using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Text;

namespace Sleis.ViewModels
{
    public class ToggleRecord
    {
        public int RecordId { get; set; }
        public Dictionary<string, string> UrlParams { get; set; }
        //public string ParamName { get; set; }
        //public object Value { get; set; }
    }
    public class ToggleInfo:ItemViewBase
    {
        public string LastFilteredValue { get; set; }
        public int[] FilteredIds{get;set;}
        public List<ToggleRecord> Records { get; set; }
        
        public int NextId
        {
            get
            {   //prevent location an index outside of the bounds of the array.  Also, if MAX returned will hide next button on UI             
                return (CurrentIndex < FilteredIds.Count() - 1) ? Records[CurrentIndex + 1].RecordId : Records.Count - 1;
            }
        }
        public int PreviousId
        {
            get
            {
                //prevent location an index outside of the bounds of the array.  Also, if 0 will hide previous button on UI
                return (CurrentIndex - 1 >= 0) ? Records[CurrentIndex - 1].RecordId : CurrentIndex; //if at the beginning.  Previous will redirect to current
            }
        }
        public int CurrentId { get; set; }
        public int CurrentIndex { get; set; }
        public ToggleRecord CurrentRecord
        {
            get { return Records[CurrentIndex]; }
        }
        
        public bool ShowNextButton()
        {
            return this.CurrentIndex < Records.Count() -1;
        }
        public bool ShowPrevButton()
        {
            return this.CurrentIndex > 0;
        }
        public ToggleInfo(int currentId, int[] filteredIds, string lastFilterValue, List<ToggleRecord> records)
        {
            CurrentId = currentId;
            FilteredIds = filteredIds;
            LastFilteredValue = lastFilterValue;
            Records = records;
            CurrentIndex = Records.FindIndex(r => r.RecordId == currentId);

            //AdditionalUrlParams = new Dictionary<string, List<object>>();
        }
        /*
        public ToggleInfo(int currentId, int[] filteredIds, string lastFilterValue, Dictionary<string, List<object>> additionalUrlParams)
        {
            AdditionalUrlParams = additionalUrlParams;
            CurrentId = currentId;
            FilteredIds = filteredIds;
            LastFilteredValue = lastFilterValue;
        }
         */
        public void UpdateToggleInfo(int newCurrentIndex)
        {
            CurrentIndex = newCurrentIndex;
        }

        public string GetPreviousUrl()
        {
            return string.Format("{0}?reportId={1}&facilityId={2}&toggleIndex={3}{4}", PreviousId.ToString(), ReportId, FacilityId, CurrentIndex-1, AddAditionalParams(CurrentIndex-1));
        }

        public string GetNextUrl()
        {
            return string.Format("{0}?reportId={1}&facilityId={2}&toggleIndex={3}{4}", NextId.ToString(), ReportId, FacilityId, CurrentIndex+1, AddAditionalParams(CurrentIndex + 1));
        }
        private string AddAditionalParams(int recordIndex)
        {
            StringBuilder url = new StringBuilder();
            if (recordIndex >= 0 && recordIndex < Records.Count && Records[recordIndex].UrlParams!=null)
            {
                foreach (string key in Records[recordIndex].UrlParams.Keys)
                {
                    url.AppendFormat("&{0}={1}", key, Records[recordIndex].UrlParams[key].ToString());
                }
            }
            return url.ToString();
        }
    }
}