EnvelopeGenerator/EnvelopeGenerator.Terminal/CommandManager.cs

using CommandDotNet;
using EnvelopeGenerator.Application.Contracts.Services;
using EnvelopeGenerator.Application.Documents.Queries.Read;
using MediatR;
using System.Reflection;
using System.Text.Json;

namespace EnvelopeGenerator.Terminal;

public class CommandManager
{
    private static JsonSerializerOptions Options = new ()
    {
        WriteIndented = true
    };
    private readonly IEnvelopeReceiverService _envelopeReceiverService;
    private readonly IMediator _mediator;

    public CommandManager(IEnvelopeReceiverService envelopeReceiverService, IMediator mediator)
    {
        _envelopeReceiverService = envelopeReceiverService;
        _mediator = mediator;
    }

    [DefaultCommand]
    public void Execute([Option(Description = "print envelope generator termianal version.")] bool version)
    {
        if(version)
            Console.WriteLine($"v{Assembly.GetExecutingAssembly().GetName().Version}");
    }

    [Subcommand]
    public IEnvelopeReceiverService EnvelopeReceiver => _envelopeReceiverService;

    [Command(ArgumentSeparatorStrategy = ArgumentSeparatorStrategy.EndOfOptions)]
    public async Task ReadDocument(IConsole console,
        [Option(Description = "ID of the document.")] int? id = null,
        [Option(Description = "ID of the envelope containing the document.")] int? envelopeId = null,
        [Option(Description = "Path to save the PDF")] bool save = false,
        [Option(Description = "Directory to save the PDF")] string? dir = null,
        [Option(Description = "Name of file to save the PDF")] string? fileName = null)
    {
        ReadDocumentQuery query = new(id, envelopeId);
        var document = await _mediator.Send(query);
        console.WriteLine(JsonSerializer.Serialize(save ?  document as ReadDocumentResponseBase : document, Options));

        if (save)
        {
            dir ??= AppContext.BaseDirectory;
            fileName ??= $"D{document?.Guid}E{document?.EnvelopeId}.pdf";

            var path = Path.Combine(dir, fileName);
            console.WriteLine("Save to " + path);

            File.WriteAllBytes(path, document?.ByteData ?? Array.Empty<byte>());
        }
    }
}