using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using App_for_woobe.Annotations;
using HtmlAgilityPack;
using OpenQA.Selenium;
using OpenQA.Selenium.PhantomJS;
using OpenQA.Selenium.Remote;
using OpenQA.Selenium.Support.Extensions;

namespace App_for_woobe
{
    /// <summary>
    /// Логика взаимодействия для MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private string _category;
        private bool _useProxy;
        private bool _authorizeProxy;

        public Dictionary<string, string> CityDictionary => App_for_woobe.Resources.CityDictionary;
        public Dictionary<string, string> CategoryDictionary => App_for_woobe.Resources.CategoryDictionary;
        public Dictionary<string, string> AutoTypeDictionary => App_for_woobe.Resources.AutoTypeDictionary;
        public Dictionary<string, string> MarksDictionary => Category == null || Category == "Авто" ? null : App_for_woobe.Resources.MarksDictionary[Category];

        public string City { get; set; }
        public string Category
        {
            get { return _category; }
            set { _category = value;
                OnPropertyChanged(nameof(AutoVisibility));
                OnPropertyChanged(nameof(MarksDictionary));
            }
        }
        public string Mark { get; set; }
        public List<string> AutoType { get; set; }
        public string AutoRepairType { get; set; }
        public string AutoMark { get; set; }

        public string Phone { get; set; }
        public List<Account> Accounts { get; set; } = new List<Account>();
        public int CommentScore { get; set; }
        public string CommentText { get; set; }

        public bool UseProxy
        {
            get { return _useProxy; }
            set { _useProxy = value; OnPropertyChanged(nameof(UseProxy)); }
        }

        public List<Proxy> Proxies { get; set; } = new List<Proxy>();

        public Visibility AutoVisibility => Category == "Авто" ? Visibility.Visible : Visibility.Collapsed;


        public event PropertyChangedEventHandler PropertyChanged;

        [NotifyPropertyChangedInvocator]
        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        public MainWindow()
        {
            DataContext = this;
            InitializeComponent();
        }

        private void PortPreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            if (!char.IsDigit(e.Text, e.Text.Length - 1))
                e.Handled = true;
        }
        private void AccountsClick(object sender, RoutedEventArgs e)
        {
            var win = new AccountsAddWindow() { Accounts = Accounts };
            win.ShowDialog();
            if (win.DialogResult == true)
                Accounts = win.Accounts;
        }

        private void ProxiesClick(object sender, RoutedEventArgs e)
        {
            var win = new ProxyWindow() { Proxies = Proxies};
            win.ShowDialog();
            if(win.DialogResult == true)
                Proxies = win.Proxies;
        }
        private async void ScanClick(object sender, RoutedEventArgs e)
        {
            if (City == null || Category == null)
            {
                MessageBox.Show("Город или категория не задана.");
                return;
            }
            ScanBtn.IsEnabled = false;
            try
            {
                await Scan();
            }
            catch (Exception ee)
            {
                MessageBox.Show(ee.ToString(), "Ошибка");
                return;
            }
            finally
            {
                ScanBtn.IsEnabled = true;
            }
        }

        private IEnumerable<Proxy> ProxyNumerable()
        {
            int i = 0;
            while(true)
                while (i < Proxies.Count)
                    yield return Proxies[i];
        }

        private IEnumerator<Proxy> _proxyNumerator;
        private PhantomJSDriver CreateDriver()
        {
            var service = PhantomJSDriverService.CreateDefaultService(Environment.CurrentDirectory);
            service.HideCommandPromptWindow = true;
            if (UseProxy)
            {
                _proxyNumerator.MoveNext();
                var proxy = _proxyNumerator.Current;
                service.Proxy = $"{proxy.IP}:{proxy.Port}";
                service.ProxyType = "socks5";
                if (proxy.Authorize)
                {
                    service.ProxyAuthentication = $"{proxy.Login}:{proxy.Password}";
                }
            }
            return new PhantomJSDriver(service);
        }

        private async Task Scan(int count = 1)
        {
            var url = $"http://zoon.ru/{CityDictionary[City]}/{CategoryDictionary[Category]}/";
            if (!string.IsNullOrWhiteSpace(Mark))
                url += $"type/{MarksDictionary[Mark]}/";
            if(UseProxy)
                _proxyNumerator = ProxyNumerable().GetEnumerator();
            var items = await Task.Factory.StartNew(() =>
            {
                var dr = CreateDriver();
                dr.Url = url;
                var ret = GetItemsURL(dr, count);
                dr.Dispose();
                return ret;
            });
            const int taskNum = 10;
            for (var i = 0; i < items.Count + taskNum; i += taskNum)
            {
                var drivers = new List<PhantomJSDriver>();
                var tasks = items.Skip(i).Take(taskNum).Select(u => Task.Factory.StartNew(() =>
                {
                    var dr = CreateDriver();
                    drivers.Add(dr);
                    Spam(dr, u, true, true);
                }));

                await Task.WhenAll(tasks.ToArray());
                foreach (var d in drivers)
                {
                    d.Dispose();
                }
            }
        }

        private HashSet<string> GetItemsURL(PhantomJSDriver driver, int count)
        {
            var items = new HashSet<string>();
            while (items.Count < count)
            {
                var oldcount = items.Count;
                items.UnionWith(ParseHtml(driver));
                if (items.Count != 0 && items.Count == oldcount)
                {
                    Thread.Sleep(500);
                    continue;
                }
                try
                {
                    var nextbtn = driver.FindElement(By.CssSelector("[class*='js-next-page']"));
                    nextbtn.Click();
                    Thread.Sleep(500);
                }
                catch (NoSuchElementException)
                {
                    break;
                }
            }
            return new HashSet<string>(items.Take(count));
        }

        private static IEnumerable<string> ParseHtml(ISearchContext driver)
        {
            var items = driver.FindElements(By.CssSelector("[class*='service-item pd-m js-results-item']"));
            var ret = new List<string>();
            foreach (var i in items)
            {
                try
                {
                    ret.Add(i.FindElement(By.CssSelector("[class*='js-item-url']")).GetAttribute("href"));
                }
                catch (NoSuchElementException) { continue; }
            }
            return ret;
        }

        private void Spam(RemoteWebDriver driver, string url, bool call, bool comment, Account account, int trycount = 0)
        {
            driver.Url = url;
            if (call)
            {
                try
                {
                    var callmeopenbtn =
                        driver.FindElement(
                            By.CssSelector("[class*='button button-primary button-action action-button-target']"));
                    callmeopenbtn.Click();
                    Thread.Sleep(200);
                    bool next = true;
                    try
                    {
                        driver.ExecuteJavaScript($"document.getElementsByName(\"phone\")[0].value = \"{Phone}\"");
                        Thread.Sleep(200);
                    }
                    catch
                    {
                        if (trycount == 5)
                            return;

                        Spam(driver, url, true, false, account, trycount++);
                        next = false;
                    }
                    if (next)
                    {
                        var callmebtn =
                            driver.FindElement(
                                By.CssSelector("[class*='button button-purple button-primary button34 pull-left']"));
                        callmebtn.Click();
                        Thread.Sleep(200);
                    }
                }
                catch (NoSuchElementException)
                {
                }
            }
            if (comment)
            {
                try
                {
                    var cmntbtn = driver.FindElement(By.CssSelector("[class*='button-comment-add']"));
                    cmntbtn.Click();
                    Thread.Sleep(100);

                    driver.ExecuteScript($"document.getElementsByName(\"content\")[0].value = \"{CommentText}\"");
                    Thread.Sleep(100);

                    var stars =
                        driver.FindElement(By.CssSelector("[class*='comment-form-container']"))
                            .FindElements(By.CssSelector("[class*='star-item']"));
                    stars[CommentScore].Click();
                    Thread.Sleep(200);

                    var sendbtn = driver.FindElement(By.CssSelector("[class*='button button-primary pull-left mr10']"));
                    sendbtn.Click();
                    Thread.Sleep(100);

                    var loginbtn = driver.FindElement(By.CssSelector("[class*='button-holder-auth zn js-login-zoon']"));
                    sendbtn.Click();
                    Thread.Sleep(100);


                    driver.ExecuteScript($"document.getElementsByName(\"email\")[0].value = \"{Accounts[0].Login}\"");
                    Thread.Sleep(20);

                    driver.ExecuteScript($"document.getElementsByName(\"password\")[0].value = \"{Accounts[0].Password}\"");
                    Thread.Sleep(20);

                    driver.ExecuteScript(
                        "document.getElementsByClassName(\"button button-large button-purple middle\")[0].click()");
                    Thread.Sleep(100);
                }
                catch (NoSuchElementException)
                {

                }
            }
        }

    }
}