Adding

LCU.API.Collections.RepoApi-old/LCU.API.Collections.RepoApi/Services/RepoLetterService.cs

@@ -0,0 +1,92 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using LCU.API.Collections.CollectionsApiLib.Models;
+using LCU.API.Collections.RepoApi.DataAccess;
+using LCU.API.Collections.RepoApi.Exceptions;
+using LCU.Shared.Collections.RepoApiLib.Models;
+using LCU.Shared.Collections.RepoApiLib.Repositories;
+using Serilog;
+
+namespace LCU.API.Collections.RepoApi.Services
+{
+    public class RepoLetterService : IRepoLetterService
+    {
+        private readonly ILetterRepository _letterRepository;
+        private readonly ICollectionsDao _collectionsDao;
+
+        public RepoLetterService(ILetterRepository letterRepository,
+            ICollectionsDao collectionsDao)
+        {
+            _letterRepository = letterRepository;
+            _collectionsDao = collectionsDao;
+        }
+
+        public async Task<IReadOnlyCollection<RepoLetter>> ListByAccountIdAsync(int accountId)
+        {
+            try
+            {
+                var collectionsHistory = await _collectionsDao.RetrieveHistoryAsync(accountId);
+                var collectionsLetters =
+                    collectionsHistory.Where(history => history.Type == HistoryType.Letter).ToList();
+
+                if (!collectionsLetters.Any())
+                {
+                    return new List<RepoLetter>();
+                }
+
+                var letters = await _letterRepository.ListAsync();
+                return ProcessLetters(collectionsLetters, letters.ToList());
+            }
+            catch (MissingRequirementException ex)
+            {
+                throw;
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, "Failure retrieving Letter List");
+                throw new ServerErrorException();
+            }
+        }
+
+        public static IReadOnlyCollection<RepoLetter> ProcessLetters(List<TemenosHistory> collectionsLetters,
+            List<Letter> letters)
+        {
+            // GJF: Are you here to fix a bug? Probably. These don't match up, who wrote this?!?! This code is fueled by hope.
+            // Ok, so you really need to fix it. Go out to Temenos, go to System Management (the button is labelled 'tools'!)
+            // Find the Communication section, expand it and choose 'letters & forms'. Now find the right Letter and
+            // update the LetterDescription column in the Letters table of RepoDb for the correct letter.
+            var resultList = new List<RepoLetter>();
+            foreach (var letter in letters)
+            {
+                foreach (var collectionsLetter in collectionsLetters)
+                {
+                    if (string.IsNullOrWhiteSpace(letter.LetterDescription))
+                    {
+                        // If this exception is happening, see LetterUpdate.sql. Also See Above.
+                        throw new MissingRequirementException("LetterDescription", "Letter table requires LetterDescription Column entry.");
+                    }
+                    
+                    if (collectionsLetter.Message.Trim().ToUpper()
+                        .Contains(letter.LetterDescription.Trim().ToUpper()))
+                    {
+                        resultList.Add(new RepoLetter
+                        {
+                            NoticeType = collectionsLetter.Message,
+                            DateSent = collectionsLetter.Created,
+                            DateExpired = collectionsLetter.Created.AddDays(letter.DaysToWait ?? 0),
+                            DaysToRedeem = letter.DaysToWait ?? 0,
+                            ActionCode = letter.ActionCode.Trim()
+                        });
+                    }
+                }
+            }
+
+            return resultList
+                .GroupBy(x => x.NoticeType.Trim(),
+                    (key, g) => g.OrderByDescending(x => x.DateSent).FirstOrDefault())
+                .OrderByDescending(x => x.DateSent).ToList();
+        }
+    }
+}