Buecherwurm/Book.cs

using System.Text.Json.Serialization;

namespace Bücherwurm
{
    class Book : IProduct
    {
        [JsonPropertyName("title")]
        public string Name {get; set;}

        [JsonPropertyName("author")]
        public string Author {get; set;}

        [JsonPropertyName("country")]
        public string Country {get; set;}

        [JsonPropertyName("link")]
        public string Link {get; set;}

        [JsonPropertyName("language")]
        public string Language {get; set;}

        [JsonPropertyName("pages")]
        public int Pages {get; set;}

        [JsonPropertyName("year")]
        public int Year {get; set;}
        [JsonIgnore]
        public int ProductId { get; set; }
        [JsonIgnore]
        public CategoryEnum Category { get; set; }
        [JsonPropertyName("imageLink")]
        public string ImageLink { get; set; }
        [JsonIgnore]
        public int LendTime {get; set;}

        public Book(int Id, string Title, string Author,
            string Country, string ILink, string Link, string Language,
            int Pages, int Year)
        {
            ProductId = Id;
            Category = CategoryEnum.Book;
            LendTime = 30;
            this.Name = Title;
            this.Author = Author;
            this.Country = Country;
            ImageLink = ILink;
            this.Link = Link;
            this.Language = Language;
            this.Pages = Pages;
            this.Year = Year;
        }

        public Book()
        {
            Category = CategoryEnum.Book;
            LendTime = 30;   
        }
        
        public void OverwriteNullId(int id)
        {
            if (ProductId == 0)
            {
                ProductId = id;
            }
        }
    }
}