using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using CommunityProject.Utilities;

namespace CommunityProject.Data.Models
{
    public enum CanCreateTopic
    {
        Admin,
        Moderator,
        All
    }

    public partial class Forum : Entity
    {
        public Forum()
        {
            CanCreateTopicId = CanCreateTopic.All;
            IsDeleted = false;
            CDate = DateTime.UtcNow;
            IsNewsForum = false;
        }

        [Index("IX_Forum_ID")]
        public int Id { get; set; }

        //Foreign Keys

        [Index("IX_Forum_CategoryID")]
        public int CategoryId { get; set; }

        public int CUserId { get; set; }

        public int? EUserId { get; set; }

        //Content

        /// <summary>
        /// The icon to display on the forum
        /// </summary>
        public string Icon { get; set; }

        public string Name { get; set; }

        public string Description { get; set; }

        public bool IsLocked { get; set; }

        public CanCreateTopic CanCreateTopicId { get; set; }

        public int SortOrder { get; set; }

        public bool IsDeleted { get; set; }

        /// <summary>
        /// If this is checked, the topics created here will be visible on the Home Page.
        /// </summary>
        public bool IsNewsForum { get; set; }

        public DateTime CDate { get; set; }

        public DateTime? EDate { get; set; }

        //Virtuals

        public virtual User CreatedUser { get; set; }

        public virtual User EditedUser { get; set; }

        public virtual Category Category { get; set; }

        public virtual IList<Topic> Topics { get; set; }

        public bool UserCanCreateTopics(string forumUserType)
        {
            switch (CanCreateTopicId)
            {
                case CanCreateTopic.All:
                    return true;
                case CanCreateTopic.Moderator:
                    switch (forumUserType)
                    {
                        case AppConstants.AdministratorTypeName:
                        case AppConstants.ModeratorTypeName:
                        case AppConstants.OwnerTypeName:
                        case AppConstants.SystemTypeName:
                            return true;
                        default:
                            return false;
                    }
                case CanCreateTopic.Admin:
                    switch (forumUserType)
                    {
                        case AppConstants.AdministratorTypeName:
                        case AppConstants.OwnerTypeName:
                        case AppConstants.SystemTypeName:
                            return true;
                        default:
                            return false;
                    }
                default:
                    return false;

            }
        }
    }
}