{# Merge confirmation (issue #54) — the exact, SERVER-computed effect of the
   proposed merge, shown before anything is written. Swapped into #merge-confirm
   by the preview POST; the Confirm form applies it and swaps the whole #labels
   list. `expected_json` carries each label's current effective-ruling id so the
   apply route can reject a stale confirm (409) instead of silently overriding a
   decision the operator never saw. #}
<div class="merge-confirm-body">
  <h3>
    Treat {{ preview.labels|length }} labels as the same speaker in this recording
  </h3>
  <p>
    {% if target_speaker %}
      → assign all to existing speaker <strong>{{ target_speaker.display_name }}</strong>.
    {% elif target_name %}
      → enroll a new speaker <strong>“{{ target_name }}”</strong> and assign all to it.
    {% endif %}
  </p>
  {% if preview.distinct_roster_speakers %}
  <p class="muted">
    These labels currently map to two different roster identities. This only
    changes attribution <em>in this recording</em> — it does <strong>not</strong>
    merge those identities on the roster. If they are the same person everywhere,
    merge them on the <a href="/speakers">Speakers</a> page.
  </p>
  {% endif %}
  <ul class="merge-impact">
    {% for impact in preview.labels %}
    <li class="{% set idx = palette.get(impact.label) %}{% if idx is not none %}spk-{{ idx }}{% endif %}">
      <strong>{{ impact.label }}</strong>
      — {{ impact.turn_count }} turns, {{ "%.0f"|format(impact.total_seconds) }}s,
      {{ impact.segment_count }} transcript segment{{ "" if impact.segment_count == 1 else "s" }}
      {% if impact.current_speaker_name %}
        <span class="muted">(currently: {{ impact.current_speaker_name }})</span>
      {% elif impact.resolution.value == "human_exclude" %}
        <span class="muted">(currently: excluded)</span>
      {% elif impact.resolution.value == "human_unknown" %}
        <span class="muted">(currently: unknown)</span>
      {% endif %}
    </li>
    {% endfor %}
  </ul>
  <p class="muted">
    Affects {{ preview.total_turns }} diarization turns and
    {{ preview.total_segments }} transcript segments in this recording.
    Reversible — you can re-rule any label afterwards.
  </p>
  <form class="inline" method="post" action="/review/{{ run.id }}/merge"
        hx-post="/review/{{ run.id }}/merge"
        hx-target="#labels" hx-swap="innerHTML">
    <input type="hidden" name="token" value="{{ token }}">
    <input type="hidden" name="nonce" value="{{ nonce() }}">
    {% for impact in preview.labels %}
    <input type="hidden" name="labels" value="{{ impact.label }}">
    {% endfor %}
    {% if target_speaker %}
    <input type="hidden" name="speaker_id" value="{{ target_speaker.id }}">
    {% elif target_name %}
    <input type="hidden" name="display_name" value="{{ target_name }}">
    {% endif %}
    <input type="hidden" name="expected" value="{{ expected_json }}">
    <button type="submit" class="primary">Confirm merge</button>
    <button type="button" class="secondary"
            onclick="this.closest('#merge-confirm').innerHTML=''">Cancel</button>
  </form>
</div>