using System.Text.Json;

namespace FinalFactory.Rendezvous.Capacity;

internal static class Program
{
    private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web)
    {
        WriteIndented = true,
    };

    public static async Task<int> Main(string[] args)
    {
        CapacityOptions options;
        try
        {
            options = CapacityOptions.Parse(args);
        }
        catch (ArgumentException exception)
        {
            Console.Error.WriteLine(exception.Message);
            return 2;
        }

        CapacityReport report = await CapacityRunner.RunAsync(options).ConfigureAwait(false);
        string json = JsonSerializer.Serialize(report, JsonOptions);
        Console.WriteLine(json);
        if (options.OutputPath is not null)
        {
            string fullPath = Path.GetFullPath(options.OutputPath);
            Directory.CreateDirectory(Path.GetDirectoryName(fullPath)!);
            await File.WriteAllTextAsync(fullPath, json + Environment.NewLine).ConfigureAwait(false);
        }

        return report.Passed ? 0 : 1;
    }
}