using System.IO;
using UnityEditor;
using UnityEngine;
using Excel;
using System.Data;
using GFGEditor;

namespace GFGEditor
{
    public class ExcelReader
    {
        public delegate void RowCollectionHandler(DataRowCollection rowCollection, string configName, string configArrayName);

        public static void ReadExcel(RowCollectionHandler rowCollectionHandler)
        {
            string[] files = Directory.GetFiles(ExcelConfig.excelsFolderPath);
            int totalCount = files.Length;
            for (int i = 0; i < totalCount; i++)
            {
                string filePath = files[i];
                string fileName = Path.GetFileNameWithoutExtension(filePath);
                if(!fileName.Contains("~"))
                {
                    FileStream stream = File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
                    IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
                    DataSet result = excelReader.AsDataSet();
                    HandleTableCollection(result.Tables, rowCollectionHandler);
                }
            }
        }

        private static void HandleTableCollection(DataTableCollection collection, RowCollectionHandler rowCollectionHandler)
        {
            for (int i = 0; i < collection.Count; i++)
            {
                DataTable table = collection[i];
                HandleTable(table, rowCollectionHandler);
            }
        }

        private static void HandleTable(DataTable table, RowCollectionHandler rowCollectionHandler)
        {
            string[] names = table.TableName.Split('_');
            if (names.Length < 2)
            {
                //未正确命名的表格
                return;
            }
            if (table.TableName.Contains("#"))
            {
                //被注释的表格
                return;
            }
            string configItemName = names[1];
            string managerTag = "";
            if (names.Length > 2)
            {
                managerTag = names[2];
            }
            //文件名及管理器名
            string configManagerName = string.Format(ExcelConfig.CONFIG_ARRAY_TEMPLATE, configItemName, managerTag);
            //获得表数据
            DataRowCollection rowCollection = table.Rows;

            rowCollectionHandler(rowCollection, configItemName, configManagerName);
        }

    }
}