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100 lines
3.0 KiB
C#
100 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Text;
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using Newtonsoft.Json;
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using Wox.Helper;
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using Wox.Infrastructure;
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namespace Wox.Update
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{
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public class UpdateChecker
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{
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private const string updateURL = "https://api.getwox.com/release/latest/";
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private static Release newRelease;
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private static bool checkedUpdate = false;
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/// <summary>
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/// If new release is available, then return the new release
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/// otherwise, return null
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/// </summary>
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/// <returns></returns>
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public Release CheckUpgrade(bool forceCheck = false)
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{
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if (checkedUpdate && !forceCheck) return newRelease;
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HttpWebResponse response = HttpRequest.CreateGetHttpResponse(updateURL, HttpProxy.Instance);
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Stream s = response.GetResponseStream();
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if (s != null)
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{
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StreamReader reader = new StreamReader(s, Encoding.UTF8);
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string json = reader.ReadToEnd();
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try
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{
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newRelease = JsonConvert.DeserializeObject<Release>(json);
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}
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catch
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{
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}
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}
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if (!IsNewerThanCurrent(newRelease))
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{
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newRelease = null;
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}
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checkedUpdate = true;
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return newRelease;
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}
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private bool IsNewerThanCurrent(Release release)
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{
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if (release == null) return false;
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string currentVersion = ConfigurationManager.AppSettings["version"];
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return CompareVersion(release.version, currentVersion) > 0;
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}
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/// <summary>
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/// if version1 > version2 return 1
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/// else -1
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/// </summary>
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/// <param name="version1"></param>
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/// <param name="version2"></param>
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/// <returns></returns>
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private int CompareVersion(string version1, string version2)
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{
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if (version1 == version2) return 0;
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if (string.IsNullOrEmpty(version1) || string.IsNullOrEmpty(version2)) return 0;
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//semantic version, e.g. 1.1.0
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List<int> version1List = version1.Split('.').Select(int.Parse).ToList();
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List<int> version2List = version2.Split('.').Select(int.Parse).ToList();
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if (version1List[0] > version2List[0])
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{
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return 1;
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}
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else if (version1List[0] == version2List[0])
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{
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if (version1List[1] > version2List[1])
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{
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return 1;
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}
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else if (version1List[1] == version2List[1])
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{
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if (version1List[2] > version2List[2])
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{
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return 1;
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}
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}
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}
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return -1;
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}
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}
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}
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