pixelfed/database/migrations/2022_04_20_061915_create_conversations_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use App\DirectMessage;
use App\Models\Conversation;
use Illuminate\Support\Facades\DB;

class CreateConversationsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
    	Schema::dropIfExists('conversations');

        Schema::create('conversations', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->bigInteger('to_id')->unsigned()->index();
            $table->bigInteger('from_id')->unsigned()->index();
            $table->bigInteger('dm_id')->unsigned()->nullable();
            $table->bigInteger('status_id')->unsigned()->nullable();
            $table->string('type')->nullable();
            $table->boolean('is_hidden')->default(false)->index();
            $table->boolean('has_seen')->default(false)->index();
            $table->json('metadata')->nullable();
            $table->unique(['to_id', 'from_id']);
            $table->timestamps();
        });

        sleep(10);

        if(DirectMessage::count()) {

        	foreach(DirectMessage::lazy() as $msg) {
				Conversation::updateOrInsert([
					'to_id' => $msg->to_id,
					'from_id' => $msg->from_id,
				],
				[
					'dm_id' => $msg->id,
					'status_id' => $msg->status_id,
					'type' => $msg->type,
					'created_at' => $msg->created_at,
					'updated_at' => $msg->updated_at
				]);
        	}
        }
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('conversations');
    }
}