{% extends "base.html" %}
{% block title %}{{ date }} — digest{% endblock %}
{% block content %}
<header class="topbar">
  <a href="/digests">← history</a>
  <div class="topbar-center">
    <h2>
      {{ date }}{% if repo %} <span class="scope-badge">{{ repo }}</span>{% endif %}
    </h2>
    {% if (repo and daily_exists) or other_repos %}
    <nav class="scope-links">
      {% if repo and daily_exists %}<a href="/digest/{{ date }}">daily</a>{% endif %}
      {% for other in other_repos %}
        {% if not loop.first or (repo and daily_exists) %}<span class="scope-sep">·</span>{% endif %}
        <a href="/digest/{{ other }}/{{ date }}">{{ other }}</a>
      {% endfor %}
    </nav>
    {% endif %}
  </div>
  <a href="/generate" class="generate-link">generate custom</a>
</header>
<div class="layout">
  <article class="digest-body">
    {{ digest_html | safe }}
  </article>
  <aside class="chat-panel">
    <h3>Follow-up questions</h3>
    <form id="ask-form">
      <label>
        Mode
        <select id="mode" name="mode">
          <option value="fast">fast</option>
          <option value="deep">deep (tools)</option>
        </select>
      </label>
      <textarea id="question" name="question" required
                placeholder="what changed around i18n?"></textarea>
      <button type="submit">ask</button>
    </form>
    <div id="chat-log" class="chat-log" aria-live="polite"></div>
    <script>
    (() => {
      const form = document.getElementById('ask-form');
      const log = document.getElementById('chat-log');
      const date = "{{ date }}";
      const repo = "{{ repo or '' }}";
      form.addEventListener('submit', async (e) => {
        e.preventDefault();
        const q = form.question.value.trim();
        if (!q) return;
        const mode = form.mode.value;
        const turn = document.createElement('article');
        turn.className = 'chat-turn';
        turn.innerHTML = `<div class="question"><strong>Q:</strong> ${escapeHtml(q)}</div><div class="answer"></div>`;
        log.appendChild(turn);
        const answerEl = turn.querySelector('.answer');
        const fd = new FormData();
        fd.set('question', q);
        fd.set('mode', mode);
        const qs = new URLSearchParams({ date });
        if (repo) qs.set('repo', repo);
        const resp = await fetch(`/ask/stream?${qs}`, { method: 'POST', body: fd });
        const reader = resp.body.getReader();
        const dec = new TextDecoder();
        let buf = '';
        while (true) {
          const { value, done } = await reader.read();
          if (done) break;
          buf += dec.decode(value, { stream: true });
          const events = buf.split(/\r?\n\r?\n/);
          buf = events.pop();
          for (const evt of events) {
            const lines = evt.split(/\r?\n/);
            let event = 'message', data = '';
            for (const line of lines) {
              if (line.startsWith('event:')) event = line.slice(6).trim();
              if (line.startsWith('data:')) data += line.slice(5).replace(/^ /, '').replace(/\r$/, '');
            }
            if (event === 'token') answerEl.textContent += data;
            if (event === 'rendered') answerEl.innerHTML = data;
            if (event === 'error') answerEl.innerHTML = `<em>error: ${escapeHtml(data)}</em>`;
            if (event === 'done') form.question.value = '';
          }
        }
      });
      function escapeHtml(s) {
        return s.replace(/[&<>"']/g, c => ({
          '&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'
        }[c]));
      }
    })();
    </script>
  </aside>
</div>
{% endblock %}