using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Data.Entity.Core.Objects;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
using Microsoft.AspNet.Identity.EntityFramework;
using Newtonsoft.Json;
using Resources;
using Weee.DAL;

namespace Weee.Models
{
    public enum CompanyStatus
    {
        [Display(Name = "CompanyStatusNew", ResourceType = typeof(Resource))]
        New,
        [Display(Name = "CompanyStatusActive", ResourceType = typeof(Resource))]
        Active,
        [Display(Name = "CompanyStatusInactive", ResourceType = typeof(Resource))]
        Inactive
    }

    public abstract class Company : IValidatableObject
    {
        public Company()
        {
            UID = Guid.NewGuid();
            Users = new HashSet<User>();
            Status = CompanyStatus.New;
            RegisterDate = DateTime.UtcNow;
            LastStatusUpdateDate = DateTime.UtcNow;
        }

        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        [Key]
        public int ID { get;  set; }

        public Guid UID { get;  set; }

        public string LogoUrl { get; set; }

        [Display(Name = "CompanyName", ResourceType = typeof(Resource))]
        //[Required(ErrorMessageResourceType = typeof(Resource),
        //    ErrorMessageResourceName = "RequiredMessage")]
        [StringLength(100, ErrorMessageResourceType = typeof(Resource),
            ErrorMessageResourceName = "CompanyNameMaxLength")]
        public string Name { get; set; }

        [Display(Name = "EnglishName", ResourceType = typeof(Resource))]
        //[Required(ErrorMessageResourceType = typeof(Resource), ErrorMessageResourceName = "RequiredMessage")]
        public string EnglishName { get; set; }

        [Display(Name = "CompanyAddress", ResourceType = typeof(Resource))]
        //[Required(ErrorMessageResourceType = typeof(Resource),
        //    ErrorMessageResourceName = "RequiredMessage")]
        [StringLength(300, ErrorMessageResourceType = typeof(Resource),
            ErrorMessageResourceName = "CompanyAddressMaxLength")]
        public string Address { get; set; }

        [Display(Name = "CompanyVATNumber", ResourceType = typeof(Resource))]
        public string VATNumber { get; set; }

        [Display(Name = "CEOName", ResourceType = typeof(Resource))]
        public string CEOName { get; set; }

        [Display(Name = "CompanyIndustryDescription", ResourceType = typeof(Resource))]
        public string IndustryDescription { get; set; }

        [Display(Name = "CompanyDescription", ResourceType = typeof(Resource))]
        public string Description { get; set; }

        [Display(Name = "Capital", ResourceType = typeof(Resource))]
        [Range(0, Int32.MaxValue)]
        public int Capital { get; set; }

        [Display(Name = "CompanyWebSiteUrl", ResourceType = typeof(Resource))]
        [StringLength(50, ErrorMessageResourceType = typeof(Resource),
            ErrorMessageResourceName = "CompanyWebSiteUrlMaxLength")]
        public string WebSiteUrl { get; set; }

        [Display(Name = "CompanyRegisterDate", ResourceType = typeof(Resource))]
        public DateTime RegisterDate { get; set; }

        [Display(Name = "CompanyLastStatusUpdateDate", ResourceType = typeof(Resource))]
        public DateTime LastStatusUpdateDate { get; set; }

        [Display(Name = "EnabledStatus", ResourceType = typeof(Resource))]
        public CompanyStatus Status { get; set; }

        [InverseProperty("Company")]
        [JsonIgnore]
        [IgnoreDataMember]
        public virtual ICollection<User> Users { get; set; }

        [NotMapped]
        [JsonIgnore]
        [IgnoreDataMember]
        public Type CompanyType
        {
            get
            {
                return ObjectContext.GetObjectType(this.GetType());
            }
        }

        [NotMapped]
        [JsonIgnore]
        [IgnoreDataMember]
        public string CompanyTypeDisplayName
        {
            get
            {
                if (this.CompanyType == typeof(NormalCompany))
                {
                    return Resource.StaticLabelNormalCompany;
                }
                else
                {
                    return Resource.StaticLabelCertificationCompany;
                }
            }
        }

        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
        {
            var result = new List<ValidationResult>();
            if (string.IsNullOrWhiteSpace(Name))
                result.Add(new ValidationResult(Resource.RequiredMessage, new[] { nameof(Name) }));
            if (string.IsNullOrWhiteSpace(EnglishName))
                result.Add(new ValidationResult(Resource.RequiredMessage, new[] { nameof(EnglishName) }));
            if (string.IsNullOrWhiteSpace(Address))
                result.Add(new ValidationResult(Resource.RequiredMessage, new[] { nameof(Address) }));
            if (string.IsNullOrWhiteSpace(VATNumber))
                result.Add(new ValidationResult(Resource.RequiredMessage, new[] { nameof(VATNumber) }));
            return result;
        }
    }
}