ef was added to the project

Newsbot.Collector.Database/DatabaseContext.cs

@@ -0,0 +1,39 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Newsbot.Collector.Domain.Consts;
+using Newsbot.Collector.Domain.Entities;
+
+namespace Newsbot.Collector.Database;
+
+public class DatabaseContext : DbContext
+{
+    public DbSet<ArticlesEntity> Articles { get; set; } = null!;
+    public DbSet<DiscordQueueEntity> DiscordQueue { get; set; } = null!;
+    public DbSet<DiscordWebhookEntity> DiscordWebhooks { get; set; } = null!;
+    public DbSet<IconEntity> Icons { get; set; } = null!;
+    public DbSet<SourceEntity> Sources { get; set; } = null!;
+    public DbSet<SubscriptionEntity> Subscriptions { get; set; } = null!;
+    
+    private string ConnectionString { get; set; }
+
+    public DatabaseContext(IConfiguration appsettings)
+    {
+        var connString = appsettings.GetConnectionString(ConfigConnectionStringConst.Database);
+        ConnectionString = connString ?? "";
+    }
+
+    public DatabaseContext(string connectionString)
+    {
+        ConnectionString = connectionString;
+    }
+
+    protected override void OnConfiguring(DbContextOptionsBuilder options)
+    {
+        options.UseNpgsql(ConnectionString);
+    }
+    
+    public DatabaseContext(DbContextOptions<DatabaseContext> options)
+        : base(options)
+    {
+    }
+}

Newsbot.Collector.Database/DesignTimeContext.cs

@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace Newsbot.Collector.Database;
+
+public class DesignTimeContext :IDesignTimeDbContextFactory<DatabaseContext>
+{
+    public DatabaseContext CreateDbContext(string[] args)
+    {
+        var optionsBuilder = new DbContextOptionsBuilder<DatabaseContext>();
+        // pass your design time connection string here
+        optionsBuilder.UseNpgsql("<connection_string>");
+        return new DatabaseContext(optionsBuilder.Options);
+    }
+}

Newsbot.Collector.Database/Newsbot.Collector.Database.csproj

@@ -6,8 +6,14 @@
 
   <ItemGroup>
     <PackageReference Include="dapper" Version="2.0.123" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.7" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.7">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="7.0.0" />
-    <PackageReference Include="Npgsql" Version="7.0.2" />
+    <PackageReference Include="Npgsql" Version="7.0.4" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.4" />
   </ItemGroup>
 
   <PropertyGroup>