Add HowLongToBeat estimates to game cards

- Fetch HLTB main/extra/completionist hours when a game item is saved
- Re-fetch only when name or category changes on edit
- Steam imports also fetch HLTB for each selected game
- Cards show compact HLTB row: "HLTB: 40h · +extra 60h · 100% 100h"
- Edit form shows HLTB breakdown as a hint next to Total hours field

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backlogger/hltb.py

@@ -0,0 +1,48 @@
+from howlongtobeatpy import HowLongToBeat
+
+
+def _h(val):
+    """Return float hours if valid, else None."""
+    try:
+        v = float(val)
+        return v if v > 0 else None
+    except (TypeError, ValueError):
+        return None
+
+
+def fetch(game_name):
+    """
+    Search HowLongToBeat for game_name.
+    Returns dict with keys 'main', 'extra', 'complete' (each float or None),
+    or None if nothing found / on any error.
+    """
+    try:
+        results = HowLongToBeat().search(game_name)
+    except Exception:
+        return None
+
+    if not results:
+        return None
+
+    best = max(results, key=lambda r: r.similarity)
+    if best.similarity < 0.4:
+        return None
+
+    return {
+        'main': _h(best.main_story),
+        'extra': _h(best.main_extra),
+        'complete': _h(best.completionist),
+    }
+
+
+def apply_to_item(item):
+    """Fetch HLTB data and save it onto item. Silently does nothing on failure."""
+    if item.category != 'games' or not item.name:
+        return
+    data = fetch(item.name)
+    if data is None:
+        return
+    item.hltb_main = data['main']
+    item.hltb_extra = data['extra']
+    item.hltb_complete = data['complete']
+    item.save(update_fields=['hltb_main', 'hltb_extra', 'hltb_complete'])

backlogger/migrations/0004_item_hltb_fields.py

@@ -0,0 +1,26 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('backlogger', '0003_assign_existing_items_to_first_user'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='item',
+            name='hltb_main',
+            field=models.FloatField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='item',
+            name='hltb_extra',
+            field=models.FloatField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='item',
+            name='hltb_complete',
+            field=models.FloatField(blank=True, null=True),
+        ),
+    ]

backlogger/models.py

@@ -35,6 +35,11 @@ class Item(models.Model):
     watched = models.BooleanField(null=True, blank=True)
     duration_minutes = models.IntegerField(null=True, blank=True)
 
+    # HowLongToBeat estimates (games only)
+    hltb_main = models.FloatField(null=True, blank=True)
+    hltb_extra = models.FloatField(null=True, blank=True)
+    hltb_complete = models.FloatField(null=True, blank=True)
+
     class Meta:
         ordering = ['-favorite', 'name']
 

backlogger/templates/backlogger/item_form.html

@@ -188,6 +188,14 @@
             <label>Total hours <span class="optional">optional</span></label>
             {{ form.total_hours }}
             {{ form.total_hours.errors }}
+            {% if item.hltb_main or item.hltb_extra or item.hltb_complete %}
+            <div style="margin-top:0.4rem;font-size:0.72rem;color:#475569;line-height:1.6">
+              HowLongToBeat:
+              {% if item.hltb_main %}<span style="color:#64748b">Main {{ item.hltb_main|floatformat:0 }}h</span>{% endif %}
+              {% if item.hltb_extra %}<span style="color:#64748b"> · +Extra {{ item.hltb_extra|floatformat:0 }}h</span>{% endif %}
+              {% if item.hltb_complete %}<span style="color:#64748b"> · 100% {{ item.hltb_complete|floatformat:0 }}h</span>{% endif %}
+            </div>
+            {% endif %}
           </div>
         </div>
       </div>

backlogger/templates/backlogger/list.html

@@ -213,6 +213,11 @@
           {% if item.hours_played is not None %}
             {{ item.hours_played|floatformat:1 }}h played{% if item.total_hours %} / {{ item.total_hours|floatformat:0 }}h total{% endif %}
           {% endif %}
+          {% if item.hltb_main or item.hltb_extra or item.hltb_complete %}
+          <div style="margin-top:0.3rem;font-size:0.72rem;color:#475569">
+            HLTB:{% if item.hltb_main %} {{ item.hltb_main|floatformat:0 }}h{% endif %}{% if item.hltb_extra %} · +extra {{ item.hltb_extra|floatformat:0 }}h{% endif %}{% if item.hltb_complete %} · 100% {{ item.hltb_complete|floatformat:0 }}h{% endif %}
+          </div>
+          {% endif %}
         {% elif item.category == 'books' %}
           {% if item.pages_read is not None %}
             {{ item.pages_read }} pages{% if item.total_pages %} / {{ item.total_pages }} total{% endif %}

backlogger/views.py

@@ -5,6 +5,7 @@ from django.urls import reverse
 from .models import Item
 from .forms import ItemForm, SignupForm
 from . import steam as steam_api
+from . import hltb as hltb_api
 
 
 def signup(request):
@@ -56,6 +57,7 @@ def item_add(request):
             item = form.save(commit=False)
             item.user = request.user
             item.save()
+            hltb_api.apply_to_item(item)
             return redirect('backlogger:list')
     else:
         form = ItemForm()
@@ -68,7 +70,9 @@ def item_edit(request, pk):
     if request.method == 'POST':
         form = ItemForm(request.POST, instance=item)
         if form.is_valid():
-            form.save()
+            updated = form.save()
+            if 'name' in form.changed_data or 'category' in form.changed_data:
+                hltb_api.apply_to_item(updated)
             return redirect('backlogger:list')
     else:
         form = ItemForm(instance=item)
@@ -139,13 +143,14 @@ def steam_import(request):
             continue
         hours = game['hours']
         progress = min(100.0, hours) if hours > 0 else 0.0
-        Item.objects.create(
+        item = Item.objects.create(
             user=request.user,
             category=Item.GAMES,
             name=game['name'],
             hours_played=hours,
             progress_percent=progress,
         )
+        hltb_api.apply_to_item(item)
         imported += 1
 
     del request.session['steam_games']