namespace EnVisage.Models
{
    using System;
    using System.Collections.Generic;
    using System.Linq;

    public class OptimuseModel
    {
        #region Properties

        public List<long> WeekEndings { get; set; }
        public OptimuseCapacityModel ActualCapacity { get; set; }
        public OptimuseCapacityModel PlannedCapacity { get; set; }

        #endregion

        #region Constructors

        public OptimuseModel()
        {
            WeekEndings = new List<long>();
            ActualCapacity = new OptimuseCapacityModel();
            PlannedCapacity = new OptimuseCapacityModel();
        }

        #endregion
    }

    public class OptimuseCapacityModel
    {
        #region Properties

        public long TotalHoursCapacity { get; set; }
        public long TotalResourcesCapacity { get; set; }
        public OptimuseSummaryModel OverAllocatedSummary { get; set; }
        public OptimuseSummaryModel UnderAllocatedSummary { get; set; }
        public OptimuseSummaryModel IdealAllocatedSummary { get; set; }

        #endregion

        #region Constructors

        public OptimuseCapacityModel()
        {
            OverAllocatedSummary = new OptimuseSummaryModel();
            UnderAllocatedSummary = new OptimuseSummaryModel();
            IdealAllocatedSummary = new OptimuseSummaryModel();
        }

        #endregion
    }

    public class OptimuseSummaryModel
    {
        #region Properties

        public long MinResourcesValue
        {
            get
            {
                if (ResourceUsageData.Count <= 0)
                    return 0;

                return ResourceUsageData.Values.Min(x => Math.Abs(x));
            }
        }

        public long MaxResourcesValue
        {
            get
            {
                if (ResourceUsageData.Count <= 0)
                    return 0;

                return ResourceUsageData.Values.Max(x => Math.Abs(x));
            }
        }

        public long MinHoursValue
        {
            get
            {
                if (HoursUsageData.Count <= 0)
                    return 0;

                return HoursUsageData.Values.Min(x => Math.Abs(x));
            }
        }

        public long MaxHoursValue
        {
            get
            {
                if (HoursUsageData.Count <= 0)
                    return 0;

                return HoursUsageData.Values.Max(x => Math.Abs(x));
            }
        }

        public long TotalHoursValue
        {
            get
            {
                return HoursUsageData.Values.Sum(x => Math.Abs(x));
            }
        }

        public long TotalResourcesValue
        {
            get
            {
                return ResourceUsageData.Values.Sum(x => Math.Abs(x));
            }
        }

        public int Weeks { get; private set; }
        public Dictionary<string, long> ResourceUsageData { get; private set; }
        public Dictionary<string, long> HoursUsageData { get; private set; }

        #endregion

        #region Constructors

        public OptimuseSummaryModel()
        {
            ResourceUsageData = new Dictionary<string, long>();
            HoursUsageData = new Dictionary<string, long>();
        }

        #endregion

        #region Methods

        public void AddItem(string key, long hoursValue, long resourcesValue)
        {
            if (string.IsNullOrWhiteSpace(key))
                throw new ArgumentNullException("key");

            if (HoursUsageData.ContainsKey(key))
                throw new ArgumentException(string.Format("An element with the key {0} already exists in the HoursUsageData dictionary", key));

            if (ResourceUsageData.ContainsKey(key))
                throw new ArgumentException(string.Format("An element with the key {0} already exists in the ResourceUsageData dictionary", key));

            HoursUsageData.Add(key, hoursValue);
            ResourceUsageData.Add(key, resourcesValue);
            Weeks += 1;
        }

        #endregion
    }
}