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package com.spice.profitmandi.dao.service;
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import com.spice.profitmandi.common.exception.ProfitMandiBusinessException;
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import com.spice.profitmandi.common.model.ProfitMandiConstants;
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import com.spice.profitmandi.common.util.FileUtil;
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import com.spice.profitmandi.common.util.Utils;
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import com.spice.profitmandi.dao.entity.auth.AuthUser;
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import com.spice.profitmandi.dao.enumuration.cs.EscalationType;
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import com.spice.profitmandi.dao.model.WarehouseItemAgeingModel;
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import com.spice.profitmandi.dao.model.purchaseSaleRatio.CatalogAgedModel;
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import com.spice.profitmandi.dao.repository.auth.AuthRepository;
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import com.spice.profitmandi.dao.repository.cs.CsService;
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import com.spice.profitmandi.dao.repository.warehouse.WarehouseSupplierInvoiceRepository;
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import com.spice.profitmandi.service.AuthService;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.core.io.ByteArrayResource;
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import org.springframework.mail.javamail.JavaMailSender;
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import org.springframework.mail.javamail.MimeMessageHelper;
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import org.springframework.stereotype.Service;
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import javax.mail.MessagingException;
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import javax.mail.internet.InternetAddress;
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import javax.mail.internet.MimeMessage;
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import java.io.UnsupportedEncodingException;
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import java.time.LocalDateTime;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Comparator;
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import java.util.List;
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import java.util.stream.Collectors;
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@Service
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public class PurSaleServiceImpl implements PurSaleService {
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    private static final Logger LOGGER = LogManager.getLogger(PurSaleServiceImpl.class);
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    @Autowired
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    WarehouseSupplierInvoiceRepository warehouseSupplierInvoiceRepository;
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    @Autowired
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    JavaMailSender googleMailSender;
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    @Autowired
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    AuthService authService;
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    @Autowired
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    AuthRepository authRepository;
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    @Autowired
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    CsService csService;
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    @Override
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    public void moreThen10DaysEgedStockReport() throws MessagingException, UnsupportedEncodingException, ProfitMandiBusinessException {
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        LocalDateTime startDate = LocalDateTime.now().minusMonths(3);
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        LocalDateTime endDate = LocalDateTime.now();
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        List<CatalogAgedModel> moreThen10DaysAgedCatalogModels = getCatalogModelsOlderThan10Days(startDate, endDate);
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        StringBuilder sb = new StringBuilder();
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        sb.append("<html><body><b>Aging Stock List: Items that are 4 days old or older (Date Range - " + startDate.toLocalDate() + " To " + endDate.toLocalDate() + " )</b>" + "<br/><table style='border:1px solid black ;padding: 5px ;bgColor=green'>");
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        sb.append("<tbody>" +
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                "<tr>" +
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                "<th style='border:1px solid black;padding: 5px'>No.</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Item Id.</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Brand</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Vendor</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Category</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Model</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Model Name</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Colour</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Purchase</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Sold</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Unsold</th>" +
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                "<th style='border:1px solid black;padding: 5px'>Age</th>" +
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                "</tr>");
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        moreThen10DaysAgedCatalogModels.sort(Comparator.comparingInt(CatalogAgedModel::getAge).reversed());
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        // Log first few records to verify itemId is populated
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        LOGGER.info("moreThen10DaysEgedStockReport - Total records: {}", moreThen10DaysAgedCatalogModels.size());
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        moreThen10DaysAgedCatalogModels.stream().limit(5).forEach(model ->
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                LOGGER.info("ItemId: {}, Brand: {}, Model: {}", model.getItemId(), model.getBrand(), model.getModel())
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        );
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        int i = 1;
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        for (CatalogAgedModel catalogAgedModel : moreThen10DaysAgedCatalogModels) {
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            sb.append("<tr>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + (i++) + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getItemId() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getBrand() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getSupplier() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getStatus() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getModelName() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getModel() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getColor().replaceFirst("f_", "") + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getPurchase() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getSold() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getUnsold() + "</td>");
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            sb.append("<td style='border:1px solid black;padding: 5px'>" + catalogAgedModel.getAge() + "</td>");
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            sb.append("</tr>");
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        }
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        sb.append("</tbody>");
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        sb.append("</table>");
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        List<WarehouseItemAgeingModel> warehouseAgeQtyModels = getAgeingModelsGtDays(startDate, endDate, 4);
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        org.apache.commons.io.output.ByteArrayOutputStream byteArrayOutputStream = null;
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        try {
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            byteArrayOutputStream = FileUtil.getCSVByteStream(Arrays.asList("Vendor", "Category", "Brand", "Model", "Color",
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                            "Age", "Warehouse", "Grn On", "In Stock"),
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                    warehouseAgeQtyModels.stream().map(x -> x.toRow()).collect(Collectors.toList()));
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        } catch (Exception e) {
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            throw new RuntimeException(e);
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        }
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        sb.append("</body></html>");
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        Utils.Attachment attachment1 = new Utils.Attachment("warehousewise-aged.csv", new ByteArrayResource(byteArrayOutputStream.toByteArray()));
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        System.out.println("Sending mail ....");
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        //Utils.sendMailWithAttachments(mailSender, new String[]{"amit.gupta@smartdukaan.com"}, new String[]{"cnc.center@shop2020.in"}, mailSubject, "Dear Partner, \nPlease find attached Credit Note(s)", attachments.toArray(new Utils.Attachment[0]));
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        //System.out.println("Mail sent ....");
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        //break;
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        //Utils.sendMailWithAttachments(mailSender, new String[]{customRetailer.getEmail()}, new String[]{"cnc.center@shop2020.in"}, mailSubject, "Dear Partner, \nPlease find attached Credit Note(s)", attachments.toArray(new Utils.Attachment[0]));
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        String subject = "Aging Stock Report: 4 Days or Older";
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        String messageText = sb.toString();
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        MimeMessage message = googleMailSender.createMimeMessage();
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        MimeMessageHelper helper = new MimeMessageHelper(message, true);
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        List<AuthUser> accountsAuthUserList = csService.getAuthUserIds(ProfitMandiConstants.TICKET_CATEGORY_ACCOUNTS, Arrays.asList(EscalationType.L1, EscalationType.L2));
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        List<String> accountTeamMails = accountsAuthUserList.stream().map(x -> x.getEmailId()).collect(Collectors.toList());
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        accountTeamMails.add("neeraj.gupta@smartdukaan.com");
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        List<AuthUser> salesAuthUserList = csService.getAuthUserIds(ProfitMandiConstants.TICKET_CATEGORY_SALES, Arrays.asList(EscalationType.L1, EscalationType.L2));
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        List<String> salesTeamMails = salesAuthUserList.stream().map(x -> x.getEmailId()).collect(Collectors.toList());
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        List<AuthUser> abmAuthUserList = csService.getAuthUserIds(ProfitMandiConstants.TICKET_CATEGORY_ABM, Arrays.asList(EscalationType.L1, EscalationType.L2));
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        List<String> abmTeamMails = abmAuthUserList.stream().map(x -> x.getEmailId()).collect(Collectors.toList());
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        List<AuthUser> categoryAuthUserList = csService.getAuthUserIds(ProfitMandiConstants.TICKET_CATEGORY_ABM, Arrays.asList(EscalationType.L1, EscalationType.L2, EscalationType.L3));
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        List<String> categoryTeamMails = categoryAuthUserList.stream().map(x -> x.getEmailId()).collect(Collectors.toList());
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        List<String> allEmails = new ArrayList<>(Arrays.asList(
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                "sm@smartdukaan.com",
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                "raj.singh@smartdukaan.com",
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                "ranu.rajput@smartdukaan.com",
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                "tarun.verma@smartdukaan.com"
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        ));
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//         niranjan kala(authId -54) Team Emails,
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        List<Integer> allReportees = authService.getAllReportees(54);
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        List<AuthUser> authUsers = authRepository.selectByIds(allReportees);
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        List<String> categotyTeamEmails = authUsers.stream().map(x -> x.getEmailId()).collect(Collectors.toList());
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        allEmails.addAll(categotyTeamEmails);
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        String[] emailTo = allEmails.toArray(new String[allEmails.size()]);
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        helper.setSubject(subject);
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        helper.setText(messageText, true);
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        helper.setTo(emailTo);
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        List<String> bccEmails = new ArrayList<>();
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        bccEmails.addAll(salesTeamMails);
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        bccEmails.addAll(accountTeamMails);
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        bccEmails.addAll(categoryTeamMails);
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        bccEmails.addAll(abmTeamMails);
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        String[] emailBcc = bccEmails.toArray(new String[0]);
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        helper.setBcc(emailBcc);
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        InternetAddress senderAddress = new InternetAddress("noreply@smartdukaan.com", "Smart Dukaan");
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        helper.setFrom(senderAddress);
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        try {
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            Utils.sendMailWithAttachments(googleMailSender, emailTo, null, emailBcc, subject, messageText, true, attachment1);
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            //Utils.sendMailWithAttachments(googleMailSender, new String[]{"amit.gupta@smartdukaan.com"}, null, null, subject, messageText, true, attachment1);
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        } catch (Exception e) {
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            throw new RuntimeException(e);
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        }
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    }
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    @Override
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    public List<CatalogAgedModel> getCatalogModelsOlderThan10Days(LocalDateTime startDate, LocalDateTime endDate) {
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        // Using selectCatalogAgeWithItemId to get itemId for email report
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        List<CatalogAgedModel> fiterCatalogAgedModels =
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                warehouseSupplierInvoiceRepository.selectCatalogAgeWithItemId(startDate, endDate, null, 0, null)
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                        .stream().filter(x -> x.getAge() >= 4 && x.getUnsold() > 0).collect(Collectors.toList());
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        LOGGER.info("fiterCatalogAgedModels - " + fiterCatalogAgedModels);
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        return fiterCatalogAgedModels;
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    }
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    private List<WarehouseItemAgeingModel> getAgeingModelsGtDays(LocalDateTime startDate, LocalDateTime endDate, int days) {
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        List<WarehouseItemAgeingModel> fiterCatalogAgedModels =
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                warehouseSupplierInvoiceRepository.selectWarehouseItemAgeing(startDate, endDate, null, 0, null)
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                        .stream().filter(x -> x.getAge() >= days).sorted(Comparator.comparing(WarehouseItemAgeingModel::getAge).reversed()).collect(Collectors.toList());
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        return fiterCatalogAgedModels;
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    }
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}