<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up(): void
    {
        Schema::create('user_mentions', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('user_id');
            $table->unsignedBigInteger('mentioned_user_id');
            $table->unsignedBigInteger('artwork_id')->nullable();
            $table->unsignedBigInteger('comment_id');
            $table->timestamp('created_at')->useCurrent();

            $table->unique(['comment_id', 'mentioned_user_id'], 'user_mentions_comment_user_unique');
            $table->index(['mentioned_user_id', 'created_at'], 'user_mentions_mentioned_created_idx');
            $table->index(['user_id', 'created_at'], 'user_mentions_actor_created_idx');

            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->foreign('mentioned_user_id')->references('id')->on('users')->onDelete('cascade');
            $table->foreign('artwork_id')->references('id')->on('artworks')->onDelete('cascade');
            $table->foreign('comment_id')->references('id')->on('artwork_comments')->onDelete('cascade');
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('user_mentions');
    }
};
