using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

namespace TcgEngine.UI
{
    /// <summary>
    /// Leaderboard panel contains the ranking of all top players
    /// </summary>

    public class LeaderboardPanel : UIPanel
    {
        #region 默认排行榜
        public RectTransform content;
        public RankLine line_template;
        public RankLine my_line;
        public float line_spacing = 80f;
        #endregion

        #region 天梯排行榜

        public RectTransform ladderContent;
        public LadderRankLine ladderLine_template;
        public LadderRankLine my_ladderLine;
        public float ladderLine_spacing = 120f;

        #endregion

        public Text test_text;

        public bool isLadderRank = true;
        public UIPanel defaultRank;
        public UIPanel ladderRank;
        
        public List<RankLine> lines = new List<RankLine>();
        public List<LadderRankLine> ladderLines = new List<LadderRankLine>();
        
        private const string DefaultAvatarId = "bear";

        private static LeaderboardPanel instance;

        #region 临时方法

        [SerializeField] private Button defaultRankButton;
        [SerializeField] private Button ladderRankButton;

        #endregion


        protected override void Awake()
        {
            base.Awake();
            instance = this;
            //lines = scroll_content.GetComponentsInChildren<RankLine>();

            my_line.onClick += OnClickLine;
            InitLines();

            #region 临时方法

            defaultRankButton.onClick.AddListener(() =>
            {
                isLadderRank = false;
                RankPanelColl();
            });
            ladderRankButton.onClick.AddListener(() =>
            {
                isLadderRank = true;
                RankPanelColl();
            });

            #endregion

            
        }

        private void OnDestroy()
        {

        }

        private void InitLines()
        {
            #region 加载默认排行榜

            for (int i = 0; i < content.transform.childCount; i++)
                Destroy(content.transform.GetChild(i).gameObject);

            int nlines = 100;
            for (int i = 0; i < nlines; i++)
            {
                RankLine line = AddLine(line_template, i);
                lines.Add(line);
            }

            content.sizeDelta = new Vector2(content.sizeDelta.x, nlines * line_spacing + 20f);
            
            #endregion

            #region 加载天梯排行榜

            for (int i = 0; i < ladderContent.transform.childCount; i++)
                Destroy(ladderContent.transform.GetChild(i).gameObject);

            int ladderNlines = 100;
            for (int i = 0; i < ladderNlines; i++)
            {
                LadderRankLine line = LadderAddLine(ladderLine_template, i);
                ladderLines.Add(line);
            }

            ladderContent.sizeDelta = new Vector2(content.sizeDelta.x, ladderNlines * line_spacing + 20f);

            #endregion
        }

        private RankLine AddLine(RankLine template, int index)
        {
            Vector2 pos = Vector2.down * line_spacing;
            GameObject line = Instantiate(template.gameObject, content);
            RectTransform rtrans = line.GetComponent<RectTransform>();
            RankLine rline = line.GetComponent<RankLine>();
            rtrans.anchorMin = new Vector2(0.5f, 1f);
            rtrans.anchorMax = new Vector2(0.5f, 1f);
            rtrans.anchoredPosition = pos + Vector2.down * index * line_spacing;
            rline.onClick += OnClickLine;
            return rline;
        }

        private LadderRankLine LadderAddLine(LadderRankLine template, int index)
        {
            Vector2 pos = Vector2.down * ladderLine_spacing;
            GameObject line = Instantiate(template.gameObject, ladderContent);
            RectTransform rtrans = line.GetComponent<RectTransform>();
            LadderRankLine lrline = line.GetComponent<LadderRankLine>();
            rtrans.anchorMin = new Vector2(0.5f, 1);
            rtrans.anchorMax = new Vector2(0.5f, 1f);
            rtrans.anchoredPosition = pos + Vector2.down * index * ladderLine_spacing;
            lrline.onClick += OnClickLine;
            return lrline;
        }

        private async void RefreshPanel()
        {
            my_line.Hide();
            foreach (RankLine line in lines)
                line.Hide();

            test_text.enabled = !Authenticator.Get().IsApi();

            if (!Authenticator.Get().IsApi())
                return;

            UserData udata = ApiClient.Get().UserData;

            int index = 0;
            string url = ApiClient.ServerURL + "/users";
            WebResponse res = await ApiClient.Get().SendGetRequest(url);

            UserData[] users = ApiTool.JsonToArray<UserData>(res.data);
            List<UserData> sorted_users = new List<UserData>(users);
            sorted_users.Sort((UserData a, UserData b) => { return b.elo.CompareTo(a.elo); });

            int previous_rank = 0;
            int previous_index = 0;

            foreach (UserData user in sorted_users)
            {
                if (user.permission_level != 1 || user.matches == 0)
                    continue; //Dont show admins and user with no matches

                if (user.username == udata.username)
                {
                    my_line.SetLine(user, index + 1, true);
                }

                if (index < lines.Count)
                {
                    RankLine line = lines[index];
                    int rank_order = (previous_rank == user.elo) ? previous_index : index;
                    line.SetLine(user, rank_order + 1, user.username == udata.username);
                    previous_rank = user.elo;
                    previous_index = rank_order;
                }

                index++;
            }

            
        }

        private async void RefreshLadderPanel()
        {
            my_line.Hide();
            foreach (LadderRankLine line in ladderLines)
                line.Hide();
            
            test_text.enabled = !Authenticator.Get().IsApi();

            if (!Authenticator.Get().IsApi())
                return;

            UserData udata = ApiClient.Get().UserData;

            int index = 0;
            string url = ApiClient.ServerURL + "/ladder/leaderboard";
            WebResponse res = await ApiClient.Get().SendGetRequest(url);

            LadderLeaderboardEntry[] users = ApiTool.JsonToArray<LadderLeaderboardEntry>(res.data);
            List<LadderLeaderboardEntry> sorted_users = new List<LadderLeaderboardEntry>(users);
            sorted_users.Sort((a, b) =>
            {
                return a.position.CompareTo(b.position);
            });
            
            int previous_rank = 0;
            int previous_index = 0;
            

            
            if (users == null || users.Length == 0)
            {
                Debug.LogError("玩家数据为空");
                return;
            }

            Debug.Log($"收到排行榜数据，共 {users.Length} 条");

            foreach (LadderLeaderboardEntry rankData in sorted_users)
            {
                if (rankData.username == udata.username)
                {
                    my_ladderLine.SetLine(rankData, index + 1, GetAvatar(udata.avatar), rankData.rankId,
                        rankData.rankScore, rankData.stars, true);
                }

                if (index < ladderLines.Count)
                {
                    LadderRankLine line = ladderLines[index];
                    int rank_order = (previous_rank == rankData.position) ? previous_index : index;
                    line.SetLine(rankData, rank_order + 1,GetAvatar(rankData.avatar), rankData.rankId,
                        rankData.rankScore, rankData.stars, false);
                    previous_rank = rankData.position;
                    previous_index = rank_order;
                }
                index++;

            }
            
        }

        private void RankPanelColl()
        {
            if (isLadderRank)
            {
                ladderRank.Show();
                var lColor = ladderRankButton.image.color;
                lColor.a = 0.5f;
                ladderRankButton.image.color = lColor;

                
                defaultRank.Hide();
                var dColor = defaultRankButton.image.color;
                dColor.a = 1f;
                defaultRankButton.image.color = dColor;
            }
            else
            {
                ladderRank.Hide();
                var lColor = ladderRankButton.image.color;
                lColor.a = 1f;
                ladderRankButton.image.color = lColor;
                
                defaultRank.Show();
                var dColor = defaultRankButton.image.color;
                dColor.a = 0.5f;
                defaultRankButton.image.color = dColor;

            }
            ladderRankButton.enabled = !isLadderRank;
            defaultRankButton.enabled = isLadderRank;
        }

        private void OnClickLine(string username)
        {

        }


        private Sprite GetAvatar(string id)
        {
            string targetId = string.IsNullOrEmpty(id) ? DefaultAvatarId : id;
            AvatarData avaData = AvatarData.Get(targetId);
            return avaData != null ? avaData.GetAvatar() : null;
        }


        public override void Show(bool instant = false)
        {
            base.Show(instant);
            RefreshPanel();
            RefreshLadderPanel();
            RankPanelColl();
        }

        public void OnClickBack()
        {
            Hide();
        }

        public static LeaderboardPanel Get()
        {
            return instance;
        }
    }
}