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

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

/// <summary>
/// Helpers for generating and writing NATS server configuration files used by
/// integration tests.
/// </summary>
public static class ConfigHelper
{
    /// <summary>
    /// Template for a basic JetStream super-cluster node.
    /// Placeholders: {ServerName}, {ClusterName}, {StoreDir}, {ClusterPort}, {Routes}
    /// </summary>
    public const string JsSuperClusterTemplate = """
        listen: 127.0.0.1:-1
        server_name: {ServerName}
        jetstream: {max_mem_store: 256MB, max_file_store: 2GB, store_dir: '{StoreDir}'}
        cluster {
            name: {ClusterName}
            listen: 127.0.0.1:{ClusterPort}
            routes = [{Routes}]
        }
        accounts { $SYS { users = [ { user: "admin", pass: "s3cr3t!" } ] } }
        """;

    /// <summary>
    /// Writes <paramref name="content"/> to a temporary file and returns its path.
    /// The file is deleted when the process exits (via <see cref="Path.GetTempFileName"/>).
    /// </summary>
    public static string CreateConfigFile(string content)
    {
        var path = Path.Combine(Path.GetTempPath(), $"natsnet_{Guid.NewGuid():N}.conf");
        File.WriteAllText(path, content);
        return path;
    }
}