{% extends "base.html" %}
{% block body_class %}themed-bg{% endblock %}

{% block content %}
<div class="container">
  <h1 class="page-title">Statistics</h1>

  <!-- Totals -->
  <div class="card" style="padding:16px; margin-bottom:16px;">
    <div class="meta-grid">
      <div>
        <div class="meta-label">Total Illustrations</div>
        <div class="subject-title" style="margin:0">{{ total }}</div>
      </div>
      <div>
        <div class="meta-label">Added in last 30 days</div>
        <div class="subject-title" style="margin:0">{{ last30 }}</div>
      </div>
      <div>
        <div class="meta-label">Added in last 365 days</div>
        <div class="subject-title" style="margin:0">{{ last365 }}</div>
      </div>
    </div>
  </div>

  <!-- Sparkline (simple bars) -->
  <div class="card" style="padding:16px; margin-bottom:16px;">
    <div class="meta-label">Adds by Month (last 12)</div>
    <div style="display:flex; align-items:flex-end; gap:6px; height:140px; margin-top:8px;">
      {% for label, value, height in heights %}
        <div title="{{ label }} = {{ value }}"
             style="width:22px; height:{{ height }}px; background:#cfe3f6; border:1px solid #bcd4ee; border-radius:6px;"></div>
      {% endfor %}
    </div>
    <div class="small muted" style="margin-top:6px;">
      {% for label, value in series %}{% if not forloop.last %}{{ label }} · {% else %}{{ label }}{% endif %}{% endfor %}
    </div>
  </div>

  <!-- Top subjects (clickable) -->
  <div class="card" style="padding:16px; margin-bottom:16px;">
    <div class="meta-label">Top Subjects</div>
    <div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:8px;">
      {% for s in top_subjects %}
        <a
          class="chip chip-muted"
          href="{% url 'search' %}?q={{ s.name|urlencode }}&subject=on"
          title="Search by subject: {{ s.name }}"
        >
          {{ s.name }} ({{ s.count }})
        </a>
      {% empty %}
        <span class="muted">No subjects.</span>
      {% endfor %}
    </div>
  </div>

  <!-- Scripture usage -->
  <div class="card" style="padding:16px; margin-bottom:16px;">
    <h3 style="margin:0 0 10px;">Scripture Usage</h3>
    <div class="chip" style="margin-bottom:10px;"><strong>Avg. refs per scripture-bearing entry:</strong>&nbsp;{{ avg_refs_per_entry }}</div>

    <div style="display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px;">
      <div>
        <h4 style="margin:0 0 6px;">Top 10 Books</h4>
        <ol class="small" style="margin:0; padding-left:18px;">
          {% for book, cnt in top_books %}
            <li>
              <a
                href="{% url 'search' %}?q={{ book|urlencode }}&scripture_raw=on"
                title="Search scripture field for book: {{ book }}"
              >
                <strong>{{ book }}</strong>
              </a>
              — {{ cnt }}
            </li>
          {% empty %}
            <li class="muted">No data yet.</li>
          {% endfor %}
        </ol>
      </div>
      <div>
        <h4 style="margin:0 0 6px;">Top 10 Scriptures</h4>
        <ol class="small" style="margin:0; padding-left:18px;">
          {% for ref, cnt in top_refs %}
            <li>
              <a
                href="{% url 'search' %}?q={{ ref|urlencode }}&scripture_raw=on"
                title="Search scripture field for: {{ ref }}"
              >
                <strong>{{ ref }}</strong>
              </a>
              — {{ cnt }}
            </li>
          {% empty %}
            <li class="muted">No data yet.</li>
          {% endfor %}
        </ol>
      </div>
    </div>
  </div>

  <!-- Maintenance tools (collapsible like the search help) -->
  <div class="card" style="padding:16px; margin-bottom:24px;">
    <details class="tools-details">
      <summary class="tools-summary">
        🛠️ Maintenance Tools
      </summary>

      <div class="tools-grid">
        <!-- Scripture Normalizer -->
        <div class="tool">
          <h4>Scripture Normalizer</h4>
          <p class="small muted">
            Normalize scripture references (abbreviations, separators, and repeat book names where needed).
          </p>
          <div class="tool-actions">
            <form method="get" action="{% url 'normalize_scripture' %}">
              <input type="number" min="0" name="limit" placeholder="Preview limit (optional)"
                     class="tool-input">
              <button class="btn btn-secondary">Preview (dry-run)</button>
            </form>

            {% if user.is_authenticated and user.is_staff %}
            <form method="post" action="{% url 'normalize_scripture' %}">
              {% csrf_token %}
              <button class="btn btn-danger"
                      onclick="return confirm('Apply normalization to ALL entries? This will modify scripture_raw fields.');">
                Apply to all
              </button>
            </form>
            {% endif %}
          </div>
        </div>

        <!-- Source Normalizer -->
        <div class="tool">
          <h4>Source Normalizer</h4>
          <p class="small muted">
            Convert Watchtower/Awake!/Yearbook/KM references into WOL short-codes (e.g., <code>w13 3/15 p.14</code>).
            Non-JW sources are left unchanged.
          </p>
          <div class="tool-actions">
            <form method="get" action="{% url 'normalize_source' %}">
              <input type="number" min="0" name="limit" placeholder="Preview limit (optional)"
                     class="tool-input">
              <button class="btn btn-secondary">Preview (dry-run)</button>
            </form>

            {% if user.is_authenticated and user.is_staff %}
            <form method="post" action="{% url 'normalize_source' %}">
              {% csrf_token %}
              <button class="btn btn-danger"
                      onclick="return confirm('Apply normalization to all entries? This cannot be undone. Make a backup first.')">
                Apply to all
              </button>
            </form>
            {% endif %}
          </div>
        </div>

        <!-- Subject Normalizer (NEW) -->
        <div class="tool">
          <h4>Subject Normalizer</h4>
          <p class="small muted">
            Unify delimiters (semicolons, dashes, slashes, etc.) into commas and trim spacing.
            Preserves multi-word subjects. Most entries are already correct—this avoids over-splitting.
          </p>
          <div class="tool-actions">
            <form method="get" action="{% url 'normalize_subjects' %}">
              <input type="number" min="0" name="limit" placeholder="Preview limit (optional)"
                     class="tool-input">
              <button class="btn btn-secondary">Preview (dry-run)</button>
            </form>

            {% if user.is_authenticated and user.is_staff %}
            <form method="post" action="{% url 'normalize_subjects' %}">
              {% csrf_token %}
              <button class="btn btn-danger"
                      onclick="return confirm('Apply subject normalization to all entries? This will modify subject fields. Make a backup first.')">
                Apply to all
              </button>
            </form>
            {% endif %}
          </div>
        </div>
      </div>

      <div class="small muted" style="margin-top:10px;">
        Tip: add <code>?limit=1000</code> on the preview to test against a subset before applying globally.
      </div>
    </details>
  </div>
</div>

<!-- Minimal styles for the collapsible tools, matching your existing look -->
<style>
  .tools-details { margin-top: 4px; }
  .tools-summary {
    display:inline-flex; align-items:center; gap:8px;
    padding:8px 12px; border-radius:10px;
    background: var(--btn-bg); border:1px solid var(--btn-border);
    color: var(--nav-ink); cursor:pointer; user-select:none;
  }
  .tools-summary:hover { background: var(--btn-hover); }
  .tools-details[open] .tools-summary { background:#fff; }

  .tools-grid {
    margin-top:12px;
    display:grid; gap:16px;
    grid-template-columns: repeat( auto-fit, minmax(260px, 1fr) );
  }
  .tool { border:1px solid var(--nav-border); border-radius:12px; padding:12px; background:#fff; }
  .tool h4 { margin:0 0 6px; }
  .tool-actions { display:flex; flex-wrap:wrap; gap:8px; margin-top:8px; }
  .tool-input {
    border:1px solid var(--nav-border);
    border-radius:8px; padding:6px 8px; min-width: 190px;
  }
</style>
{% endblock %}