3.01-QCM_MuscuMaths/WebApi/ExtensionsClassLibrairie/ChapterExtensionMethods.cs

using DTOs;
using Entities;
using Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ExtensionsClassLibrairie
{
    /// <summary>
    /// define some methods to manipulate entity, model and dto chapters :
    /// convert model to DTO, model to Entity, ...
    /// and equality protocols
    /// </summary>
    public static class ChapterExtensionMethods
    {
        // conversion methods
        public static Chapter ToModel(this ChapterEntity c)
            => new Chapter(c.Name, c.Id);
        public static Chapter ToModel(this ChapterDto c)
            => new Chapter(c.Name, c.Id);
        public static ChapterDto ToDto(this Chapter c)
            => new ChapterDto { Id = c.Id, Name = c.Name };
        public static ChapterEntity ToEntity(this Chapter c)
            => new ChapterEntity { Id = c.Id, Name = c.Name };

        // reuse other methods
        public static ChapterDto ToDto(this ChapterEntity c)
            => c.ToModel().ToDto();
        public static ChapterEntity ToEntity(this ChapterDto c)
            => c.ToModel().ToEntity();

        // equality protocols
        public static bool Equals(this Chapter c1, Chapter c2)
            => c1.Name == c2.Name;

        // reuse other methods
        public static bool Equals(this Chapter c1, ChapterDto c2)
            => c1.Equals(c2.ToModel());
        public static bool Equals(this Chapter c1, ChapterEntity c2)
            => c1.Equals(c2.ToModel());
        public static bool Equals(this ChapterDto c1, Chapter c2)
            => c1.ToModel().Equals(c2);
        public static bool Equals(this ChapterDto c1, ChapterDto c2)
            => c1.ToModel().Equals(c2.ToModel());
        public static bool Equals(this ChapterDto c1, ChapterEntity c2)
            => c1.ToModel().Equals(c2.ToModel());
        public static bool Equals(this ChapterEntity c1, Chapter c2)
            => c1.ToModel().Equals(c2);
        public static bool Equals(this ChapterEntity c1, ChapterDto c2)
            => c1.ToModel().Equals(c2.ToModel());
        public static bool Equals(this ChapterEntity c1, ChapterEntity c2)
            => c1.ToModel().Equals(c2.ToModel());
        /// <summary>
        /// equality protocol for a chapter
        /// </summary>
        /// <param name="c">the chapter</param>
        /// <param name="o">an object</param>
        /// <returns>true if the chapter and the object are sames, false otherwise</returns>
        public static bool Equals(this Chapter c, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Chapter)) return Equals(c, (Chapter)o);
            else if (o.GetType() == typeof(ChapterEntity)) return Equals(c, ((ChapterEntity)o));
            else if (o.GetType() == typeof(ChapterDto)) return Equals(c, (ChapterDto)o);
            return false;
        }
        /// <summary>
        /// equality protocol for a chapter entity
        /// </summary>
        /// <param name="c">the chapter entity</param>
        /// <param name="o">an object</param>
        /// <returns>true if the chapter entity and the object are sames, false otherwise</returns>
        public static bool Equals(this ChapterEntity c, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Chapter)) return Equals(c, (Chapter)o);
            else if (o.GetType() == typeof(ChapterEntity)) return Equals(c, ((ChapterEntity)o));
            else if (o.GetType() == typeof(ChapterDto)) return Equals(c, (ChapterDto)o);
            return false;
        }
        /// <summary>
        /// equality protocol for a chapter dto
        /// </summary>
        /// <param name="c">the chapter dto</param>
        /// <param name="o">an object</param>
        /// <returns>true if the chapter dto and the object are sames, false otherwise</returns>
        public static bool Equals(this ChapterDto c, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Chapter)) return Equals(c, (Chapter)o);
            else if (o.GetType() == typeof(ChapterEntity)) return Equals(c, ((ChapterEntity)o));
            else if (o.GetType() == typeof(ChapterDto)) return Equals(c, (ChapterDto)o);
            return false;
        }
    }
}