using System.Linq;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using MongoDB.Bson;
using MongoDB.Driver;

namespace Samples.AspNetCoreMvc.Controllers
{
    [Route("api/mongo")]
    public class MongoDbController : ControllerBase
    {
        private const string ConnectionString = "mongodb://localhost:27017";

        [HttpGet]
        [Route("")]
        public IActionResult Index()
        {
            StringBuilder logStack = new StringBuilder();

            logStack.AppendLine($"Connecting to MongoDB: {ConnectionString}");
            MongoClient dbClient = new MongoClient(ConnectionString);
            logStack.AppendLine("Connected to MongoDB");

            logStack.AppendLine("Get Databases");
            var dbList = dbClient.ListDatabases().ToList();
            var dbNames = string.Join(", ", dbList.Select(db => db.GetValue("name")));
            logStack.AppendLine($"Result Databases: [{dbNames}]");

            logStack.AppendLine("Query startup_logs");
            var document = dbClient
                .GetDatabase("local")
                .GetCollection<BsonDocument>("startup_log")
                .Find(new BsonDocument())
                .FirstOrDefault();
            logStack.AppendLine($"Result startup_logs: {document}");

            return Ok(logStack.ToString());
        }
    }
}