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>
New IFxConverter.ConvertToChf(amount, fromCurrency) and FxConverter
wrap the vendor IFxService and the FixerIo API key so callers stop
threading the key through every conversion. ViewService drops
IFxService and ISettingsService from its constructor and takes
IFxConverter instead; GetAccountViewList and GetBalanceSheetView no
longer read settingsService.GetSettings() per method.
FxConverterTestShould locks in the target-currency + API-key routing.
40 tests total, all passing.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
IViewService, IFileService, and IChartService move from
Schaad.Accounting.Common/Interfaces/ to
Schaad.Accounting.Services/Interfaces/. Namespaces are unchanged, so
no consumer needs a using update. Common's vendor <Reference
Include="Schaad.Finance.Api"> can be dropped, matching Common's
documented role as the shared models/DTOs/interfaces layer.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
