using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace DCIT.Core.Models
{
    public class ExtractionProgress
    {
        public int Current { get; set; }

        public int Total { get; set; }

        public string Message { get; set; }
    }

    public class ExtractedDocumentText
    {
        public string FilePath { get; set; }

        public string VisibleText { get; set; }
    }

    public class ExtractionCandidate : INotifyPropertyChanged
    {
        private bool _append = true;
        private AutoExtractCategory _primaryCategory;
        private string _categoryDisplay;
        private string _originalText;
        private string _statisticDisplay;
        private string _firstDocumentPath;
        private int _firstOccurrenceOrder;

        public bool Append
        {
            get { return _append; }
            set { SetField(ref _append, value); }
        }

        public AutoExtractCategory PrimaryCategory
        {
            get { return _primaryCategory; }
            set { SetField(ref _primaryCategory, value); }
        }

        public string CategoryDisplay
        {
            get { return _categoryDisplay; }
            set { SetField(ref _categoryDisplay, value); }
        }

        public string OriginalText
        {
            get { return _originalText; }
            set { SetField(ref _originalText, value); }
        }

        public string StatisticDisplay
        {
            get { return _statisticDisplay; }
            set { SetField(ref _statisticDisplay, value); }
        }

        public string FirstDocumentPath
        {
            get { return _firstDocumentPath; }
            set { SetField(ref _firstDocumentPath, value); }
        }

        public int FirstOccurrenceOrder
        {
            get { return _firstOccurrenceOrder; }
            set { SetField(ref _firstOccurrenceOrder, value); }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected void SetField<T>(ref T field, T value, [CallerMemberName] string propertyName = null)
        {
            if (EqualityComparer<T>.Default.Equals(field, value))
            {
                return;
            }

            field = value;
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }

    public class AutoExtractResult
    {
        public List<ExtractionCandidate> Candidates { get; } = new List<ExtractionCandidate>();

        public List<string> Warnings { get; } = new List<string>();

        public int DocumentsProcessed { get; set; }

        public int DocumentsSkipped { get; set; }
    }
}