hszf-2zh/hszf-z2-gyakorlas/Program.cs

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Internal;
using Newtonsoft.Json;
using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Reflection;
using System.Text.Json.Serialization;
using System.Xml.Linq;
using System.Xml.Serialization;

namespace hszf_z2_gyakorlas
{
    public class category
    {
        [Key]
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public string Name { get; set; }
        [Required]
        public virtual ICollection<product> Products { get; set; }

        public category(string name, List<product> products)
        {
            this.Name = name;
            this.Products = products;
        }

        public category()
        {
            Products = new HashSet<product>();
        }

    }

    public class product
    {
        public product(string sku, string name, int price)
        {
            this.Sku = sku;
            this.Name = name;
            this.Price = price;
        }

        public product()
        {

        }

        [Key]
        [RequiredNonEmpty]
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public string Sku { get; set; }
        public string Name { get; set; }
        [CorrectPrice(10, 20000)]
        public int Price { get; set; }
    }

    public class RequiredNonEmpty : Attribute {
        
    }

    public class CorrectPrice : Attribute
    {
        int minValue;
        int maxValue;

        public CorrectPrice(int minValue, int maxValue)
        {
            this.minValue = minValue;
            this.maxValue = maxValue;
        }

        public int MinValue { get => minValue; set => minValue = value; }
        public int MaxValue { get => maxValue; set => maxValue = value; }
    }


    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");
            string[] sorok = File.ReadAllLines("products.xml");

            XDocument doc = XDocument.Load("products.xml");
            List<category> categories = new List<category>();
            foreach (var item in doc.Descendants("Categories").Descendants("Category"))
            {
                string nev = item.Element("Name").Value;
                List<product> array2 = new List<product>();
                foreach (var item2 in item.Descendants("Products").Descendants("Product"))
                {
                    array2.Add(new product(item2.Element("Sku").Value, item2.Element("Name").Value, int.Parse(item2.Element("Price").Value)));
                }
                categories.Add(new category(nev, array2));

            }

            Console.WriteLine(Validate.Valid(categories));

            Console.WriteLine(Validate.ValidPrice(categories));

            string connStr = @"Data Source=(LocalDB)\MSSQLLocalDB;Initial Catalog=persondb;Integrated Security=True;MultipleActiveResultSets=true";


            CategoryDbContext ctx = new CategoryDbContext();

            foreach (var item in categories.Select(x => new category(x.Name, x.Products.Where(x => x.Price > 10000).ToList())))
            {
                ctx.Categories.Add(item);
            }
            ctx.SaveChanges();

            string asd = JsonConvert.SerializeObject(categories, Formatting.Indented);
            Console.WriteLine(asd);
            File.WriteAllLines("categories.json", [asd]);


            List<category> categories1 = JsonConvert.DeserializeObject<List<category>>(asd);
            Console.WriteLine((categories1[1].Products).ToList()[0].Name);
        }
    }

    public class Validate
    {
        public static bool Valid(List<category> categories)
        {
            foreach (var category in categories)
            {
                foreach (var item in category.Products)
                {
                    Type t = item.GetType();
                    PropertyInfo[]? propertyInfos = t.GetProperties();
                    if (propertyInfos is not null)
                    {
                        foreach (PropertyInfo propertyInfo in propertyInfos)
                        {
                            if (propertyInfo.GetCustomAttribute<RequiredNonEmpty>() is not null && (propertyInfo.GetValue(item) == null || propertyInfo.GetValue(item) == ""))
                            {
                                return false;
                            }
                        }
                    }
                }
            }
            return true;
        }

        public static bool ValidPrice(List<category> categories)
        {
            foreach (var category in categories)
            {
                foreach (var item in category.Products)
                {
                    Type t = item.GetType();
                    PropertyInfo[]? propertyInfos = t.GetProperties();
                    if (propertyInfos is not null)
                    {
                        foreach (PropertyInfo propertyInfo in propertyInfos)
                        {
                            CorrectPrice? correctPrice = propertyInfo.GetCustomAttribute<CorrectPrice>();
                            if (correctPrice is not null && ((int)propertyInfo.GetValue(item) > correctPrice.MaxValue  || (int)propertyInfo.GetValue(item) < correctPrice.MinValue))
                            {
                                return false;
                            }
                        }
                    }
                }
            }
            return true;
        }
    }

    public class CategoryDbContext : DbContext
    {
        public DbSet<category> Categories { get; set; }
        public CategoryDbContext()
        {
            Database.EnsureDeleted();
            Database.EnsureCreated();
        }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            string connStr = @"Data Source=(LocalDB)\MSSQLLocalDB;Initial Catalog=categoriesdb;Integrated Security=True;MultipleActiveResultSets=true";
            optionsBuilder.UseSqlServer(connStr);
            base.OnConfiguring(optionsBuilder);
        }
    }

}