using System;
using System.Collections.Generic;
using Firebase.RemoteConfig;
using Guru;
using Guru.LitJson;
using UnityEngine;

namespace Guru
{
    
    
    /// <summary>
    /// ABTEST 管理器
    /// </summary>
    public class ABTestManager : Singleton<ABTestManager>
    {

        private FirebaseRemoteConfig _remoteConfig;

        private List<ABParamData> _params;

        
        #region 初始化
        
        /// <summary>
        ///  初始化
        /// </summary>
        public static void Init()
        {
            try
            {
                Instance.Setup();
            }
            catch (Exception e)
            {
                Debug.LogError(e);
            }
            
        }
        
        /// <summary>
        /// 安装服务
        /// </summary>
        private void Setup()
        {
            Debug.Log($"[AB] --- <color=#88ff00>ABTest Init</color>");
            _params = new List<ABParamData>();
            
            _remoteConfig = FirebaseRemoteConfig.DefaultInstance;
            
            string strValue;
            foreach (var key in _remoteConfig.Keys)
            {
                strValue = _remoteConfig.GetValue(key).StringValue;
                AddParam(strValue);
            }
            
            // ------- ABTest -----------
            // Debug.Log($"<color=orange> --- start parse test string --- </color>");
            // var testStr = @"{""enabled"":true,""value"":2,""id"":""B"",""guru_ab_23100715"":""B""}";
            // AddParam(testStr);
            
            if (_params.Count > 0)
            {
                for (int i = 0; i < _params.Count; i++)
                {
                    // 上报实验AB属性
                    GuruAnalytics.SetUserProperty(_params[i].id, _params[i].group);
#if UNITY_EDITOR
                    Debug.Log($"[AB] --- Add AB Param <color=cyan>{_params[i].ToString()}</color>");
#else
                    Debug.Log($"[AB] --- Add AB Param {_params[i].ToString()}");
#endif
                }
            }
        
        }
        
        #endregion
        
        #region 添加AB参数

        /// <summary>
        /// 添加AB参数
        /// </summary>
        /// <param name="value"></param>
        private void AddParam(string value)
        {
            if (!string.IsNullOrEmpty(value) && value.Contains("guru_ab_"))
            {
                _params.Add(ABParamData.Parse(value)); // 添加参数
            }
        }
        
        #endregion

        #region 单元测试

        public static void TestConfig(string json)
        {
            var p = ABParamData.Parse(json);
            if (p == null)
            {
                Debug.LogError($"Could not parse config: {json}");
                return;
            }

            if (!string.IsNullOrEmpty(p.group))
            {
                Debug.Log($"ID: <color=#88ff00>{p.id}</color>");
                Debug.Log($"Group: <color=#88ff00>{p.group}</color>");
                Debug.Log($"Value: <color=#88ff00>{p.value}</color>");
            }
        }
        
        #endregion
    }
    
    [Serializable]
    internal class ABParamData
    {
        private const int PARAM_NAME_LENGTH = 23; // 从开始"ab_" 计算, 往后20个字符
        
        public string id;
        public string group;
        public string value;
        
        public static ABParamData Parse(string value)
        {
            Debug.Log($"--- ABParamData.Parse: {value}");
            var p = new ABParamData();
            p.value = value;
            
            // 发现Guru AB测试标志位
            var dict = JsonMapper.ToObject<Dictionary<string, JsonData>>(value);
            if (null != dict)
            {
                foreach (var k in dict.Keys)
                {
                    if (k.StartsWith("guru_ab"))
                    {
                        p.id = GetItemKey(k);
                        p.group = dict[k].ToString();
                        // Debug.Log($"[AB] add property {k}: {dict[k]}");
                        break;
                    }
                }
            }
            
            return p;
        }

        private static string GetItemKey(string raw)
        {
            var h = raw.Replace("guru_", "");
            var key = h.Substring(0, Mathf.Min(PARAM_NAME_LENGTH, h.Length)); // 最大长度23
            return key; 
        }

        /// <summary>
        /// 输出字符串
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            return $"{id} : {group}";
        }

    }

}