sera-slackbot/Bot/Commands/TestBotCommand.cs

using Microsoft.AspNetCore.Http;

using SlackAPI;
using System.Text.Json;
using System;
using sera_slackbot.Library;
using System.Collections.Generic;
using SlackAPI.RPCMessages;

namespace sera_slackbot.Commands
{
    public class TestBotCommand : IBotCommand
    {
        private JsonFileSaver saver;
        private string channelId;
        private string userId;
        private string text;
        private string message;
        public TestBotCommand(JsonFileReader reader, JsonFileSaver saver)
        {
        }

        public void ExtractValidData(JsonElement slackEvent)
        {
            this.text = slackEvent.GetProperty("text").ToString();
            this.channelId = slackEvent.GetProperty("channel").ToString();
            this.userId = slackEvent.GetProperty("user").ToString();
        }

        public bool WillTrigger(JsonElement slackEvent)
        {
            var text = slackEvent.GetProperty("text").ToString();
            return text.StartsWith("test", StringComparison.InvariantCultureIgnoreCase);
        }

        public dynamic Run(SlackClient client)
        {
            var request = new List<Tuple<string, string>>();
            request.Add(new Tuple<string, string>("channel", channelId));
            request.Add(new Tuple<string, string>("user", userId));
            request.Add(new Tuple<string, string>("blocks", BuildBlocks()));

            var callback = new Action<PostMessageResponse>((response) =>
            {
                Console.WriteLine("Direct API call {0}", response.error);
            });

            Console.WriteLine(JsonSerializer.Serialize(request.ToArray(), new JsonSerializerOptions { WriteIndented = true }));
            client.APIRequestWithToken(callback, request.ToArray());

            return new
            {
                code = StatusCodes.Status200OK,
                body = ""
            };
        }

        private string BuildBlocks()
        {
            var blocks = new List<dynamic>();
            blocks.Add(new
            {
                type = "section",
                text = new
                {
                    type = "mrkdwn",
                    text = "Section text"
                }
            });

            var actionElements = new List<dynamic>();
            actionElements.Add(new
            {
                type = "button",
                text = new
                {
                    type = "plain_text",
                    text = "Yes",
                    emoji = false
                },
                value = "yes"
            });

            actionElements.Add(new
            {
                type = "button",
                text = new
                {
                    type = "plain_text",
                    text = "No",
                    emoji = false
                },
                value = "no"
            });

            blocks.Add(new
            {
                type = "actions",
                elements = actionElements.ToArray()
            });

            var jsonText = JsonSerializer.Serialize(blocks);
            return jsonText;
        }
    }
}