Changes to documents able to edit them now, also support for auto mail attechemnts

tests/Feature/UpdateDocumentTest.php

@@ -0,0 +1,75 @@
+<?php
+
+use App\Models\ClientCase;
+use App\Models\Contract;
+use App\Models\Document;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+function makeCaseWithContractAndDoc(): array
+{
+    $case = ClientCase::factory()->create();
+    $contract = Contract::factory()->for($case, 'clientCase')->create();
+    $doc = Document::factory()->create();
+    // Assign the document to the case initially
+    $doc->documentable_type = ClientCase::class;
+    $doc->documentable_id = $case->id;
+    $doc->save();
+
+    return [$case, $contract, $doc];
+}
+
+it('reassigns document to a contract within the same case', function () {
+    $user = User::factory()->create();
+    [$case, $contract, $doc] = makeCaseWithContractAndDoc();
+
+    $this->actingAs($user)
+        ->patch(route('clientCase.document.update', [$case->uuid, $doc->uuid]), [
+            'contract_uuid' => $contract->uuid,
+        ])
+        ->assertRedirect();
+
+    $doc->refresh();
+    expect($doc->documentable_type)->toBe(Contract::class)
+        ->and($doc->documentable_id)->toBe($contract->id);
+});
+
+it('returns validation error when assigning to a contract from another case', function () {
+    $user = User::factory()->create();
+    // Source case
+    [$caseA, $contractA, $doc] = makeCaseWithContractAndDoc();
+    // Different case and its contract
+    $caseB = ClientCase::factory()->create();
+    $contractB = Contract::factory()->for($caseB, 'clientCase')->create();
+
+    $this->actingAs($user)
+        ->from(route('clientCase.show', $caseA->uuid))
+        ->patch(route('clientCase.document.update', [$caseA->uuid, $doc->uuid]), [
+            'contract_uuid' => $contractB->uuid,
+        ])
+        ->assertSessionHasErrors('contract_uuid');
+
+    $doc->refresh();
+    // Still belongs to the original case
+    expect($doc->documentable_type)->toBe(ClientCase::class)
+        ->and($doc->documentable_id)->toBe($caseA->id);
+});
+
+it('keeps or moves document to the case when contract_uuid is null/empty', function () {
+    $user = User::factory()->create();
+    [$case, $contract, $doc] = makeCaseWithContractAndDoc();
+
+    $this->actingAs($user)
+        ->from(route('clientCase.show', $case->uuid))
+        ->patch(route('clientCase.document.update', [$case->uuid, $doc->uuid]), [
+            // Simulate select "— Brez —" which typically posts an empty string
+            'contract_uuid' => '',
+        ])
+        ->assertRedirect();
+
+    $doc->refresh();
+    expect($doc->documentable_type)->toBe(ClientCase::class)
+        ->and($doc->documentable_id)->toBe($case->id);
+});