => {
  const lastBuildDate = new Date().toUTCString();
  const items = articles
    .map((a) => {
      const link = `${SITE_URL}/${a.slug}/`;
      return `<item>
  <title>${escapeXml(a.title || "")}</title>
  <link>${escapeXml(link)}</link>
  <guid>${escapeXml(link)}</guid>
  <pubDate>${new Date(a.date).toUTCString()}</pubDate>
  <description>${escapeXml(a.description || "")}</description>
</item>`;
    })
    .join("\n");

  return `<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
<channel>
  <title>apophenia.news</title>
  <link>${SITE_URL}/</link>
  <description>Signals, anomalies, civilization trajectories, and deep pattern analysis.</description>
  <language>en-us</language>
  <lastBuildDate>${lastBuildDate}</lastBuildDate>
  ${items}
</channel>
</rss>
`;
};

export const renderSitemap = (articles, authors = []) => {
  const now = toISODate(new Date());
  const urls = [
    { loc: `${SITE_URL}/`, lastmod: now },
    { loc: `${SITE_URL}/newsletter/`, lastmod: now },
    { loc: `${SITE_URL}/write/`, lastmod: now },
    ...authors.map((a) => ({ loc: `${SITE_URL}/author/${a.slug}/`, lastmod: now })),
    ...articles.map((a) => ({ loc: `${SITE_URL}/${a.slug}/`, lastmod: toISODate(articleDates(a).modified) }))
  ];

  return `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
${urls
  .map(
    (u) => `  <url>
    <loc>${escapeXml(u.loc)}</loc>
    <lastmod>${u.lastmod}</lastmod>
  </url>`
  )
  .join("\n")}
</urlset>
`;
};

export const renderRobots = () => `User-agent: *
Allow: /

Sitemap: ${SITE_URL}/sitemap.xml
`;