perf: add indexes for slow db queries (#698)

Author: andreiio

app/Concerns/BelongsToNurseThroughBeneficiary.php

@@ -36,14 +36,26 @@ public function scopeForUser(Builder $query, User $user): Builder
 
     public function scopeForNurse(Builder $query, User $user): Builder
     {
-        return $query->whereRelation('beneficiary', 'nurse_id', $user->id);
+        return $query->whereHas(
+            'beneficiary',
+            fn (Builder $query): Builder => $query
+                // The parent row is already nurse-scoped
+                ->withoutGlobalScope('forCurrentUser')
+                ->where('nurse_id', $user->id)
+        );
     }
 
     public function scopeForMediator(Builder $query, User $user): Builder
     {
         return $query->where(
             fn (Builder $query): Builder => $query
-                ->whereRelation('beneficiary', 'mediator_id', $user->id)
+                ->whereHas(
+                    'beneficiary',
+                    fn (Builder $query): Builder => $query
+                        // The parent row is already nurse-scoped
+                        ->withoutGlobalScope('forCurrentUser')
+                        ->where('mediator_id', $user->id)
+                )
                 ->when(
                     $this->isFillable('mediator_has_access'),
                     fn (Builder $query): Builder => $query->where('mediator_has_access', true)
@@ -53,10 +65,15 @@ public function scopeForMediator(Builder $query, User $user): Builder
 
     public function scopeForCoordinator(Builder $query, User $user): Builder
     {
-        return $query->where(
+        return $query->whereHas(
+            'beneficiary',
             fn (Builder $query): Builder => $query
-                ->whereRelation('beneficiary.nurse', 'activity_county_id', $user->county_id)
-                ->orWhereRelation('beneficiary.mediator', 'activity_county_id', $user->county_id)
+                ->withoutGlobalScope('forCurrentUser')
+                ->where(
+                    fn (Builder $query): Builder => $query
+                        ->whereRelation('nurse', 'activity_county_id', $user->county_id)
+                        ->orWhereRelation('mediator', 'activity_county_id', $user->county_id)
+                )
         );
     }
 }

app/Filament/Widgets/OpenCasesWidget.php

@@ -33,7 +33,11 @@ public function table(Table $table): Table
                     ->onlyOpen()
                     ->withCount([
                         'appointments' => fn (Builder $query) => $query->countUnique(),
-                        'interventions as realized_interventions_count' => fn (Builder $query) => $query->onlyRealized(),
+                        'interventions as realized_interventions_count' => fn (Builder $query): Builder => $query
+                            // The parent row is already nurse-scoped, so the child count
+                            // doesn't need to re-derive the beneficiary→nurse `exists`.
+                            ->withoutGlobalScope('forCurrentUser')
+                            ->onlyRealized(),
                     ]);
             })
             ->heading(__('intervention.title.open_cases_widget'))

database/migrations/2026_07_24_104235_add_performance_indexes_for_slow_queries.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // For the open-cases widget (interventionable_type + closed_at IS NULL)
+        // and the stats trend queries (whereBetween('closed_at')).
+        Schema::table('interventions', function (Blueprint $table) {
+            $table->index(['interventionable_type', 'closed_at']);
+        });
+
+        // For the onlyRealized()/onlyPlanned() correlated `exists (... where status = ?)`.
+        Schema::table('interventionable_individual_services', function (Blueprint $table) {
+            $table->index('status');
+        });
+
+        // For the beneficiary-status report query: the log_name + event filter,
+        // plus the LEAD() OVER (PARTITION BY subject_id ORDER BY created_at) window.
+        Schema::table('activity_log', function (Blueprint $table) {
+            $table->index(
+                ['subject_type', 'log_name', 'event', 'subject_id', 'created_at'],
+                'activity_log_subject_event_created_at_index'
+            );
+        });
+    }
+};