<?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('salary_revisions', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('company_id')->nullable()->index();
            $table->unsignedBigInteger('user_id')->index();
            $table->date('effective_date')->index();
            $table->decimal('ctc_annual', 15, 2)->default(0);
            $table->json('components_json')->nullable();
            $table->unsignedBigInteger('created_by')->nullable();
            $table->timestamps();

            $table->foreign('company_id')->references('id')->on('companies')->nullOnDelete();
            $table->foreign('user_id')->references('id')->on('users')->cascadeOnDelete();
            $table->foreign('created_by')->references('id')->on('users')->nullOnDelete();
            $table->index(['user_id', 'effective_date']);
        });
    }

    public function down(): void
    {
        Schema::dropIfExists('salary_revisions');
    }
};