Support for third party modules, improved error handling, standardardized enum naming, reorganized interface definitions, support for DB script upgrades, added Settings entity

Oqtane.Server/Repository/Context/DBContextBase.cs

@@ -0,0 +1,78 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using Oqtane.Models;
+using System;
+using System.Linq;
+
+namespace Oqtane.Repository
+{
+    public class DBContextBase : IdentityDbContext<IdentityUser>
+    {
+        private Tenant tenant;
+        private IHttpContextAccessor accessor;
+
+        public DBContextBase(ITenantResolver TenantResolver, IHttpContextAccessor accessor)
+        {
+            tenant = TenantResolver.GetTenant();
+            this.accessor = accessor;
+        }
+
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseSqlServer(tenant.DBConnectionString
+                    .Replace("|DataDirectory|", AppDomain.CurrentDomain.GetData("DataDirectory").ToString())
+            );
+            base.OnConfiguring(optionsBuilder);
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+
+            if (tenant.DBSchema != "")
+            {
+                modelBuilder.HasDefaultSchema(tenant.DBSchema);
+            }
+        }
+
+        public override int SaveChanges()
+        {
+            ChangeTracker.DetectChanges();
+
+            string username = "";
+            if (accessor.HttpContext.User.Identity.Name != null)
+            {
+                username = accessor.HttpContext.User.Identity.Name;
+            }
+            DateTime date = DateTime.Now;
+
+            var created = ChangeTracker.Entries()
+                .Where(x => x.State == EntityState.Added);
+
+            foreach(var item in created)
+            {
+                if (item.Entity is IAuditable entity)
+                {
+                    item.CurrentValues[nameof(IAuditable.CreatedBy)] = username;
+                    item.CurrentValues[nameof(IAuditable.CreatedOn)] = date;
+                }
+            }
+
+            var modified = ChangeTracker.Entries()
+                .Where(x => x.State == EntityState.Modified || x.State == EntityState.Added);
+
+            foreach (var item in modified)
+            {
+                if (item.Entity is IAuditable entity)
+                {
+                    item.CurrentValues[nameof(IAuditable.ModifiedBy)] = username;
+                    item.CurrentValues[nameof(IAuditable.ModifiedOn)] = date;
+                }
+            }
+
+            return base.SaveChanges();
+        }
+    }
+}