<?php

namespace Tests\Feature;

use Tests\TestCase;

/**
 * The platform config templates must offer the same settings.
 *
 * timebank-default.php.example is the starting point for a new installation. It once fell 53 keys
 * behind timebank_cc.php.example, among them account_info.*_self / *_privileged: an installation
 * set up from it hid balances from their own owners and from admins. New settings must be added
 * to both templates.
 */
class PlatformConfigTemplatesTest extends TestCase
{
    private function keys(string $file): array
    {
        return $this->flatten(require base_path("config/{$file}"));
    }

    /**
     * Dotted paths of all leaves. A list (e.g. [1, 2, 3]) or an empty array is a value, not a branch.
     */
    private function flatten(array $config, string $prefix = ''): array
    {
        $keys = [];
        foreach ($config as $key => $value) {
            $path = $prefix === '' ? (string) $key : "{$prefix}.{$key}";
            if (is_array($value) && $value !== [] && !array_is_list($value)) {
                $keys = array_merge($keys, $this->flatten($value, $path));
            } else {
                $keys[] = $path;
            }
        }

        return $keys;
    }

    public function test_the_default_template_has_every_setting_of_the_timebank_cc_template(): void
    {
        $missing = array_diff($this->keys('timebank_cc.php.example'), $this->keys('timebank-default.php.example'));

        $this->assertSame([], array_values($missing), 'Add these keys to config/timebank-default.php.example');
    }

    public function test_the_timebank_cc_template_has_every_setting_of_the_default_template(): void
    {
        $missing = array_diff($this->keys('timebank-default.php.example'), $this->keys('timebank_cc.php.example'));

        $this->assertSame([], array_values($missing), 'Add these keys to config/timebank_cc.php.example');
    }

    public function test_the_default_template_does_not_carry_the_timebank_cc_brand(): void
    {
        $source = file_get_contents(base_path('config/timebank-default.php.example'));

        $this->assertDoesNotMatchRegularExpression('/timebank\.cc/i', $source);
    }
}