using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;

using MongoDB.Driver;
using MongoDB.Bson;
using MongoDB.Driver.Linq;



namespace Root.Common.Tests.MongoDB.MongoTests
{
    [TestClass]
    public class MongoTests
    {
        public interface IEntity
        {
            string Name { get; set; }
        }

        public class Entity : IEntity
        {
            public Entity()
            {
            }

            public string Name { get; set; }
        }

        [TestMethod]
        public void TestMethod2()
        {

            MongoServer server = MongoServer.Create(string.Format("mongodb://localhost"));
            Assert.IsNotNull(server);

            MongoDatabase database = server.GetDatabase("MongoTests");
            Assert.IsNotNull(database);

            database.Drop();

            MongoCollection collection = database.GetCollection<Entity>("Entity");
            Assert.IsNotNull(collection);

            for (int i = 0; i < 100; ++i)
            {
                Entity e = new Entity() { Name = "Name_" + i };

                WriteConcernResult result = collection.Insert(e.GetType(), e, WriteConcern.Acknowledged);
                Assert.IsTrue(result.Ok);
            }

            int count = (from e in collection.AsQueryable<Entity>()
                         where true || e.Name == "Name_22"
                         select e).Count();

            Assert.IsTrue(count == 100);

        }

        [TestMethod]
        public void TestMethod1()
        {
            
            MongoServer server = MongoServer.Create(string.Format("mongodb://localhost"));
            Assert.IsNotNull(server);

            MongoDatabase database = server.GetDatabase("MongoTests");
            Assert.IsNotNull(database);

            database.Drop();

            MongoCollection collection = database.GetCollection<Entity>("Entity");
            Assert.IsNotNull(collection);

            for (int i = 0; i < 100; ++i)
            {
                Entity e = new Entity() { Name = "Name_" + i };

                WriteConcernResult result = collection.Insert(e.GetType(), e, WriteConcern.Acknowledged);
                Assert.IsTrue(result.Ok);
            }

            IQueryable<IEntity> intermediateQuery = from e in collection.AsQueryable<Entity>()
                                     select e;

            //works
            int count = intermediateQuery.Count();

            IQueryable<IEntity> finalQuery = from e in intermediateQuery
                                     where e.Name == "Name_22"
                                     select e;

            //Throws Exception (can't find serializer for IEntity)???
            var entity = finalQuery.FirstOrDefault();
        }
    }
}