feat: add paging to package depends & required by

This patch does not include a javascript implementating, but
provides a pure HTML/HTTP method of paging through these lists.

Also fixes erroneous limiting. We now use a hardcoded limit of 20
by default.
Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/packages/util.py

@@ -214,7 +214,7 @@ def query_notified(query: List[models.Package],
     return output
 
 
-def pkg_required(pkgname: str, provides: List[str], limit: int) \
+def pkg_required(pkgname: str, provides: List[str]) \
         -> List[PackageDependency]:
     """
     Get dependencies that match a string in `[pkgname] + provides`.
@@ -227,8 +227,8 @@ def pkg_required(pkgname: str, provides: List[str], limit: int) \
     targets = set([pkgname] + provides)
     query = db.query(PackageDependency).join(Package).filter(
         PackageDependency.DepName.in_(targets)
-    ).order_by(Package.Name.asc()).limit(limit)
-    return query.all()
+    ).order_by(Package.Name.asc())
+    return query
 
 
 @register_filter("source_uri")

aurweb/pkgbase/util.py

@@ -11,16 +11,25 @@ from aurweb.models.package_request import PENDING_ID, PackageRequest
 from aurweb.models.package_vote import PackageVote
 from aurweb.scripts import notify
 from aurweb.templates import make_context as _make_context
+from aurweb.templates import make_variable_context as _make_variable_context
 
 
-def make_context(request: Request, pkgbase: PackageBase) -> Dict[str, Any]:
+async def make_variable_context(request: Request, pkgbase: PackageBase) \
+        -> Dict[str, Any]:
+    ctx = await _make_variable_context(request, pkgbase.Name)
+    return make_context(request, pkgbase, ctx)
+
+
+def make_context(request: Request, pkgbase: PackageBase,
+                 context: Dict[str, Any] = None) -> Dict[str, Any]:
     """ Make a basic context for package or pkgbase.
 
     :param request: FastAPI request
     :param pkgbase: PackageBase instance
     :return: A pkgbase context without specific differences
     """
-    context = _make_context(request, pkgbase.Name)
+    if not context:
+        context = _make_context(request, pkgbase.Name)
 
     context["git_clone_uri_anon"] = config.get("options", "git_clone_uri_anon")
     context["git_clone_uri_priv"] = config.get("options", "git_clone_uri_priv")

aurweb/routers/packages.py

@@ -2,7 +2,7 @@ from collections import defaultdict
 from http import HTTPStatus
 from typing import Any, Dict, List
 
-from fastapi import APIRouter, Form, Request, Response
+from fastapi import APIRouter, Form, Query, Request, Response
 
 import aurweb.filters  # noqa: F401
 
@@ -33,7 +33,7 @@ async def packages_get(request: Request, context: Dict[str, Any],
     context["O"] = offset
 
     # Limit PP to options.max_search_results
-    max_search_results = aurweb.config.getint("options", "max_search_results")
+    max_search_results = config.getint("options", "max_search_results")
     context["PP"] = per_page = min(per_page, max_search_results)
 
     # Query search by.
@@ -123,7 +123,22 @@ async def packages(request: Request) -> Response:
 
 
 @router.get("/packages/{name}")
-async def package(request: Request, name: str) -> Response:
+async def package(request: Request, name: str,
+                  all_deps: bool = Query(default=False),
+                  all_reqs: bool = Query(default=False)) -> Response:
+    """
+    Get a package by name.
+
+    By default, we limit the number of depends and requires results
+    to 20. To bypass this and load all of them, which should be triggered
+    via a "Show more" link near the limited listing.
+
+    :param name: Package.Name
+    :param all_deps: Boolean indicating whether we should load all depends
+    :param all_reqs: Boolean indicating whether we should load all requires
+    :return: FastAPI Response
+    """
+
     # Get the Package.
     pkg = get_pkg_or_base(name, models.Package)
     pkgbase = pkg.PackageBase
@@ -139,23 +154,41 @@ async def package(request: Request, name: str) -> Response:
             rels_data["r"].append(rel)
 
     # Add our base information.
-    context = pkgbaseutil.make_context(request, pkgbase)
+    context = await pkgbaseutil.make_variable_context(request, pkgbase)
+
+    context.update(
+        {
+            "all_deps": all_deps,
+            "all_reqs": all_reqs
+        }
+    )
+
     context["package"] = pkg
 
     # Package sources.
     context["sources"] = pkg.package_sources.order_by(
         models.PackageSource.Source.asc()).all()
 
+    # Listing metadata.
+    context["max_listing"] = max_listing = 20
+
     # Package dependencies.
-    max_depends = config.getint("options", "max_depends")
-    context["dependencies"] = pkg.package_dependencies.order_by(
+    deps = pkg.package_dependencies.order_by(
         models.PackageDependency.DepTypeID.asc(),
         models.PackageDependency.DepName.asc()
-    ).limit(max_depends).all()
+    )
+    context["depends_count"] = deps.count()
+    if not all_deps:
+        deps = deps.limit(max_listing)
+    context["dependencies"] = deps.all()
 
     # Package requirements (other packages depend on this one).
-    context["required_by"] = pkgutil.pkg_required(
-        pkg.Name, [p.RelName for p in rels_data.get("p", [])], max_depends)
+    reqs = pkgutil.pkg_required(
+        pkg.Name, [p.RelName for p in rels_data.get("p", [])])
+    context["reqs_count"] = reqs.count()
+    if not all_reqs:
+        reqs = reqs.limit(max_listing)
+    context["required_by"] = reqs.all()
 
     context["licenses"] = pkg.package_licenses
 

aurweb/templates.py

@@ -100,6 +100,8 @@ async def make_variable_context(request: Request, title: str, next: str = None):
     for k, v in to_copy.items():
         context[k] = v
 
+    context["q"] = dict(request.query_params)
+
     return context
 
 

po/aurweb.pot

@@ -2338,3 +2338,11 @@ msgstr ""
 #: templates/partials/tu/proposal/details.html
 msgid "assigned"
 msgstr ""
+
+#: templaets/partials/packages/package_metadata.html
+msgid "Show %d more"
+msgstr ""
+
+#: templates/partials/packages/package_metadata.html
+msgid "dependencies"
+msgstr ""

templates/partials/packages/package_metadata.html

 <div id="pkgdeps" class="listing">
-    <h3>{{ "Dependencies" | tr }} ({{ dependencies | length }})</h3>
+    <h3>{{ "Dependencies" | tr }} ({{ depends_count }})</h3>
     <ul id="pkgdepslist">
         {% for dep in dependencies %}
             {# Collect provides for `dep`. #}
@@ -34,11 +34,18 @@
                 {% endif %}
             </li>
         {% endfor %}
+        {% if not all_deps and depends_count > max_listing %}
+            <li>
+                <a href="/packages/{{ package.Name }}?{{ q | extend_query(['all_deps', '1']) | urlencode }}#pkgdeps">
+                    {{ "Show %d more" | tr | format(depends_count - (dependencies | length)) }} {{ "dependencies" | tr }}...
+                </a>
+            </li>
+        {% endif %}
     </ul>
 </div>
 
 <div id="pkgreqs" class="listing">
-    <h3>{{ "Required by" | tr }} ({{ required_by | length }})</h3>
+    <h3>{{ "Required by" | tr }} ({{ reqs_count }})</h3>
     <ul id="pkgreqslist">
         {% for dep in required_by %}
             <li>
@@ -55,6 +62,11 @@
                 <em>{{ dep | dep_extra }}</em>
             </li>
         {% endfor %}
+        {% if not all_reqs and (required_by | length) > max_listing %}
+            <a href="/packages/{{ name }}?{{ q | extend_query(['all_reqs', '1']) | urlencode }}#pkgreqs">
+                {{ "Show %d more" | tr | format(reqs_count - (required_by | length)) }}...
+            </a>
+        {% endif %}
     </ul>
 </div>
 

test/test_packages_routes.py

@@ -276,6 +276,51 @@ def test_package(client: TestClient, package: Package):
     assert conflicts[0].text.strip() == ", ".join(expected)
 
 
+def paged_depends_required(client: TestClient, package: Package):
+    maint = package.PackageBase.Maintainer
+    new_pkgs = []
+
+    with db.begin():
+        # Create 25 new packages that'll be used to depend on our package.
+        for i in range(26):
+            base = db.create(PackageBase, Name=f"new_pkg{i}", Maintainer=maint)
+            new_pkgs.append(db.create(Package, Name=base.Name))
+
+        # Create 25 deps.
+        for i in range(25):
+            create_package_dep(package, f"dep_{i}")
+
+    with db.begin():
+        # Create depends on this package so we get some required by listings.
+        for new_pkg in new_pkgs:
+            create_package_dep(new_pkg, package.Name)
+
+    with client as request:
+        resp = request.get(package_endpoint(package))
+    assert resp.status_code == int(HTTPStatus.OK)
+
+    # Test depends show link.
+    assert "Show 5 more" in resp.text
+
+    # Test required by show more link, we added 26 packages.
+    assert "Show 6 more" in resp.text
+
+    # Follow both links at the same time.
+    with client as request:
+        resp = request.get(
+            package_endpoint(package),
+            params={
+                "all_deps": True,
+                "all_reqs": True,
+            }
+        )
+    assert resp.status_code == int(HTTPStatus.OK)
+
+    # We're should see everything and have no link.
+    assert "Show 5 more" not in resp.text
+    assert "Show 6 more" not in resp.text
+
+
 def test_package_comments(client: TestClient, user: User, package: Package):
     now = (time.utcnow())
     with db.begin():