[trends] Initial trends app

vrobbler/apps/trends/views.py

@@ -0,0 +1,89 @@
+from django.contrib.auth.mixins import LoginRequiredMixin
+from django.views.generic import TemplateView
+
+from trends.models import TrendResult
+from trends.trends import TREND_REGISTRY
+
+TREND_METADATA = {
+    "concurrent-listening": {
+        "title": "Concurrent Listening",
+        "description": "What music were you listening to while on trails or at locations?",
+        "icon": "🎧",
+    },
+    "concurrent-reading": {
+        "title": "Concurrent Reading",
+        "description": "What music did you listen to while reading books?",
+        "icon": "📖",
+    },
+    "reading-pace-vs-activity": {
+        "title": "Reading Pace vs Music",
+        "description": "Compare how long you read per session with and without concurrent music.",
+        "icon": "📊",
+    },
+    "trending-up": {
+        "title": "Trending Media Types",
+        "description": "Which media types have you been consuming more or less of recently?",
+        "icon": "📈",
+    },
+}
+
+
+class TrendListView(LoginRequiredMixin, TemplateView):
+    template_name = "trends/trend_list.html"
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(**kwargs)
+        results = {
+            r.trend_slug: r
+            for r in TrendResult.objects.filter(
+                user=self.request.user
+            )
+        }
+        trends = []
+        for slug in TREND_REGISTRY:
+            meta = TREND_METADATA.get(slug, {})
+            result = results.get(slug)
+            trends.append({
+                "slug": slug,
+                "title": meta.get("title", slug),
+                "description": meta.get("description", ""),
+                "icon": meta.get("icon", ""),
+                "computed_at": result.computed_at if result else None,
+                "has_data": result is not None,
+            })
+        ctx["trends"] = trends
+        return ctx
+
+
+class TrendDetailView(LoginRequiredMixin, TemplateView):
+    template_name = "trends/trend_detail.html"
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data(**kwargs)
+        slug = kwargs["trend_slug"]
+
+        if slug not in TREND_REGISTRY:
+            ctx["trend_not_found"] = True
+            return ctx
+
+        meta = TREND_METADATA.get(slug, {})
+        ctx["trend"] = {
+            "slug": slug,
+            "title": meta.get("title", slug),
+            "description": meta.get("description", ""),
+            "icon": meta.get("icon", ""),
+        }
+
+        result = TrendResult.objects.filter(
+            user=self.request.user,
+            trend_slug=slug,
+        ).first()
+
+        if result:
+            ctx["computed_at"] = result.computed_at
+            ctx["data"] = result.data
+        else:
+            ctx["computed_at"] = None
+            ctx["data"] = None
+
+        return ctx