Add client-side GraphQL handling (#2219)

Apollo is currently the most popular GraphQL client and caching library.
This PR eliminates my prior attempt at creating a custom GraphQL client,
and sets up Apollo for future use. As a proof-of-concept, I switched
`/projects` to a GraphQL backend to demonstrate Apollo's pagination
features. While doing so, I added Luxon for easy client-side date
handling.

Since the API endpoint for `/projects` is no longer used, I have marked
it as deprecated, with final removal scheduled for CDash 4.0. Users of
this endpoint are advised to use the GraphQL API instead.

Reviewers can see the pagination functionality in action by changing the
`default_count` value in `/config/lighthouse.php` to a small value.

---------

Co-authored-by: Shelly Belsky <[email protected]>
Co-authored-by: Zack Galbreath <[email protected]>

app/Http/Controllers/ViewProjectsController.php

@@ -12,6 +12,16 @@
 final class ViewProjectsController extends AbstractController
 {
     public function viewAllProjects(): View|RedirectResponse
+    {
+        return $this->viewProjects(true);
+    }
+
+    public function viewActiveProjects(): View|RedirectResponse
+    {
+        return $this->viewProjects();
+    }
+
+    private function viewProjects(bool $all = false): View|RedirectResponse
     {
         $num_public_projects = (int) DB::select('
                                      SELECT COUNT(*) AS c FROM project WHERE public=?
@@ -22,7 +32,8 @@ public function viewAllProjects(): View|RedirectResponse
             return $this->redirectToLogin();
         }
 
-        return $this->view("project.view-all-projects");
+        return $this->view("project.view-all-projects")
+            ->with('show_all', $all);
     }
 
     public function fetchPageContent(): JsonResponse

app/Models/Project.php

@@ -5,6 +5,7 @@
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
 use Illuminate\Support\Carbon;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Support\Facades\Auth;
@@ -216,6 +217,21 @@ public function builds(): HasMany
             });
     }
 
+    /**
+     * TODO: Share code with builds().  As of Laravel 10, aggregates added to hasMany relations
+     *       with conditional clauses are unsupported/broken.  A reusable scope may be a better approach.
+     *
+     * @return HasOne<Build>
+     */
+    public function mostRecentBuild(): HasOne
+    {
+        return $this->hasOne(Build::class, 'projectid', 'id')
+            ->ofMany(['submittime' => 'max'], function (Builder $query) {
+                $query->where('parentid', 0)
+                    ->orWhere('parentid', -1);
+            });
+    }
+
     /**
      * @return HasMany<BlockedBuild>
      */

app/cdash/app/Controller/Api/ViewProjects.php

@@ -23,9 +23,9 @@
 use Illuminate\Support\Facades\DB;
 
 /**
- * TODO: (williamjallen) move all of this logic over to app/Http/Controllers/ViewProjectsController.php
- *
  * API controller for viewProjects.php.
+ *
+ * @deprecated 05/23/2024 This endpoint is deprecated in favor of the GraphQL API and will eventually be removed.
  **/
 class ViewProjects extends \CDash\Controller\Api
 {
@@ -45,6 +45,7 @@ public function __construct(Database $db)
     public function getResponse()
     {
         $response = begin_JSON_response();
+        $response['deprecated'] = 'This endpoint is deprecated and will eventually be removed.';
 
         $global_banner = Banner::find(0);
         if ($global_banner !== null && strlen($global_banner->text) > 0) {

graphql/schema.graphql

@@ -72,6 +72,12 @@ type Project {
     filters: _ @filter(inputType: "BuildFilterInput")
   ): [Build!]! @hasMany(type: CONNECTION) @orderBy(column: "id")
 
+  """
+  The most recent build submitted to this server.  Note: this is determined by
+  submission time, not build start time.
+  """
+  mostRecentBuild: Build @hasOne
+
   "The sites which have submitted a build to this project."
   sites(
     filters: _ @filter(inputType: "SiteFilterInput")