<?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('conflict_declarations', function (Blueprint $table) {
            $table->id();
            $table->foreignId('tenant_id')->constrained()->restrictOnDelete();
            $table->foreignId('user_id')->constrained()->restrictOnDelete();
            $table->foreignId('supplier_id')->nullable()->constrained()->restrictOnDelete();
            $table->foreignId('requisition_id')->nullable()->constrained()->restrictOnDelete();
            $table->boolean('has_conflict');
            $table->date('known_since');
            $table->text('reason');
            $table->timestamp('declared_at');
            $table->foreignId('root_id')->nullable()->constrained('conflict_declarations')->restrictOnDelete();
            $table->foreignId('previous_id')->nullable()->unique()->constrained('conflict_declarations')->restrictOnDelete();
            $table->index(['tenant_id', 'user_id', 'has_conflict']);
        });
    }

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