<?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('buckets', function (Blueprint $table) {
            $table->id();
            $table->foreignId('scenario_id')->constrained()->onDelete('cascade');
            $table->string('name');
            $table->integer('priority')->comment('Lower number = higher priority, 1 = first');
            $table->integer('sort_order')->default(0)->comment('For UI display ordering');
            $table->enum('allocation_type', ['fixed_limit', 'percentage', 'unlimited']);
            $table->decimal('allocation_value', 10, 2)->nullable()
                ->comment('Limit amount for fixed_limit, percentage for percentage type, NULL for unlimited');
            $table->timestamps();

            // Indexes for performance
            $table->index(['scenario_id', 'priority']);
            $table->unique(['scenario_id', 'priority'], 'unique_scenario_priority');
        });
    }

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