From e0b098d2007e5bc96848c95f184a90254a04c850 Mon Sep 17 00:00:00 2001
From: Joseph Doherty <dohejw01@gmail.com>
Date: Mon, 11 May 2026 10:34:25 -0400
Subject: [PATCH] feat(db): map TemplateFolder entity and Template.FolderId

---
 .../Configurations/TemplateConfiguration.cs   | 27 +++++++++++++++++++
 .../ScadaLinkDbContext.cs                     |  1 +
 2 files changed, 28 insertions(+)

diff --git a/src/ScadaLink.ConfigurationDatabase/Configurations/TemplateConfiguration.cs b/src/ScadaLink.ConfigurationDatabase/Configurations/TemplateConfiguration.cs
index e0751ae..4c58ac9 100644
--- a/src/ScadaLink.ConfigurationDatabase/Configurations/TemplateConfiguration.cs
+++ b/src/ScadaLink.ConfigurationDatabase/Configurations/TemplateConfiguration.cs
@@ -26,6 +26,12 @@ public class TemplateConfiguration : IEntityTypeConfiguration<Template>
             .OnDelete(DeleteBehavior.Restrict)
             .IsRequired(false);
 
+        builder.HasOne<TemplateFolder>()
+            .WithMany()
+            .HasForeignKey(t => t.FolderId)
+            .OnDelete(DeleteBehavior.Restrict)
+            .IsRequired(false);
+
         builder.HasMany(t => t.Attributes)
             .WithOne()
             .HasForeignKey(a => a.TemplateId)
@@ -147,3 +153,24 @@ public class TemplateCompositionConfiguration : IEntityTypeConfiguration<Templat
         builder.HasIndex(c => new { c.TemplateId, c.InstanceName }).IsUnique();
     }
 }
+
+public class TemplateFolderConfiguration : IEntityTypeConfiguration<TemplateFolder>
+{
+    public void Configure(EntityTypeBuilder<TemplateFolder> builder)
+    {
+        builder.HasKey(f => f.Id);
+
+        builder.Property(f => f.Name)
+            .IsRequired()
+            .HasMaxLength(200);
+
+        builder.HasOne<TemplateFolder>()
+            .WithMany()
+            .HasForeignKey(f => f.ParentFolderId)
+            .OnDelete(DeleteBehavior.Restrict)
+            .IsRequired(false);
+
+        // Unique sibling name (case-insensitive enforced at service layer; this index is for fast lookup)
+        builder.HasIndex(f => new { f.ParentFolderId, f.Name }).IsUnique();
+    }
+}
diff --git a/src/ScadaLink.ConfigurationDatabase/ScadaLinkDbContext.cs b/src/ScadaLink.ConfigurationDatabase/ScadaLinkDbContext.cs
index a16bcb1..ad0f2fc 100644
--- a/src/ScadaLink.ConfigurationDatabase/ScadaLinkDbContext.cs
+++ b/src/ScadaLink.ConfigurationDatabase/ScadaLinkDbContext.cs
@@ -25,6 +25,7 @@ public class ScadaLinkDbContext : DbContext, IDataProtectionKeyContext
     public DbSet<TemplateAlarm> TemplateAlarms => Set<TemplateAlarm>();
     public DbSet<TemplateScript> TemplateScripts => Set<TemplateScript>();
     public DbSet<TemplateComposition> TemplateCompositions => Set<TemplateComposition>();
+    public DbSet<TemplateFolder> TemplateFolders => Set<TemplateFolder>();
 
     // Instances
     public DbSet<Instance> Instances => Set<Instance>();