<?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('provinces', function (Blueprint $table) {
            $table->string('id', 20)->primary();
            $table->string('name', 100);
            $table->timestamps();
        });

        Schema::create('regencies', function (Blueprint $table) {
            $table->string('id', 20)->primary();
            $table->string('province_id', 20);
            $table->string('name', 100);
            $table->timestamps();

            $table->foreign('province_id')->references('id')->on('provinces')->cascadeOnUpdate()->cascadeOnDelete();
            $table->index('province_id');
        });

        Schema::create('districts', function (Blueprint $table) {
            $table->string('id', 20)->primary();
            $table->string('regency_id', 20);
            $table->string('name', 100);
            $table->timestamps();

            $table->foreign('regency_id')->references('id')->on('regencies')->cascadeOnUpdate()->cascadeOnDelete();
            $table->index('regency_id');
        });

        Schema::create('villages', function (Blueprint $table) {
            $table->string('id', 20)->primary();
            $table->string('district_id', 20);
            $table->string('name', 100);
            $table->timestamps();

            $table->foreign('district_id')->references('id')->on('districts')->cascadeOnUpdate()->cascadeOnDelete();
            $table->index('district_id');
        });

        Schema::table('students', function (Blueprint $table) {
            $table->string('province_id', 20)->nullable()->after('address');
            $table->string('regency_id', 20)->nullable()->after('province_id');
            $table->string('district_id', 20)->nullable()->after('regency_id');
            $table->string('village_id', 20)->nullable()->after('district_id');

            $table->foreign('province_id')->references('id')->on('provinces')->nullOnDelete()->cascadeOnUpdate();
            $table->foreign('regency_id')->references('id')->on('regencies')->nullOnDelete()->cascadeOnUpdate();
            $table->foreign('district_id')->references('id')->on('districts')->nullOnDelete()->cascadeOnUpdate();
            $table->foreign('village_id')->references('id')->on('villages')->nullOnDelete()->cascadeOnUpdate();
        });
    }

    public function down(): void
    {
        Schema::table('students', function (Blueprint $table) {
            $table->dropForeign(['province_id']);
            $table->dropForeign(['regency_id']);
            $table->dropForeign(['district_id']);
            $table->dropForeign(['village_id']);
            $table->dropColumn(['province_id', 'regency_id', 'district_id', 'village_id']);
        });

        Schema::dropIfExists('villages');
        Schema::dropIfExists('districts');
        Schema::dropIfExists('regencies');
        Schema::dropIfExists('provinces');
    }
};