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Dhananjaya99
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using Fitness_core_BE.Exceptions;
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using Fitness_core_BE.Interfaces;
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using Fitness_core_BE.Interfaces.Services;
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using Fitness_core_BE.Models;
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using Fitness_core_BE.Models.Receipt;
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using QuestPDF.Fluent;
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using QuestPDF.Helpers;
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using QuestPDF.Infrastructure;
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namespace Fitness_core_BE.Services
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{
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public class ReceiptService : IReceiptService
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{
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private readonly ICustomerInvoiceRepository _customerInvoiceRepository;
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private readonly ICustomerSubscriptionRepository _customerSubscriptionRepository;
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private readonly IClientRepository _clientRepository;
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private readonly IClientInvoiceRepository _clientInvoiceRepository;
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private readonly IPaymentRepository _paymentRepository;
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private readonly IThirdPartyService _thirdPartyService;
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public ReceiptService(
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ICustomerInvoiceRepository customerInvoiceRepository,
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ICustomerSubscriptionRepository customerSubscriptionRepository,
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IClientRepository clientRepository,
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IClientInvoiceRepository clientInvoiceRepository,
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IPaymentRepository paymentRepository,
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IThirdPartyService thirdPartyService)
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{
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_customerInvoiceRepository = customerInvoiceRepository;
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_customerSubscriptionRepository = customerSubscriptionRepository;
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_clientRepository = clientRepository;
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_clientInvoiceRepository = clientInvoiceRepository;
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_paymentRepository = paymentRepository;
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_thirdPartyService = thirdPartyService;
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}
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public async Task<ReceiptModel> BuildForInvoiceAsync(Guid customerInvoiceId, decimal? paymentAmount = null, Guid? requireClientId = null)
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{
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var invoice = await _customerInvoiceRepository.GetCustomerInvoiceById(customerInvoiceId)
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?? throw new NotFoundException("Invoice not found");
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if (requireClientId.HasValue && invoice.FKClientId != requireClientId.Value)
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throw new UnauthorizedException("This invoice does not belong to your gym.");
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var subscription = await _customerSubscriptionRepository.GetCustomerSubscriptionById(invoice.FKCustomerSubscriptionId);
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string planName = subscription?.CustomerPlan?.PlanName ?? "Membership";
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Guid? customerId = subscription?.FKCustomerId;
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Customer? customer = customerId.HasValue ? await _clientRepository.GetCustomerById(customerId.Value) : null;
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var client = await _clientRepository.GetClientByIdAsync(invoice.FKClientId);
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string gymName = client?.ClientBusinesses?.FirstOrDefault()?.BusinessName
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?? client?.ClientName
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?? "GYM OS";
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decimal paid = await _paymentRepository.GetApprovedPaidAmountAsync(customerInvoiceId);
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return new ReceiptModel
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{
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ClientId = invoice.FKClientId,
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ReceiptNo = $"GYMOS-{customerInvoiceId.ToString("N")[..8].ToUpperInvariant()}",
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Date = DateTime.UtcNow,
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GymName = gymName,
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MemberName = customer?.CusName ?? "Member",
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MemberPhone = customer?.PrimaryPH,
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MemberEmail = customer?.Email,
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PlanName = planName,
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AmountPaid = paymentAmount ?? paid,
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InvoiceAmount = invoice.Amount,
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Balance = invoice.Amount - paid,
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Currency = "LKR"
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};
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}
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public async Task<ReceiptModel> BuildForClientInvoiceAsync(Guid clientInvoiceId, decimal? paymentAmount = null, Guid? requireClientId = null)
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{
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var invoice = await _clientInvoiceRepository.GetClientInvoiceById(clientInvoiceId)
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?? throw new NotFoundException("Invoice not found");
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var clientId = invoice.ClientSubscription?.FKClientId ?? Guid.Empty;
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if (requireClientId.HasValue && clientId != requireClientId.Value)
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throw new UnauthorizedException("This invoice does not belong to your gym.");
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var client = invoice.ClientSubscription?.Client ?? await _clientRepository.GetClientByIdAsync(clientId);
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string gymName = client?.ClientBusinesses?.FirstOrDefault()?.BusinessName
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?? client?.ClientName
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?? "Gym";
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var payments = await _paymentRepository.GetPaymentsByClientInvoiceIdAsync(clientInvoiceId);
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decimal paid = payments.Where(p => p.IsApproved == true).Sum(p => p.PayAmount);
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string itemSummary = invoice.Items?.FirstOrDefault()?.ItemName ?? "Platform fee";
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return new ReceiptModel
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{
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ClientId = clientId,
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ReceiptNo = $"HEXA-{clientInvoiceId.ToString("N")[..8].ToUpperInvariant()}",
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Date = DateTime.UtcNow,
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GymName = "HexaFitness",
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MemberName = gymName,
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MemberPhone = client?.ClientPhone,
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MemberEmail = client?.ClientEmail,
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PlanName = itemSummary,
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AmountPaid = paymentAmount ?? paid,
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InvoiceAmount = invoice.Amount,
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Balance = invoice.Amount - paid,
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Currency = "LKR"
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};
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}
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public byte[] GeneratePdf(ReceiptModel m)
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{
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string money(decimal v) => $"{m.Currency} {v:N2}";
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var document = QuestPDF.Fluent.Document.Create(container =>
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{
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container.Page(page =>
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{
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page.Size(PageSizes.A5);
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page.Margin(28);
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page.DefaultTextStyle(x => x.FontSize(11).FontColor(Colors.Grey.Darken3));
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page.Header().Column(col =>
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{
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col.Item().Text("GYM OS").FontSize(20).Bold().FontColor(Colors.Blue.Darken2);
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col.Item().Text(m.GymName).FontSize(13).SemiBold();
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col.Item().PaddingTop(2).Text("Payment Receipt").FontSize(10).FontColor(Colors.Grey.Medium);
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col.Item().PaddingTop(6).LineHorizontal(1).LineColor(Colors.Grey.Lighten2);
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});
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page.Content().PaddingVertical(12).Column(col =>
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{
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col.Spacing(6);
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col.Item().Row(row =>
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{
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row.RelativeItem().Text($"Receipt No: {m.ReceiptNo}");
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row.RelativeItem().AlignRight().Text($"Date: {m.Date:yyyy-MM-dd}");
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});
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col.Item().PaddingTop(4).Text("Billed to").FontColor(Colors.Grey.Medium).FontSize(9);
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col.Item().Text(m.MemberName).SemiBold();
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if (!string.IsNullOrWhiteSpace(m.MemberPhone))
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col.Item().Text(m.MemberPhone!).FontSize(10);
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if (!string.IsNullOrWhiteSpace(m.MemberEmail))
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col.Item().Text(m.MemberEmail!).FontSize(10);
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col.Item().PaddingTop(10).Table(table =>
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{
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table.ColumnsDefinition(c =>
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{
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c.RelativeColumn(3);
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c.RelativeColumn(2);
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});
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table.Cell().Element(HeaderCell).Text("Description");
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table.Cell().Element(HeaderCell).AlignRight().Text("Amount");
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table.Cell().Element(BodyCell).Text(m.PlanName);
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table.Cell().Element(BodyCell).AlignRight().Text(money(m.AmountPaid));
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static IContainer HeaderCell(IContainer c) =>
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c.Background(Colors.Grey.Lighten3).PaddingVertical(5).PaddingHorizontal(8).DefaultTextStyle(t => t.SemiBold());
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static IContainer BodyCell(IContainer c) =>
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c.BorderBottom(1).BorderColor(Colors.Grey.Lighten2).PaddingVertical(5).PaddingHorizontal(8);
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});
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col.Item().PaddingTop(10).AlignRight().Column(totals =>
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{
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totals.Item().Text($"Amount paid: {money(m.AmountPaid)}").SemiBold();
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totals.Item().Text($"Invoice total: {money(m.InvoiceAmount)}").FontSize(10).FontColor(Colors.Grey.Medium);
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totals.Item().Text($"Balance due: {money(m.Balance)}").FontSize(10)
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.FontColor(m.Balance > 0 ? Colors.Red.Medium : Colors.Green.Darken1);
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});
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});
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page.Footer().AlignCenter().Column(col =>
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{
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col.Item().PaddingTop(6).LineHorizontal(1).LineColor(Colors.Grey.Lighten2);
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col.Item().PaddingTop(6).Text("Thank you for your payment.").FontSize(10);
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col.Item().Text($"{m.GymName} · powered by GYM OS").FontSize(8).FontColor(Colors.Grey.Medium);
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});
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});
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});
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return document.GeneratePdf();
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}
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public async Task SendReceiptAsync(ReceiptModel m)
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{
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byte[] pdf;
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try
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{
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pdf = GeneratePdf(m);
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Receipt PDF generation failed (non-critical): {ex.Message}");
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return;
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}
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if (!string.IsNullOrWhiteSpace(m.MemberEmail))
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{
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try
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{
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string html =
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$"<p>Hi {m.MemberName},</p>" +
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$"<p>Thank you for your payment of <b>{m.Currency} {m.AmountPaid:N2}</b> for <b>{m.PlanName}</b> at {m.GymName}.</p>" +
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(m.Balance > 0 ? $"<p>Outstanding balance: {m.Currency} {m.Balance:N2}.</p>" : "") +
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$"<p>Your receipt ({m.ReceiptNo}) is attached.</p>" +
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$"<p>— {m.GymName}<br/><small>powered by GYM OS</small></p>";
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await _thirdPartyService.SendEmailAsync(m.MemberEmail!, $"Receipt {m.ReceiptNo} — {m.GymName}", html, pdf, $"{m.ReceiptNo}.pdf");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Receipt email failed (non-critical): {ex.Message}");
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}
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}
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if (!string.IsNullOrWhiteSpace(m.MemberPhone))
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{
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try
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{
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string sms = $"You paid {m.Currency} {m.AmountPaid:N2} for {m.PlanName} at {m.GymName}. Thank you! - GYM OS";
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await _thirdPartyService.SendSmsAsync(m.MemberPhone!, null, sms);
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Receipt SMS failed (non-critical): {ex.Message}");
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}
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}
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}
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}
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}
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