Initial commit

ASS.Server/Services/ByondService.cs

@@ -0,0 +1,53 @@
+using ASS.API;
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+
+namespace ASS.Server.Services
+{
+    class ByondService : Byond.ByondBase
+    {
+        const string BYOND_LATEST_URL = "https://secure.byond.com/download/build/LATEST/";
+        const string BYOND_DOWNLOAD_URL = "https://secure.byond.com/download/build/";
+
+        HttpClient httpclient;
+        IConfiguration config;
+
+        public ByondService(HttpClient _httpClient, IConfiguration configuration)
+        {
+            httpclient = _httpClient;
+            config = configuration.GetSection("BYOND");
+        }
+
+        public static string GetDownloadUrl(string version)
+        {
+            var split = version.Split(".");
+            return GetDownloadUrl(split[0], split[1]);
+        }
+        public static string GetDownloadUrl(int major, int minor) => GetDownloadUrl(major.ToString(), minor.ToString());
+        public static string GetDownloadUrl(ByondVersion version) => GetDownloadUrl(version.Major, version.Minor);
+        public static string GetDownloadUrl(string major, string minor)
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+                return $"{BYOND_DOWNLOAD_URL}/{major}/{major}.{minor}_byond_linux.zip";
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+                return $"{BYOND_DOWNLOAD_URL}/{major}/{major}.{minor}_byond.zip";
+            throw new Exception("Unsupported OS");
+        }
+
+        public async Task<IEnumerable<ByondVersion>> GetVersions()
+        {
+            var response = await httpclient.SendAsync(new HttpRequestMessage(HttpMethod.Get, BYOND_LATEST_URL));
+            var content = await response.Content.ReadAsStringAsync();
+            var regex = new Regex("\\\"([\\d]+)\\.([\\d]+)_byond.zip\\\"");
+            var matches = regex.Matches(content);
+            return matches.Select(m => new ByondVersion() { Major = int.Parse(m.Captures[0].Value), Minor = int.Parse(m.Captures[0].Value) });
+        }
+    }
+}