// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics;
using osu.Game.Overlays.Comments;
using osu.Game.Overlays;
using osu.Framework.Allocation;
using osu.Game.Online.API.Requests.Responses;
using osu.Game.Users;
using JetBrains.Annotations;
using osu.Framework.Testing;

namespace osu.Game.Tests.Visual.Online
{
    public class TestSceneOfflineCommentsContainer : OsuTestScene
    {
        [Cached]
        private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Blue);

        private TestCommentsContainer comments;

        [SetUp]
        public void SetUp() => Schedule(() =>
        {
            Clear();
            Add(new BasicScrollContainer
            {
                RelativeSizeAxes = Axes.Both,
                Child = comments = new TestCommentsContainer()
            });
        });

        [Test]
        public void TestAppendDuplicatedComment()
        {
            AddStep("Add comment bundle", () => comments.ShowComments(getCommentBundle()));
            AddUntilStep("Dictionary length is 10", () => comments.DictionaryLength == 10);
            AddStep("Append existing comment", () => comments.AppendComments(getCommentSubBundle()));
            AddAssert("Dictionary length is 10", () => comments.DictionaryLength == 10);
        }

        [Test]
        public void TestLocalCommentBundle()
        {
            AddStep("Add comment bundle", () => comments.ShowComments(getCommentBundle()));
            AddStep("Add empty comment bundle", () => comments.ShowComments(getEmptyCommentBundle()));
        }

        private CommentBundle getEmptyCommentBundle() => new CommentBundle
        {
            Comments = new List<Comment>(),
        };

        private CommentBundle getCommentBundle() => new CommentBundle
        {
            Comments = new List<Comment>
            {
                new Comment
                {
                    Id = 1,
                    Message = "Simple test comment",
                    LegacyName = "TestUser1",
                    CreatedAt = DateTimeOffset.Now,
                    VotesCount = 5
                },
                new Comment
                {
                    Id = 100,
                    Message = "This comment has \"load replies\" button because it has unloaded replies",
                    LegacyName = "TestUser1100",
                    CreatedAt = DateTimeOffset.Now,
                    VotesCount = 5,
                    RepliesCount = 2,
                },
                new Comment
                {
                    Id = 111,
                    Message = "This comment has \"Show More\" button because it has unloaded replies, but some of them are loaded",
                    LegacyName = "TestUser1111",
                    CreatedAt = DateTimeOffset.Now,
                    VotesCount = 100,
                    RepliesCount = 2,
                },
                new Comment
                {
                    Id = 112,
                    ParentId = 111,
                    Message = "I'm here to make my parent work",
                    LegacyName = "someone",
                    CreatedAt = DateTimeOffset.Now,
                    VotesCount = 2,
                },
                new Comment
                {
                    Id = 2,
                    Message = "This comment has been deleted :( but visible for admins",
                    LegacyName = "TestUser2",
                    CreatedAt = DateTimeOffset.Now,
                    DeletedAt = DateTimeOffset.Now,
                    VotesCount = 5
                },
                new Comment
                {
                    Id = 3,
                    Message = "This comment is a top level",
                    LegacyName = "TestUser3",
                    CreatedAt = DateTimeOffset.Now,
                    RepliesCount = 2,
                },
                new Comment
                {
                    Id = 4,
                    ParentId = 3,
                    Message = "And this is a reply",
                    RepliesCount = 1,
                    LegacyName = "TestUser1",
                    CreatedAt = DateTimeOffset.Now,
                },
                new Comment
                {
                    Id = 15,
                    ParentId = 4,
                    Message = "Reply to reply",
                    LegacyName = "TestUser1",
                    CreatedAt = DateTimeOffset.Now,
                },
                new Comment
                {
                    Id = 6,
                    ParentId = 3,
                    LegacyName = "TestUser11515",
                    CreatedAt = DateTimeOffset.Now,
                    DeletedAt = DateTimeOffset.Now,
                },
                new Comment
                {
                    Id = 5,
                    Message = "This comment is voted and edited",
                    LegacyName = "BigBrainUser",
                    CreatedAt = DateTimeOffset.Now,
                    EditedAt = DateTimeOffset.Now,
                    VotesCount = 1000,
                    EditedById = 1,
                }
            },
            IncludedComments = new List<Comment>(),
            UserVotes = new List<long>
            {
                5
            },
            Users = new List<User>
            {
                new User
                {
                    Id = 1,
                    Username = "Good_Admin"
                }
            },
            Total = 10
        };

        private CommentBundle getCommentSubBundle() => new CommentBundle
        {
            Comments = new List<Comment>
            {
                new Comment
                {
                    Id = 1,
                    Message = "Simple test comment",
                    LegacyName = "TestUser1",
                    CreatedAt = DateTimeOffset.Now,
                    VotesCount = 5
                },
            },
            IncludedComments = new List<Comment>(),
        };

        private class TestCommentsContainer : CommentsContainer
        {
            public new void AppendComments([NotNull] CommentBundle bundle) => base.AppendComments(bundle);

            public int DictionaryLength => CommentDictionary.Count;

            public void ShowComments(CommentBundle bundle)
            {
                this.ChildrenOfType<TotalCommentsCounter>().Single().Current.Value = 0;
                ClearComments();
                OnSuccess(bundle);
            }
        }
    }
}