// 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 osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Shapes;
using osu.Game.Graphics;
using osu.Game.Graphics.Sprites;
using osu.Game.Overlays;
using osu.Framework.Graphics.UserInterface;
using osu.Game.Graphics.UserInterface;
using osu.Framework.Graphics.Cursor;
using osu.Game.Graphics.Containers;
using osu.Game.Online.API;
using osu.Game.Online.API.Requests.Responses;
using osu.Game.Online.Chat;
using osu.Game.Resources.Localisation.Web;
using osu.Game.Localisation;
using osu.Game.Online.Multiplayer;

namespace osu.Game.Users
{
    public abstract partial class UserPanel : OsuClickableContainer, IHasContextMenu
    {
        public readonly APIUser User;

        /// <summary>
        /// Perform an action in addition to showing the user's profile.
        /// This should be used to perform auxiliary tasks and not as a primary action for clicking a user panel (to maintain a consistent UX).
        /// </summary>
        public new Action? Action;

        protected Action ViewProfile { get; private set; } = null!;

        protected Drawable Background { get; private set; } = null!;

        protected UserPanel(APIUser user)
            : base(HoverSampleSet.Button)
        {
            ArgumentNullException.ThrowIfNull(user);

            User = user;
        }

        [Resolved]
        private UserProfileOverlay? profileOverlay { get; set; }

        [Resolved]
        private IAPIProvider api { get; set; } = null!;

        [Resolved]
        private ChannelManager? channelManager { get; set; }

        [Resolved]
        private ChatOverlay? chatOverlay { get; set; }

        [Resolved]
        protected OverlayColourProvider? ColourProvider { get; private set; }

        [Resolved]
        protected OsuColour Colours { get; private set; } = null!;

        [Resolved]
        private MultiplayerClient? multiplayerClient { get; set; }

        [BackgroundDependencyLoader]
        private void load()
        {
            Masking = true;

            AddRange(new[]
            {
                new Box
                {
                    RelativeSizeAxes = Axes.Both,
                    Colour = ColourProvider?.Background5 ?? Colours.Gray1
                },
                Background = new UserCoverBackground
                {
                    RelativeSizeAxes = Axes.Both,
                    Anchor = Anchor.Centre,
                    Origin = Anchor.Centre,
                    User = User,
                },
                CreateLayout()
            });

            base.Action = ViewProfile = () =>
            {
                Action?.Invoke();
                profileOverlay?.ShowUser(User);
            };
        }

        protected abstract Drawable CreateLayout();

        protected OsuSpriteText CreateUsername() => new OsuSpriteText
        {
            Font = OsuFont.GetFont(size: 16, weight: FontWeight.Bold),
            Shadow = false,
            Text = User.Username,
        };

        public MenuItem[] ContextMenuItems
        {
            get
            {
                List<MenuItem> items = new List<MenuItem>
                {
                    new OsuMenuItem(ContextMenuStrings.ViewProfile, MenuItemType.Highlighted, ViewProfile)
                };

                if (!User.Equals(api.LocalUser.Value))
                {
                    items.Add(new OsuMenuItem(UsersStrings.CardSendMessage, MenuItemType.Standard, () =>
                    {
                        channelManager?.OpenPrivateChannel(User);
                        chatOverlay?.Show();
                    }));
                }

                if (
                    // TODO: uncomment this once lazer / osu-web is updating online states
                    // User.IsOnline &&
                    multiplayerClient?.Room != null &&
                    multiplayerClient.Room.Users.All(u => u.UserID != User.Id)
                )
                {
                    items.Add(new OsuMenuItem(ContextMenuStrings.InvitePlayer, MenuItemType.Standard, () => multiplayerClient.InvitePlayer(User.Id)));
                }

                return items.ToArray();
            }
        }
    }
}