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app/Http/Controllers/User/TranscriptVersionController.php

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+<?php
+
+namespace App\Http\Controllers\User;
+
+use App\Http\Controllers\Controller;
+use App\Models\TranscriptVersion;
+use App\Models\TranscriptionProject;
+use App\Services\AuditLogService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\View\View;
+
+class TranscriptVersionController extends Controller
+{
+    public function index(TranscriptionProject $project): View
+    {
+        $this->authorize('viewVersionHistory', $project);
+
+        $versions = $project->transcriptVersions()
+            ->with('editor')
+            ->orderByDesc('version_number')
+            ->paginate(20);
+
+        return view('user.projects.versions', compact('project', 'versions'));
+    }
+
+    public function restore(
+        TranscriptionProject $project,
+        TranscriptVersion $version,
+        AuditLogService $audit
+    ): RedirectResponse {
+        $this->authorize('restoreVersion', $project);
+
+        // Pastikan versi ini milik projek ini
+        abort_if($version->project_id !== $project->id, 404);
+
+        $oldText     = $project->transcript_text;
+        $nextVersion = ($project->transcriptVersions()->max('version_number') ?? 0) + 1;
+
+        TranscriptVersion::create([
+            'project_id'     => $project->id,
+            'edited_by'      => Auth::id(),
+            'version_number' => $nextVersion,
+            'old_text'       => $oldText,
+            'new_text'       => $version->new_text,
+            'change_summary' => "Dipulihkan dari versi {$version->version_number}",
+            'created_at'     => now(),
+        ]);
+
+        $project->update([
+            'transcript_text'      => $version->new_text,
+            'transcription_status' => 'completed',
+        ]);
+
+        $audit->log('transcript_version_restored', [
+            'project_id' => $project->id,
+            'new_values' => [
+                'restored_from_version' => $version->version_number,
+                'new_version'           => $nextVersion,
+            ],
+        ]);
+
+        return redirect()
+            ->route('user.projects.show', $project)
+            ->with('success', "Versi {$version->version_number} berjaya dipulihkan.");
+    }
+}