using System;
using System.Linq;
using DotNetCore.CAP.Infrastructure;
using Microsoft.Extensions.DependencyInjection;
using Xunit;

namespace DotNetCore.CAP.EntityFrameworkCore.Test
{
    public class EFMessageStoreTest : DatabaseTestHost
    {
        [Fact]
        public void CanCreateSentMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapSentMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();
                
                Assert.True(db.CapSentMessages.Any(u => u.Id == guid));
                Assert.NotNull(db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued));
            }
        }

        [Fact]
        public void CanUpdateSentMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapSentMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();

                var selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.NotNull(selectedMessage);

                selectedMessage.StatusName = StatusName.Succeeded;
                selectedMessage.Content = "Test";
                db.SaveChanges();

                selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Succeeded);
                Assert.NotNull(selectedMessage);
                Assert.True(selectedMessage.Content == "Test");
            }
        }

        [Fact]
        public void CanRemoveSentMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapSentMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();

                var selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.NotNull(selectedMessage);

                db.CapSentMessages.Remove(selectedMessage);
                selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.Null(selectedMessage);
            }
        }

        [Fact]
        public void CanCreateReceivedMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapReceivedMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();

                Assert.True(db.CapSentMessages.Any(u => u.Id == guid));
                Assert.NotNull(db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued));
            }
        }

        [Fact]
        public void CanUpdateReceivedMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapReceivedMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();

                var selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.NotNull(selectedMessage);

                selectedMessage.StatusName = StatusName.Succeeded;
                selectedMessage.Content = "Test";
                db.SaveChanges();

                selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Succeeded);
                Assert.NotNull(selectedMessage);
                Assert.True(selectedMessage.Content == "Test");
            }
        }

        [Fact]
        public void CanRemoveReceivedMessageUsingEF()
        {
            using (var db = CreateContext())
            {
                var guid = Guid.NewGuid().ToString();
                var message = new CapReceivedMessage
                {
                    Id = guid,
                    Content = "this is message body",
                    StatusName = StatusName.Enqueued
                };
                db.Attach(message).State = Microsoft.EntityFrameworkCore.EntityState.Added;

                db.SaveChanges();

                var selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.NotNull(selectedMessage);

                db.CapSentMessages.Remove(selectedMessage);
                selectedMessage = db.CapSentMessages.FirstOrDefault(u => u.StatusName == StatusName.Enqueued);
                Assert.Null(selectedMessage);
            }
        }

        public TestDbContext CreateContext(bool delete = false)
        {
            var db = Provider.GetRequiredService<TestDbContext>();
            if (delete)
            {
                db.Database.EnsureDeleted();
            }
            db.Database.EnsureCreated();
            return db;
        }
    }
}