docs: add ConnectionProviderService guidelines and enable detailed activity logging

- Added comprehensive documentation for `ConnectionProviderService`, outlining architectural design, coding standards, and operational flows.
- Enhanced `ConnectionProvider` and `ConnectedApp` models with Spatie activity logging configuration for detailed CRUD activity tracking.
- Updated delete methods in service classes to include audit logs and cascade behavior refinement.
- Revised activity log migration schema for stricter typing and method structure.

app/Models/ConnectedApp.php

@@ -4,9 +4,11 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\{Model, Relations\BelongsTo, SoftDeletes};
 use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\{Model, Relations\BelongsTo, SoftDeletes};
 use Illuminate\Database\Eloquent\Relations\HasOne;
+use Spatie\Activitylog\Models\Concerns\LogsActivity;
+use Spatie\Activitylog\Support\LogOptions;
 
 #[Fillable([
     'name',
@@ -17,7 +19,7 @@
 ])]
 class ConnectedApp extends Model
 {
-    use SoftDeletes;
+    use LogsActivity, SoftDeletes;
 
     public function protocol(): HasOne
     {
@@ -33,4 +35,16 @@ public function status(): HasOne
     {
         return $this->hasOne(ConnectionStatus::class, 'id', 'connection_status_id');
     }
+
+    public function getActivitylogOptions(): LogOptions
+    {
+        return LogOptions::defaults()
+            ->logFillable() // Log all fillable attributes
+            ->logOnlyDirty() // Log only attributes that actually changed
+            ->dontLogIfAttributesChangedOnly(['updated_at']) // Skip if only updated_at changed
+            ->dontLogEmptyChanges() // Prevent saving logs with no changed attributes
+            ->setDescriptionForEvent(fn (
+                string $eventName
+            ) => ":causer.name {$eventName} connected app ':subject.name'");
+    }
 }

app/Models/ConnectionProvider.php

@@ -4,16 +4,30 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\{Model, Relations\HasMany, SoftDeletes};
 use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\{Model, Relations\HasMany, SoftDeletes};
+use Spatie\Activitylog\Models\Concerns\LogsActivity;
+use Spatie\Activitylog\Support\LogOptions;
 
 #[Fillable(['name', 'slug'])]
 final class ConnectionProvider extends Model
 {
-    use SoftDeletes;
+    use LogsActivity, SoftDeletes;
 
     public function connectedApps(): HasMany
     {
         return $this->hasMany(ConnectedApp::class);
     }
+
+    public function getActivitylogOptions(): LogOptions
+    {
+        return LogOptions::defaults()
+            ->logFillable() // Log all fillable attributes
+            ->logOnlyDirty() // Log only attributes that actually changed
+            ->dontLogIfAttributesChangedOnly(['updated_at']) // Skip if only updated_at changed
+            ->dontLogEmptyChanges() // Prevent saving logs with no changed attributes
+            ->setDescriptionForEvent(fn (
+                string $eventName
+            ) => ":causer.name {$eventName} connection provider ':subject.name'");
+    }
 }

app/Services/ConnectedAppService.php

@@ -39,9 +39,10 @@ public function update(int $id, ConnectAppRequest $data): void
             throw new InvalidArgumentException('Invalid id');
         }
         DB::transaction(
-            fn () => ConnectedApp::query()
-                ->where('id', $id)
-                ->update($data->toArray())
+            function () use ($id, $data): void {
+                $app = ConnectedApp::query()->findOrFail($id);
+                $app->update($data->toArray());
+            }
         );
     }
 
@@ -56,9 +57,10 @@ public function delete(int $id): void
         }
 
         DB::transaction(
-            fn () => ConnectedApp::query()
-                ->where('id', $id)
-                ->delete()
+            function () use ($id): void {
+                $app = ConnectedApp::query()->findOrFail($id);
+                $app->delete();
+            }
         );
     }
 

app/Services/ConnectionProviderService.php

@@ -58,16 +58,20 @@ public function getAll(): PaginatedDataCollection
     public function update(string $slug, StoreConnectionProviderRequestData $data): void
     {
         DB::transaction(
-            fn() => ConnectionProvider::query()
-                ->where('slug', $slug)
-                ->update($data->toArray())
+            function () use ($slug, $data): void {
+                $app = ConnectionProvider::query()
+                    ->where('slug', $slug);
+
+                $app->update($data->toArray());
+            }
         );
     }
 
     /**
      * Delete the connection provider and associated connected apps.
+     *
      * @throws ModelNotFoundException when the connection provider is not found.
-     * @throws Throwable when an error occurs during the deletion.
+     * @throws Throwable              when an error occurs during the deletion.
      */
     public function delete(string $slug): void
     {
@@ -76,12 +80,27 @@ function () use ($slug): void {
                 $provider = ConnectionProvider::query()
                     ->where('slug', $slug)
                     ->firstOrFail();
+                $deletedApps = $provider->connectedApps()
+                    ->select(['id', 'name'])
+                    ->get()
+                    ->toArray();
 
                 // Note: This performs a mass soft-delete query.
                 // Model events for ConnectedApp will NOT fire.
                 $provider->connectedApps()->delete();
+                // Stop the default logging
+                $provider->disableLogging()->delete();
 
-                $provider->delete();
+                activity()
+                    ->performedOn($provider)
+                    ->event('provider_cascade_deleted')
+                    ->withProperties([
+                        'slug' => $slug,
+                        'name' => $provider->name,
+                        'deleted_apps_count' => count($deletedApps),
+                        'deleted_apps' => $deletedApps,
+                    ])
+                    ->log(":causer.name Deleted connection provider '{$provider->name}' alongside ".count($deletedApps).' connected apps.');
             }
         );
     }

app/Services/README.md

@@ -0,0 +1,98 @@
+# Service Class Guidelines & Flow: ConnectionProviderService
+
+This document outlines the architectural flow, design patterns, and coding guidelines implemented within the
+ConnectionProviderService class. It serves as a reference for maintaining this service and acts as a blueprint for
+creating similar service classes within the application.
+
+## 1. General Coding Guidelines
+
+The service class adheres to several strict Laravel and general PHP best practices to ensure robustness, predictability,
+and maintainability.
+
+1. Strict Typing: The file declares strict_types=1 at the top. All method arguments and return values must have explicit
+   type hints.
+
+2. Data Transfer Objects (DTOs): Instead of passing raw arrays or generic Laravel Request objects, the service utilizes
+   strongly typed DTOs (via Spatie\LaravelData).
+
+   Input: StoreConnectionProviderRequestData
+
+   Output: ConnectionProviderData, PaginatedDataCollection
+
+3. Database Transactions: All data mutation methods (Create, Update, Delete) are wrapped within DB::transaction()
+   closures to guarantee database integrity. If any part of the operation fails, the entire transaction rolls back.
+
+4. The #[NoDiscard] Attribute: Read-only methods (search, getAll, getProvider) utilize the #[NoDiscard] attribute. This
+   strictly enforces that the calling code must capture and use the returned data, preventing logic leaks where a
+   developer calls a getter but ignores the result.
+
+5. Explicit Exception Documentation: Every method that can throw an exception documents it clearly in the PHPDoc block (
+   e.g., @throws ModelNotFoundException, @throws Throwable).
+
+## 2. Architectural Flow by Operation
+
+### A. Read Operations
+
+Read operations are optimized for memory and performance by explicitly selecting only the necessary columns.
+
+* search(string $value)
+
+        Flow: Initiates an Eloquent query targeting the slug or name columns using a LIKE operator (%value%).
+
+        Returns: An Eloquent Collection of ConnectionProvider models.
+
+* getAll()
+
+        Flow: Queries the database selecting only id, name, and slug. It then paginates the results.
+
+        Returns: The paginated result is transformed into a PaginatedDataCollection containing ConnectionProviderData objects.
+
+* getProvider(string $slug)
+
+        Flow: Looks up a specific provider by its slug, selecting only id, name, and slug.
+
+        Returns: Transforms the found model into a single ConnectionProviderData object.
+
+### B. Write Operations (Create / Update)
+
+Write operations rely on DTOs to ensure the data being inserted or updated is pre-validated and formatted correctly.
+
+* create(StoreConnectionProviderRequestData $data)
+
+        Flow: Opens a DB transaction. Converts the validated DTO to an array and passes it to the Eloquent create method.
+
+* update(string $slug, StoreConnectionProviderRequestData $data)
+
+        Flow: Opens a DB transaction. Locates the model by its slug and updates it using the array representation of the provided DTO.
+
+### C. Delete Operation (Cascade & Logging)
+
+The delete method contains the most complex flow, handling cascading soft-deletes and custom audit logging.
+
+    delete(string $slug)
+
+        Step 1 (Find): Locates the ConnectionProvider by slug or throws a ModelNotFoundException.
+
+        Step 2 (Fetch Relations): Retrieves the id and name of all associated connectedApps to preserve their state for the audit log.
+
+        Step 3 (Cascade Delete): Performs a mass query deletion ($provider->connectedApps()->delete()).
+
+            Note: Because this is a mass delete, individual model events for ConnectedApp will not fire.
+
+        Step 4 (Provider Delete): Disables default logging on the provider to prevent redundant logs, then deletes the provider.
+
+        Step 5 (Audit Log): Manually triggers a comprehensive Spatie Activity log (provider_cascade_deleted). It records the specific user (:causer.name), the provider details, and an array of the deleted child apps.
+
+## 3. Performance & Security Best Practices
+
+When extending this service or building new ones, adhere strictly to the following patterns demonstrated in the code:
+
+1. Selective Querying: Always use ```$model->select(['id', 'column_name'])``` when returning data to the frontend or
+   DTOs to avoid memory bloat from fetching unused columns (e.g., timestamps, hidden credentials).
+
+2. Route/Key Binding vs. Service Lookups: Notice that update, delete, and getProvider accept a primitive string
+   ```$slug / $id``` rather than an already-resolved Model. This keeps the service decoupled from HTTP routing logic and
+   allows it to be called safely from CLI commands or background jobs.
+
+3. Auditable Actions: For destructive actions (like cascades), always disable automatic noise and implement a custom,
+   highly detailed activity log so system administrators can trace exactly what data was removed and by whom.

config/activitylog.php

@@ -1,7 +1,8 @@
 <?php
 
-use Spatie\Activitylog\Actions\CleanActivityLogAction;
-use Spatie\Activitylog\Actions\LogActivityAction;
+declare(strict_types=1);
+
+use Spatie\Activitylog\Actions\{CleanActivityLogAction, LogActivityAction};
 use Spatie\Activitylog\Models\Activity;
 
 return [

database/migrations/2026_05_15_115455_create_activity_log_table.php

@@ -1,14 +1,16 @@
 <?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
+return new class() extends Migration
 {
     public function up(): void
     {
-        Schema::create('activity_log', function (Blueprint $table) {
+        Schema::create('activity_log', function (Blueprint $table): void {
             $table->id();
             $table->string('log_name')->nullable()->index();
             $table->text('description');