using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using LCU.API.Collections.RepoApi.Domain.Processing;
using LCU.Shared.Collections.RepoApiLib.Models;
using LCU.Shared.Collections.RepoApiLib.Models.Consumer;

namespace LCU.API.Collections.RepoApi.Domain.AlertChecker
{
    public class PaymentReceivedChecker : TransactionHistoryChecker
    {
        private readonly List<string> _watchedStatuses = new List<string> { "O4R", "REPO", "SOLD" };
        private readonly List<string> _watchedTransactionTypes = new List<string> { "COFR", "POFF", "EXT", "SPMT", "XPMT" };
        private const string EmailDestination = "RepoManagerCreditDebits@landmarkcu.com";

        public override List<EventAlert> CheckForAlert(RepoAccountProcessingSlip slip)
        {
            var newEventAlerts = new List<EventAlert>();
            var results = GetRecentTransactionsFromType(_watchedTransactionTypes, slip.TransactionHistory);
            if (results != null && _watchedStatuses.Contains(slip.UpdatedRepoAccount.Status))
            {
                var dueDate = slip.Loan?.NextDueDate.ToString(CultureInfo.CurrentCulture) ?? "Unknown";
                foreach (var result in results)
                {
                    newEventAlerts.Add(new EventAlert()
                    {
                        RepoId = slip.UpdatedRepoAccount.RepoId,
                        AccountNo = slip.UpdatedRepoAccount.AccountNo,
                        Message = "Payment Received",
                        SubMessage = FormatTransactionMessage(result),
                        CreatedBy = "Batch",
                        DateAdded = DateTime.Now,
                        EmailRecipient = EmailDestination,
                        EmailBody = CreateEmailBody(slip.UpdatedRepoAccount, result, dueDate)
                    });
                }
            }

            return newEventAlerts.Count > 0 ? newEventAlerts : null;
        }

        private string CreateEmailBody(RepoAccount repoAccount, CoreTransaction coreTransaction, string nextDueDate)
        {
            var message = "Loan Payment<br/><br/>";
            var member = repoAccount.Borrowers?.First(b => b.OwnershipType == 6);
            var memberName = "Member Name: " + member?.IndividualName + "<br/>";
            var accountNo = "Account No: " + repoAccount.AccountNo + "<br/>";
            var paymentAmount = "Payment Amount: " + coreTransaction.amount + "<br/>";
            var nextDueDateString = "Next Due Date: " + nextDueDate + "<br/>";
            var loanBalance = "Loan Balance: " + coreTransaction.runningBalance + "<br/>";

            return string.Concat(message, memberName, accountNo, paymentAmount, nextDueDateString, loanBalance);
        }
    }
}