Allowing unauthenticated users to see scopes

app/main.py

@@ -49,7 +49,7 @@ def create_app() -> FastAPI:
         # Preserve the originally requested URL so we can return there after
         # login. Only meaningful for GET navigations (the ones users deep-link).
         login_url = "/login"
-        if request.method == "GET" and request.url.path not in ("/", "/login"):
+        if request.method == "GET" and request.url.path != "/login":
             target = request.url.path
             if request.url.query:
                 target += "?" + request.url.query

app/services/scope_guide.py

@@ -29,6 +29,7 @@ async def build(
     scope_model_id: int | None = None,
     sub_part_type_id: int | None = None,
     fits_part_type_id: int | None = None,
+    only_exact: bool = False,
 ) -> dict:
     """Return the context for ``scopes.html``.
 
@@ -40,6 +41,10 @@ async def build(
     themselves — this always returns the full filtered set, since
     ``fits_part_type_id`` is a post-filter that can't be pushed into the DB query.
 
+    ``only_exact`` drops ``possible`` fits entirely, keeping only user-confirmed
+    ``exact`` ones — used for anonymous visitors, who shouldn't see unconfirmed
+    fit candidates.
+
     Shape::
 
         {
@@ -80,6 +85,8 @@ async def build(
     fits = await fit_crud.list_for_parts(
         db, list(scope_ids), exclude_label=FitLabel.NONE
     )
+    if only_exact:
+        fits = [f for f in fits if f.label == FitLabel.EXACT]
 
     # Resolve the "other" (non-scope) part on each fit in a single batched query.
     other_ids: set[int] = set()

app/templates/_nav.html

@@ -1,11 +1,12 @@
-{% set su = user.is_superuser %}
-{% set p = user.permissions %}
+{% set su = user.is_superuser if user else False %}
+{% set p = user.permissions if user else [] %}
 {% set can_admin = su or "users:read" in p or "roles:read" in p or "audit_log:read" in p %}
 {% set can_connections = su or "clamp_connections:read" in p or "iso_threads:read" in p or "static_connections:read" in p or "unc_threads:read" in p %}
 {% set can_labels = su or "attachment_point_names:read" in p or "manufacturers:read" in p or "part_colours:read" in p or "part_types:read" in p or "scope_models:read" in p or "sub_part_types:read" in p %}
 {% set can_database = su or "imported_parts:read" in p or "augmented_parts:read" in p or "attachment_points:read" in p %}
 {% set can_parts = can_connections or can_labels or can_database %}
-{% set can_scopes = su or ("augmented_parts:read" in p and "fits:read" in p) %}
+{# /scopes is public, so anonymous visitors see the link too; logged-in users still need the read perms. #}
+{% set can_scopes = (not user) or su or ("augmented_parts:read" in p and "fits:read" in p) %}
 
 {# ── SVG icon sprite ───────────────────────────────────────────────────────── #}
 <svg xmlns="http://www.w3.org/2000/svg" style="display:none">
@@ -232,8 +233,12 @@
 
     <a href="/docs" target="_blank">{{ icon("book-open") }} API docs</a>
   </nav>
+  {% if user %}
   <form method="post" action="/logout" class="logout">
     <span class="muted">{{ user.email }}</span>
     <button type="submit" class="btn btn-ghost">Sign out</button>
   </form>
+  {% else %}
+  <a href="/login" class="btn btn-ghost">Sign in</a>
+  {% endif %}
 </header>

app/templates/scopes.html

@@ -7,7 +7,8 @@
   <p class="muted">
     Every scope on record, with the accessories that fit it. Each part-type
     column lists matching parts; <span class="fit-badge fit-badge-exact">Exact</span>
-    is a confirmed fit, <span class="fit-badge fit-badge-possible">Possible</span> a candidate.
+    is a confirmed fit{% if not only_exact %}, <span class="fit-badge fit-badge-possible">Possible</span> a candidate{% endif %}.
+    {% if only_exact %}<a href="/login">Sign in</a> to also see unconfirmed candidate fits.{% endif %}
   </p>
 
   <div class="filter-bar">

app/web/pages.py

@@ -7,7 +7,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.core.config import settings
 from app.core.database import get_db
 from app.crud import user as user_crud
-from app.deps import get_current_web_user
+from app.deps import get_optional_web_user
 from app.models.user import User
 from app.services import ldap as ldap_service
 from app.services.auth import issue_token_pair
@@ -46,8 +46,12 @@ def _set_auth_cookie(response: Response, access_token: str) -> None:
 @router.get("/", response_class=HTMLResponse)
 async def dashboard(
     request: Request,
-    user: User = Depends(get_current_web_user),
+    user: User | None = Depends(get_optional_web_user),
 ):
+    # Anonymous visitors land on the public Scopes page instead of being
+    # bounced to login; the dashboard itself requires an account.
+    if user is None:
+        return RedirectResponse(url="/scopes", status_code=status.HTTP_302_FOUND)
     return templates.TemplateResponse(request, "dashboard.html", {"user": user})
 
 

app/web/scopes.py

@@ -5,7 +5,7 @@ non-Scope part type listing the accessories that fit each scope. Supports HTMX
 search/filter over scope attributes and required accessory fits.
 """
 
-from fastapi import APIRouter, Depends, Form, Request
+from fastapi import APIRouter, Depends, Form, HTTPException, Request, status
 from fastapi.responses import HTMLResponse
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -16,6 +16,7 @@ from app.crud import manufacturer as manufacturer_crud
 from app.crud import part_type as part_type_crud
 from app.crud import scope_model as scope_model_crud
 from app.crud import sub_part_type as sub_part_type_crud
+from app.deps import get_optional_web_user
 from app.models.user import User
 from app.services import scope_guide as scope_guide_service
 from app.web.admin import web_require
@@ -27,17 +28,39 @@ router = APIRouter(include_in_schema=False)
 _PAGE_SIZE = 50
 _TABLE_TARGET = "#scopes-table-card"
 _FILTER_PATH = "/scopes/filter"
+_REQUIRED_PERMS = {"augmented_parts:read", "fits:read"}
 
 
 def _to_int(value: str) -> int | None:
     return int(value) if value.strip() else None
 
 
-def _can_write_scopes(user: User) -> bool:
-    return user.is_superuser or "augmented_parts:write" in user.permissions
+def _can_write_scopes(user: User | None) -> bool:
+    return user is not None and (
+        user.is_superuser or "augmented_parts:write" in user.permissions
+    )
 
 
-async def _build(db: AsyncSession, filters: dict) -> dict:
+async def _optional_scopes_user(
+    user: User | None = Depends(get_optional_web_user),
+) -> User | None:
+    """Anyone may view the scopes page; logged-in users still need the read perms.
+
+    Anonymous visitors are allowed through (and get an exact-fits-only view —
+    see ``only_exact`` in ``scope_guide.build``); a logged-in user missing the
+    permissions gets the usual 403, matching ``web_require``'s behaviour.
+    """
+    if user is not None and not (
+        user.is_superuser or _REQUIRED_PERMS.issubset(user.permissions)
+    ):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="You do not have access to this page.",
+        )
+    return user
+
+
+async def _build(db: AsyncSession, filters: dict, only_exact: bool = False) -> dict:
     """Run the guide query for the given raw (string) filter values.
 
     Always returns the full matching row set — pagination is applied by the
@@ -50,17 +73,22 @@ async def _build(db: AsyncSession, filters: dict) -> dict:
         scope_model_id=_to_int(filters["scope_model_id"]),
         sub_part_type_id=_to_int(filters["sub_part_type_id"]),
         fits_part_type_id=_to_int(filters["fits_part_type_id"]),
+        only_exact=only_exact,
     )
 
 
 async def _paginated_guide(
-    db: AsyncSession, filters: dict, page: int, page_size: int
+    db: AsyncSession,
+    filters: dict,
+    page: int,
+    page_size: int,
+    only_exact: bool = False,
 ) -> tuple[dict, dict]:
     """Run the guide query, then slice its rows to the requested page.
 
     Returns ``(guide, pagination)`` where ``guide["rows"]`` is already sliced.
     """
-    guide = await _build(db, filters)
+    guide = await _build(db, filters, only_exact=only_exact)
     all_rows = guide["rows"]
     pagination = paginate(
         _FILTER_PATH, filters, page, page_size, len(all_rows), _TABLE_TARGET
@@ -95,7 +123,7 @@ async def scopes_page(
     sub_part_type_id: str = "",
     fits_part_type_id: str = "",
     db: AsyncSession = Depends(get_db),
-    user: User = Depends(web_require("augmented_parts:read", "fits:read")),
+    user: User | None = Depends(_optional_scopes_user),
 ):
     filters = {
         "description": description,
@@ -104,7 +132,10 @@ async def scopes_page(
         "sub_part_type_id": sub_part_type_id,
         "fits_part_type_id": fits_part_type_id,
     }
-    guide, pagination = await _paginated_guide(db, filters, 1, _PAGE_SIZE)
+    only_exact = user is None
+    guide, pagination = await _paginated_guide(
+        db, filters, 1, _PAGE_SIZE, only_exact=only_exact
+    )
     return templates.TemplateResponse(
         request,
         "scopes.html",
@@ -112,6 +143,7 @@ async def scopes_page(
             "user": user,
             "filters": filters,
             "can_write_scopes": _can_write_scopes(user),
+            "only_exact": only_exact,
             "pagination": pagination,
             **guide,
             **(await _filter_options(db)),
@@ -130,7 +162,7 @@ async def scopes_filter(
     page: int = 1,
     page_size: int = _PAGE_SIZE,
     db: AsyncSession = Depends(get_db),
-    user: User = Depends(web_require("augmented_parts:read", "fits:read")),
+    user: User | None = Depends(_optional_scopes_user),
 ):
     filters = {
         "description": description,
@@ -139,7 +171,10 @@ async def scopes_filter(
         "sub_part_type_id": sub_part_type_id,
         "fits_part_type_id": fits_part_type_id,
     }
-    guide, pagination = await _paginated_guide(db, filters, page, page_size)
+    only_exact = user is None
+    guide, pagination = await _paginated_guide(
+        db, filters, page, page_size, only_exact=only_exact
+    )
     return templates.TemplateResponse(
         request,
         "_scopes_table_card.html",