Initial commit

src/RolemasterDb.App/Data/RolemasterDbInitializer.cs

@@ -0,0 +1,23 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace RolemasterDb.App.Data;
+
+public static class RolemasterDbInitializer
+{
+    public static async Task InitializeAsync(IServiceProvider services, CancellationToken cancellationToken = default)
+    {
+        await using var scope = services.CreateAsyncScope();
+        var dbFactory = scope.ServiceProvider.GetRequiredService<IDbContextFactory<RolemasterDbContext>>();
+        await using var dbContext = await dbFactory.CreateDbContextAsync(cancellationToken);
+
+        await dbContext.Database.EnsureCreatedAsync(cancellationToken);
+
+        if (await dbContext.AttackTables.AnyAsync(cancellationToken) || await dbContext.CriticalTables.AnyAsync(cancellationToken))
+        {
+            return;
+        }
+
+        RolemasterSeedData.Seed(dbContext);
+        await dbContext.SaveChangesAsync(cancellationToken);
+    }
+}