using System;
using System.ComponentModel;
using System.Linq.Expressions;
using InABox.Core;

namespace Comal.Classes
{
    [UserTracking("Project Management")]
    public class Job : Entity, IPersistent, IRemotable, IScheduleAction, IOneToMany<Schedule>, IStringAutoIncrement<Job>,
        ILicense<ProjectManagementLicense>, IExportable, IImportable, IMergeable, IDataEntryInstance
    {
        public const string NotesPage = "Notes";

        #region General

        [UniqueCodeEditor(Visible = Visible.Default, Editable = Editable.Enabled)]
        [EditorSequence(0)]
        public string JobNumber { get; set; }

        //[Obsolete("Replaced by JobNumber", true)]
        //[IntegerEditor(Editable = Editable.Hidden)]
        //public int Number { get; set; }

        [TextBoxEditor]
        [EditorSequence(1)]
        public string Name { get; set; }
        
        [EditorSequence(2)]
        [DateEditor]
        public DateTime Date { get; set; }

        [SecondaryIndex]
        [EnumLookupEditor(typeof(JobType))]
        [EditorSequence(3)]
        public JobType JobType { get; set; } = JobType.Project;

        [EditorSequence(4)]
        public CustomerLink Customer { get; set; }
        
        [EditorSequence(5)]
        public Address SiteAddress { get; set; }
        
        [EditorSequence(6)]
        public ContactLink Contact { get; set; }
        
        [EditorSequence(7)]
        [Caption("Bill To")]
        public AccountLink Account { get; set; }
        
        [EditorSequence(8)]
        [TextBoxEditor]
        public String ClientReference { get; set; }
        
        [EditorSequence(9)]
        public JobStatusLink JobStatus { get; set; }

        #endregion

        [NotesEditor]
        [EditorSequence(NotesPage, 1)]
        public string[] Notes { get; set; } = Array.Empty<string>();

        #region Other

        [TextBoxEditor]
        [EditorSequence("Other", 1)]
        public string URL { get; set; }

        [ColorEditor]
        [EditorSequence("Other", 2)]
        public string Color { get; set; }
        
        [EditorSequence("Other", 3)]
        [TimestampEditor]
        public DateTime DataEntered { get; set; }

        #endregion

        #region Project Management

        [Caption("Project Lead")]
        [EditorSequence("Project Management", 1)]
        public EmployeeLink ProjectLead { get; set; }
        
        [Caption("Drafting Lead")]
        [EditorSequence("Project Management", 2)]
        public EmployeeLink DraftingLead { get; set; }
        
        [Caption("Site Lead")]
        [EditorSequence("Project Management", 3)]
        public EmployeeLink SiteLead { get; set; }
        
        [TextBoxEditor]
        [EditorSequence("Project Management", 4)]
        public string SetoutsFolder { get; set; }

        [TimeOfDayEditor]
        [EditorSequence("Project Management", 5)]
        public TimeSpan UsualStart { get; set; }

        [TimeOfDayEditor]
        [EditorSequence("Project Management", 5)]
        public TimeSpan UsualFinish { get; set; }
        
        // This is the Activity to which the Usual Start/Finish Applies
        // Other activitiy timesheets are not affected by this
        [EditorSequence("Project Management", 6)]
        public ActivityLink UsualActivity { get; set; }

        [EditorSequence("Project Management", 7)]
        public DateTime ExpectedCompletionDate { get; set; }

        [EditorSequence("Project Management", 8)]
        public DateTime Completed { get; set; }
        
        private class JobScopeLookup : LookupDefinitionGenerator<JobScope, Job>
        {
            public override Filter<JobScope> DefineFilter(Job[] items)
            {
                var item = items?.Length == 1 ? items[0] : null;
                if (item != null)
                    return new Filter<JobScope>(x => x.Job.ID).IsEqualTo(item.ID).And(x => x.Status.Approved).IsEqualTo(true);
                return new Filter<JobScope>(x => x.ID).None();
            }
            
            public override Columns<Job> DefineFilterColumns()
                => new Columns<Job>(x=>x.ID);
        }
        [LookupDefinition(typeof(JobScopeLookup))]
        [EditorSequence("Project Management", 10)]
        public JobScopeLink DefaultScope { get; set; }

        #endregion

        [TimeOfDayEditor(Editable = Editable.Hidden)]
        public TimeSpan LabourHours { get; set; }

        [NullEditor]
        [Obsolete("Why does this even exist?")]
        public ProductStyleLink Style { get; set; }

        [NullEditor]
        [Aggregate(typeof(JobAssignmentCount))]
        public int Assignments { get; set; }

        [NullEditor]
        [Aggregate(typeof(JobOpenAssignmentCount))]
        public int OpenAssignments { get; set; }

        [NullEditor]
        public ScheduleLink ScheduleLink { get; set; }

        [DoNotPersist]
        [DoNotSerialize]
        public static String JobNumberPrefix { get; set; }

        public Expression<Func<Job, string>> AutoIncrementField() => x => x.JobNumber;
        public Filter<Job>? AutoIncrementFilter() => null;
        public String AutoIncrementPrefix() => JobNumberPrefix;
        public string AutoIncrementFormat() => "{0:D4}";
        
        [NullEditor]
        [Obsolete("Replaced with ProjectLead", true)]
        public EmployeeLink ManagerLink { get; set; }
                
        [NullEditor]
        [Obsolete("Replaced with SiteLead", true)]
        public EmployeeLink EmployeeLink { get; set; }
        
        protected override void Init()
        {
            base.Init();
            Customer.Account.PropertyChanged += Account_PropertyChanged;
            Customer.Delivery.PropertyChanged += Delivery_PropertyChanged;
        }
        
        private void Delivery_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            var value = CoreUtils.GetPropertyValue(Customer.Delivery, e.PropertyName);
            CoreUtils.SetPropertyValue(SiteAddress, e.PropertyName, value);
        }

        private void Account_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName.Equals("ID"))
                Account.ID = Customer.Account.ID;
            else if (e.PropertyName.Equals("Code"))
                Account.Code = Customer.Account.Code;
            else if (e.PropertyName.Equals("Name"))
                Account.Name = Customer.Account.Name;
        }


        public override string ToString()
        {
            return string.Format("{0}: {1}", JobNumber, Name);
        }
        
        static Job()
        {
            LinkedProperties.Register<Job, ContactLink, Guid>(x => x.Customer.DefaultContact, x => x.ID, x => x.Contact.ID);
            LinkedProperties.Register<Job,Address,String>(x=>x.Customer.Delivery, x=>x.Street, x=>x.SiteAddress.Street);
            LinkedProperties.Register<Job,Address,String>(x=>x.Customer.Delivery, x=>x.City, x=>x.SiteAddress.City);
            LinkedProperties.Register<Job,Address,String>(x=>x.Customer.Delivery, x=>x.PostCode, x=>x.SiteAddress.PostCode);
            LinkedProperties.Register<Job,Address,String>(x=>x.Customer.Delivery, x=>x.State, x=>x.SiteAddress.State);
            LinkedProperties.Register<Job,Address,String>(x=>x.Customer.Delivery, x=>x.Location.Address, x=>x.SiteAddress.Location.Address);
            LinkedProperties.Register<Job,Address,double>(x=>x.Customer.Delivery, x=>x.Location.Latitude, x=>x.SiteAddress.Location.Latitude);
            LinkedProperties.Register<Job,Address,double>(x=>x.Customer.Delivery, x=>x.Location.Longitude, x=>x.SiteAddress.Location.Longitude);
            LinkedProperties.Register<Job,Address,DateTime>(x=>x.Customer.Delivery, x=>x.Location.Timestamp, x=>x.SiteAddress.Location.Timestamp);
        }
    }
}