telegram-bot/Core/Extensions/DbContextExtension.cs

using System;
using Microsoft.EntityFrameworkCore;

namespace Kruzya.TelegramBot.Core.Extensions;

public static class DbContextExtension
{
    /// <summary>
    /// Marks the entity as created.
    /// </summary>
    /// <param name="dbContext"></param>
    /// <param name="entity">Entity for marking as created.</param>
    [Obsolete("DbContextExtension.MarkAsCreated is obsolete, use DbContext.Add instead")]
    public static void MarkAsCreated(this DbContext dbContext, object entity) =>
        dbContext.Entry(entity).State = EntityState.Added;

    /// <summary>
    /// Marks the entity as deleted.
    /// </summary>
    /// <param name="dbContext"></param>
    /// <param name="entity">Entity for marking as deleted.</param>
    [Obsolete("DbContextExtension.MarkAsDeleted is obsolete, use DbContext.Remove instead")]
    public static void MarkAsDeleted(this DbContext dbContext, object entity) =>
        dbContext.Entry(entity).State = EntityState.Deleted;

    /// <summary>
    /// Marks the entity as modified.
    /// </summary>
    /// <param name="dbContext"></param>
    /// <param name="entity">Entity for marking as modified.</param>
    [Obsolete("DbContextExtension.MarkAsModified is obsolete, use DbContext.Update instead")]
    public static void MarkAsModified(this DbContext dbContext, object entity)
    {
        var entry = dbContext.Entry(entity);
        if (entry.State == EntityState.Added)
            return;

        entry.State = EntityState.Modified;            
    }

    public static void AddOrUpdate(this DbContext dbContext, object entity)
    {
        try
        {
            dbContext.Update(entity);
            dbContext.SaveChanges();
        }
        catch (DbUpdateConcurrencyException e)
        {
            dbContext.Add(entity);
            dbContext.SaveChanges();
        }
    }
}