<?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('coordinates', function (Blueprint $table) {
            $table->id();
            $table->char('polygon_id', 36)->nullable(); // Foreign key to polygons
            $table->char('triangle_id', 36)->nullable(); // Foreign key to triangles
            $table->float('lat');
            $table->float('lng');
            $table->timestamps();

            $table->foreign('polygon_id')->references('id')->on('polygons')->onDelete('cascade');
            $table->foreign('triangle_id')->references('id')->on('triangles')->onDelete('cascade');
            
            $table->index(['polygon_id', 'triangle_id']); // Index for performance
        });
    }

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