using BankContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UniversityBusinessLogics.OfficePackage.HelperEnums;
using UniversityBusinessLogics.OfficePackage.HelperModels.Pdf;
using UniversityContracts.ViewModels;

namespace UniversityBusinessLogics.OfficePackage
{
    public abstract class AbstractSaveToPdf
    {
        public void CreateDocForPayments(PdfInfo info)
        {
            CreatePdf(info);
            CreateParagraph(new PdfParagraph { Text = info.Title, Style = "NormalTitle", ParagraphAlignment = PdfParagraphAlignmentType.Center });
            CreateParagraph(new PdfParagraph
            {
                Text = $"с {info.DateFrom.ToShortDateString()} по {info.DateTo.ToShortDateString()}",
                Style = "Normal",
                ParagraphAlignment = PdfParagraphAlignmentType.Center
            });

            CreateTable(new List<string> { "3cm", "6cm", "3cm", "3cm", "3cm", });

            CreateRow(new PdfRowParameters
            {
                Texts = new List<string> { "Сделка", "Операция", "Дата", "Оплаченная стоимость", "Полная стоимость" },
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Center
            });
            var sumPaidPrice = 0.0;
            foreach (var pc in info.ReportObjects)
            {
                if (pc is not PaymentViewModel payment)
                {
                    throw new ArgumentException($"Передан некорректный тип в отчет: " +
                                                $"ожидается Payment; Получен объект типа: {pc.GetType()}", nameof(info));
                }

                if (payment.Operation == null || payment.ClassByPurchase == null)
                {
                    throw new ArgumentNullException($"Получена модель оплаты c нулевыми полями");
                }
                sumPaidPrice += payment.PaidPrice;
                CreateRow(new PdfRowParameters
                {
                    Texts = new List<string>
                    {
                        payment.ClassByPurchase.PurchaseId.ToString(),
                        payment.Operation.Time + " " + payment.Operation.Name,
                        payment.Date.ToShortDateString(),
                        payment.PaidPrice.ToString(),
                        payment.FullPrice.ToString(),
                    },
                    Style = "Normal",
                    ParagraphAlignment = PdfParagraphAlignmentType.Left
                });
            }
            CreateParagraph(new PdfParagraph { Text = $"Итого оплачено : {sumPaidPrice}\t", Style = "Normal", ParagraphAlignment = PdfParagraphAlignmentType.Rigth });

            SavePdf(info);
        }

        public void CreateDocForPurchases(PdfInfo info)
        {
            CreatePdf(info);
            CreateParagraph(new PdfParagraph { Text = info.Title, Style = "NormalTitle", ParagraphAlignment = PdfParagraphAlignmentType.Center });
            CreateParagraph(new PdfParagraph
            {
                Text = $"с {info.DateFrom.ToShortDateString()} по {info.DateTo.ToShortDateString()}",
                Style = "Normal",
                ParagraphAlignment = PdfParagraphAlignmentType.Center
            });

            CreateTable(new List<string> { "4cm", "5cm", "5cm", "3cm", });

            CreateRow(new PdfRowParameters
            {
                Texts = new List<string> { "Дата получения", "Сделка", "Статья затрат", "Сумма затраты" },
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Center
            });
            foreach (var pc in info.ReportObjects)
            {
                if (pc is not PurchaseViewModel purchase)
                {
                    throw new ArgumentException($"Передан некорректный тип в отчет: " +
                                                $"ожидается Purchase; Получен объект типа: {pc.GetType()}", nameof(info));
                }

                if (purchase.CostViewModels == null)
                {
                    throw new ArgumentNullException($"Получена модель статьи затрат c нулевыми полями");
                }
                foreach (var cost in purchase.CostViewModels)
                {
                    CreateRow(new PdfRowParameters
                    {
                        Texts = new List<string>
                    {
                        purchase.DatePurchase.ToShortDateString(),
                        purchase.Id.ToString(),
                        cost.NameOfCost,
                        (cost.Price* cost.PurchaseModels[purchase.Id].Count).ToString(),
                    },
                        Style = "Normal",
                        ParagraphAlignment = PdfParagraphAlignmentType.Left
                    });
                }
            }
            SavePdf(info);
        }

        /// <summary>
        /// Создание doc-файла
        /// </summary>
        /// <param name="info"></param>
        protected abstract void CreatePdf(PdfInfo info);

        /// <summary>
        /// Создание параграфа с текстом
        /// </summary>
        /// <param name="title"></param>
        /// <param name="style"></param>
        protected abstract void CreateParagraph(PdfParagraph paragraph);

        /// <summary>
        /// Создание таблицы
        /// </summary>
        /// <param name="title"></param>
        /// <param name="style"></param>
        protected abstract void CreateTable(List<string> columns);

        /// <summary>
        /// Создание и заполнение строки
        /// </summary>
        /// <param name="rowParameters"></param>
        protected abstract void CreateRow(PdfRowParameters rowParameters);

        /// <summary>
        /// Сохранение файла
        /// </summary>
        /// <param name="info"></param>
        protected abstract void SavePdf(PdfInfo info);

    }
}