using OfficeOpenXml.Drawing;
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using LicenseContext = OfficeOpenXml.LicenseContext;
using System.Reflection;
using System.Xml.Linq;
using OfficeOpenXml.Style;
using System.Data.Common;

namespace UnvisableComponents
{
    public partial class ExcelHead : Component
        
    {
        public ExcelHead()
        {
            InitializeComponent();
        }

        public ExcelHead(IContainer container)
        {
            container.Add(this);

            InitializeComponent();
        }
        public void Load<T>(ExcelInfo<T> info) where T:class
        {
            ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
            Check<T>(info);
            List<string> fields = new List<string>();
            using (ExcelPackage excelPackage = new ExcelPackage())
            {
                excelPackage.Workbook.Properties.Author = "Qawithexperts";
                excelPackage.Workbook.Properties.Title = "test Excel";
                excelPackage.Workbook.Properties.Subject = "Write in Excel";
                excelPackage.Workbook.Properties.Created = DateTime.Now;

                ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet 1");
                worksheet.Cells["A1"].Value = info.Title;
                int posString = 2;
                int posColumn = 1;
                foreach(var step in info.Filds)
                {
                    if(step.Value.Item1.Count == 1)
                    {
                        worksheet.Cells[posString, posColumn, posString, posColumn+1].Merge = true;
                        worksheet.Cells[posString, posColumn].Value = step.Key;
                        worksheet.Cells[posString, posColumn].Style.Fill.PatternType = ExcelFillStyle.Solid;
                        worksheet.Cells[posString, posColumn].Style.Fill.BackgroundColor.SetColor(Color.LightGreen);
                        fields.Add(step.Key);
                        posString++;
                        continue;
                    }
                    worksheet.Cells[posString, posColumn, posString + step.Value.Item1.Count-1, posColumn].Merge = true;
                    worksheet.Cells[posString, posColumn].Value = step.Key;
                    worksheet.Cells[posString, posColumn].Style.TextRotation = 180;
                    worksheet.Cells[posString, posColumn].Style.Fill.PatternType = ExcelFillStyle.Solid;
                    worksheet.Cells[posString, posColumn].Style.Fill.BackgroundColor.SetColor(Color.AliceBlue);
                    worksheet.Column(posColumn).BestFit = true;
                    posColumn++;
                    foreach(var field in step.Value.Item1)
                    {
                        int id = step.Value.Item1.IndexOf(field);
                        worksheet.Cells[posString, posColumn].Value = field;
                        worksheet.Cells[posString, posColumn].Style.Fill.PatternType = ExcelFillStyle.Solid;
                        worksheet.Cells[posString, posColumn].Style.Fill.BackgroundColor.SetColor(Color.AliceBlue);
                        worksheet.Row(posString).Height = step.Value.Item2[id];
                        fields.Add(field);
                        posString++;
                    }
                    posColumn--;
                }
                posColumn = 3;
                foreach (var step in info.Dates)
                {
                    posString = 2;
                    
                    var type = step.GetType();
                    foreach(var field in fields)
                    {
                        worksheet.Cells[posString, posColumn].Value = 
                            type.GetField(field) == null ? type.GetProperty(field).GetValue(step) : type.GetField(field).GetValue(step);
                        posString++;
                    }
                    posColumn++;
                }
                CheckTable(worksheet, fields.Count, info.Dates.Count);
                FileInfo fi = new FileInfo(info.Path);
                excelPackage.SaveAs(fi);
            }
        }
        public void Check<T>(ExcelInfo<T> info) where T : class
        {
            if (string.IsNullOrEmpty(info.Title))
                throw new Exception("Забыли заглавие");
            if (string.IsNullOrEmpty(info.Path))
                throw new Exception("Забыли путь");
            if (!info.Path.EndsWith(".xlsx"))
                info.Path += ".xlsx";
            if (info.Dates.Count == 0)
                throw new Exception("забыли данные");
            

        }
        public void CheckTable(ExcelWorksheet worksheet, int rows, int columns)
        {
            int posString = 2;
            int posColumn = 1;
            rows += posString;
            columns += posColumn;
            while(posString < rows)
            {
                while (posColumn < columns)
                {
                    if (worksheet.Cells[posString, posColumn].Value == null && !worksheet.Cells[posString, posColumn - 1 ,posString, posColumn].Merge)
                        throw new Exception("Пустая ячейка");
                    posColumn++;
                }
                    posString++;
            }
            posString = 2;
            posColumn = 3 + columns;
            while(posString < rows )
            {
                if (worksheet.Cells[posString, posColumn].Value != null)
                    throw new Exception("Выход за границы");
                posString++;
            }
            posString = 2 + rows;
            posColumn = 1;
            while (posColumn < columns)
            {
                if (worksheet.Cells[posString, posColumn].Value != null)
                    throw new Exception("Выход за границы");
                posColumn++;
            }
        }
    }
}