using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Biblioteque_de_Class
{
    public class Note
    {
        private string Name
        {
            get { return Name; }
            set { if (value == null) { Name = "Unnamed Note"; } else { Name = value; } }
        }

        ///private string Text { get; set; } Attribut pour le texte de la note
        private string LogoPath
        {
            get { return LogoPath; }
            set { if (value == null) { LogoPath = "PATH TO DEFAULT LOGO"; } else { LogoPath = value; } }
        }

        private DateOnly CreationDate { get; }
        private DateOnly ModificationDate { get; set; }
        private List<NoteImage> ImageList;
        private List<string> TextLineList;
        private List<User> Collaborators;
        private List<User> Editors;
        private User Owner;

        public Note(string name, string logoPath, User owner)
        {
            Name = name;
            LogoPath = logoPath;
            CreationDate = DateOnly.FromDateTime(DateTime.Now);
            ModificationDate = DateOnly.FromDateTime(DateTime.Now);
            ImageList = new List<NoteImage>();
            TextLineList = new List<string>();
            Collaborators = new List<User>();
            Editors = new List<User>();

            Owner = owner;
        }

        public string GetName() { return Name; }
        public string GetLogoPath() { return LogoPath; }
        public DateOnly GetCreationDate() { return CreationDate; }
        public DateOnly GetModificationDate() { return ModificationDate; }
        public List<NoteImage> GetImageList() { return ImageList; }
        public List<string> GetTextLineList() { return TextLineList; }
        public List<User> GetCollaborators() { return Collaborators; }
        public List<User> GetEditors() { return Editors; }
        public User GetOwner() { return Owner; }

        public override string ToString() => $"Note -> Name: {Name}\nLogoPath: {LogoPath}\nNumber of lines: {TextLineList.Count()}";

        public void SetName(string name) { Name = name; }
        public void SetLogoPath(string logoPath) { LogoPath = logoPath; }
        public void SetModificationDate() { ModificationDate = DateOnly.FromDateTime(DateTime.Now); }

        /// <summary>
        /// vérifier si l'utilisateur est le propriétaire de la note
        /// </summary>
        public bool VerifyOwner(User user) 
        { 
            return user == Owner;
        }

        public void AddImage(string imageLink, string position)
        {
            foreach (NoteImage image in ImageList)
            {
                if (image.GetImageLink() == imageLink)
                {
                    /// Do something
                }
            }
        }

        public void RemoveImage(string image)
        {
            /// Need a new data structure to store images
        }

        /// <summary>
        /// vérifier si l'utilisateur est un éditeur de la note
        /// </summary>
        public bool VerifyPrivilege(User user)
        {
            if (Editors.Contains(user))
            {
                return true;
            }
            else
            {
                throw new Exception("User is not an editor");
            }
        }

        /// <summary>
        /// ajouter un utilisateur en tant que coopérateur
        /// </summary>
        public void AddCollaborator(User owner, User user)
        {
            if (VerifyOwner(owner)) { Collaborators.Add(user); }
            else { throw new Exception("User is not the owner"); }
        }

        /// <summary>
        /// supprimer un utilisateur en tant que coopérateur
        /// </summary>
        public void RemoveCollaborator(User owner, User user)
        {
            if (VerifyOwner(owner)) { Collaborators.Remove(user); }
            else { throw new Exception("User is not the owner"); }
        }

        /// <summary>
        /// passer un coopérateur en tant qu'éditeur
        /// </summary>
        public void AddEditor(User owner, User user)
        {
            if (VerifyOwner(owner)) { Editors.Add(user); }
            else { throw new Exception("User is not the owner"); }
        }

        /// <summary>
        /// supprimer un coopérateur de la liste des éditeurs
        /// </summary>
        public void RemoveEditor(User owner, User user)
        {
            if (VerifyOwner(owner)) { Editors.Remove(user); }
            else { throw new Exception("User is not the owner"); }
        }
    }
}