using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Comal.Classes;
using InABox.Core;
using Xamarin.Forms;

namespace comal.timesheets
{


    public class AssignmentListDataModel : ListDataModel<Assignment, AssignmentListDataModelItem>
    {
        public override Columns<Assignment> Columns => new Columns<Assignment>(x => x.ID)
            .Add(x => x.Number)
            .Add(x => x.Title)
            .Add(x => x.Description)
            .Add(x => x.Date)
            .Add(x => x.Actual.Start)
            .Add(x => x.Actual.Finish)
            .Add(x => x.Booked.Start)
            .Add(x => x.Booked.Finish)
            .Add(x => x.ActivityLink.Color)
            .Add(x => x.EmployeeLink.ID)
            .Add(x => x.JobLink.ID)
            .Add(x => x.JobLink.JobNumber)
            .Add(x => x.JobLink.Name)
            .Add(x => x.Task.ID)
            .Add(x => x.Task.Number)
            .Add(x => x.Task.Title)
            .Add(x => x.Completed);
    }

    public class AssignmentListDataModelItem : CoreDataModelItem
    {

        public Guid Id => Row.Get<Assignment, Guid>(c => c.ID);

        public int Number => Row.Get<Assignment, int>(c => c.Number);

        public Guid EmployeeId => Row.Get<Assignment, Guid>(c => c.EmployeeLink.ID);

        public Guid JobID => Row.Get<Assignment, Guid>(c => c.JobLink.ID);
        public string JobNumber => Row.Get<Assignment, String>(c => c.JobLink.JobNumber);
        public string JobName => Row.Get<Assignment, String>(c => c.JobLink.Name);

        public Guid TaskID => Row.Get<Assignment, Guid>(c => c.Task.ID);
        public int TaskNumber => Row.Get<Assignment, int>(c => c.Task.Number);
        public string TaskName => Row.Get<Assignment, String>(c => c.Task.Title);

        public String Subject => string.Format("{0}{1} {2}",
            Row.Get<Assignment, int>(c => c.Number),
            Row.Get<Assignment, Guid>(c => c.JobLink.ID) != Guid.Empty
                ? $"({Row.Get<Assignment, String>(c => c.JobLink.JobNumber)})"
                : "",
            Row.Get<Assignment, String>(c => c.Title));

        public string Notes => Row.Get<Assignment, String>(c => c.Description);

        public DateTime StartTime
        {
            get
            {
                var startspan = Row.Get<Assignment, TimeSpan>(c => c.Actual.Start);
                if (startspan.TotalMinutes != 0)
                    return Row.Get<Assignment, DateTime>(c => c.Date).Add(Row.Get<Assignment, TimeSpan>(c => c.Actual.Start));
                else
                    return Row.Get<Assignment, DateTime>(c => c.Date).Add(Row.Get<Assignment, TimeSpan>(c => c.Booked.Start));
            }
        }


        public DateTime EndTime
        {
            get
            {
                var finishspan = Row.Get<Assignment, TimeSpan>(c => c.Actual.Finish);
                if (finishspan.TotalMinutes != 0)
                    return Row.Get<Assignment, DateTime>(c => c.Date).Add(Row.Get<Assignment, TimeSpan>(c => c.Actual.Finish));
                else
                    return Row.Get<Assignment, DateTime>(c => c.Date).Add(Row.Get<Assignment, TimeSpan>(c => c.Booked.Finish));
            }
        }

        public bool Completed => !Row.Get<Assignment, DateTime>(c => c.Completed).IsEmpty();

        public Color Color
        {
            get
            {
                var color = Row.Get<Assignment, String>(c => c.ActivityLink.Color);
                return !String.IsNullOrWhiteSpace(color)
                    ? Color.FromHex(color)
                    : Color.Silver;
            }
            set { Row.Set<Assignment, String>(c => c.ActivityLink.Color, value.ToHex()); }
        }

        public Color TextColor => Color.Black;

        public ObservableCollection<object> ResourceIds => new ObservableCollection<object>() { Row.Get<Assignment, Guid>(c => c.EmployeeLink.ID) };
    }

}