isn/src/isnd/Data/Packages/Package.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using isnd.Interfaces;
using Newtonsoft.Json;

namespace isnd.Data.Packages
{

    public class Package
    {
        [Key]
        [Required]
        [StringLength(1024)]
        public string Id { get; set; }

        [Required]
        [ForeignKey("Owner")]
        public string OwnerId { get; set; }

        [StringLength(1024)]
        public string Description { get; set; }

        public bool Public { get; set; }

        [JsonIgnore]
        virtual public ApplicationUser Owner { get; set; }

        [JsonIgnore]

        public virtual List<PackageVersion> Versions { get; set; }

        /// <summary>
        /// Latest version at put, posted, 
        /// or even deletion when no more active version.
        /// </summary>
        /// <value></value>
        [Required]
        [JsonIgnore] 
        [ForeignKey("LatestCommit")]
        public long CommitNId { get; set; }


        [NotMapped]
        public string CommitId { get => CommitNId.ToString(); }

        public virtual Commit LatestCommit { get; set; }

        internal string GetLatestVersion()
        {
            return Versions.Max(v => v.NugetVersion)?.ToFullString();
        }
    }
}