using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using QoSManager.Models;

namespace QoSManager.Views
{
    public partial class ProcessSelectionWindow : Window
    {
        public List<ProcessInfo> Processes { get; set; }
        public string SelectedProcess { get; set; }

        public ProcessSelectionWindow()
        {
            InitializeComponent();
            LoadProcesses();
        }

        private void LoadProcesses()
        {
            Processes = new List<ProcessInfo>();
            
            foreach (var process in Process.GetProcesses())
            {
                try
                {
                    var processInfo = new ProcessInfo
                    {
                        Id = process.Id,
                        Name = (process.ProcessName + ".exe").ToLower(),
                        Path = process.MainModule?.FileName ?? "Unknown"
                    };
                    
                    Processes.Add(processInfo);
                }
                catch
                {
                    // Skip processes we can't access
                }
            }
            
            // Remove duplicates by path (keep only unique processes)
            Processes = Processes
                .GroupBy(p => p.Path)
                .Select(g => g.First())
                .ToList();
            
            // Sort processes alphabetically by name
            Processes = Processes.OrderBy(p => p.Name, StringComparer.OrdinalIgnoreCase).ToList();
            ProcessesDataGrid.ItemsSource = Processes;
        }

        private void SelectButton_Click(object sender, RoutedEventArgs e)
        {
            if (ProcessesDataGrid.SelectedItem is ProcessInfo selectedProcess)
            {
                SelectedProcess = selectedProcess.Name;
                DialogResult = true;
                Close();
            }
        }

        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
            Close();
        }

        private void TitleBar_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
            {
                DragMove();
            }
        }

        private void MinimizeButton_Click(object sender, RoutedEventArgs e)
        {
            WindowState = WindowState.Minimized;
        }

        private void CloseButton_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
            Close();
        }
    }
}