using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

using Model;

namespace ConsoleApp
{
    internal class SearcherRecipe : IMenuDisplay
    {
        public int CurrentLine
        {
            get => _currentLine;
            private set
            {
                _currentLine = value;
                if (_currentLine > _maxLines)
                {
                    _currentLine = _maxLines;
                }
                if (_currentLine < 0)
                {
                    _currentLine = 0;
                }
                return;
            }
        }

        public RecipeCollection SearchResult { get; private set; }

        public Recipe? CurrentSelected { get; private set; }
        public string ResearchStr { get; set; }

        private RecipeCollection _allRecipes;
        private string _researchStr = "";
        private int _currentLine = 0;
        private int _maxLines = 0;


        public SearcherRecipe(RecipeCollection recipes)
        {
            _allRecipes = recipes;
            SearchResult = recipes;
            ResearchStr = "";
        }

        public bool ComputeSearch(string researchStr = "")
        {
            ResearchStr = researchStr;
            SearchResult = _allRecipes.ResearchByName(ResearchStr.ToLower());
            _maxLines = SearchResult.Count - 1;

            return SearchResult.Count > 0;
        }


        public void UpdateDisplay()
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("---------------------------------------------------------");
            sb.AppendLine($" Research: {ResearchStr}");
            sb.AppendLine("---------------------------------------------------------");
            for (int i = 0; i < SearchResult.Count; i++)
            {
                if (i == CurrentLine)
                {
                    CurrentSelected = SearchResult[i];
                    sb.Append($">");
                }
                sb.AppendLine($" [ {SearchResult[i].Id} ]:\t{SearchResult[i].Title} ");
            }
            Console.Clear();
            Console.WriteLine(sb);
        }

        public int SelectNextLine()
        {
            return ++CurrentLine;
        }

        public int SelectPrevioustLine()
        {
            return --CurrentLine;
        }
    }
}