using BankBusinessLogic.OfficePackage.HelperEnums;
using BankBusinessLogic.OfficePackage.HelperModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BankBusinessLogic.OfficePackage
{
    public abstract class AbstractSaveToExcel
    {
        /// <summary>
		/// Создание отчета
		/// </summary>
		/// <param name="info"></param>
		public MemoryStream CreateOperatorReport(ExcelInfo info)
        {
            if (info.Payments == null)
            {
                throw new ArgumentNullException("Данные для отчёта отсутсвуют!", nameof(info.Payments));
            }

            CreateExcel();

            InsertCellInWorksheet(new ExcelCellParameters
            {
                ColumnName = "A",
                RowIndex = 1,
                Text = info.Title,
                StyleInfo = ExcelStyleInfoType.Title
            });

            MergeCells(new ExcelMergeParameters
            {
                CellFromName = "A1",
                CellToName = "C1"
            });

            uint rowIndex = 2;
            foreach (var payment in info.Payments)
            {
                InsertCellInWorksheet(new ExcelCellParameters
                {
                    ColumnName = "A",
                    RowIndex = rowIndex,
                    Text = "Выплата №" + payment.PaymentId,
                    StyleInfo = ExcelStyleInfoType.Text
                });
                rowIndex++;

                foreach (var (PurchaseId, Amount) in payment.Purchases)
                {
                    InsertCellInWorksheet(new ExcelCellParameters
                    {
                        ColumnName = "B",
                        RowIndex = rowIndex,
                        Text = "Закупка №" + PurchaseId,
                        StyleInfo = ExcelStyleInfoType.TextWithBroder
                    });

                    InsertCellInWorksheet(new ExcelCellParameters
                    {
                        ColumnName = "C",
                        RowIndex = rowIndex,
                        Text = Amount.ToString(),
                        StyleInfo = ExcelStyleInfoType.TextWithBroder
                    });

                    rowIndex++;
                }
                rowIndex++;
            }

            return SaveExcel();
        }

        public MemoryStream CreateBankOperatorReport(ExcelInfo info)
        {
            if (info.Currencies == null)
            {
                throw new ArgumentNullException("Данные для отчета не найдены!", 
                    nameof(info.Currencies));
            }

            CreateExcel();

            InsertCellInWorksheet(new ExcelCellParameters
            {
                ColumnName = "A",
                RowIndex = 1,
                Text = info.Title,
                StyleInfo = ExcelStyleInfoType.Title
            });

            MergeCells(new ExcelMergeParameters
            {
                CellFromName = "A1",
                CellToName = "C1"
            });

            uint rowIndex = 2;
            foreach (var currency in info.Currencies)
            {
                InsertCellInWorksheet(new ExcelCellParameters
                {
                    ColumnName = "A",
                    RowIndex = rowIndex,
                    Text = "Валюта № " + currency.CurrencyId,
                    StyleInfo = ExcelStyleInfoType.Text
                });
                InsertCellInWorksheet(new ExcelCellParameters
                {
                    ColumnName = "B",
                    RowIndex = rowIndex,
                    Text = currency.CurrencyName,
                    StyleInfo = ExcelStyleInfoType.TextWithBroder
                });
                rowIndex++;

                foreach (var transfer in currency.Transfers)
                {
                    InsertCellInWorksheet(new ExcelCellParameters
                    {
                        ColumnName = "C",
                        RowIndex = rowIndex,
                        Text = "Зачисление № " + transfer.Id,
                        StyleInfo = ExcelStyleInfoType.TextWithBroder
                    });
                    InsertCellInWorksheet(new ExcelCellParameters
                    {
                        ColumnName = "D",
                        RowIndex = rowIndex,
                        Text = transfer.Amount.ToString(),
                        StyleInfo = ExcelStyleInfoType.TextWithBroder
                    });

                    rowIndex++;
                }
                rowIndex++;
            }

            return SaveExcel();
        }

        /// <summary>
        /// Создание excel-файла
        /// </summary>
        /// <param name="info"></param>
        protected abstract void CreateExcel();

        /// <summary>
        /// Добавляем новую ячейку в лист
        /// </summary>
        /// <param name="cellParameters"></param>
        protected abstract void InsertCellInWorksheet(ExcelCellParameters excelParams);

        /// <summary>
        /// Объединение ячеек
        /// </summary>
        /// <param name="mergeParameters"></param>
        protected abstract void MergeCells(ExcelMergeParameters excelParams);

        /// <summary>
        /// Сохранение файла
        /// </summary>
        /// <param name="info"></param>
        protected abstract MemoryStream SaveExcel();
    }
}