using System.Runtime;
using ZB.MOM.WW.ScadaBridge.ResidualBench;

// Phase-8 WP-4 residual-scope benchmarks (ScadaBridge#49). See the csproj header.
//
//   dotnet run -c Release --project tests/ZB.MOM.WW.ScadaBridge.ResidualBench -- eventlog [--data-dir DIR] [--rows N]
//   dotnet run -c Release --project tests/ZB.MOM.WW.ScadaBridge.ResidualBench -- flatten
//   dotnet run -c Release --project tests/ZB.MOM.WW.ScadaBridge.ResidualBench -- audit --connection-string "..."
//   dotnet run -c Release --project tests/ZB.MOM.WW.ScadaBridge.ResidualBench -- audit-contention [--writers N] [--seconds S]

if (args.Length == 0)
{
    Console.Error.WriteLine("usage: ResidualBench <eventlog|flatten|audit|audit-contention> [options]");
    return 2;
}

var options = BenchArgs.Parse(args.Skip(1));
Console.WriteLine($"# ResidualBench {args[0]} — {DateTimeOffset.UtcNow:o}");
Console.WriteLine($"# runtime {Environment.Version}, server GC {GCSettings.IsServerGC}, {Environment.ProcessorCount} logical cores");

return args[0] switch
{
    "eventlog" => await EventLogBench.RunAsync(options),
    "flatten" => FlattenBench.Run(options),
    "audit" => await AuditBench.RunAsync(options),
    "audit-contention" => await AuditContentionBench.RunAsync(options),
    _ => Unknown(args[0]),
};

static int Unknown(string mode)
{
    Console.Error.WriteLine($"unknown mode '{mode}'");
    return 2;
}