using System;
using System.Text;
using System.Xml;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(AndoridSDK(OS.windows));
            Console.ReadKey();
        }

        /// <summary>
        /// SDK下载地址
        /// </summary>
        /// <param name="os"></param>
        /// <returns></returns>
        static string AndoridSDK(OS os)
        {
            StringBuilder result = new StringBuilder();
            string server = "https://dl-ssl.google.com/android/repository/";
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load("http://dl-ssl.google.com/android/repository/repository-7.xml");
            XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);
            nsmgr.AddNamespace("sdk", "http://schemas.android.com/sdk/android/repository/7");
            //platform
            XmlNodeList nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:platform/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }
            //sample
            nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:sample/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }
            //platform-tool
            nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:platform-tool/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }
            //tool
            nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:tool/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }
            //doc
            nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:doc/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }
            //source
            nodeList = xmlDoc.SelectNodes("/sdk:sdk-repository/sdk:source/sdk:archives/sdk:archive[@os='" + os + "' or @os='any']/sdk:url", nsmgr);
            foreach (XmlNode node in nodeList)
            {
                result.AppendLine(server + node.InnerText);
            }

            return result.ToString();
        }

        /// <summary>
        /// 操作系统
        /// </summary>
        enum OS
        {
            windows,
            macosx,
            linux,
            any
        }
    }
}