{% extends "base.html" %}
{% block title %}Snapshots — abn-combined{% endblock %}
{% block content %}
<div class="mb-4">
  <h1 class="h2">Snapshots</h1>
  <p class="text-muted">Share the dataset with another machine: export a snapshot file here, import it there.
     Import merges with incoming-wins on conflicts, never deletes local data, and backs up
     the database first.</p>
</div>

{% if error %}
<div class="alert alert-danger" role="alert">
  <strong>Import rejected:</strong> {{ error }}
</div>
{% endif %}

<div class="row g-3 mb-4">
  {# ── Export card ────────────────────────────────────────────────────── #}
  <div class="col-md-6">
    <div class="card h-100">
      <div class="card-header bg-body-secondary">
        <h5 class="mb-0">Export</h5>
      </div>
      <div class="card-body">
        <form method="post" action="/snapshots/export">
          <button type="submit" class="btn btn-primary">Export snapshot</button>
        </form>

        {% if exports %}
        <div class="table-responsive mt-3">
          <table class="table table-sm table-hover">
            <thead class="table-light">
              <tr>
                <th>File</th>
                <th>Date</th>
                <th>Size</th>
                <th></th>
              </tr>
            </thead>
            <tbody>
              {% for e in exports %}
              <tr>
                <td><code class="text-muted">{{ e.name }}</code></td>
                <td>{{ e.modified.strftime('%Y-%m-%d %H:%M:%S') }}</td>
                <td>{{ '%.1f'|format(e.size / 1024) }} KB</td>
                <td class="text-end">
                  <a href="/snapshots/files/{{ e.name }}" download class="btn btn-sm btn-outline-secondary">
                    <i class="bi bi-download"></i> Download
                  </a>
                </td>
              </tr>
              {% endfor %}
            </tbody>
          </table>
        </div>
        {% else %}
        <p class="text-muted small">No exports yet.</p>
        {% endif %}
      </div>
    </div>
  </div>

  {# ── Import card ────────────────────────────────────────────────────── #}
  <div class="col-md-6">
    <div class="card h-100">
      <div class="card-header bg-body-secondary">
        <h5 class="mb-0">Import</h5>
      </div>
      <div class="card-body">
        <p class="text-muted small mb-3">Upload a snapshot exported by abn-combined. Records that exist on both sides are
           overwritten with the snapshot's values (including manual categorizations); everything
           overwritten is listed in the import report. Local-only records are kept.</p>

        <form method="post" action="/snapshots/import" enctype="multipart/form-data">
          <div class="mb-3">
            <label for="snapshot-file" class="form-label">Snapshot file</label>
            <input type="file" id="snapshot-file" class="form-control" name="file"
                   accept=".gz,.json.gz,application/gzip" required>
          </div>
          <button type="submit" class="btn btn-primary">Import snapshot</button>
        </form>
      </div>
    </div>
  </div>
</div>

{# ── Import reports section ─────────────────────────────────────────── #}
<div class="card">
  <div class="card-header bg-body-secondary">
    <h5 class="mb-0">Import reports</h5>
  </div>
  <div class="card-body">
    {% if imports %}
    <div class="d-flex flex-column gap-3">
      {% for imp in imports %}
      {% include "_snapshot_import_report.html" %}
      {% endfor %}
    </div>
    {% else %}
    <p class="text-muted small">No imports yet.</p>
    {% endif %}
  </div>
</div>
{% endblock %}