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 answers :
    /// convert model to DTO, model to Entity, ...
    /// and equality protocols
    /// </summary>
    public static class AnswerExtensionMethods
    {
        // conversion methods
        public static Answer ToModel(this AnswerEntity a)
            => new Answer(a.Content, a.Question?.ToModel(), a.Id);
        public static Answer ToModel(this AnswerDto a)
            => new Answer(a.Content, a.Question?.ToModel(), a.Id);
        public static AnswerDto ToDto(this Answer a)
            => new AnswerDto { Id = a.Id, Content = a.Content, Question = a.Question?.ToDto(), IdQuestion = a.IdQuestion };
        public static AnswerEntity ToEntity(this Answer a)
            => new AnswerEntity { Id = a.Id, Content = a.Content, Question = a.Question?.ToEntity(), IdQuestion = a.IdQuestion };

        // reuse other methods
        public static AnswerDto ToDto(this AnswerEntity a)
            => a.ToModel().ToDto();
        public static AnswerEntity ToEntity(this AnswerDto a)
            => a.ToModel().ToEntity();

        // equality protocols
        public static bool Equals(this Answer a1, Answer a2)
            => a1.Content == a2.Content && a1.IdQuestion == a2.IdQuestion;

        // reuse other methods
        public static bool Equals(this Answer a1, AnswerDto a2)
            => a1.Equals(a2.ToModel());
        public static bool Equals(this Answer a1, AnswerEntity a2)
            => a1.Equals(a2.ToModel());
        public static bool Equals(this AnswerDto a1, Answer a2)
            => a1.ToModel().Equals(a2);
        public static bool Equals(this AnswerDto a1, AnswerDto a2)
            => a1.ToModel().Equals(a2.ToModel());
        public static bool Equals(this AnswerDto a1, AnswerEntity a2)
            => a1.ToModel().Equals(a2.ToModel());
        public static bool Equals(this AnswerEntity a1, Answer a2)
            => a1.ToModel().Equals(a2);
        public static bool Equals(this AnswerEntity a1, AnswerDto a2)
            => a1.ToModel().Equals(a2.ToModel());
        public static bool Equals(this AnswerEntity a1, AnswerEntity a2)
            => a1.ToModel().Equals(a2.ToModel());
        /// <summary>
        /// equality protocol for an answer
        /// </summary>
        /// <param name="a">the answer</param>
        /// <param name="o">an object</param>
        /// <returns>true if the answer and the object are sames, false otherwise</returns>
        public static bool Equals(this Answer a, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Answer)) return Equals(a, (Answer)o);
            else if (o.GetType() == typeof(AnswerEntity)) return Equals(a, ((AnswerEntity)o));
            else if (o.GetType() == typeof(AnswerDto)) return Equals(a, (AnswerDto)o);
            return false;
        }
        /// <summary>
        /// equality protocol for an answer entity
        /// </summary>
        /// <param name="a">the answer entity</param>
        /// <param name="o">an object</param>
        /// <returns>true if the answer entity and the object are sames, false otherwise</returns>
        public static bool Equals(this AnswerEntity a, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Answer)) return Equals(a, (Answer)o);
            else if (o.GetType() == typeof(AnswerEntity)) return Equals(a, ((AnswerEntity)o));
            else if (o.GetType() == typeof(AnswerDto)) return Equals(a, (AnswerDto)o);
            return false;
        }
        /// <summary>
        /// equality protocol for an answer dto
        /// </summary>
        /// <param name="a">the answer dto</param>
        /// <param name="o">an object</param>
        /// <returns>true if the answer dto and the object are sames, false otherwise</returns>
        public static bool Equals(this AnswerDto a, object? o)
        {
            if (o == null) return false;
            if (o.GetType() == typeof(Answer)) return Equals(a, (Answer)o);
            else if (o.GetType() == typeof(AnswerEntity)) return Equals(a, ((AnswerEntity)o));
            else if (o.GetType() == typeof(AnswerDto)) return Equals(a, (AnswerDto)o);
            return false;
        }
    }
}