using System.Collections.Generic;
using SepCore.Definition;
using UnityEngine;

namespace SepCore.UI
{
    public class StatContext : UIContext
    {
        public StatRawData RawData { get; }
        public Dictionary<StatType, string> FormattedValues { get; } = new Dictionary<StatType, string>();

        public StatContext()
        {
        }

        public StatContext(StatRawData rawData)
        {
            RawData = rawData;
            if (rawData != null)
            {
                foreach (KeyValuePair<StatType, float> pair in rawData.Values)
                {
                    FormattedValues[pair.Key] = FormatStatValue(pair.Key, pair.Value);
                }
            }
        }

        public string GetFormattedValue(StatType statType)
        {
            return FormattedValues.TryGetValue(statType, out string text) ? text : string.Empty;
        }

        public void SetFormattedValue(StatType statType, string text)
        {
            FormattedValues[statType] = text;
        }

        public static string FormatStatValue(StatType statType, float value)
        {
            StatConfig config = (GameEntry.Luban != null && GameEntry.Luban.IsReady)
                ? GameEntry.Luban.Get<StatConfig>((int)statType)
                : null;

            float baseValue = config?.DefaultBaseValue ?? (statType is StatType.DamagePercent or StatType.AttackSpeed ? 1f : 0f);
            bool isPercent = config?.IsPercentDisplay ?? (statType is StatType.DamagePercent or StatType.AttackSpeed or StatType.CritChance or StatType.Dodge or StatType.LifeSteal);

            string colorTag = null;
            if (value > baseValue + 1e-4f)
            {
                colorTag = "green";
            }
            else if (value < baseValue - 1e-4f)
            {
                colorTag = "red";
            }

            string text;
            if (statType is StatType.DamagePercent or StatType.AttackSpeed)
            {
                // 增伤与攻速基准为 1.0（即 0% 加成）。面板显示相对基准的增量，如 0%、+5%、-10%
                float bonusPercent = (value - 1f) * 100f;
                string sign = bonusPercent > 0 ? "+" : "";
                text = $"{sign}{bonusPercent:0.##}%";
            }
            else if (isPercent || statType == StatType.LifeSteal)
            {
                // 概率/比率属性（暴击率、闪避率、生命窃取）：以百分比形式呈现
                float displayPercent = value * 100f;
                string sign = (value > baseValue && baseValue != 0) ? "+" : "";
                text = $"{sign}{displayPercent:0.##}%";
            }
            else
            {
                if (Mathf.Approximately(value, Mathf.Round(value)))
                {
                    text = Mathf.RoundToInt(value).ToString();
                }
                else
                {
                    text = value.ToString("0.##");
                }
            }

            if (!string.IsNullOrEmpty(colorTag))
            {
                return $"<color={colorTag}>{text}</color>";
            }

            return text;
        }
    }
}