umfangreiches refactoring

TrafagSalesExporter/Services/TransformationsPageService.cs

@@ -0,0 +1,54 @@
+using Microsoft.EntityFrameworkCore;
+using TrafagSalesExporter.Data;
+using TrafagSalesExporter.Models;
+
+namespace TrafagSalesExporter.Services;
+
+public interface ITransformationsPageService
+{
+    Task<TransformationsPageState> LoadAsync();
+    Task<List<FieldTransformationRule>> SaveAllAsync(List<FieldTransformationRule> rules);
+}
+
+public sealed class TransformationsPageService : ITransformationsPageService
+{
+    private readonly IDbContextFactory<AppDbContext> _dbFactory;
+
+    public TransformationsPageService(IDbContextFactory<AppDbContext> dbFactory)
+    {
+        _dbFactory = dbFactory;
+    }
+
+    public async Task<TransformationsPageState> LoadAsync()
+    {
+        await using var db = await _dbFactory.CreateDbContextAsync();
+        var rules = await db.FieldTransformationRules.OrderBy(r => r.SortOrder).ThenBy(r => r.Id).ToListAsync();
+
+        foreach (var rule in rules)
+            rule.RuleScope = string.IsNullOrWhiteSpace(rule.RuleScope) ? "Value" : rule.RuleScope;
+
+        return new TransformationsPageState
+        {
+            SourceSystems = await db.SourceSystemDefinitions.OrderBy(x => x.Code).ToListAsync(),
+            Rules = rules
+        };
+    }
+
+    public async Task<List<FieldTransformationRule>> SaveAllAsync(List<FieldTransformationRule> rules)
+    {
+        await using var db = await _dbFactory.CreateDbContextAsync();
+        db.FieldTransformationRules.RemoveRange(db.FieldTransformationRules);
+        await db.SaveChangesAsync();
+
+        db.FieldTransformationRules.AddRange(rules);
+        await db.SaveChangesAsync();
+
+        return await db.FieldTransformationRules.OrderBy(r => r.SortOrder).ThenBy(r => r.Id).ToListAsync();
+    }
+}
+
+public sealed class TransformationsPageState
+{
+    public List<FieldTransformationRule> Rules { get; set; } = [];
+    public List<SourceSystemDefinition> SourceSystems { get; set; } = [];
+}