Add filter duplicated documents migration and set unique on uuid

database/migrations/2023_09_05_123411_filter_duplicated_documents_and_set_unique.php

@@ -0,0 +1,54 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\QueryException;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+class FilterDuplicatedDocumentsAndSetUnique extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        DB::table('documents')->get()->groupBy('uuid')
+            ->each(
+                function (Collection $groupedDocuments) {
+                    $remaining = $groupedDocuments->count();
+                    foreach ($groupedDocuments as $document) {
+                        if ($remaining > 1) {
+                            try {
+                                DB::table('documents')->where(
+                                    'id',
+                                    $document->id
+                                )->delete();
+                                $remaining--;
+                            } catch (QueryException $e) {
+                                continue;
+                            }
+                        }
+                    }
+                }
+            );
+
+        Schema::table('documents', function (Blueprint $table) {
+            $table->uuid('uuid')->comment('Document uuid')
+                ->unique()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}