Add authentication, public profile, and infinite scroll

- Implement session-based auth with argon2 password hashing
- Add login form and logout button in nav
- Create public /tyler profile page with curated stats
- Implement infinite scroll for film lists (load 20 at a time)
- Add lazy loading for poster images
- Fix profile page CSS to use dark theme variables
- Use consistent star character (✦) across all pages
- Add /films/partial endpoint for pagination

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

1 files changed, 53 insertions, 6 deletions

diff --git a/routers/films.py b/routers/films.py
index fc087b1..4bb7cc9 100644
--- a/routers/films.py
+++ b/routers/films.py
@@ -176,6 +176,17 @@ def _notice_context(
     }
 
 
+def _get_shelf_query(db: Session, shelf: str):
+    """Get a query for films on a shelf, ordered appropriately."""
+    query = db.query(Film).filter(Film.shelf == shelf)
+    if shelf == "diary":
+        return query.order_by(Film.date_watched.desc(), Film.created_at.desc(), Film.id.desc())
+    elif shelf == "queue":
+        return query.order_by(Film.created_at.desc(), Film.id.desc())
+    else:  # abandoned
+        return query.order_by(Film.updated_at.desc(), Film.created_at.desc(), Film.id.desc())
+
+
 def _group_films_by_month(films: list[Film]) -> list[dict]:
     def month_key(film: Film) -> str:
         return film.date_watched.strftime("%B %Y") if film.date_watched else "Unknown"
@@ -192,15 +203,14 @@ def _render_shelf(
     db: Session,
     notices: dict,
 ):
-    query = db.query(Film).filter(Film.shelf == shelf)
+    query = _get_shelf_query(db, shelf)
+    total_films = query.count()
+    films = query.limit(20).all()
+    has_more = total_films > 20
+
     if shelf == "diary":
-        films = query.order_by(Film.date_watched.desc(), Film.created_at.desc(), Film.id.desc()).all()
         grouped_films = _group_films_by_month(films)
-    elif shelf == "queue":
-        films = query.order_by(Film.created_at.desc(), Film.id.desc()).all()
-        grouped_films = None
     else:
-        films = query.order_by(Film.updated_at.desc(), Film.created_at.desc(), Film.id.desc()).all()
         grouped_films = None
 
     return templates.TemplateResponse(
@@ -212,6 +222,8 @@ def _render_shelf(
             "grouped_films": grouped_films,
             "active_shelf": shelf,
             "shelf_meta": SHELF_META[shelf],
+            "total_films": total_films,
+            "has_more": has_more,
             **notices,
         },
     )
@@ -361,6 +373,41 @@ async def _film_tmdb_context(film: Film) -> dict | None:
     return context
 
 
+@router.get("/films/partial")
+def get_films_partial(
+    request: Request,
+    shelf: str = Query("diary"),
+    offset: int = Query(0),
+    limit: int = Query(20),
+    db: Session = Depends(get_db),
+):
+    """Returns partial HTML for pagination. Used by infinite scroll."""
+    if shelf not in ALLOWED_SHELVES:
+        raise HTTPException(status_code=400, detail="Invalid shelf.")
+
+    query = _get_shelf_query(db, shelf)
+    total = query.count()
+    films = query.offset(offset).limit(limit).all()
+    has_more = (offset + limit) < total
+
+    if shelf == "diary":
+        grouped_films = _group_films_by_month(films)
+    else:
+        grouped_films = None
+
+    from fastapi.responses import HTMLResponse
+    html = templates.get_template("_feed_partial.html").render(
+        request=request,
+        films=films,
+        grouped_films=grouped_films,
+        active_shelf=shelf,
+    )
+
+    response = HTMLResponse(html)
+    response.headers["X-Has-More"] = "true" if has_more else "false"
+    return response
+
+
 @router.get("/films/{film_id}")
 async def film_detail(film_id: int, request: Request, db: Session = Depends(get_db)):
     film = _get_film_or_404(db, film_id)