using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Reflection;
using EnVisage.Code;
//using Excel;

namespace EnVisage.Models
{
	public class ProjectModel : IBaseModel<Project>, IValidatableObject
	{
		public Guid Id { get; set; }
		[Required]
		[MaxLength(100, ErrorMessage = "Name should not exceed 100 characters")]
		[Display(Name = "Name")]
		public string Name { get; set; }
		[Display(Name = "Project Number")]
		public string Number { get; set; }
        //[Required]
        [Display(Name = "Status")]
		public Guid StatusId { get; set; }
		[Display(Name = "Status")]
		public string StatusName { get; set; }
        //[Required]
		[Display(Name = "Type")]
		public Guid TypeId { get; set; }
		[Display(Name = "Type")]
      	public string TypeName { get; set; }
        //[Required]
		[Display(Name = "Client")]
        public Guid? ClientId { get; set; }
		[Display(Name = "Client")]
		public string ClientName { get; set; }
        [Required]
		[Display(Name = "Company")]
		public Guid? CompanyId { get; set; }
		[Display(Name = "Company")]
		public string CompanyName { get; set; }
		[MaxLength(8)]
		public string Color { get; set; }
		[Display(Name = "Details")]
		[MaxLength(2000)]
		public string Details { get; set; }
		[Display(Name = "Number of Scenarios")]
		public int ScenariosCount { get; set; }
        [Display(Name = "Priority")]
        [Range(0, 25)]
        public int Priority { get; set; }
        [Display(Name = "Probability")]
        [Range(0, 100)]
        [UIHint("Slider")]
        public short Probability { get; set; }
        [Display(Name = "Revenue Generating")]
        public bool IsRevenueGenerating { get; set; }
		[Display(Name = "Deadline")]
		[DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:MM/dd/yy}", ApplyFormatInEditMode = true)]
		public DateTime? Deadline { get; set; }
		[Display(Name = "Teams")]
		public List<Guid> AssignedTeams { get; set; }
		[Display(Name = "Internal Contacts")]
		public List<Guid> InternalContacts { get; set; }
		[Display(Name = "External Contacts")]
		public List<Guid> ExternalContacts { get; set; }

        public int PartsCount { get; set; }
        public bool IsProbability100 { get; set; }
        public Guid? ParentProjectId { get; set; }
        public bool DeletedPart { get; set; }
        [Display(Name = "Project has multiple parts")]
        public bool HasChildren { get; set; }
        public Guid? TemplateId { get; set; }
        public bool SaveAsCopy { get; set; }
		public bool ContinueToScenarios { get; set; }
        public virtual List<ScenarioTabModel> Scenarios { get; set; }
        public virtual List<Scenario> InactiveScenarios { get; set; }
        public List<NoteModel> Notes
        {
            get
            {
				var result = new List<NoteModel>();
                using (var dbContext = new EnVisageEntities())
                {
                    var notes = (from c in dbContext.Notes where c.ParentId == Id select c).ToList();
                    result.AddRange(notes.Select(note => (NoteModel) note));
                }
                return result;
            }
        }
        public IList<ProjectPartModel> Parts { get; set; }

	    /// <summary>
		/// Casts a <see cref="Project"/> obect to the object of type <see cref="ProjectModel"/>.
		/// </summary>
		/// <param name="obj">A <see cref="Project"/> object.</param>
		/// <returns>A <see cref="ProjectModel"/> object filled with data from db.</returns>
		public static explicit operator ProjectModel(Project obj)
		{
			if (obj == null)
				return null;
			var model = new ProjectModel
			{
				Id = obj.Id,
				Name = obj.Name,
				Number = obj.ProjectNumber,
				StatusId = obj.StatusId,
				StatusName = obj.Status != null ? obj.Status.Name : string.Empty,
				TypeId = obj.TypeId,
				TypeName = obj.Type != null ? obj.Type.Name : string.Empty,
				ClientId = obj.ClientId,
				ClientName = obj.Client != null ? obj.Client.Name : string.Empty,
				CompanyId = obj.CompanyId,
				CompanyName = obj.Company != null ? obj.Company.Name : string.Empty,
				Color = obj.Color,
				Details = obj.Details,
				ScenariosCount = 0,
                Priority = obj.Priority,
                IsRevenueGenerating = obj.IsRevenueGenerating,
				Deadline = obj.Deadline,
                Probability = Convert.ToInt16(obj.Probability * 100),
                IsProbability100 = obj.Status != null && obj.Status.Probability100,
                Scenarios = new List<ScenarioTabModel>(),
                InactiveScenarios = new List<Scenario>(),
                Parts = new List<ProjectPartModel>(),
                HasChildren = obj.HasChildren,
                ParentProjectId = obj.ParentProjectId
			};
            if (model.HasChildren)
            {
                foreach (var childProject in obj.ChildProjects)
                {
                    var part = (ProjectPartModel) childProject;
                    model.Parts.Add(part);
                    foreach (var scenario in childProject.Scenarios)
                    {
                        if (scenario.Type != ScenarioType.Actuals.GetHashCode())
                            model.ScenariosCount++;
                        model.Scenarios.Add((ScenarioTabModel)scenario);
                    }

                    part.AssignedTeams = childProject.Team2Project.Select(t => t.TeamId).ToList();
                    var partContacts = childProject.Contact2Project.Select(c => c.Contact);
                    part.InternalContacts = partContacts.Where(c => c.Type == ContactType.CompanyContact.GetHashCode()).Select(c => c.Id).ToList();
                    part.ExternalContacts = partContacts.Where(c => c.Type == ContactType.ClientContact.GetHashCode()).Select(c => c.Id).ToList();
                    part.CompanyId = model.CompanyId;
                    part.TrimStringProperties();
                }
            }
            else if (!obj.ParentProjectId.HasValue)
            {
                // if this is a main project then add one part to display it as main project properties
                model.Parts.Add(new ProjectPartModel
                    {
                        StatusId = obj.StatusId,
                        StatusName = obj.Status != null ? obj.Status.Name : string.Empty,
                        TypeId = obj.TypeId,
                        TypeName = obj.Type != null ? obj.Type.Name : string.Empty,
                        ClientId = obj.ClientId,
                        ClientName = obj.Client != null ? obj.Client.Name : string.Empty,
                        Details = obj.Details,
                        Priority = obj.Priority,
                        IsRevenueGenerating = obj.IsRevenueGenerating,
                        Deadline = obj.Deadline,
                        Probability = Convert.ToInt16(obj.Probability * 100),
                        IsProbability100 = obj.Status != null && obj.Status.Probability100,
                        ParentProjectId = obj.Id,
                        AssignedTeams = obj.Team2Project.Select(t2p => t2p.TeamId).ToList(),
                        CompanyId = obj.CompanyId
                    });
				foreach (var scenario in obj.Scenarios)
				{
					if (scenario.Type != ScenarioType.Actuals.GetHashCode())
						model.ScenariosCount++;
					model.Scenarios.Add((ScenarioTabModel)scenario);
				}
                model.Parts[0].AssignedTeams = obj.Team2Project.Select(t2p => t2p.TeamId).ToList();
                var contacts = obj.Contact2Project.Select(c2p => c2p.Contact);
                model.Parts[0].InternalContacts = contacts.Where(c => c.Type == ContactType.CompanyContact.GetHashCode()).Select(c => c.Id).ToList();
                model.Parts[0].ExternalContacts = contacts.Where(c => c.Type == ContactType.ClientContact.GetHashCode()).Select(c => c.Id).ToList();
            }
            model.PartsCount = model.Parts.Count;
            model.TrimStringProperties();
			return model;
		}

	    /// <summary>
		/// Copies data from model to DAL object.
		/// </summary>
		/// <param name="dbObj">A target DAL object.</param>
		public void CopyTo(Project dbObj)
		{
			if (dbObj == null)
				throw new ArgumentNullException();

			dbObj.Name = Name;
			dbObj.ProjectNumber = Number;
			dbObj.StatusId = StatusId;
			dbObj.TypeId = TypeId;
			dbObj.ClientId = ClientId;
			dbObj.CompanyId = CompanyId;
			dbObj.Details = Details;
			dbObj.Color = Color != null ? Color.Replace("#", "") : Color;
		    dbObj.Priority = Priority;
		    dbObj.Probability = Probability / 100.0M;
		    dbObj.IsRevenueGenerating = IsRevenueGenerating;
			dbObj.Deadline = Deadline;
		    dbObj.HasChildren = HasChildren;
		}

        public ProjectModel Clone()
        {
            return new ProjectModel
                {
                    Id = this.Id,
                    TemplateId = this.TemplateId,
                    ClientId = this.ClientId,
                    ClientName = this.ClientName,
                    Color = this.Color,
                    CompanyId = this.CompanyId,
                    CompanyName = this.CompanyName,
                    Details = this.Details,
                    InactiveScenarios = this.InactiveScenarios,
                    IsRevenueGenerating = this.IsRevenueGenerating,
					Deadline = this.Deadline,
                    Name = this.Name,
                    Number = this.Number,
                    Priority = this.Priority,
                    Probability = this.Probability,
                    SaveAsCopy = this.SaveAsCopy,
					ContinueToScenarios = this.ContinueToScenarios,
                    Scenarios = this.Scenarios,
                    ScenariosCount = this.ScenariosCount,
                    StatusId = this.StatusId,
                    StatusName = this.StatusName,
                    TypeId = this.TypeId,
                    TypeName = this.TypeName,
					AssignedTeams = this.AssignedTeams,
					InternalContacts = this.InternalContacts,
					ExternalContacts = this.ExternalContacts,
                    DeletedPart = this.DeletedPart,
                    HasChildren = this.HasChildren,
                    IsProbability100 = this.IsProbability100,
                    PartsCount = this.PartsCount,
                    Parts = this.Parts
                };
        }

        public ProjectModel()
        {
            Parts = new List<ProjectPartModel>();
        }

	    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
	    {
            if (HasChildren && Parts != null && Parts.Count > 0)
            {
                for (var i = 0; i < Parts.Count;i++)
                {
                    if (string.IsNullOrEmpty(Parts[i].Name))
                        yield return new ValidationResult(string.Format(Constants.ERROR_TEMPLATE_REQUIRED, "Part " + (i+1) + " Name"), null);
                }
            }
	    }
	}

    public class ProjectPartModel : IBaseModel<Project>
    {
        public Guid Id { get; set; }
        //[Required]
        [MaxLength(100, ErrorMessage = "Name should not exceed 100 characters")]
        [Display(Name = "Name")]
        public string Name { get; set; }
        [Required]
        [Display(Name = "Status")]
        public Guid StatusId { get; set; }
        [Display(Name = "Status")]
        public string StatusName { get; set; }
        [Required]
        [Display(Name = "Type")]
        public Guid TypeId { get; set; }
        [Display(Name = "Type")]
        public string TypeName { get; set; }
        [Required]
        [Display(Name = "Client")]
        public Guid? ClientId { get; set; }
        [Display(Name = "Client")]
        public string ClientName { get; set; }
        [Display(Name = "Details")]
        [MaxLength(2000)]
        public string Details { get; set; }
        [Display(Name = "Priority")]
        [Range(1, 25)]
        public int Priority { get; set; }
        [Display(Name = "Probability")]
        [Range(0, 100)]
        [UIHint("Slider")]
        public short Probability { get; set; }
        [Display(Name = "Revenue Generating")]
        public bool IsRevenueGenerating { get; set; }
        [Display(Name = "Deadline")]
        [DataType(DataType.Date), DisplayFormat(DataFormatString = "{0:MM/dd/yy}", ApplyFormatInEditMode = true)]
        public DateTime? Deadline { get; set; }
        [Display(Name = "Teams")]
        public List<Guid> AssignedTeams { get; set; }
        [Display(Name = "Internal Contacts")]
        public List<Guid> InternalContacts { get; set; }
        [Display(Name = "External Contacts")]
        public List<Guid> ExternalContacts { get; set; }
        public bool IsProbability100 { get; set; }
        public Guid? ParentProjectId { get; set; }
        public bool DeletedPart { get; set; }
        public bool SaveAsCopy { get; set; }
        public Guid? CompanyId { get; set; }
        public Guid? OldId { get; set; }

        /// <summary>
        /// Casts a <see cref="Project"/> obect to the object of type <see cref="ProjectPartModel"/>.
        /// </summary>
        /// <param name="obj">A <see cref="Project"/> object.</param>
        /// <returns>A <see cref="ProjectModel"/> object filled with data from db.</returns>
        public static explicit operator ProjectPartModel(Project obj)
        {
            if (obj == null)
                return null;
            var model = new ProjectPartModel
            {
                Id = obj.Id,
                Name = obj.Name,
                StatusId = obj.StatusId,
                StatusName = obj.Status != null ? obj.Status.Name : string.Empty,
                TypeId = obj.TypeId,
                TypeName = obj.Type != null ? obj.Type.Name : string.Empty,
                ClientId = obj.ClientId,
                ClientName = obj.Client != null ? obj.Client.Name : string.Empty,
                Details = obj.Details,
                Priority = obj.Priority,
                IsRevenueGenerating = obj.IsRevenueGenerating,
                Deadline = obj.Deadline,
                Probability = Convert.ToInt16(obj.Probability * 100),
                IsProbability100 = obj.Status != null && obj.Status.Probability100,
                ParentProjectId = obj.ParentProjectId
            };
            model.AssignedTeams = obj.Team2Project.Select(t2p => t2p.TeamId).ToList();
            var contacts = obj.Contact2Project.Select(c2p => c2p.Contact);
            model.InternalContacts = contacts.Where(c => c.Type == ContactType.CompanyContact.GetHashCode()).Select(c => c.Id).ToList();
            model.ExternalContacts = contacts.Where(c => c.Type == ContactType.ClientContact.GetHashCode()).Select(c => c.Id).ToList();
            model.TrimStringProperties();
            return model;
        }

        /// <summary>
        /// Copies data from model to DAL object.
        /// </summary>
        /// <param name="dbObj">A target DAL object.</param>
        public void CopyTo(Project dbObj)
        {
            if (dbObj == null)
                throw new ArgumentNullException();

            dbObj.Name = Name;
            //dbObj.ProjectNumber = Number;
            dbObj.StatusId = StatusId;
            dbObj.TypeId = TypeId;
            dbObj.ClientId = ClientId;
            //dbObj.CompanyId = CompanyId;
            dbObj.Details = Details;
            //dbObj.Color = Color != null ? Color.Replace("#", "") : Color;
            dbObj.Priority = Priority;
            dbObj.Probability = Probability / 100.0M;
            dbObj.IsRevenueGenerating = IsRevenueGenerating;
            dbObj.Deadline = Deadline;
            dbObj.ParentProjectId = ParentProjectId;
            //dbObj.HasChildren = HasChildren;
        }

        public ProjectPartModel Clone()
        {
            return new ProjectPartModel
            {
                Id = this.Id,
                ClientId = this.ClientId,
                ClientName = this.ClientName,
                Details = this.Details,
                IsRevenueGenerating = this.IsRevenueGenerating,
                Deadline = this.Deadline,
                Name = this.Name,
                Priority = this.Priority,
                Probability = this.Probability,
                StatusId = this.StatusId,
                StatusName = this.StatusName,
                TypeId = this.TypeId,
                TypeName = this.TypeName,
                AssignedTeams = this.AssignedTeams,
                InternalContacts = this.InternalContacts,
                ExternalContacts = this.ExternalContacts,
                DeletedPart = this.DeletedPart,
                IsProbability100 = this.IsProbability100,
                OldId = this.Id ,
                ParentProjectId = this.ParentProjectId 
            };
        }
    }

	/// <summary>
	/// An UI representation of project to be displayed as list items
	/// </summary>
	public class ProjectListModel
	{
		public Guid Id { get; set; }
		public string ProjectName { get; set; }
		public string ProjectNumber { get; set; }
		public string Status { get; set; }
        public int Priority { get; set; }
        public short Probability { get; set; }
		public string Classification { get; set; }
		public string Client { get; set; }
		public string Company { get; set; }
        public IEnumerable<string> Teams { get; set; }
		public int ScenariosCount { get; set; }
		public bool WritePermissionEnabledForCurrentUser { get; set; }
        public string ActiveScenario { get; set; }
        public IEnumerable<string> InactiveScenarios { get; set; }
		public bool HasChildren { get; set; }
        public List<ProjectPartListModel> ProjectParts { get; set; }
	}

    public class ProjectPartListModel : ProjectListModel
    {
    }
}