<?php

namespace Tempo\Purchasing\Delivery;

/** Native administration consumes the server catalogue; no second authority list. */
final class AdminUiOverlay
{
    public static function prepare(string $host, array $files): array
    {
        $workflow = 'app/Modules/Identity/Services/IdentityWorkflow.php';
        $old = "'catalogue' => ['company' => Permissions::COMPANY, 'unit' => Permissions::UNIT]];";
        $contents = $files[$workflow]['contents'];
        if (substr_count($contents, $old) !== 1) {
            throw new \RuntimeException('Catálogo administrativo do host divergiu.');
        }
        $contents = str_replace($old, "'catalogue' => ['company' => Permissions::COMPANY, 'unit' => Permissions::UNIT], 'catalogue_labels' => \\Tempo\\Purchasing\\Delivery\\AccessOverlay::LABELS];", $contents);
        $files[$workflow]['contents'] = $contents;
        $files[$workflow]['after_sha256'] = hash('sha256', $contents);
        $node = getenv('SGF_NODE_BINARY') ?: 'node';
        $process = proc_open([$node, dirname(__DIR__, 3).'/scripts/sgf-admin-ui-build.mjs', $host], [0 => ['pipe', 'r'], 1 => ['pipe', 'w'], 2 => ['pipe', 'w']], $pipes);
        if (! is_resource($process)) {
            throw new \RuntimeException('Não foi possível preparar a interface.');
        }
        fclose($pipes[0]);
        $output = stream_get_contents($pipes[1]);
        $error = stream_get_contents($pipes[2]);
        fclose($pipes[1]);
        fclose($pipes[2]);
        if (proc_close($process) !== 0) {
            throw new \RuntimeException('Frontend candidato: '.$error);
        }
        $metadata = json_decode(file_get_contents(json_decode($output, true, 16, JSON_THROW_ON_ERROR)['metadata']), true, 32, JSON_THROW_ON_ERROR);
        foreach ($metadata['overlays'] as $file => $source) {
            $body = file_get_contents($source);
            $files[$file] = ['before_sha256' => hash_file('sha256', $host.'/'.$file), 'after_sha256' => hash('sha256', $body), 'contents' => $body];
        }
        $assets = [];
        foreach ($metadata['assets'] as $file => $source) {
            $assets[$file] = file_get_contents($source);
        }

        return ['files' => $files, 'assets' => $assets];
    }
}