// 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.IO;
using System.Linq;
using NUnit.Framework;
using osu.Framework.Allocation;
using osu.Framework.Screens;
using osu.Framework.Testing;
using osu.Game.Beatmaps;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Osu;
using osu.Game.Screens.Edit;
using osu.Game.Screens.Edit.Setup;
using osu.Game.Storyboards;
using osu.Game.Tests.Resources;
using SharpCompress.Archives;
using SharpCompress.Archives.Zip;

namespace osu.Game.Tests.Visual.Editing
{
    public class TestSceneEditorBeatmapCreation : EditorTestScene
    {
        protected override Ruleset CreateEditorRuleset() => new OsuRuleset();

        protected override bool EditorComponentsReady => Editor.ChildrenOfType<SetupScreen>().SingleOrDefault()?.IsLoaded == true;

        protected override bool IsolateSavingFromDatabase => false;

        [Resolved]
        private BeatmapManager beatmapManager { get; set; }

        public override void SetUpSteps()
        {
            base.SetUpSteps();

            // if we save a beatmap with a hash collision, things fall over.
            // probably needs a more solid resolution in the future but this will do for now.
            AddStep("make new beatmap unique", () => EditorBeatmap.Metadata.Title = Guid.NewGuid().ToString());
        }

        protected override WorkingBeatmap CreateWorkingBeatmap(IBeatmap beatmap, Storyboard storyboard = null) => new DummyWorkingBeatmap(Audio, null);

        [Test]
        public void TestCreateNewBeatmap()
        {
            AddStep("save beatmap", () => Editor.Save());
            AddAssert("new beatmap in database", () => beatmapManager.QueryBeatmapSet(s => s.ID == EditorBeatmap.BeatmapInfo.BeatmapSet.ID)?.Value.DeletePending == false);
        }

        [Test]
        public void TestExitWithoutSave()
        {
            EditorBeatmap editorBeatmap = null;

            AddStep("store editor beatmap", () => editorBeatmap = EditorBeatmap);
            AddStep("exit without save", () =>
            {
                Editor.Exit();
                DialogOverlay.CurrentDialog.PerformOkAction();
            });

            AddUntilStep("wait for exit", () => !Editor.IsCurrentScreen());
            AddAssert("new beatmap not persisted", () => beatmapManager.QueryBeatmapSet(s => s.ID == editorBeatmap.BeatmapInfo.BeatmapSet.ID)?.Value.DeletePending == true);
        }

        [Test]
        public void TestAddAudioTrack()
        {
            AddAssert("switch track to real track", () =>
            {
                var setup = Editor.ChildrenOfType<SetupScreen>().First();

                string temp = TestResources.GetTestBeatmapForImport();

                string extractedFolder = $"{temp}_extracted";
                Directory.CreateDirectory(extractedFolder);

                using (var zip = ZipArchive.Open(temp))
                    zip.WriteToDirectory(extractedFolder);

                bool success = setup.ChildrenOfType<ResourcesSection>().First().ChangeAudioTrack(Path.Combine(extractedFolder, "03. Renatus - Soleily 192kbps.mp3"));

                File.Delete(temp);
                Directory.Delete(extractedFolder, true);

                return success;
            });

            AddAssert("track length changed", () => Beatmap.Value.Track.Length > 60000);
        }

        [Test]
        public void TestCreateNewDifficulty()
        {
            string firstDifficultyName = Guid.NewGuid().ToString();
            string secondDifficultyName = Guid.NewGuid().ToString();

            AddStep("set unique difficulty name", () => EditorBeatmap.BeatmapInfo.DifficultyName = firstDifficultyName);
            AddStep("save beatmap", () => Editor.Save());
            AddAssert("new beatmap persisted", () =>
            {
                var beatmap = beatmapManager.QueryBeatmap(b => b.DifficultyName == firstDifficultyName);
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == EditorBeatmap.BeatmapInfo.BeatmapSet.ID);

                return beatmap != null
                       && beatmap.DifficultyName == firstDifficultyName
                       && set != null
                       && set.PerformRead(s => s.Beatmaps.Single().ID == beatmap.ID);
            });
            AddAssert("can save again", () => Editor.Save());

            AddStep("create new difficulty", () => Editor.CreateNewDifficulty(new OsuRuleset().RulesetInfo));
            AddUntilStep("wait for created", () =>
            {
                string difficultyName = Editor.ChildrenOfType<EditorBeatmap>().SingleOrDefault()?.BeatmapInfo.DifficultyName;
                return difficultyName != null && difficultyName != firstDifficultyName;
            });

            AddStep("set unique difficulty name", () => EditorBeatmap.BeatmapInfo.DifficultyName = secondDifficultyName);
            AddStep("save beatmap", () => Editor.Save());
            AddAssert("new beatmap persisted", () =>
            {
                var beatmap = beatmapManager.QueryBeatmap(b => b.DifficultyName == secondDifficultyName);
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == EditorBeatmap.BeatmapInfo.BeatmapSet.ID);

                return beatmap != null
                       && beatmap.DifficultyName == secondDifficultyName
                       && set != null
                       && set.PerformRead(s => s.Beatmaps.Count == 2 && s.Beatmaps.Any(b => b.DifficultyName == secondDifficultyName));
            });
        }

        [Test]
        public void TestCreateNewBeatmapFailsWithBlankNamedDifficulties()
        {
            Guid setId = Guid.Empty;

            AddStep("retrieve set ID", () => setId = EditorBeatmap.BeatmapInfo.BeatmapSet!.ID);
            AddStep("save beatmap", () => Editor.Save());
            AddAssert("new beatmap persisted", () =>
            {
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == setId);
                return set != null && set.PerformRead(s => s.Beatmaps.Count == 1 && s.Files.Count == 1);
            });

            AddStep("try to create new difficulty", () => Editor.CreateNewDifficulty(new OsuRuleset().RulesetInfo));
            AddAssert("beatmap set unchanged", () =>
            {
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == setId);
                return set != null && set.PerformRead(s => s.Beatmaps.Count == 1 && s.Files.Count == 1);
            });
        }

        [Test]
        public void TestCreateNewBeatmapFailsWithSameNamedDifficulties()
        {
            Guid setId = Guid.Empty;
            const string duplicate_difficulty_name = "duplicate";

            AddStep("retrieve set ID", () => setId = EditorBeatmap.BeatmapInfo.BeatmapSet!.ID);
            AddStep("set difficulty name", () => EditorBeatmap.BeatmapInfo.DifficultyName = duplicate_difficulty_name);
            AddStep("save beatmap", () => Editor.Save());
            AddAssert("new beatmap persisted", () =>
            {
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == setId);
                return set != null && set.PerformRead(s => s.Beatmaps.Count == 1 && s.Files.Count == 1);
            });

            AddStep("create new difficulty", () => Editor.CreateNewDifficulty(new OsuRuleset().RulesetInfo));
            AddUntilStep("wait for created", () =>
            {
                string difficultyName = Editor.ChildrenOfType<EditorBeatmap>().SingleOrDefault()?.BeatmapInfo.DifficultyName;
                return difficultyName != null && difficultyName != duplicate_difficulty_name;
            });

            AddStep("set difficulty name", () => EditorBeatmap.BeatmapInfo.DifficultyName = duplicate_difficulty_name);
            AddStep("try to save beatmap", () => Editor.Save());
            AddAssert("beatmap set not corrupted", () =>
            {
                var set = beatmapManager.QueryBeatmapSet(s => s.ID == setId);
                // the difficulty was already created at the point of the switch.
                // what we want to check is that both difficulties do not use the same file.
                return set != null && set.PerformRead(s => s.Beatmaps.Count == 2 && s.Files.Count == 2);
            });
        }
    }
}