using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using InABox.Clients;
using InABox.Core;

namespace Comal.Classes
{
    
    public class JobActivityLookup : LookupGenerator<JobActivity>
    {
        public JobActivityLookup(JobActivity[] items) : base(items)
        {
            AddColumn("Code", typeof(string));
            AddColumn("Description", typeof(string));
            AddColumn("Color", typeof(string));
        }

        protected override void DoGenerateLookups()
        {
            Clear();
            var acts = new Client<Activity>().Query(
                new Filter<Activity>(x=>x.IsLeave).IsEqualTo(false),
                Columns.None<Activity>().Add(x => x.ID, x => x.Code, x => x.Description, x => x.Color),
                new SortOrder<Activity>(x => x.Code)
            );

            foreach (var row in acts.Rows)
                AddValue(
                    row.Get<Activity, Guid>(col => col.ID),
                    string.Format("{0}: {1}", row.Get<Activity, string>(col => col.Code),
                        row.Get<Activity, string>(col => col.Description)),
                    row.Get<Activity, string>(col => col.Code),
                    row.Get<Activity, string>(col => col.Description),
                    row.Get<Activity, string>(col => col.Color)
                );
        }
    }

    public class JobActivityActualAggregate : CoreAggregate<JobActivitySummary, Assignment, TimeSpan>
    {
        public override Expression<Func<Assignment, TimeSpan>> Aggregate => x => x.Actual.Duration;

        public override Dictionary<Expression<Func<Assignment, object>>, Expression<Func<JobActivitySummary, object>>> Links =>
            new Dictionary<Expression<Func<Assignment, object>>, Expression<Func<JobActivitySummary, object>>>()
            {
                { Assignment => Assignment.JobLink.ID, JobActivitySummary => JobActivitySummary.JobLink.ID },
                { Assignment => Assignment.ActivityLink.ID, JobActivitySummary => JobActivitySummary.ActivityLink.ID }
            };

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;
    }
    
    public class JobActivityBookedAggregate : CoreAggregate<JobActivitySummary, Assignment, TimeSpan>
    {
        public override Expression<Func<Assignment, TimeSpan>> Aggregate => x => x.Booked.Duration;

        public override Dictionary<Expression<Func<Assignment, object>>, Expression<Func<JobActivitySummary, object>>> Links =>
            new Dictionary<Expression<Func<Assignment, object>>, Expression<Func<JobActivitySummary, object>>>()
            {
                { Assignment => Assignment.JobLink.ID, JobActivitySummary => JobActivitySummary.JobLink.ID },
                { Assignment => Assignment.ActivityLink.ID, JobActivitySummary => JobActivitySummary.ActivityLink.ID }
            };

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;
    }
    
    public class JobActivityBudgetAggregate : CoreAggregate<JobActivitySummary, JobActivity, TimeSpan>
    {
        public override Expression<Func<JobActivity, TimeSpan>> Aggregate => x => x.Budget;

        public override Dictionary<Expression<Func<JobActivity, object>>, Expression<Func<JobActivitySummary, object>>> Links =>
            new Dictionary<Expression<Func<JobActivity, object>>, Expression<Func<JobActivitySummary, object>>>()
            {
                { JobActivity => JobActivity.JobLink.ID, JobActivitySummary => JobActivitySummary.JobLink.ID },
                { JobActivity => JobActivity.ActivityLink.ID, JobActivitySummary => JobActivitySummary.ActivityLink.ID }
            };

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;
    }
    
    public class JobActivityQuoteAggregate : CoreAggregate<JobActivitySummary, JobActivity, TimeSpan>
    {
        public override Expression<Func<JobActivity, TimeSpan>> Aggregate => x => x.Quote;

        public override Dictionary<Expression<Func<JobActivity, object>>, Expression<Func<JobActivitySummary, object>>> Links =>
            new Dictionary<Expression<Func<JobActivity, object>>, Expression<Func<JobActivitySummary, object>>>()
            {
                { JobActivity => JobActivity.JobLink.ID, JobActivitySummary => JobActivitySummary.JobLink.ID },
                { JobActivity => JobActivity.ActivityLink.ID, JobActivitySummary => JobActivitySummary.ActivityLink.ID }
            };

        public override AggregateCalculation Calculation => AggregateCalculation.Sum;
    }

    public interface IJobActivity
    {
        JobLink JobLink { get; set; }
        AssignmentActivityLink ActivityLink { get; set; }
    }
    
    public class JobActivityAssignmentUnionGenerator : AutoEntityUnionGenerator<IJobActivity>
    {
        protected override void Configure()
        {
            AddTable<JobActivity>();
            AddTable<Assignment>();
        }

        public override bool Distinct => true;

        public override Column<IJobActivity>[] IDColumns => new Column<IJobActivity>[]
        {
            new Column<IJobActivity>(x => x.JobLink.ID),
            new Column<IJobActivity>(x => x.ActivityLink.ID)
        };
    }

    [AutoEntity(typeof(JobActivityAssignmentUnionGenerator))]
    public class JobActivitySummary : Entity, IRemotable, IPersistent, IJobActivity, IOneToMany<Job>, ILicense<ProjectManagementLicense>
    {
        [NullEditor]
        public JobLink JobLink { get; set; }

        [EditorSequence(1)]
        [Caption("Activity",IncludePath = false)]
        public AssignmentActivityLink ActivityLink { get; set; }

        [EditorSequence(2)]
        [DurationEditor(Visible = Visible.Default, Summary = Summary.Sum)]
        [Aggregate(typeof(JobActivityQuoteAggregate))]
        public TimeSpan Quote { get; set; }
        
        [EditorSequence(3)]
        [DurationEditor(Visible = Visible.Default, Summary = Summary.Sum)]
        [Aggregate(typeof(JobActivityBudgetAggregate))]
        public TimeSpan Budget { get; set; }
        
        [EditorSequence(4)]
        [DurationEditor(Visible = Visible.Default, Summary = Summary.Sum)]
        [Aggregate(typeof(JobActivityBookedAggregate))]
        public TimeSpan Booked { get; set; }        
        
        [EditorSequence(5)]
        [DurationEditor(Visible = Visible.Default, Summary = Summary.Sum)]
        [Aggregate(typeof(JobActivityActualAggregate))]
        public TimeSpan Actual { get; set; }
    }
    
    
    public class JobActivity : Entity, IRemotable, IPersistent, IManyToMany<Job, Activity>, ILicense<ProjectManagementLicense>, IJobActivity
    {
        [EditorSequence(1)]
        [EntityRelationship(DeleteAction.Cascade)]
        public JobLink JobLink { get; set; }

        [EditorSequence(2)]
        [EntityRelationship(DeleteAction.SetNull)]
        public AssignmentActivityLink ActivityLink { get; set; }
        
        [EditorSequence(3)]
        [DurationEditor(Summary = Summary.Sum)]
        public TimeSpan Quote { get; set; }
        
        [EditorSequence(4)]
        [DurationEditor(Summary = Summary.Sum)]
        public TimeSpan Budget { get; set; }
    }
    
}