<?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('settlements', function (Blueprint $table) {
            $table->uuid('id')->primary();
            $table->foreignUuid('product_id')->constrained('products')->cascadeOnDelete();
            $table->string('type'); // "MÓNG", "THÂN", "CP THI CÔNG"
            $table->decimal('temp_value', 15, 2)->default(0);
            $table->decimal('final_value', 15, 2)->default(0);
            $table->decimal('difference', 15, 2)->virtualAs('final_value - temp_value');
            $table->string('red_book_status')->nullable();
            $table->date('issue_date')->nullable();
            $table->timestamps();
        });
    }
    public function down(): void { Schema::dropIfExists('settlements'); }
};