AccountingNext/Schaad.Accounting.Db/Repositories/BookingTextRepository.cs
Claudio Schaad f9084dc074 PR P: full async I/O top to bottom (item 19)
Every repository, service, Blazor page/dialog, and test now uses
async/await. Single atomic diff; the codebase does not compile in
intermediate states.

- BaseRepository: LoadListAsync/LoadAsync/SaveAsync return Task<T>;
  per-file locks use SemaphoreSlim so waiters can await; Save
  serialises to a MemoryStream sync (XmlSerializer has no async
  form), then File.WriteAllBytesAsync + sync File.Move.
- RepositoryCache.GetOrLoadAsync takes a Func<Task<List<T>>>.
- All 7 repository interfaces + implementations async.
- All service interfaces + implementations async (except vendor
  IFxService and stateless IFxConverter / SettingsService).
- Every Blazor OnInitializedAsync switches to await base.
- Test suite fully async, 42 tests pass.

AccountRepository.EnsureAccountsFile keeps two .GetAwaiter().GetResult()
bridges because it runs from the constructor.

Null-render guard follow-up (folded in):
Blazor now renders the component once with fields at their initial
values while OnInitializedAsync awaits — so fields declared `= null!`
are actually null on that first render and things like
`accounts.GroupBy(...)` throw ArgumentNullException. Fixed across
Transactions, BalanceReport, BalanceSheetReport, ProfitLossReport,
DetailReport, Assets, Spendings, SpendingsOverTime, TransactionDialog,
TransactionSplitDialog, and BookingRuleDialog:
- Collection fields initialise to [] so first-render loops are empty.
- Single-object data fields become nullable; the razor wraps
  consumption in `@if (field is null) { <p>Lädt…</p> return; }`.
- <PlotlyChart> guarded behind a null check on config/layout/data so
  Plotly.Blazor's @bind doesn't see nulls.
- Header/footer strings initialise to "" instead of null!.

Architectural hygiene on a single-user local Blazor Server app: the
observed win is one File.ReadAllBytesAsync and one
File.WriteAllBytesAsync per Load/Save, and after PR D each file is
loaded at most once per SignalR circuit.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-07-03 18:30:44 +02:00

52 lines
1.7 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using Schaad.Accounting.Interfaces;
using Schaad.Accounting.Models;
namespace Schaad.Accounting.Repositories
{
public class BookingTextRepository : BaseRepository, IBookingTextRepository
{
private readonly string BOOKING_TEXTS = "BookingTexts.xml";
public BookingTextRepository(ISettingsService settingsService, RepositoryCache cache, ILogger<BookingTextRepository> logger)
: base(settingsService, cache, logger)
{
EnsureFileExists(BOOKING_TEXTS);
}
public Task<List<BookingText>> GetBookingTextListAsync() => LoadListAsync<BookingText>(BOOKING_TEXTS);
public async Task SaveBookingTextAsync(BookingText bookingText)
{
var bookingTexts = await GetBookingTextListAsync();
var idx = bookingTexts.FindIndex(t => t.Id == bookingText.Id);
if (idx >= 0)
{
bookingTexts[idx] = bookingText;
}
else
{
bookingText.Id = Guid.NewGuid().ToString();
bookingTexts.Add(bookingText);
}
await SaveAsync(bookingTexts, BOOKING_TEXTS);
}
public async Task<BookingText> GetBookingTextAsync(string id)
{
var bookingTexts = await GetBookingTextListAsync();
return bookingTexts.FirstOrDefault(t => t.Id == id);
}
public async Task DeleteBookingTextAsync(string id)
{
var bookingTexts = await GetBookingTextListAsync();
bookingTexts.RemoveAll(t => t.Id == id);
await SaveAsync(bookingTexts, BOOKING_TEXTS);
}
}
}