From 28ebc0cecc84163d359f1aded0f09df6ae22fbef Mon Sep 17 00:00:00 2001
From: Damian <wileps@outlook.com>
Date: Fri, 22 Apr 2022 20:43:27 +0300
Subject: [PATCH] add QuiltMC version loader

---
 CmlLib/Core/Installer/QuiltMC/QuiltLoader.cs  |  16 +++
 .../Installer/QuiltMC/QuiltVersionLoader.cs   | 114 ++++++++++++++++++
 2 files changed, 130 insertions(+)
 create mode 100644 CmlLib/Core/Installer/QuiltMC/QuiltLoader.cs
 create mode 100644 CmlLib/Core/Installer/QuiltMC/QuiltVersionLoader.cs

diff --git a/CmlLib/Core/Installer/QuiltMC/QuiltLoader.cs b/CmlLib/Core/Installer/QuiltMC/QuiltLoader.cs
new file mode 100644
index 0000000..3739b35
--- /dev/null
+++ b/CmlLib/Core/Installer/QuiltMC/QuiltLoader.cs
@@ -0,0 +1,16 @@
+using Newtonsoft.Json;
+
+namespace CmlLib.Core.Installer.QuiltMC
+{
+    public class QuiltLoader
+    {
+        [JsonProperty("separator")]
+        public string? Separator { get; set; }
+        [JsonProperty("build")]
+        public string? Build { get; set; }
+        [JsonProperty("maven")]
+        public string? Maven { get; set; }
+        [JsonProperty("version")]
+        public string? Version { get; set; }
+    }
+}
diff --git a/CmlLib/Core/Installer/QuiltMC/QuiltVersionLoader.cs b/CmlLib/Core/Installer/QuiltMC/QuiltVersionLoader.cs
new file mode 100644
index 0000000..df8cbe6
--- /dev/null
+++ b/CmlLib/Core/Installer/QuiltMC/QuiltVersionLoader.cs
@@ -0,0 +1,114 @@
+using CmlLib.Core.Version;
+using Newtonsoft.Json.Linq;
+using System.Collections.Generic;
+using System.Net;
+using System.Threading.Tasks;
+using CmlLib.Core.VersionLoader;
+
+namespace CmlLib.Core.Installer.QuiltMC
+{
+    public class QuiltVersionLoader : IVersionLoader
+    {
+        public static readonly string ApiServer = "https://meta.quiltmc.org";
+        private static readonly string LoaderUrl = ApiServer + "/v3/versions/loader";
+
+        public string? LoaderVersion { get; set; }
+
+        protected string GetVersionName(string version, string loaderVersion)
+        {
+            return $"quilt-loader-{loaderVersion}-{version}";
+        }
+
+        public MVersionCollection GetVersionMetadatas()
+            => internalGetVersionMetadatasAsync(sync: true).GetAwaiter().GetResult();
+
+        public Task<MVersionCollection> GetVersionMetadatasAsync()
+            => internalGetVersionMetadatasAsync(sync: false);
+
+        private async Task<MVersionCollection> internalGetVersionMetadatasAsync(bool sync)
+        {
+            if (string.IsNullOrEmpty(LoaderVersion))
+            {
+                QuiltLoader[] loaders;
+                if (sync)
+                    loaders = GetQuiltLoaders();
+                else
+                    loaders = await GetQuiltLoadersAsync().ConfigureAwait(false);
+
+                LoaderVersion = loaders[0].Version;
+                if (loaders.Length == 0 || string.IsNullOrEmpty(LoaderVersion))
+                    throw new KeyNotFoundException("can't find loaders");
+            }
+
+            string url = "https://meta.quiltmc.org/v3/versions/game";
+            string res;
+            using (var wc = new WebClient())
+            {
+                if (sync)
+                    res = wc.DownloadString(url);
+                else
+                    res = await wc.DownloadStringTaskAsync(url).ConfigureAwait(false);
+            }
+
+            var versions = parseVersions(res, LoaderVersion!);
+            return new MVersionCollection(versions.ToArray());
+        }
+
+        private List<MVersionMetadata> parseVersions(string res, string loader)
+        {
+            var jarr = JArray.Parse(res);
+            var versionList = new List<MVersionMetadata>(jarr.Count);
+
+            foreach (var item in jarr)
+            {
+                string? versionName = item["version"]?.ToString();
+                if (string.IsNullOrEmpty(versionName))
+                    continue;
+
+                string jsonUrl = $"{ApiServer}/v3/versions/loader/{versionName}/{loader}/profile/json";
+
+                string id = GetVersionName(versionName, loader);
+                var versionMetadata = new WebVersionMetadata(id)
+                {
+                    MType = MVersionType.Custom,
+                    Path = jsonUrl,
+                    Type = "quilt"
+                };
+                versionList.Add(versionMetadata);
+            }
+
+            return versionList;
+        }
+
+        public QuiltLoader[] GetQuiltLoaders()
+        {
+            using var wc = new WebClient();
+            var res = wc.DownloadString(LoaderUrl);
+
+            return parseLoaders(res);
+        }
+
+        public async Task<QuiltLoader[]> GetQuiltLoadersAsync()
+        {
+            using var wc = new WebClient();
+            var res = await wc.DownloadStringTaskAsync(LoaderUrl)
+                .ConfigureAwait(false);
+
+            return parseLoaders(res);
+        }
+
+        private QuiltLoader[] parseLoaders(string res)
+        {
+            var jarr = JArray.Parse(res);
+            var loaderList = new List<QuiltLoader>(jarr.Count);
+            foreach (var item in jarr)
+            {
+                var obj = item.ToObject<QuiltLoader>();
+                if (obj != null)
+                    loaderList.Add(obj);
+            }
+
+            return loaderList.ToArray();
+        }
+    }
+}