using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

namespace ddq
{
    public class Utility
    {

        public static readonly Dictionary<int, string> RoleType = new Dictionary<int, string>
        {
            { 1, "Portfolio Manager" },
            { 2, "Researcher"},
            { 3, "Contactor"},
            { 4, "Marketing"},
            { 5, "Risk & Compliance"},
            { 6, "Executive"},
            { 7, "Legal"},
            { 8, "Trading"},
            { 9, "Technology"},
            { 0, "Other"}

        };

        public class DDData
        {
            public object value { get; set; }

            public string userId { get; set; }

            public string updateTime { get; set; }
        };


        /// <summary>
        /// JsonElment 转为字符串，若输入为空则输出""
        /// </summary>
        /// <param name="jsonElement"></param>
        /// <returns></returns>
        public static string Json2Text(JsonElement jsonElement, string propertyName)
        {

            string ret = null;

            JsonElement elm;

            if (propertyName == null) return ret;

            bool hasProperty = jsonElement.TryGetProperty(propertyName, out elm);

            if (hasProperty == true && elm.ValueKind != JsonValueKind.Undefined)
            {
                ret = elm.ToString();
            }

            return ret;
        }

        /// <summary>
        /// JsonElment 转为字符串，若输入为空则输出""
        /// </summary>
        /// <param name="jsonElement"></param>
        /// <returns></returns>
        public static DDData Json2Text2(JsonElement jsonElement, string propertyName)
        {

            DDData ret = new DDData();

            JsonElement elm;

            if (propertyName == null) return ret;

            bool hasProperty = jsonElement.TryGetProperty(propertyName, out elm);

            if (hasProperty == true && elm.ValueKind != JsonValueKind.Undefined)
            {

                ret.value = elm.GetProperty("v").ToString();
                ret.userId = elm.GetProperty("u").ToString();
                ret.updateTime = elm.GetProperty("t").ToString();
                
            }

            return ret;
        }

        public static bool Json2Boolean(JsonElement jsonElement, string propertyName)
        {
            bool ret = false;
            JsonElement elm;

            if (propertyName == null) return ret;

            bool hasProperty = jsonElement.TryGetProperty(propertyName, out elm);

            if (hasProperty == true && elm.ValueKind != JsonValueKind.Undefined)
            {
                ret = (elm.ValueKind == JsonValueKind.True);
            }

            return ret;
        }


        public static DataTable Json2Table(JsonElement jsonElement)
        {

            bool hasData = jsonElement.TryGetProperty("v", out JsonElement elm);

            if (!hasData) return null;

            DataTable dataTable = new DataTable();

            // 如果解析出的是数组
            if (elm.ValueKind == JsonValueKind.Array)
            {
                // 遍历数组元素
                foreach (JsonElement element in elm.EnumerateArray())
                {
                    // 如果是第一次遍历，元素包含列定义信息，需要创建列
                    if (dataTable.Columns.Count == 0)
                    {
                        // 遍历第一个对象的属性来创建列
                        foreach (JsonProperty property in element.EnumerateObject())
                        {
                            dataTable.Columns.Add(property.Name);
                        }
                    }

                    // 创建新行并填充数据
                    DataRow newRow = dataTable.NewRow();
                    foreach (JsonProperty property in element.EnumerateObject())
                    {
                        newRow[property.Name] = property.Value.ToString();
                    }
                    dataTable.Rows.Add(newRow);
                }
            }

            return dataTable;

        }

        public static DDData Json2Table2(JsonElement jsonElement)
        {

            DDData ret = new DDData();

            JsonElement elm = jsonElement.GetProperty("v");

            DataTable dataTable = new DataTable();

            // 如果解析出的是数组
            if (elm.ValueKind == JsonValueKind.Array)
            {
                
                // 遍历数组元素
                foreach (JsonElement element in elm.EnumerateArray())
                {
                    // 如果是第一次遍历，元素包含列定义信息，需要创建列
                    if (dataTable.Columns.Count == 0)
                    {
                        // 遍历第一个对象的属性来创建列
                        foreach (JsonProperty property in element.EnumerateObject())
                        {
                            dataTable.Columns.Add(property.Name);
                        }
                    }

                    // 创建新行并填充数据
                    DataRow newRow = dataTable.NewRow();
                    foreach (JsonProperty property in element.EnumerateObject())
                    {
                        newRow[property.Name] = property.Value.ToString();
                    }
                    dataTable.Rows.Add(newRow);
                }
            }

            ret.value = dataTable;
            ret.userId = jsonElement.GetProperty("u").ToString();
            ret.updateTime = jsonElement.GetProperty("t").ToString();

            return ret;

        }


        public static List<Dictionary<string, object>> DataTable2List(DataTable dataTable)
        {

            if (dataTable == null) return null;

            var records = new List<Dictionary<string, object>>();

            foreach (DataRow row in dataTable.Rows)
            {
                var record = new Dictionary<string, object>();
                foreach (DataColumn col in dataTable.Columns)
                {
                    // 处理DBNull值
                    record[col.ColumnName] = row[col] == DBNull.Value ? null : row[col];
                }
                records.Add(record);
            }

            return records;
        }

        public static object AddInfo(object input, int userId)
        {
            if (input == null) return null;

            var ret = new
            {
                v = input,
                u = userId,
                t = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
            };

            return ret;
        }


        /// <summary>
        /// 是否在7天内有更新
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public static bool IsChangedRecently(string date)
        {

            bool ret = false;
            
            if (date == null) return ret;

            if (DateTime.TryParse(date, out DateTime newDate))
            {
                if (newDate >= DateTime.Now.AddDays(-7)) ret = true;
            }

            return ret;

        }
    }


}