update API for more simple approach.

SoilMoistureAPI/Data/SoilMoistureContext.cs

@@ -1,29 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-using SoilMoistureAPI.Models;
-
-namespace SoilMoistureAPI.Data
-{
-    public class SoilMoistureContext : DbContext
-    {
-        public SoilMoistureContext(DbContextOptions<SoilMoistureContext> options) : base(options)
-        {
-        }
-
-        public DbSet<SoilMoisture> SoilMoistures { get; set; }
-        public DbSet<Device> Devices { get; set; } // New DbSet for Devices
-
-        protected override void OnModelCreating(ModelBuilder modelBuilder)
-        {
-            // Configure the primary key for Device
-            modelBuilder.Entity<Device>()
-                .HasKey(d => d.DeviceId);
-
-            // Configure one-to-many relationship
-            modelBuilder.Entity<Device>()
-                .HasMany(d => d.SoilMoistures)
-                .WithOne(s => s.Device)
-                .HasForeignKey(s => s.DeviceId)
-                .OnDelete(DeleteBehavior.Cascade);
-        }
-    }
-}

SoilMoistureAPI/Data/SoilMoistureFlatContext.cs

@@ -0,0 +1,35 @@
+using Microsoft.EntityFrameworkCore;
+using SoilMoistureAPI.Models;
+
+namespace SoilMoistureAPI.Data
+{
+    public class SoilMoistureFlatContext : DbContext
+    {
+        public DbSet<SoilMoistureFlat> SoilMoisturesFlat { get; set; }
+
+        public SoilMoistureFlatContext(DbContextOptions<SoilMoistureFlatContext> options)
+            : base(options)
+        {
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            // Optionally configure the SoilMoistureFlat entity
+            modelBuilder.Entity<SoilMoistureFlat>(entity =>
+            {
+                entity.HasKey(e => e.Id);
+                entity.Property(e => e.DeviceId)
+                      .IsRequired();
+                entity.Property(e => e.MoistureLevel)
+                      .IsRequired();
+                entity.Property(e => e.Nickname)
+                      .IsRequired();
+
+                // Optionally, set default SQL for Timestamp if using SQL Server
+                // entity.Property(e => e.Timestamp).HasDefaultValueSql("GETUTCDATE()");
+            });
+
+            base.OnModelCreating(modelBuilder);
+        }
+    }
+}