Adding point works

Utils/AppDbContext.cs

@@ -0,0 +1,47 @@
+using Microsoft.EntityFrameworkCore;
+using GazpromApp.Models;
+
+namespace GazpromApp.Utils;
+
+public class AppDbContext : DbContext
+{
+    public DbSet<Models.Image> Image { get; set; }
+    public DbSet<Equipment> Equipment { get; set; }
+    public DbSet<Models.Point> Point { get; set; }
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        base.OnConfiguring(optionsBuilder);
+        optionsBuilder.UseSqlite("Data Source=MainDB.db");
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        base.OnModelCreating(modelBuilder);
+
+        // Images
+        modelBuilder.Entity<Models.Point>()
+            .HasMany(e => e.Images)
+            .WithMany(e => e.Points);
+
+        modelBuilder.Entity<Equipment>()
+            .HasOne(e => e.Image)
+            .WithMany(e => e.Equipment)
+            .HasForeignKey(e => e.ImageId);
+
+        // Properties
+        modelBuilder.Entity<Models.Point>()
+            .HasMany(e => e.Properties)
+            .WithMany(e => e.Points);
+
+        modelBuilder.Entity<Equipment>()
+            .HasMany(e => e.Properties)
+            .WithMany(e => e.Equipment);
+
+        // Equipment
+        modelBuilder.Entity<Equipment>()
+            .HasOne(e => e.Point)
+            .WithMany(e => e.Equipment)
+            .HasForeignKey(e => e.PointId);
+    }
+}