using System;
using DataModel.Models;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

namespace DataModel.ViewModels
{
    /// <summary>
    /// View model for search
    /// </summary>
    public class SearchViewModel
    {
        /// <summary>
        /// PK ID of search
        /// </summary>
        public int ID { get; set; }

        /// <summary>
        /// User name of user that created search
        /// </summary>
        public string UserName { get; set; }

        /// <summary>
        /// User-friendly name for search
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// Current search status
        /// </summary>
        [JsonConverter(typeof(StringEnumConverter))]
        public SearchStatus Status { get; set; }

        /// <summary>
        /// Timestamp search was submitted
        /// </summary>
        public DateTime? SubmitDT { get; set; }

        /// <summary>
        /// Timestamp search was started
        /// </summary>
        public DateTime? StartDT { get; set; }

        /// <summary>
        /// Timestamp search was completed
        /// </summary>
        public DateTime? EndDT { get; set; }

        /// <summary>
        /// Search critera
        /// </summary>
        public SearchCriteriaViewModel Criteria { get; set; }

        /// <summary>
        /// Constructor
        /// </summary>
        public SearchViewModel()
        {
            Criteria = new SearchCriteriaViewModel();
        }

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="search">Search specifications to copy</param>
        public SearchViewModel(Search search) : this()
        {
            if (search == null)
            {
                return;
            }

            ID = search.ID;
            UserName = search.UserName;
            Name = search.Name;
            Status = search.Status;
            SubmitDT = search.SubmitDT;
            StartDT = search.StartDT;
            EndDT = search.EndDT;
            Criteria = new SearchCriteriaViewModel(search.Criteria);
        }

        /// <summary>
        /// Converts the view model into standard model
        /// </summary>
        /// <returns>Compressed search model</returns>
        public Search ToModel()
        {
            return new Search()
            {
                ID = ID,
                UserName = UserName,
                Name = Name,
                Status = Status,
                Criteria = Criteria.ToModel(),
                SubmitDT = SubmitDT,
                StartDT = StartDT,
                EndDT = EndDT
            };
        }
    }
}