using Rs.DataAccess;
using Rs.Framework;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Rs.Controls
{
    public class SysParameter
    {
        public int ID { get; set; }
        public string FieldName { get; set; }
        public string FieldType { get; set; }
        public string FieldValue { get; set; }
        public string Desc { get; set; }
        public string Category { get; set; }
    }


    public static class SysConfigParam
    {
        static SqliteHelper db = new SqliteHelper();
        static Dictionary<string, SysParameter> sysParamDic = new Dictionary<string, SysParameter>();

        public static void Init()
        {
            sysParamDic.Clear();
            string querySql = "select * from SysParameter";
            DataTable dtParameters = db.GetDataTable(querySql);
            if (dtParameters != null && dtParameters.Rows.Count > 0)
            {
                foreach (DataRow row in dtParameters.Rows)
                {
                    SysParameter parm = EntityHelper.ToEntity<SysParameter>(row);
                    if (parm != null)
                    {
                        if (!sysParamDic.ContainsKey(parm.FieldName))
                        {
                            sysParamDic.Add(parm.FieldName, parm);
                        }
                    }
                }
            }
        }

        public static T GetValue<T>(string key)
        {
            if (sysParamDic.ContainsKey(key))
            {
                SysParameter parm = sysParamDic[key];

                return (T)Convert.ChangeType(parm.FieldValue, typeof(T));
            }
            return default(T);
        }
       
        public static int Update(string key,string value,string descAndCategory="")
        {
            if(!sysParamDic.ContainsKey(key))
            {
                string desc = "", category = "";
                if(!string.IsNullOrEmpty(descAndCategory))
                {
                    string[] items= descAndCategory.Split(',');
                    if(items.Length==2)
                    {
                        desc = items[0];
                        category = items[1];
                    }
                }
                string insertSql = $"insert into SysParameter(FieldName,FieldType,FieldValue,Desc,Category) values('{key}','string','{value}','{desc}','{category}')";
                int count = db.ExecuteNonQuery(insertSql) ;
                if (count > 0)
                {
                    Init();
                    return count;
                }
                return 0;
            }
            else
            {
                string updateSql = $"update SysParameter set FieldValue='{value}' where FieldName='{key}'";
                int count = db.ExecuteNonQuery(updateSql);
                if (count > 0)
                {
                    //Init();
                    string querySql = $"select * from SysParameter where FieldName='{key}' ";
                    DataTable dtParameters = db.GetDataTable(querySql);
                    if (dtParameters != null && dtParameters.Rows.Count > 0)
                    {
                        SysParameter parm = EntityHelper.ToEntity<SysParameter>(dtParameters.Rows[0]);
                        sysParamDic.Remove(key);
                        sysParamDic.Add(key, parm);
                    }
                    return count;
                }
                return 0;
            }
            
        }
    }
}