DataSourceAdapter-Pattern + SiteExportService schlanker + Page-Services Scoped

- IDataSourceAdapter mit 3 Implementierungen (HANA, SAP_GATEWAY, MANUAL_EXCEL) und DataSourceAdapterResolver ersetzen das if/else auf ConnectionKind. - SiteExportService von 338 auf 187 Zeilen reduziert: Pipeline Resolve -> Fetch -> Transform -> Excel -> Central -> SharePoint. - Page-Services auf Scoped (per Blazor-Circuit); Orchestrator bleibt Singleton fuer geteilten Export-Status.
2026-04-17 12:11:35 +00:00
parent 2a56ba53ba
commit 82ac7df0ec
11 changed files with 431 additions and 231 deletions
@@ -0,0 +1,81 @@
+using Microsoft.EntityFrameworkCore;
+using TrafagSalesExporter.Data;
+using TrafagSalesExporter.Models;
+
+namespace TrafagSalesExporter.Services.DataSources;
+
+public sealed class SapGatewayDataSourceAdapter : IDataSourceAdapter
+{
+    private readonly IDbContextFactory<AppDbContext> _dbFactory;
+    private readonly ISapCompositionService _sapCompositionService;
+    private readonly IAppEventLogService _appEventLogService;
+
+    public SapGatewayDataSourceAdapter(
+        IDbContextFactory<AppDbContext> dbFactory,
+        ISapCompositionService sapCompositionService,
+        IAppEventLogService appEventLogService)
+    {
+        _dbFactory = dbFactory;
+        _sapCompositionService = sapCompositionService;
+        _appEventLogService = appEventLogService;
+    }
+
+    public string ConnectionKind => SourceSystemConnectionKinds.SapGateway;
+
+    public async Task<DataSourceFetchResult> FetchAsync(DataSourceFetchContext context)
+    {
+        var site = context.Site;
+        var sourceDefinition = context.SourceDefinition;
+
+        var credentials = DataSourceCredentials.Resolve(site, sourceDefinition);
+        var sapServiceUrl = DataSourceCredentials.ResolveSapServiceUrl(site, sourceDefinition);
+        if (string.IsNullOrWhiteSpace(sapServiceUrl))
+            throw new InvalidOperationException($"Standort '{site.Land}' hat keine SAP Service URL.");
+
+        using var db = await _dbFactory.CreateDbContextAsync();
+        var sapSources = await db.SapSourceDefinitions.Where(s => s.SiteId == site.Id).ToListAsync();
+        var sapJoins = await db.SapJoinDefinitions.Where(j => j.SiteId == site.Id).ToListAsync();
+        var sapMappings = await db.SapFieldMappings.Where(m => m.SiteId == site.Id).ToListAsync();
+
+        if (sapSources.Count == 0)
+            throw new InvalidOperationException($"Standort '{site.Land}' hat keine SAP-Quellen konfiguriert.");
+        if (sapMappings.Count == 0)
+            throw new InvalidOperationException($"Standort '{site.Land}' hat keine SAP-Feldmappings.");
+
+        context.UpdateStatus?.Invoke("SAP Quellen laden...");
+        await _appEventLogService.WriteAsync("Export", "SAP Quellen laden",
+            siteId: site.Id, land: site.Land,
+            details: $"Sources={sapSources.Count} | Mappings={sapMappings.Count}");
+
+        var effectiveSite = CloneSiteWithSapServiceUrl(site, sapServiceUrl);
+        var records = await _sapCompositionService.BuildSalesRecordsAsync(
+            effectiveSite, sapSources, sapJoins, sapMappings,
+            credentials.Username, credentials.Password);
+
+        return new DataSourceFetchResult { Records = records };
+    }
+
+    private static Site CloneSiteWithSapServiceUrl(Site site, string sapServiceUrl)
+    {
+        return new Site
+        {
+            Id = site.Id,
+            HanaServerId = site.HanaServerId,
+            HanaServer = site.HanaServer,
+            Schema = site.Schema,
+            TSC = site.TSC,
+            Land = site.Land,
+            SourceSystem = site.SourceSystem,
+            UsernameOverride = site.UsernameOverride,
+            PasswordOverride = site.PasswordOverride,
+            LocalExportFolderOverride = site.LocalExportFolderOverride,
+            ManualImportFilePath = site.ManualImportFilePath,
+            ManualImportLastUploadedAtUtc = site.ManualImportLastUploadedAtUtc,
+            SapServiceUrl = sapServiceUrl,
+            SapEntitySet = site.SapEntitySet,
+            SapEntitySetsCache = site.SapEntitySetsCache,
+            SapEntitySetsRefreshedAtUtc = site.SapEntitySetsRefreshedAtUtc,
+            IsActive = site.IsActive
+        };
+    }
+}