using BotPages.Core;
using BotPages.Core.Abstractions;
using BotPages.Core.Messaging;
using BotPages.Core.Routing;

namespace Demo.Pages;

[Route("FileSend")]
public sealed class FileSendPage : SingletonPage
{
    public override Task OnEnter(PageContext ctx, CancellationToken ct)
    {
        var content = "Hello from BotPages! This file is generated on the fly.";
        var stream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(content));

        var demoFile = new FileDescriptor
        {
            Id = "", // не используется при отправке нового файла
            Name = "demo.txt",
            Extension = "txt",
            Size = stream.Length,
            Kind = FileKind.Document,
            GetStreamAsync = _ => Task.FromResult<Stream>(stream)
        };

        return new MessageBuilder(ctx)
            .Text("Вот пример отправки нового файла 📎", MessageFormat.Markdown)
            .File(demoFile, "Демонстрационный файл")
            .SendAsync(ct);
    }
}