using AutoTrader.Classes.Models;
using AutoTrader.Interfaces;
using HtmlAgilityPack;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace AutoTrader.Classes.Dataproviders
{

    public class InvestingComProvider : ITradeDataProvider, IDisposable
    {
        private const string url = "https://ca.investing.com/equities/canada";
        private HttpClient httpClient = new HttpClient(new HttpClientHandler()
        {
            CookieContainer = new CookieContainer()
        });

        public InvestingComProvider()
        {
            httpClient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36");
        }

        public async Task<SymbolData[]> GetAllSymbolsCurrentValue()
        {
            List<SymbolData> res = new();
            var s = await httpClient.GetStringAsync(url);
            //string s = await File.ReadAllTextAsync(@"c:\bin\output.html");
            HtmlDocument doc = new HtmlDocument();
            doc.LoadHtml(s);
            var symbolsTable = doc.DocumentNode.SelectNodes("//table[@id='cross_rate_markets_stocks_1']/tbody").SingleOrDefault();
            var symbols = symbolsTable.SelectNodes("tr");//.ToList();
            DateTime now = DateTime.UtcNow;

            foreach (var ss in symbols)
            {
                var name = ss.SelectSingleNode("td[@class='bold left noWrap elp plusIconTd']").InnerText;
                var lastPrice = ss.SelectSingleNode("td[contains(@class,'-last')]").InnerText;
                if (decimal.TryParse(lastPrice.Replace(",", ""), NumberStyles.Any, CultureInfo.InvariantCulture, out decimal p))
                {
                    SymbolData toAdd = new SymbolData()
                    {
                        DataAt = now,
                        SymbolName = name,
                        Quote = p
                    };
                    res.Add(toAdd);
                }
                else
                {

                }
            }
            return res.ToArray();
        }

        public async Task<SymbolData> GetDataForSymbol(string name)
        {
            return (await GetAllSymbolsCurrentValue()).Where(x => x.SymbolName == name).SingleOrDefault();
        }

        public Task<SymbolData[]> GetAllSymbols(DateTime OnDate)
        {
            throw new NotImplementedException();
        }

        public void Dispose()
        {

            if (httpClient != null)
            {
                httpClient.Dispose();
                httpClient = null;
            }
        }

        public Task<Dictionary<string, List<SymbolData>>> GetHistoryDataForSymbols(DateTime from, DateTime to)
        {
            throw new NotImplementedException();
        }

        public Task<Dictionary<string, List<SymbolData>>> GetHistoryDataForSymbols(string[] symbols, DateTime from, DateTime to)
        {
            throw new NotImplementedException();
        }
    }
}