// Copyright 2020-2025 The NATS Authors
// Licensed under the Apache License, Version 2.0

namespace ZB.MOM.NatsNet.Server.IntegrationTests.Helpers;

/// <summary>
/// Provides configuration templates and file helpers for integration tests.
/// Mirrors Go's <c>jsClusterTempl</c>, <c>jsClusterAccountsTempl</c>, etc.
/// </summary>
public static class ConfigHelper
{
    /// <summary>
    /// Standard JetStream cluster configuration template.
    /// Use <c>%s</c> placeholders for server_name, store_dir, cluster_name, port, and routes.
    /// </summary>
    public const string JsClusterTemplate = @"
listen: 127.0.0.1:-1
server_name: %s
jetstream: {max_mem_store: 256MB, max_file_store: 2GB, store_dir: '%s'}

cluster {
    name: %s
    listen: 127.0.0.1:%d
    routes = [%s]
}
";

    /// <summary>
    /// JetStream cluster template with accounts.
    /// </summary>
    public const string JsClusterAccountsTemplate = @"
listen: 127.0.0.1:-1
server_name: %s
jetstream: {max_mem_store: 256MB, max_file_store: 2GB, store_dir: '%s'}

accounts {
    $SYS {
        users: [{user: admin, password: s3cr3t!}]
    }
    ONE {
        jetstream: enabled
        users: [{user: one, password: p}]
    }
    TWO {
        jetstream: enabled
        users: [{user: two, password: p}]
    }
}

cluster {
    name: %s
    listen: 127.0.0.1:%d
    routes = [%s]
}
";

    /// <summary>
    /// Creates a temporary config file with the given content and returns its path.
    /// </summary>
    public static string CreateConfigFile(string content)
    {
        var path = Path.Combine(Path.GetTempPath(), $"nats-test-{Guid.NewGuid():N}.conf");
        File.WriteAllText(path, content);
        return path;
    }
}