Enhance Form Submission Export Functionality (#657)

* Enhance Form Submission Export Functionality

* Validate new param 'columns'

* Form submission export request as seprate class with validation

* Test case for export

---------

Co-authored-by: Julien Nahum <julien@nahum.net>

api/tests/Feature/Forms/FormSubmissionExportTest.php

@@ -0,0 +1,98 @@
+<?php
+
+use App\Models\User;
+use Laravel\Sanctum\Sanctum;
+use Tests\Helpers\FormSubmissionDataFactory;
+
+it('can export form submissions with selected columns', function () {
+    $user = $this->actingAsProUser();
+    $workspace = $this->createUserWorkspace($user);
+    $form = $this->createForm($user, $workspace, [
+        'properties' => [
+            [
+                'id' => 'name_field',
+                'name' => 'Name',
+                'type' => 'text',
+                'required' => true,
+            ],
+            [
+                'id' => 'email_field',
+                'name' => 'Email',
+                'type' => 'email',
+                'required' => true,
+            ]
+        ]
+    ]);
+
+    // Create some submissions
+    $submissions = [
+        ['name_field' => 'John Doe', 'email_field' => 'john@example.com'],
+        ['name_field' => 'Jane Smith', 'email_field' => 'jane@example.com']
+    ];
+
+    foreach ($submissions as $submission) {
+        $formData = FormSubmissionDataFactory::generateSubmissionData($form, $submission);
+        $this->postJson(route('forms.answer', $form->slug), $formData)
+            ->assertSuccessful();
+    }
+
+    // Test export with selected columns
+    $response = $this->postJson(route('open.forms.submissions.export', [
+        'id' => $form->id,
+        'columns' => [
+            'name_field' => true,
+            'email_field' => true,
+            'created_at' => true
+        ]
+    ]));
+
+    $response->assertSuccessful()
+        ->assertHeader('content-disposition', 'attachment; filename=' . $form->slug . '-submission-data.csv');
+});
+
+it('cannot export form submissions with invalid columns', function () {
+    $user = $this->actingAsProUser();
+    $workspace = $this->createUserWorkspace($user);
+    $form = $this->createForm($user, $workspace, [
+        'properties' => [
+            [
+                'id' => 'name_field',
+                'name' => 'Name',
+                'type' => 'text',
+                'required' => true,
+            ]
+        ]
+    ]);
+
+    $response = $this->postJson(route('open.forms.submissions.export', [
+        'id' => $form->id,
+        'columns' => [
+            'invalid_field' => true,
+            'name_field' => true
+        ]
+    ]));
+
+    $response->assertStatus(422)
+        ->assertJsonValidationErrors(['columns']);
+});
+
+it('cannot export form submissions from another user form', function () {
+    $user = User::factory()->create();
+    $user2 = User::factory()->create();
+    $workspace = createUserWorkspace($user2);
+
+    $form = createForm($user, $workspace);
+
+    Sanctum::actingAs($user2);
+
+    $response = $this->postJson(route('open.forms.submissions.export', [
+        'id' => $form->id,
+        'columns' => [
+            'name_field' => true
+        ]
+    ]));
+
+    $response->assertJson([
+        'message' => 'Unauthenticated.'
+    ]);
+});