{% extends "base.html" %}

{#
  SEO and AEO head additions for cA2A.

  1. <title>: Material appends " - site_name" to every page title, so the home
     page read "cA2A: ... - cA2A". The home page uses its front-matter title
     alone (index.md is the site home here, separate from README.md), and
     other pages drop the suffix when the title already contains the site name.

  2. Open Graph and Twitter card meta, with og:title equal to <title>.

  3. JSON-LD: one Organization node under the hub's @id, so every AgenTrust
     site names the same organization; a WebSite; a WebPage (home) or
     TechArticle (inner page) carrying this page's own title, description and
     canonical URL; a BreadcrumbList on inner pages; and the project node on
     the home page.

  Per-page meta descriptions come from hooks/seo.py. Asset paths are derived
  from config.site_url: assets live under /docs/assets/ here because docs_dir
  is the repository root, which differs from sibling repositories.
#}

{% block htmltitle %}
  {%- set t = page.meta.title if page and page.meta and page.meta.title else (page.title | striptags if page and page.title and not page.is_homepage else "") -%}
  {%- if not t -%}
    <title>{{ config.site_name }}</title>
  {%- elif (page and page.is_homepage) or config.site_name in t -%}
    <title>{{ t }}</title>
  {%- else -%}
    <title>{{ t }} - {{ config.site_name }}</title>
  {%- endif -%}
{% endblock %}

{% block extrahead %}
  {{ super() }}
  {%- set t = page.meta.title if page and page.meta and page.meta.title else (page.title | striptags if page and page.title and not page.is_homepage else "") -%}
  {%- if not t -%}
    {%- set page_title = config.site_name -%}
  {%- elif (page and page.is_homepage) or config.site_name in t -%}
    {%- set page_title = t -%}
  {%- else -%}
    {%- set page_title = t ~ " - " ~ config.site_name -%}
  {%- endif -%}
  {%- set page_desc = page.meta.description if page and page.meta and page.meta.description else config.site_description -%}
  {%- set page_url = page.canonical_url if page and page.canonical_url else config.site_url -%}
  {%- set is_home = page and page.is_homepage -%}
  {%- set org = "https://agentrust-io.com/#organization" -%}
  {%- set og_image = config.site_url ~ 'docs/assets/og.png' -%}

  <meta property="og:type" content="website">
  <meta property="og:site_name" content="AgenTrust">
  <meta property="og:title" content="{{ page_title }}">
  <meta property="og:description" content="{{ page_desc }}">
  <meta property="og:url" content="{{ page_url }}">
  <meta property="og:image" content="{{ og_image }}">
  <meta property="og:image:width" content="1200">
  <meta property="og:image:height" content="630">
  <meta property="og:image:alt" content="cA2A: part of the AgenTrust verifiable AI supply chain">
  <meta property="og:locale" content="en_US">

  <meta name="twitter:card" content="summary_large_image">
  <meta name="twitter:title" content="{{ page_title }}">
  <meta name="twitter:description" content="{{ page_desc }}">
  <meta name="twitter:image" content="{{ og_image }}">

  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@graph": [
      {
        "@type": "Organization",
        "@id": {{ org | tojson }},
        "name": "AgenTrust",
        "url": "https://agentrust-io.com/",
        "sameAs": [
          "https://github.com/agentrust-io",
          "https://trace.agentrust-io.com",
          "https://manifest.agentrust-io.com",
          "https://cmcp.agentrust-io.com",
          "https://ca2a.agentrust-io.com",
          "https://wcm.agentrust-io.com",
          "https://tests.agentrust-io.com",
          "https://governance.agentrust-io.com"
        ]
      },
      {
        "@type": "WebSite",
        "@id": {{ (config.site_url ~ "#website") | tojson }},
        "name": {{ config.site_name | tojson }},
        "url": {{ config.site_url | tojson }},
        "publisher": { "@id": {{ org | tojson }} }
      },
      {
        "@type": {{ ("WebPage" if is_home else "TechArticle") | tojson }},
        "@id": {{ (page_url ~ "#page") | tojson }},
        "url": {{ page_url | tojson }},
        "name": {{ page_title | tojson }},
        "headline": {{ page_title | tojson }},
        "description": {{ page_desc | tojson }},
        "isPartOf": { "@id": {{ (config.site_url ~ "#website") | tojson }} },
        "publisher": { "@id": {{ org | tojson }} },
        "inLanguage": "en"
      }
      {%- if is_home %},
      {
        "@type": "SoftwareSourceCode",
        "@id": {{ (config.site_url ~ "#software") | tojson }},
        "name": "cA2A (Confidential Agent2Agent)",
        "description": "A trust profile on the Agent2Agent (A2A) protocol. Where A2A's Signed Agent Card verifies only the domain owner, cA2A adds attested attenuated delegation, a sealed peer channel, and an offline-verifiable provenance record per hop. Binding the seal to a verified attested measurement on a live call is on the roadmap.",
        "url": {{ config.site_url | tojson }},
        "codeRepository": {{ config.repo_url | tojson }},
        "programmingLanguage": "Python",
        "license": "https://opensource.org/licenses/MIT",
        "author": { "@id": {{ org | tojson }} },
        "publisher": { "@id": {{ org | tojson }} }
      }
      {%- else %},
      {
        "@type": "BreadcrumbList",
        "itemListElement": [
          { "@type": "ListItem", "position": 1, "name": {{ config.site_name | tojson }}, "item": {{ config.site_url | tojson }} },
          { "@type": "ListItem", "position": 2, "name": {{ page_title | tojson }}, "item": {{ page_url | tojson }} }
        ]
      }
      {%- endif %}
    ]
  }
  </script>
{% endblock %}