<?php

namespace Tempo\Purchasing\Delivery;

final class BudgetOverlay
{
    public static function prepare(string $host): array
    {
        $path = 'app/Modules/Purchasing/BudgetAdapter.php';
        $source = file_get_contents($host.'/'.$path);
        $before = hash('sha256', $source);
        $anchor = "public static function guard(): void\n    {";
        $source = str_replace("\r\n", "\n", $source);
        if (substr_count($source, $anchor) !== 1) {
            throw new \RuntimeException('Adaptador orçamental divergente.');
        }
        $source = str_replace($anchor, $anchor."\n        if (config('purchasing-operational.enabled') === true) {\n            \\Tempo\\Purchasing\\Delivery\\Installation::assertBudgetReady(DB::connection());\n            return;\n        }", $source);

        return [$path => ['before_sha256' => $before, 'after_sha256' => hash('sha256', $source), 'contents' => $source]];
    }
}