using System;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;

namespace Downloader
{
	class Program
	{
		public static readonly HttpClient HttpClient = new HttpClient();
		public static readonly DownTaskManager DownTaskManager = new DownTaskManager();

		static string URL = @"https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fhbimg.b0.upaiyun.com%2F754601d80986bd88e7ee18d14dbd17aa3b78897b27565-YPQ5qp_fw658&refer=http%3A%2F%2Fhbimg.b0.upaiyun.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1628932329&t=f40d5903ac7f541ebe83f7b6a272332d";
		static string URL2 = @"https://mirrors.tuna.tsinghua.edu.cn/osdn/storage/g/a/at/atzlinux/atzlinux-cd/10.10.1/amd64/iso-dvd/atzlinux-10.10.1-amd64-DVD-1.iso";

		static void Main(string[] args)
		{
			//new DownTask(URL, @"D:\Downloads", "b.jpg", 8).StartAsync();

			Console.WriteLine("操作码如下");
			Console.WriteLine("0表示退出");
			Console.WriteLine("1表示添加HTTP下载");
			Console.WriteLine("2表示开始所有下载任务");
			Console.WriteLine("3表示查看所有任务");

			int key;
			do
			{
				Console.WriteLine();
				Console.Write("请输入操作码：");
				key = int.Parse(Console.ReadLine());
				switch (key)
				{
					case 0:
						Console.WriteLine("退出...");
						break;
					case 1:
						Console.Write("请输入URL：");
						string url = Console.ReadLine();
						Console.Write("请输入线程数：");
						int num = int.Parse(Console.ReadLine());
						Console.WriteLine("正在寻找资源 ...");
						var task = DownTaskManager.MakeDownTask(url, @"D:\Downloads", num);
						var size = DownTask.FormatBytesSize(task.Length);
						var isRangs = task.IsRanges ? "支持多线程" : "不支持多线程";
						Console.WriteLine($"文件名：{task.Name}\n文件大小：{size}\n是否支持多线程：{isRangs}\n默认最大线程数：{task.ThreadNum}");
						Console.WriteLine("是否添加队列？y or n");
						if (Console.ReadLine()=="y")
						{
							Console.WriteLine("添加中...");
							
							Console.WriteLine(DownTaskManager.Add(task.Name, task)?"添加成功，未开始下载 ...":"添加失败，任务已存在！");
						}
						else
						{
							Console.WriteLine("操作已终止，未添加到队列...");
						}
						break;
					case 2:
						Console.WriteLine("开始所有任务...");
						DownTaskManager.StartAll();
						break;
					case 3:
						Console.WriteLine("所有任务如下：");
						foreach (var item in DownTaskManager.GetAllTaskNews())
						{
							Console.WriteLine(item);
						}
						Console.WriteLine("=====END======");
						break;
					default:
						Console.WriteLine("未知操作，请重新输入...");
						break;
				}
				Console.WriteLine();
			} while (key!=0);
		}
	}
}