chore: update document approval workflow and bug fixes

Modules/DocumentManagement/app/Http/Controllers/DocumentApprovalController.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Modules\DocumentManagement\Http\Controllers;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use Modules\DocumentManagement\Models\Document;
+use Illuminate\Support\Facades\Gate;
+
+class DocumentApprovalController extends Controller
+{
+    /**
+     * Approve or reject a document.
+     */
+    public function __invoke(Request $request, Document $document)
+    {
+        // Typically, we would use a Gate or Policy. 
+        // For Contractor Admin, they should have a specific role or permission.
+        // Assuming there is a policy checking user->hasRole('Contractor Admin') or similar.
+        Gate::authorize('approve', $document);
+
+        $validated = $request->validate([
+            'status' => 'required|in:Approved,Rejected',
+            'comments' => 'nullable|string|max:1000',
+        ]);
+
+        // Find the global approval chain if it exists
+        $chain = \Modules\ApprovalWorkflow\Models\ApprovalChain::where('approvable_type', Document::class)
+            ->where('approvable_id', $document->id)
+            ->whereIn('status', ['pending', 'in_review'])
+            ->first();
+
+        if ($chain) {
+            $service = app(\Modules\ApprovalWorkflow\Services\ApprovalService::class);
+            if ($validated['status'] === 'Approved') {
+                $service->approve($chain, $request->user(), $validated['comments']);
+            } else {
+                $service->reject($chain, $request->user(), $validated['comments']);
+            }
+        } else {
+            // Fallback for older documents that didn't go through the ApprovalWorkflow
+            $document->approvals()->create([
+                'approved_by' => $request->user()->id,
+                'status' => $validated['status'],
+                'comments' => $validated['comments'] ?? null,
+                'approved_at' => now(),
+            ]);
+
+            $document->update([
+                'status' => $validated['status'],
+            ]);
+        }
+
+        return back()->with('success', "Document has been {$validated['status']}.");
+    }
+}