// 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.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Cursor;
using osu.Framework.Platform;
using osu.Framework.Screens;
using osu.Framework.Testing;
using osu.Game.Beatmaps;
using osu.Game.Configuration;
using osu.Game.Database;
using osu.Game.Online.API;
using osu.Game.Overlays;
using osu.Game.Overlays.Mods;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Catch;
using osu.Game.Rulesets.Mania;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Osu;
using osu.Game.Rulesets.Osu.Mods;
using osu.Game.Rulesets.Taiko;
using osu.Game.Screens;
using osu.Game.Screens.Footer;
using osu.Game.Screens.Menu;
using osu.Game.Screens.SelectV2.Footer;
using osu.Game.Tests.Resources;
using osuTK.Input;

namespace osu.Game.Tests.Visual.SongSelectV2
{
    public partial class TestSceneSongSelect : ScreenTestScene
    {
        [Cached]
        private readonly ScreenFooter screenScreenFooter;

        [Cached]
        private readonly OsuLogo logo;

        private BeatmapManager beatmapManager = null!;

        protected override bool UseOnlineAPI => true;

        public TestSceneSongSelect()
        {
            Children = new Drawable[]
            {
                new PopoverContainer
                {
                    RelativeSizeAxes = Axes.Both,
                    Child = screenScreenFooter = new ScreenFooter
                    {
                        OnBack = () => Stack.CurrentScreen.Exit(),
                    },
                },
                logo = new OsuLogo
                {
                    Alpha = 0f,
                },
            };
        }

        [BackgroundDependencyLoader]
        private void load(GameHost host, IAPIProvider onlineAPI)
        {
            BeatmapStore beatmapStore;
            BeatmapUpdater beatmapUpdater;
            BeatmapDifficultyCache difficultyCache;

            // These DI caches are required to ensure for interactive runs this test scene doesn't nuke all user beatmaps in the local install.
            // At a point we have isolated interactive test runs enough, this can likely be removed.
            Dependencies.Cache(new RealmRulesetStore(Realm));
            Dependencies.Cache(Realm);
            Dependencies.Cache(difficultyCache = new BeatmapDifficultyCache());
            Dependencies.Cache(beatmapManager = new BeatmapManager(LocalStorage, Realm, onlineAPI, Audio, Resources, host, Beatmap.Default, difficultyCache));
            Dependencies.CacheAs(beatmapUpdater = new BeatmapUpdater(beatmapManager, difficultyCache, onlineAPI, LocalStorage));
            Dependencies.CacheAs(beatmapStore = new RealmDetachedBeatmapStore());

            beatmapManager.ProcessBeatmap = (set, scope) => beatmapUpdater.Process(set, scope);

            MusicController music;
            Dependencies.Cache(music = new MusicController());

            // required to get bindables attached
            Add(difficultyCache);
            Add(music);
            Add(beatmapStore);

            Dependencies.Cache(new OsuConfigManager(LocalStorage));
        }

        protected override void LoadComplete()
        {
            base.LoadComplete();

            Stack.ScreenPushed += updateFooter;
            Stack.ScreenExited += updateFooter;
        }

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

            AddStep("load screen", () => Stack.Push(new Screens.SelectV2.SongSelectV2()));
            AddUntilStep("wait for load", () => Stack.CurrentScreen is Screens.SelectV2.SongSelectV2 songSelect && songSelect.IsLoaded);
            AddStep("import test beatmap", () => beatmapManager.Import(TestResources.GetTestBeatmapForImport()));
        }

        [Test]
        public void TestRulesets()
        {
            AddStep("set osu ruleset", () => Ruleset.Value = new OsuRuleset().RulesetInfo);
            AddStep("set taiko ruleset", () => Ruleset.Value = new TaikoRuleset().RulesetInfo);
            AddStep("set catch ruleset", () => Ruleset.Value = new CatchRuleset().RulesetInfo);
            AddStep("set mania ruleset", () => Ruleset.Value = new ManiaRuleset().RulesetInfo);
        }

        #region Footer

        [Test]
        public void TestMods()
        {
            AddStep("one mod", () => SelectedMods.Value = new List<Mod> { new OsuModHidden() });
            AddStep("two mods", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock() });
            AddStep("three mods", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModDoubleTime() });
            AddStep("four mods", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModDoubleTime(), new OsuModClassic() });
            AddStep("five mods", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModDoubleTime(), new OsuModClassic(), new OsuModDifficultyAdjust() });

            AddStep("modified", () => SelectedMods.Value = new List<Mod> { new OsuModDoubleTime { SpeedChange = { Value = 1.2 } } });
            AddStep("modified + one", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModDoubleTime { SpeedChange = { Value = 1.2 } } });
            AddStep("modified + two", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModDoubleTime { SpeedChange = { Value = 1.2 } } });
            AddStep("modified + three",
                () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModClassic(), new OsuModDoubleTime { SpeedChange = { Value = 1.2 } } });
            AddStep("modified + four",
                () => SelectedMods.Value = new List<Mod>
                    { new OsuModHidden(), new OsuModHardRock(), new OsuModClassic(), new OsuModDifficultyAdjust(), new OsuModDoubleTime { SpeedChange = { Value = 1.2 } } });

            AddStep("clear mods", () => SelectedMods.Value = Array.Empty<Mod>());
            AddWaitStep("wait", 3);
            AddStep("one mod", () => SelectedMods.Value = new List<Mod> { new OsuModHidden() });

            AddStep("clear mods", () => SelectedMods.Value = Array.Empty<Mod>());
            AddWaitStep("wait", 3);
            AddStep("five mods", () => SelectedMods.Value = new List<Mod> { new OsuModHidden(), new OsuModHardRock(), new OsuModDoubleTime(), new OsuModClassic(), new OsuModDifficultyAdjust() });
        }

        [Test]
        public void TestShowOptions()
        {
            AddStep("enable options", () =>
            {
                var optionsButton = this.ChildrenOfType<ScreenFooterButton>().Last();

                optionsButton.Enabled.Value = true;
                optionsButton.TriggerClick();
            });
        }

        [Test]
        public void TestState()
        {
            AddToggleStep("set options enabled state", state => this.ChildrenOfType<ScreenFooterButton>().Last().Enabled.Value = state);
        }

        // add these test cases when functionality is implemented.
        // [Test]
        // public void TestFooterRandom()
        // {
        //     AddStep("press F2", () => InputManager.Key(Key.F2));
        //     AddAssert("next random invoked", () => nextRandomCalled && !previousRandomCalled);
        // }
        //
        // [Test]
        // public void TestFooterRandomViaMouse()
        // {
        //     AddStep("click button", () =>
        //     {
        //         InputManager.MoveMouseTo(randomButton);
        //         InputManager.Click(MouseButton.Left);
        //     });
        //     AddAssert("next random invoked", () => nextRandomCalled && !previousRandomCalled);
        // }
        //
        // [Test]
        // public void TestFooterRewind()
        // {
        //     AddStep("press Shift+F2", () =>
        //     {
        //         InputManager.PressKey(Key.LShift);
        //         InputManager.PressKey(Key.F2);
        //         InputManager.ReleaseKey(Key.F2);
        //         InputManager.ReleaseKey(Key.LShift);
        //     });
        //     AddAssert("previous random invoked", () => previousRandomCalled && !nextRandomCalled);
        // }
        //
        // [Test]
        // public void TestFooterRewindViaShiftMouseLeft()
        // {
        //     AddStep("shift + click button", () =>
        //     {
        //         InputManager.PressKey(Key.LShift);
        //         InputManager.MoveMouseTo(randomButton);
        //         InputManager.Click(MouseButton.Left);
        //         InputManager.ReleaseKey(Key.LShift);
        //     });
        //     AddAssert("previous random invoked", () => previousRandomCalled && !nextRandomCalled);
        // }
        //
        // [Test]
        // public void TestFooterRewindViaMouseRight()
        // {
        //     AddStep("right click button", () =>
        //     {
        //         InputManager.MoveMouseTo(randomButton);
        //         InputManager.Click(MouseButton.Right);
        //     });
        //     AddAssert("previous random invoked", () => previousRandomCalled && !nextRandomCalled);
        // }

        [Test]
        public void TestOverlayPresent()
        {
            AddStep("Press F1", () =>
            {
                InputManager.MoveMouseTo(this.ChildrenOfType<ScreenFooterButtonMods>().Single());
                InputManager.Click(MouseButton.Left);
            });
            AddAssert("Overlay visible", () => this.ChildrenOfType<ModSelectOverlay>().Single().State.Value == Visibility.Visible);
            AddStep("Hide", () => this.ChildrenOfType<ModSelectOverlay>().Single().Hide());
        }

        #endregion

        private void updateFooter(IScreen? _, IScreen? newScreen)
        {
            if (newScreen is IOsuScreen osuScreen && osuScreen.ShowFooter)
            {
                screenScreenFooter.Show();
                screenScreenFooter.SetButtons(osuScreen.CreateFooterButtons());
            }
            else
            {
                screenScreenFooter.Hide();
                screenScreenFooter.SetButtons(Array.Empty<ScreenFooterButton>());
            }
        }
    }
}