using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Web.Script.Serialization;
using static TimedUpload.QuartzJobs.SFTPUploadJob;

public class JsonExporter
{
    public void ExportDailyDataToJson(List<DailyData> dailyDataList, string outputDirectory)
    {
        if (!Directory.Exists(outputDirectory))
        {
            Directory.CreateDirectory(outputDirectory);
        }

        var serializer = new JavaScriptSerializer();
        serializer.RegisterConverters(new[] { new CustomJsonConverter() });
        serializer.MaxJsonLength = int.MaxValue;

        foreach (var dailyData in dailyDataList)
        {
            if (dailyData.RecordCount > 0)
            {
                string fileName = $"{dailyData.Date:yyyyMMdd}.json";
                string filePath = Path.Combine(outputDirectory, fileName);

                // 手动构建JSON字符串以确保日期格式正确
                string json = BuildJsonString(dailyData);
                File.WriteAllText(filePath, json, Encoding.UTF8);

                Console.WriteLine($"已导出 {dailyData.Date:yyyy-MM-dd} 的数据，共 {dailyData.RecordCount} 条记录");
            }
        }
    }

    private string BuildJsonString(DailyData dailyData)
    {
        var sb = new StringBuilder();
        sb.Append("{");
        sb.Append($"\"Date\":\"{dailyData.Date:yyyy-MM-dd}\",");
        sb.Append($"\"RecordCount\":{dailyData.RecordCount},");
        sb.Append("\"Records\":[");

        for (int i = 0; i < dailyData.Records.Count; i++)
        {
            var record = dailyData.Records[i];
            sb.Append("{");
            sb.Append($"\"ReadingDT\":\"{record.ReadingDT:yyyy-MM-dd HH:mm:ss}\",");
            sb.Append($"\"Reading\":{record.Reading},");
            sb.Append($"\"ElecAddress\":\"{record.ElecAddress}\"");
            sb.Append("}");

            if (i < dailyData.Records.Count - 1)
            {
                sb.Append(",");
            }
        }

        sb.Append("]}");
        return sb.ToString();
    }

    public void ExportAllToSingleJson(List<DailyData> dailyDataList, string filePath)
    {
        var sb = new StringBuilder();
        sb.Append("[");

        for (int i = 0; i < dailyDataList.Count; i++)
        {
            var dailyData = dailyDataList[i];
            sb.Append("{");
            sb.Append($"\"Date\":\"{dailyData.Date:yyyy-MM-dd}\",");
            sb.Append($"\"RecordCount\":{dailyData.RecordCount},");
            sb.Append("\"Records\":[");

            for (int j = 0; j < dailyData.Records.Count; j++)
            {
                var record = dailyData.Records[j];
                sb.Append("{");
                sb.Append($"\"ReadingDT\":\"{record.ReadingDT:yyyy-MM-dd HH:mm:ss}\",");
                sb.Append($"\"Reading\":{record.Reading},");
                sb.Append($"\"ElecAddress\":\"{record.ElecAddress}\"");
                sb.Append("}");

                if (j < dailyData.Records.Count - 1)
                {
                    sb.Append(",");
                }
            }

            sb.Append("]}");

            if (i < dailyDataList.Count - 1)
            {
                sb.Append(",");
            }
        }

        sb.Append("]");

        File.WriteAllText(filePath, sb.ToString(), Encoding.UTF8);
    }
}