using AxibugEmuOnline.Client.ClientCore;
using AxibugEmuOnline.Client.Event;
using AxibugEmuOnline.Client.Manager;
using AxibugEmuOnline.Client.UI;
using AxibugProtobuf;
using UnityEngine;
using UnityEngine.UI;
using Debug = System.Diagnostics.Debug;

namespace AxibugEmuOnline.Client
{
	public class RoomItem : MenuItem, IVirtualItem
	{
		[SerializeField] Image m_roomPreview;
		[SerializeField] Slider m_downloadProgress;
		[SerializeField] GameObject m_downloadingFlag;
		[SerializeField] GameObject m_romReadyFlag;

		private RomFile m_romFile;

		public int Index { get; set; }
		public int RoomID { get; private set; }

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

			Eventer.Instance.RegisterEvent<int>(EEvent.OnRoomListSingleUpdate, OnRoomSignelUpdate);
		}

		private void OnRoomSignelUpdate(int roomID)
		{
			if (this.RoomID != roomID) return;

			Protobuf_Room_MiniInfo roomInfo;
			if (App.roomMgr.GetRoomListMiniInfo(roomID, out roomInfo))
				UpdateUI(roomInfo);
		}

		public void SetData(object data)
		{
			Debug.Assert(data is Protobuf_Room_MiniInfo);

			var roomInfo = (Protobuf_Room_MiniInfo)data;
			RoomID = roomInfo.RoomID;

			UpdateUI(roomInfo);
		}

		public override bool OnEnterItem()
		{
			if (m_romFile == null) return false;

			if (!m_romFile.RomReady)
			{
				m_romFile.BeginDownload();
				return false;
			}
			else
			{
				Protobuf_Room_MiniInfo MiniInfo;
				if (!App.roomMgr.GetRoomListMiniInfo(RoomID, out MiniInfo))
				{
					OverlayManager.PopTip("房间不存在");
					return false;
				}
				int[] freeSlots;
				if (!MiniInfo.GetFreeSlot(out freeSlots))
				{
					OverlayManager.PopTip("无空闲位置");
					return false;
				}

				App.roomMgr.SendJoinRoom(RoomID);
				return true;
			}
		}

		private void UpdateUI(Protobuf_Room_MiniInfo roomInfo)
		{
			var hostNick = roomInfo.GetHostNickName();
			int cur; int max;

			roomInfo.GetRoomPlayers(out cur, out max);
			SetBaseInfo("--", $"<b>{hostNick}</b>的房间", $"{cur}/{max}");
			SetIcon(null);

			roomInfo.FetchRomFileInRoomInfo(EnumPlatform.NES, (room, romFile) =>
			{
				if (room.RoomID != RoomID) return;

				m_romFile = romFile;
				Txt.text = romFile.Alias;

				UpdateRomInfoView();
				App.CacheMgr.GetSpriteCache(romFile.ImageURL, OnGetRomImage);
			});
		}

		protected override void Update()
		{
			UpdateRomInfoView();
			base.Update();
		}

		private void UpdateRomInfoView()
		{
			float? downloadingProgress = null;
			bool romReady = false;

			if (m_romFile != null)
			{
				if (m_romFile.IsDownloading)
					downloadingProgress = m_romFile.Progress;
				if (m_romFile.RomReady)
					romReady = true;
			}

			m_downloadingFlag.SetActiveEx(downloadingProgress.HasValue);
			if (downloadingProgress.HasValue)
				m_downloadProgress.value = downloadingProgress.Value;

			m_romReadyFlag.SetActiveEx(romReady);
		}

		private void OnGetRomImage(Sprite sprite, string url)
		{
			if (m_romFile == null) return;
			if (m_romFile.ImageURL != url) return;

			SetIcon(sprite);
		}

		public void SetDependencyProperty(object data)
		{
			SetSelectState((data is ThirdMenuRoot && ((ThirdMenuRoot)data).SelectIndex == Index));
		}

		public void Release()
		{
			Reset();
		}
	}
}