EFM - Programmation orientée objet - 2014-2015

La classe Article:

class Article
    {
        protected int code;
        protected string designation;
        protected double prix;
        protected string categorie;

        public string Designation
        {
            get { return designation; }
            set { designation = value; }
        }
        public double Prix
        {
            get { return prix; }
            set { prix = value; }
        }
        public string Categorie
        {
            get { return categorie; }
            set 
            {
                if (value.ToLower() == "informatique" || value.ToLower() == "bureautique")
                    categorie = value;
                else
                    throw new CategorieInvalideException();
            }
        }

        public Article() { }

        public Article(int c, string d, double p, string cat)
        {
            code = c;
            designation = d;
            prix = p;
            Categorie = cat;                     //Utiliser la propriété au lieu de l'attribut
        }

        public virtual double GetPrix()
        {
            return prix;
        }

        public void SetPrix(double p)
        {
            if (p > 0)
                prix = p;
            else
                throw new Exception("Prix Invalide");
        }

        public override string ToString()
        {
            return "Code: " + code + "Désignation" + designation + "Prix: " + prix + "Catégorie: " + Categorie;
        }

        public override bool Equals(object obj)
        {
            if (obj == null)
                return false;
            else if (obj == this)
                return true;
            else if (obj.GetType() != this.GetType())
                return false;
            else
            {
                Article A=(Article)obj;
                if (A.code == this.code && A.designation == this.designation && A.prix == this.prix && A.Categorie == this.Categorie)
                    return true;
                else
                    return false;
            }
        }   
    }

La classe Article en Solde:

class ArticleEnSolde:Article
    {
        private double remise;
        public double Remise
        {
            get { return remise; }
            set { remise = value; }
        }

        public ArticleEnSolde() : base() { }

        public ArticleEnSolde(int c, string d, double p, string cat, double r)
            : base(c, d, p, cat)
        {
            if (r >= 0)
                remise = r;
            else
                throw new Exception("Valeur remise invalide");
        }

        public override double GetPrix()
        {
            return Prix*(1-remise/100);
        }
    }

La classe Achat:

[Serializable] class Achat : IComparable
    {
        private int numeroachat;
        private Article article_achete;
        private int quantite;

        public int Numeroachat
        {
            get { return numeroachat; }
            set { numeroachat = value; }
        }

        public Article Article_achete
        {
            get { return article_achete; }
            set { article_achete = value; }
        }

        public int Quantite
        {
            get { return quantite; }
            set { quantite = value; }
        }

        public Achat(int num, Article art, int q)
        {
            numeroachat = num;
            article_achete = art;
            quantite = q;
        }

        public int CompareTo(Object o)
        {
            Achat a = (Achat)o;
            return article_achete.Designation.CompareTo(a.article_achete.Designation);
        }
    }

La classe Facture:

class Facture
    {
        private static int compteur = 0;
        private int code;
        private DateTime date;
        private List<Achat> A;

        public int Code
        {
            get { return code; }
        }

        public Facture()
        {
            compteur++;
            code = compteur;
            date = DateTime.Today;
            A = new List<Achat>();
        }

        public Facture(List<Achat> L)
        {
            compteur++;
            code = compteur;
            date = DateTime.Today;
            A = new List<Achat>();
            A.AddRange(L);
        }

        public void Ajouter(Achat a)
        {
            bool b = true;
            for (int i = 0; i < A.Count; i++)
            {
                if (A[i].Numeroachat == a.Numeroachat)
                {
                    b = false;
                    break;
                }
            }
            if (b == true)
            {
                A.Add(a);
                Console.Out.WriteLine("L'achat a été bien ajouté");
            }
            else
                Console.Out.WriteLine("Achat existe déjà");
        }

        public double Montant_Facture()
        {
            double s = 0;
            for (int i = 0; i < A.Count; i++)
            {
                s += A[i].Article_achete.GetPrix() * A[i].Quantite;
            }
            return s;
        }

        public void Enregistrer(string nom_fichier)
        {

            List<Achat> temp = new List<Achat>();
            temp.AddRange(A);
            temp.Sort();  //Trier les achats par désignation (Implémenter dans la classe Achat la méthode CompareTo de l'interface IComparable)


            BinaryFormatter b = new BinaryFormatter();
            Stream f = File.OpenWrite(nom_fichier);
            b.Serialize(f, temp);
            f.Close();
            Console.Out.WriteLine("Enregistrement terminé");
        }
        public override string ToString()
        {
            string s1 = "", s2 = "", s3 = "";

            s1 = "Numéro facture: " + Code + " Date Facture: " + date.ToShortDateString() + "\r\n";
            s2 = "Liste d'achats:\r\nDésignation\tRemise\tPrix(en DH)\tQuantité\tPrix total\r\n";
            if (A.Count == 0)
                s3 = "-----------------------------\n";
            else
            {
                for (int i = 0; i < A.Count; i++)
                {
                    s3 = s3 + A[i].Article_achete.Designation + "\t";
                    if (A[i].Article_achete.GetType() == typeof(Article))
                        s3 = s3 + "0\t";
                    else
                    {
                        ArticleEnSolde at = (ArticleEnSolde)A[i].Article_achete;
                        s3 += at.Remise + "\t";
                    }
                        s3 += A[i].Article_achete.Prix + "\t\t";
                        s3 += A[i].Quantite + "\t\t";
                        s3 += A[i].Quantite * A[i].Article_achete.GetPrix() + "\r\n";      
                 }
            }
            s3 = s3 + "Montant de la facture: " + Montant_Facture();
            return s1 + s2 + s3;
        }
    }